CN112223855A - Conductive rubber sleeve and preparation method and application thereof - Google Patents

Conductive rubber sleeve and preparation method and application thereof Download PDF

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Publication number
CN112223855A
CN112223855A CN202011026583.7A CN202011026583A CN112223855A CN 112223855 A CN112223855 A CN 112223855A CN 202011026583 A CN202011026583 A CN 202011026583A CN 112223855 A CN112223855 A CN 112223855A
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tubular material
parts
layer
conductive
bonding layer
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王俊霞
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/02—Layered products comprising a layer of natural or synthetic rubber with fibres or particles being present as additives in the layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
    • C09J9/02—Electrically-conducting adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/105—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/085—Copper
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/001—Conductive additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/04—Antistatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses a conductive rubber sleeve and a preparation method and application thereof, wherein the conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer and a bonding layer arranged between the tubular material layer and the metal mesh layers, metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; mixing metal powder into a silicon rubber material, stirring, extruding the mixed silicon rubber material into a tubular material through an extruder, coating bonding layer materials on the inner side and the outer side of the tubular material, laying metal nets on the inner side and the outer side of the tubular material, baking, cooling, preparing a conductive rubber sleeve, and cutting according to the required size. The manufactured part can improve the reliability of the welding process, simultaneously ensure the quality of the rotary welding and avoid missing welding and missing welding.

Description

Conductive rubber sleeve and preparation method and application thereof
Technical Field
The invention belongs to the technical field of rotary welding, and particularly relates to a conductive rubber sleeve and a preparation method and application thereof.
Background
As is well known, a threaded bushing is widely used as a fixed connection component in many fields, and the conventional threaded bushing is processed by welding two ends of a bushing segment with two nuts respectively. When an electric welding machine is used for welding, a workpiece needs to be grounded, and when the workpiece is welded in a rotary circular seam mode, the problem that how to connect the workpiece with a grounding wire through a wire is needed to be solved currently. Welding is called as fusion and melt welding, and is a method for joining metal in a heating, high-temperature or high-pressure mode, the welding needs limbs to drive a welding device to contact with a workpiece, potential safety hazards exist in the welding process, and the phenomena of uneven welding, air holes and incomplete welding can occur when the workpiece is manually driven to contact with the welding device. The welding operation is a uniform-speed and stable operation process, and excellent welding seam quality can be obtained only under the uniform-speed and stable condition. Under the non-rotation state, can only carry out the all position welding, the operation degree of difficulty of all position welding is high, and corresponding operation level to operating personnel requires extremely high, and the welding seam quality qualification rate is lower.
At present, the connection mode of the existing ground wire and the workpiece is mainly of two types. One is to directly connect with a clamp, namely, the clamp is used to directly clamp the cable to connect with a workpiece. Although the method is simple, the cable winding is easy to damage, and the loss of the cable is very large. And then, a common grounding rotor is used, but the grounding rotor is easy to generate heat and deform, and along with the rotation of a workpiece, the grounding rotor is blocked after working for a period of time and cannot rotate.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a conductive rubber sleeve, a preparation method and application thereof, which are suitable for a grounding rotor of a rotary welding mechanism and can effectively avoid the influence of rotor vibration on conductive connection, thereby influencing the welding reliability, reducing the resistance of the conductive rubber sleeve, improving the current passing capacity and ensuring the rotary welding quality.
The scheme provides a conductive rubber sleeve which comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer and a bonding layer arranged between the tubular material layer and the metal mesh layers, wherein metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned on the tubular material layer is greater than that of the metal powder positioned on the bonding layer; the bonding layer is prepared from the following raw materials: 10-15 parts of methyl vinyl phenyl silicone rubber, 12-18 parts of natural rubber, 40-70 parts of pressure-sensitive silica gel glue, 3-6 parts of tackifier, 33-35 parts of fumed silica, 4-7 parts of deionized water, 5-20 parts of metal powder and 20-25 parts of conductive carbon black.
Preferably, the tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 6-8 parts of metal powder, 1-2 parts of vinyl silicone oil, 0.1-0.2 part of catalyst and 0.2-0.3 part of inhibitor.
Preferably, the metal powder is copper powder or silver powder.
Preferably, the adhesive layer is 0.1-0.3 mm.
Preferably, the particle size of the conductive carbon black is 100-130 μm.
The scheme also provides a preparation method of the conductive rubber sleeve, metal powder is mixed into the silicon rubber material to be stirred, the mixed silicon rubber material is extruded into a tubular material through an extruder, bonding layer materials are coated on the inner side and the outer side of the tubular material, metal nets are laid on the inner side and the outer side of the tubular material layer to be baked and cooled to form the conductive rubber sleeve, and the conductive rubber sleeve is cut according to the required size and drilled out through holes at the corresponding positions.
Comprising a step of preparing a layer of tubular material, a step of preparing a bonding layer and a step of laying a layer of metallic mesh,
preparing a tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 0.5-1h, and removing the water absorbed in the raw material of the silicon rubber; silicon rubber, metal powder and an additive are put into a stirrer according to the proportion, and the conductive material is prepared after dispersion and stirring; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 4-6MPA, and the extrusion temperature is 185-225 ℃;
the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use;
laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid tubular material in an oven for baking for 30-50min at the baking temperature of 110-.
The scheme also provides an application of the conductive adhesive sleeve on a conductive bearing in the rotary welding device.
The beneficial effect of this scheme lies in:
one, the scheme is through innovation, has changed the structure of the conductive mechanism, divide into the antifriction bearing that connects with spindle and conductive gum cover that is fitted over the antifriction bearing, realize in the welding process, the spindle realizes the conductive connection through the conductive mechanism and the ground plate, because in the course of rotating the spindle, in order to guarantee the steady contact between conductive copper sheet and the antifriction bearing, avoid the influence of vibration of the rotor at the same time, set up the conductive gum cover between conductive copper sheet and the antifriction bearing, the conductive gum cover is soft material on the one hand, can play a role in shock attenuation, avoid the influence of the vibration of the commutator to the electric connection of conductive copper sheet through the rolling bearing, on the other hand, in order to guarantee the conductive gum cover can conduct the great electric current, make the conductive effect of the conductive mechanism strengthened, especially there is a metal mesh outside the conductive gum cover, and there is metal powder of certain density in the, thereby reinforcing electric conductive property, the contact of the metal mesh layer outside conductive copper sheet and the gum cover to realize electrically conductive, become rolling friction by sliding friction simultaneously, reduced the relative frictional force of two parts of pivot and conductive mechanism, can not cause thermal gathering, make the security strengthen greatly.
Secondly, the preparation technology of electrically conductive gum cover has been optimized, this scheme adopts the electrically conductive gum cover through special treatment, can further promote its electric conductive property, wherein include the tubulose material layer, the metal mesh layer and the tie coat of setting between tubulose material layer and metal mesh layer, through the rational arrangement of two kinds of materials of natural rubber and methyl vinyl phenyl silicone rubber, on the comprehensive properties basis that can improve the substrate, further prevent to be corroded the gum cover by the electrically conductive grease in the antifriction bearing, thereby influence its electric conductive property, the life of extension part, secondly, be provided with metal mesh and metal powder in the gum cover, can effectively reduce the resistance of gum cover, make in the electrically conductive gum cover can pass through great electric current, through the concentration that increases the intraformational metal powder of tubulose material, can effectively promote the electric conductive property with antifriction bearing contact position.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples.
A conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer and a bonding layer arranged between the tubular material layer and the metal mesh layers, wherein metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; the bonding layer is prepared from the following raw materials: 10-15 parts of methyl vinyl phenyl silicone rubber, 12-18 parts of natural rubber, 40-70 parts of pressure-sensitive silica gel glue, 3-6 parts of tackifier, 33-35 parts of fumed silica, 4-7 parts of deionized water, 5-20 parts of metal powder and 20-25 parts of conductive carbon black.
In the scheme, the tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 6-8 parts of metal powder, 1-2 parts of vinyl silicone oil, 0.1-0.2 part of catalyst and 0.2-0.3 part of inhibitor.
In the scheme, the metal powder is copper powder or silver powder.
In the scheme, the bonding layer is 0.1-0.3 mm.
In the scheme, the particle size of the conductive carbon black is 100-130 μm.
The scheme also provides a preparation method of the conductive rubber sleeve, metal powder is mixed into the silicon rubber material to be stirred, the mixed silicon rubber material is extruded into a tubular material through an extruder, bonding layer materials are coated on the inner side and the outer side of the tubular material, metal nets are laid on the inner side and the outer side of the tubular material layer to be baked and cooled to form the conductive rubber sleeve, and the conductive rubber sleeve is cut according to the required size and drilled out through holes at the corresponding positions.
Comprising a step of preparing a layer of tubular material, a step of preparing a bonding layer and a step of laying a layer of metallic mesh,
preparing a tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 0.5-1h, and removing the water absorbed in the raw material of the silicon rubber; silicon rubber, metal powder and an additive are put into a stirrer according to the proportion, and the conductive material is prepared after dispersion and stirring; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 4-6MPA, and the extrusion temperature is 185-225 ℃;
the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use;
laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid tubular material in an oven for baking for 30-50min at the baking temperature of 110-.
The scheme also provides an application of the conductive adhesive sleeve on a conductive bearing in the rotary welding device.
Example one
The conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer, and a bonding layer arranged between the tubular material layer and the metal mesh layers, wherein the tubular material layer is 4.5mm, and the bonding layer is 0.15 mm. Metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; the bonding layer is prepared from the following raw materials: 14 parts of methyl vinyl phenyl silicone rubber, 16 parts of natural rubber, 62 parts of pressure-sensitive silica gel glue, 5 parts of a tackifier, 34 parts of fumed silica, 6 parts of deionized water, 15 parts of copper powder and 23 parts of conductive carbon black. The particle size of the conductive carbon black is 125 mu m. The tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 7 parts of copper powder, 1.5 parts of vinyl silicone oil, 0.16 part of catalyst and 0.28 part of inhibitor.
A method for preparing a conductive rubber sleeve comprises the steps of preparing a tubular material layer, preparing a bonding layer and laying a metal mesh layer to prepare the tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 50min, and removing water absorbed in the raw material of the silicon rubber; silicon rubber, metal powder and an additive are put into a stirrer according to the proportion, and the conductive material is prepared after dispersion and stirring; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 5.5MPA, and the extrusion temperature is 215 ℃; the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use; laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid pipe in an oven to bake for 45min at the baking temperature of 125 ℃, cooling, solidifying into a conductive rubber sleeve, and cutting according to the design size.
Example two
The conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer, and a bonding layer arranged between the tubular material layer and the metal mesh layers, wherein the tubular material layer is 3.5mm, and the bonding layer is 0.1 mm. Metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; the bonding layer is prepared from the following raw materials: 10 parts of methyl vinyl phenyl silicone rubber, 12 parts of natural rubber, 40 parts of pressure-sensitive silica gel glue, 3 parts of a tackifier, 33 parts of fumed silica, 4 parts of deionized water, 5 parts of copper powder and 20 parts of conductive carbon black. The particle size of the conductive carbon black is 100 mu m. The tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 6 parts of copper powder, 1 part of vinyl silicone oil, 0.1 part of catalyst and 0.2 part of inhibitor.
A method for preparing a conductive rubber sleeve comprises the steps of preparing a tubular material layer, preparing a bonding layer and laying a metal mesh layer to prepare the tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 0.5h, and removing the water absorbed in the raw material of the silicon rubber; silicon rubber, metal powder and an additive are put into a stirrer according to the proportion, and the conductive material is prepared after dispersion and stirring; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 4MPA, and the extrusion temperature is 185 ℃; the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use; laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid pipe in an oven to bake for 30min at the baking temperature of 110 ℃, cooling, solidifying into a conductive rubber sleeve, and cutting according to the designed size.
EXAMPLE III
The conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer, and a bonding layer arranged between the tubular material layer and the metal mesh layers, wherein the tubular material layer is 5mm, and the bonding layer is 0.3 mm. Metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; the bonding layer is prepared from the following raw materials: 15 parts of methyl vinyl phenyl silicone rubber, 18 parts of natural rubber, 70 parts of pressure-sensitive silica gel glue, 6 parts of tackifier, 35 parts of fumed silica, 7 parts of deionized water, 20 parts of silver powder and 25 parts of conductive carbon black. The particle size of the conductive carbon black is 130 μm. The tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 8 parts of silver powder, 2 parts of vinyl silicone oil, 0.2 part of catalyst and 0.3 part of inhibitor.
A method for preparing a conductive rubber sleeve comprises the steps of preparing a tubular material layer, preparing a bonding layer and laying a metal mesh layer to prepare the tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 1h, and removing the water absorbed in the raw material of the silicon rubber; silicon rubber, metal powder and an additive are put into a stirrer according to the proportion, and the conductive material is prepared after dispersion and stirring; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 6MPA, and the extrusion temperature is 225 ℃; the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use; laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid pipe in an oven to bake for 50min at the baking temperature of 130 ℃, cooling, curing to form a conductive rubber sleeve, and cutting according to the design size.
Example four
The conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer, and a bonding layer arranged between the tubular material layer and the metal mesh layers, wherein the tubular material layer is 3.5mm, and the bonding layer is 0.15 mm. Metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; the bonding layer is prepared from the following raw materials: 12 parts of methyl vinyl phenyl silicone rubber, 14 parts of natural rubber, 45 parts of pressure-sensitive silica gel glue, 4 parts of tackifier, 33 parts of fumed silica, 5 parts of deionized water, 8 parts of copper powder and 22 parts of conductive carbon black. The particle size of the conductive carbon black is 110 mu m. The tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 6 parts of silver powder, 1.5 parts of vinyl silicone oil, 0.1 part of catalyst and 0.2 part of inhibitor.
A method for preparing a conductive rubber sleeve comprises the steps of preparing a tubular material layer, preparing a bonding layer and laying a metal mesh layer to prepare the tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 35min to remove the water absorbed in the raw material of the silicon rubber; silicon rubber, metal powder and an additive are put into a stirrer according to the proportion, and the conductive material is prepared after dispersion and stirring; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 4.5MPA, and the extrusion temperature is 190 ℃; the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use; laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid pipe in an oven to bake for 40min at the baking temperature of 115 ℃, cooling, solidifying into a conductive rubber sleeve, and cutting according to the design size.
EXAMPLE five
The conductive rubber sleeve manufactured in the first, second, third or fourth embodiment is installed on a rolling bearing, the rolling bearing is sleeved on a grounding rotor, a conductive copper sheet is arranged on the outer ring of the conductive rubber sleeve and is of an annular structure formed by two parts, and the two parts are fastened and pressed and fixed on the conductive rubber sleeve through bolts so as to realize the contact between the conductive copper sheet and a metal mesh layer of the outer ring of the conductive rubber sleeve and between the conductive rubber sleeve and a metal mesh layer of the inner ring of the conductive rubber sleeve and the rolling bearing, and finally the conductive connection between the grounding rotor and a grounding plate is completed.
The principal features, principles and advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to explain the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as expressed in the following claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A conductive rubber sleeve is characterized in that: the conductive rubber sleeve comprises a tubular material layer, metal mesh layers positioned on the inner side and the outer side of the tubular material layer and a bonding layer arranged between the tubular material layer and the metal mesh layers, metal powder is distributed in the tubular material layer and the bonding layer, and the concentration of the metal powder positioned in the tubular material layer is greater than that of the metal powder positioned in the bonding layer; the bonding layer is prepared from the following raw materials: 10-15 parts of methyl vinyl phenyl silicone rubber, 12-18 parts of natural rubber, 40-70 parts of pressure-sensitive silica gel glue, 3-6 parts of tackifier, 33-35 parts of fumed silica, 4-7 parts of deionized water, 5-20 parts of metal powder and 20-25 parts of conductive carbon black.
2. The conductive adhesive cover according to claim 1, wherein: the tubular material layer is made of the following raw materials: 30 parts of methyl vinyl silicone rubber, 6-8 parts of metal powder, 1-2 parts of vinyl silicone oil, 0.1-0.2 part of catalyst and 0.2-0.3 part of inhibitor.
3. The conductive adhesive cover according to claim 2, wherein: the metal powder is copper powder or silver powder.
4. A conductive adhesive cover according to claim 3, wherein: the adhesive layer is 0.1-0.3 mm.
5. The conductive adhesive cover according to claim 2, wherein: the particle size of the conductive carbon black is 100-130 mu m.
6. The method for preparing the conductive rubber sleeve as claimed in any one of claims 1 to 5, which is characterized in that: mixing metal powder into a silicon rubber material, stirring, extruding the mixed silicon rubber material into a tubular material through an extruder, coating bonding layer materials on the inner side and the outer side of the tubular material, laying metal nets on the inner side and the outer side of the tubular material layer, baking, cooling, preparing a conductive rubber sleeve, and cutting according to a designed size.
7. The method for preparing the conductive rubber sleeve according to claim 6, characterized in that: comprising a step of preparing a layer of tubular material, a step of preparing a bonding layer and a step of laying a layer of metallic mesh,
preparing a tubular material layer; the method comprises the following specific steps: placing the raw material of the silicon rubber in an oven for baking for 0.5-1h, and removing the water absorbed in the raw material of the silicon rubber; putting the silicon rubber, the metal powder and the additive into a stirrer according to the proportion, and dispersing and stirring to obtain the conductive material; extruding the conductive material into a tubular material through an extruder, wherein the extrusion pressure is 4-6MPA, and the extrusion temperature is 185-225 ℃;
the preparation method of the bonding layer comprises the following specific steps: mixing and stirring the raw materials of the bonding layer according to the proportion, and uniformly coating the mixed raw materials of the bonding layer on the inner side surface and the outer side surface of the tubular material obtained in the previous step for later use;
laying a metal mesh layer, and specifically comprising the following steps: and laying metal nets on the inner and outer surfaces of the tubular material obtained in the previous step, placing the laid tubular material in an oven for baking for 30-50min at the baking temperature of 110-.
8. Use of an electrically conductive rubber sleeve according to any one of claims 1-5 in an electrically conductive bearing in a rotary welding apparatus.
CN202011026583.7A 2020-09-25 2020-09-25 Conductive rubber sleeve and preparation method and application thereof Withdrawn CN112223855A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113271719A (en) * 2021-06-23 2021-08-17 昆山丘钛生物识别科技有限公司 Flexible circuit board processing method, device and equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113271719A (en) * 2021-06-23 2021-08-17 昆山丘钛生物识别科技有限公司 Flexible circuit board processing method, device and equipment
CN113271719B (en) * 2021-06-23 2022-07-08 昆山丘钛生物识别科技有限公司 Flexible circuit board processing method, device and equipment

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