CN101475740B - Antistatic special material for caster and preparation thereof - Google Patents

Antistatic special material for caster and preparation thereof Download PDF

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Publication number
CN101475740B
CN101475740B CN2008101639515A CN200810163951A CN101475740B CN 101475740 B CN101475740 B CN 101475740B CN 2008101639515 A CN2008101639515 A CN 2008101639515A CN 200810163951 A CN200810163951 A CN 200810163951A CN 101475740 B CN101475740 B CN 101475740B
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China
Prior art keywords
antistatic
caster
caster wheel
parts
preparation
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Expired - Fee Related
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CN2008101639515A
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Chinese (zh)
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CN101475740A (en
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杨华科
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to an anti-static caster special raw material and a method for preparing the anti-static caster. The special raw material comprise 100 portions of polyurethane, 22 to 28 portions of reinforcing agents, 8 to 12 portions of conductive agents, 0.3 to 0.5 portions of lubricants, 8 to 14 portions of elastomers, and 0.3 to 0.7 portions of antioxidant. The anti-static caster can be prepared by adopting an extruder to extrude or an injection molding machine to inject. Compared with the prior anti-static caster, the anti-static caster of the invention is simple in formulation and easy to obtain raw material, the caster has the characteristics of good processing stability, simple processing, low equipment requirement, convenient controlling, stable quantity, and the like; and the anti-static caster resists impacting and wearing, and has the advantages of certain rigidity and flexibility, the material is environment-friendly, and the comprehesive property is good.

Description

A kind of antistatic special material for caster and preparation method thereof
Technical field
The present invention relates to antistatic products, particularly relate to the preparation method of antistatic special material for caster and antistatic caster wheel.
Background technology
The method of producing antistatic material at present both at home and abroad is a lot, but exists following unfavorable factor: production cost height, complex process; The production difficulty is big; Antistatic data instability; Comprehensive mechanical properties such as the hardness of material, toughness, intensity do not reach the requirement of castor materials.
Because above unfavorable factor, antistatic caster wheel only is used for medical field both at home and abroad at present, and uses not general.But the transient voltage that static produced can reach 2000V to 3000V, can cause very major injury to human body.Alkalescence in the blood is raise, and calcium contents reduces in the serum, and the CaE amount increases in the urine; Can cause that also cranial nerve cell membrane current conduction abnormalities influences nervus centralis, thereby cause blood pH and body oxygen characteristic to change, influence the physiological equilibrium of body; Interference blood of human body circulation, immunity and neural system influence each internal organs official's works better, cause the unusual and cardiac extra systole of heart rate.
Along with the continuous increase of the mankind to environmental consciousness, health perception, each field is to the antistatic requirement that oneself is all arranged, especially medical institutions.Research and development stable performance, good combination property and low antistatic material and the antistatic products of production cost are imperative.
Summary of the invention
Technical problem to be solved by this invention is the present situation at prior art, provides that a kind of stable performance, production cost are low, the antistatic special material for caster of good combination property.
This present invention another technical problem to be solved is the present situation at prior art, provide a kind of preparation technology simple, to the preparation method of the low antistatic caster wheel of production unit requirement.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: this antistatic special material for caster is characterized in that comprising: (following umber is weight part except that specifying)
100 parts of urethane
22～28 parts of tougheners
8～12 parts of conductive agents
0.3～0.5 part of lubricant
8～14 parts on elastomerics
0.3～0.7 part of Hinered phenols antioxidant.
Wherein, described toughener is selected from glass fibre, carbon fiber or boron fibre, described conductive agent is selected from acetylene black, electrical conductivity Carbon black or metal-powder, described lubricant is the two amine hydroxybenzenes of ethylene bis stearamide and/or ethylene, described elastomerics is terpolymer EP rubber and/or octene-ethylene elastomer, described Hinered phenols antioxidant is selected from 2,6 di tert butyl 4 methyl phenol, double thioether or pentaerythritol ester.These raw materials are common general kind, and raw material is easy to get.
Adopt above-mentioned antistatic special material for caster to prepare the method for antistatic caster wheel, it is characterized in that: above-mentioned antistatic special material for caster is mixed 8～12 minutes in high-speed mixer after, send into extruding pelletization in the twin screw extruder then, make the antistatic caster wheel pellet; Then the antistatic caster wheel pellet that makes is extruded with single screw extrusion machine, through port mold forming, cooling and shaping obtain antistatic caster wheel.
Preferably, the barrel temperature of described twin screw extruder is 220 ℃～250 ℃, and screw speed is 400～1200 rev/mins; The barrel temperature of described single screw extrusion machine is 195 ℃～200 ℃, and screw speed is 400～1200 rev/mins, and die temperature is 195 ℃～210 ℃.
Adopt above-mentioned antistatic special material for caster to prepare the another kind of method of antistatic caster wheel, it is characterized in that: above-mentioned antistatic special material for caster is warmed 90～100 ℃ with injection moulding machine storing baking oven, on injection moulding machine, pass through the direct injection moulding antistatic caster wheel of castor mould then.This method is simpler, only needs injection moulding machine to get final product.
Preferably, the injection temperature of described injection moulding machine is 185～200 ℃, and injection pressure is 75～45MPa, and injection speed is 22～26 mm/second, and be 50～60 seconds cooling time.
Compared with prior art, because antistatic special material for caster provided by the present invention, stable performance, low, the good combination property of production cost, not only can be applicable on the medical treatment product, and because its cheap cost, it can be applied in every field, the static that produces in the time of preventing human body contact go-cart preferably; Especially be fit to make the inner core of castor.Preparation method's technology of antistatic caster wheel provided by the present invention is simple, low for equipment requirements, uses common forcing machine or injection moulding machine to get final product.Antistatic special material for caster provided by the present invention especially is fit to the surrounding layer of preparation antistatic caster wheel.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.Related umber removes special instruction and is weight part among the following embodiment.
Embodiment 1
With 8 parts of (weight parts, down with) electrical conductivity Carbon black, 25 parts of glass fibre, 0.5 part 2,6-di-tert-butyl-4-methy phenol, 0.4 part of ethylene bis stearamide and 10 parts of terpolymer EP rubbers join in 100 parts of urethane, mix 12 minutes in high-speed mixer, obtain antistatic special material for caster.This antistatic special material for caster is sent into extruding pelletization in the twin screw extruder, made the antistatic caster wheel pellet, wherein the twin screw extruder barrel temperature is controlled at 230 ℃, and screw speed is controlled at 800 rev/mins, makes the antistatic caster wheel pellet.The antistatic caster wheel pellet is extruded in single screw extrusion machine, and the barrel temperature of control single screw extrusion machine is 195 ℃, and screw speed is 800 rev/mins, and die temperature is 200 ℃, and through port mold forming, cooling and shaping obtain the antistatic caster wheel outsourcing then.
The each several part performance perameter of testing the antistatic caster wheel in the present embodiment according to a conventional method is as follows:
Performance project Unit Test value
Density g/cms 1.23
Antiwear characteristic mg 35
Stretch long rate ％ 450
Tensile strength Kg/cm 250
Tear strength Kg/cm 80
100% modulus Kg/cm 50
300% modulus Kg/cm 100
Hardness JISA 85
Surface resistivity Ω 105
Compare with the antistatic caster wheel that is used at present produce, because the present invention has added auxiliary agents such as elastomerics, toughener, conductive agent, oxidation inhibitor, lubricant in prescription, make that castor has good processing stability, complete processing is simple, equipment requirements is low, control is convenient, steady quality; This antistatic caster wheel is shock-resistant, wear-resisting and have advantages such as certain rigid and toughness, material environment friendly, a good combination property.
Embodiment 2
Present embodiment be the preparation castor antistatic surrounding layer, promptly on existing castor inner core by the antistatic surrounding layer of injection moulding one deck.It is more economical to adopt this method to prepare antistatic caster wheel, and antistatic effect is good.
0.4 part of the two amine hydroxybenzene of 100 parts of urethane, 27 parts of boron fibres, 10 parts in fine copper powder, 0.3 part, 12 parts octene-ethylene elastomers of double thioether, ethylene mix and make antistatic special material for caster.
The above-mentioned antistatic special material for caster for preparing is put into 300g injection moulding machine storing baking oven warm 100 ℃, and on injection moulding machine, load onto the surrounding layer forming mould of castor, open the surrounding layer forming mould, put into the castor inner core.Behind the matched moulds with the above-mentioned antistatic special material for caster warmed with one section 192 ℃ of injection temperatures, two sections 196 ℃, three sections 188 ℃, injection pressure 65MPa, speed 24 mm/second, injection moulding then 55 seconds cooling times, obtains the antistatic caster wheel surrounding layer.
After tested, the performance of this antistatic caster wheel and embodiment's 1 is suitable.
Embodiment 3
With 100 parts of urethane, 23 parts of carbon fibers, 11 parts of acetylene black, 0.2 part of ethylene bis stearamide and 0.2 part of two amine hydroxybenzene of ethylene, 0.6 part of pentaerythritol ester, 6 parts of terpolymer EP rubbers and 7 parts of octene-ethylene elastomers, in high-speed mixer, mix after 10 minutes, send into extruding pelletization in the twin screw extruder then.The barrel temperature of twin screw extruder is 240 ℃, and screw speed is 1000 rev/mins; Make the antistatic caster wheel pellet.Then the antistatic caster wheel pellet is extruded with single screw extrusion machine, the barrel temperature of single screw extrusion machine is 200 ℃, and screw speed is 1000 rev/mins, and die temperature is 205 ℃.Through port mold forming, cooling and shaping obtain antistatic caster wheel.
After tested, the performance of this antistatic caster wheel and embodiment's 1 is suitable.
Embodiment 4
0.4 part of the two amine hydroxybenzene of 100 parts of urethane, 22 parts in glass fibre, 9 parts of pure zinc powders, 0.6 part of double thioether, 9 parts of octene-ethylene elastomers and ethylene mix and make antistatic special material for caster.
The above-mentioned antistatic special material for caster for preparing is put into 300g injection moulding machine storing baking oven warm 95 ℃, and on injection moulding machine, load onto the forming mould of castor.With one section 190 ℃ of injection temperatures, two sections 195 ℃, three sections 188 ℃, injection pressure 50MPa, speed 25 mm/second injection mouldings, obtain antistatic caster wheel at 60 seconds cooling times.Use the above-mentioned antistatic special material for caster of warming behind the matched moulds.
After tested, the performance of this antistatic caster wheel and embodiment's 1 is suitable.

Claims (5)

1. antistatic special material for caster is characterized in that comprising:
100 parts of urethane
22～28 parts of tougheners
8～12 parts of conductive agents
0.3～0.5 part of lubricant
8～14 parts on elastomerics
0.3～0.7 part of Hinered phenols antioxidant;
Above-mentioned each component is weight part;
Wherein, described toughener is selected from glass fibre, carbon fiber or boron fibre, described conductive agent is selected from acetylene black, electrical conductivity Carbon black or metal-powder, described lubricant is the two amine hydroxybenzenes of ethylene bis stearamide and/or ethylene, described elastomerics is terpolymer EP rubber and/or octene-ethylene elastomer, described Hinered phenols antioxidant is 2,6 di tert butyl 4 methyl phenol, double thioether or pentaerythritol ester.
2. the preparation method of an antistatic caster wheel is characterized in that: antistatic special material for caster as claimed in claim 1 is mixed 8～12 minutes in high-speed mixer after, send into extruding pelletization in the twin screw extruder then, make the antistatic caster wheel pellet; Then the antistatic caster wheel pellet that makes is extruded with single screw extrusion machine, through port mold forming, cooling and shaping obtain antistatic caster wheel.
3. the preparation method of antistatic caster wheel according to claim 2, its feature spy is: the barrel temperature of described twin screw extruder is 220 ℃～250 ℃, and screw speed is 400～1200 rev/mins; The barrel temperature of described single screw extrusion machine is 195 ℃～200 ℃, and screw speed is 400～1200 rev/mins, and die temperature is 195 ℃～210 ℃.
4. the preparation method of an antistatic caster wheel is characterized in that: antistatic special material for caster as claimed in claim 1 is warmed 90～100 ℃ with injection moulding machine storing baking oven, pass through the direct injection moulding antistatic caster wheel of castor mould then on injection moulding machine.
5. the preparation method of antistatic caster wheel according to claim 4, it is characterized in that: the injection temperature of described injection moulding machine is 185～200 ℃, and injection pressure is 75～45MPa, and injection speed is 22～26 mm/second, and be 50～60 seconds cooling time.
CN2008101639515A 2008-12-29 2008-12-29 Antistatic special material for caster and preparation thereof Expired - Fee Related CN101475740B (en)

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Application Number Priority Date Filing Date Title
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CN101475740B true CN101475740B (en) 2011-04-27

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103351566B (en) * 2013-05-28 2015-04-15 宁波科盛光电有限公司 Special material for antistatic truckle, and antistatic truckle jacket and antistatic truckle made through using it
CN104151814A (en) * 2014-08-20 2014-11-19 北京化工大学 Wear resistant type thermoplastic polyurethane elastomer and preparation method thereof
CN104403307A (en) * 2014-12-15 2015-03-11 苏州宽温电子科技有限公司 Conductive engineering plastic
CN105223421B (en) * 2015-11-09 2016-08-24 南京信息工程大学 Nano wire huge piezoresistive characteristic measurement apparatus and manufacture method thereof
CN107915983A (en) * 2017-11-29 2018-04-17 柳州市海达新型材料科技有限公司 Conductive wear-resisting shock-absorption foot pad material and preparation method thereof
CN109627655A (en) * 2018-12-27 2019-04-16 太仓冠联高分子材料有限公司 A kind of dedicated rubber compound of castor and preparation method thereof
CN111434718A (en) * 2019-01-11 2020-07-21 汉达精密电子(昆山)有限公司 TPU conductive material and product thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528597A1 (en) * 1984-08-18 1986-02-27 Elastogran GmbH, 2844 Lemförde Antistatic, optionally cellular polyurethane cast elastomers, process for their preparation, and their use
CN1525996A (en) * 2001-04-20 2004-09-01 邦多化学株式会社 Conductive member for office automation equipment
CN1563191A (en) * 2004-04-05 2005-01-12 中山大学 Gas-sensitive conducting composite material of aqueous polyurethane group and preparation method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528597A1 (en) * 1984-08-18 1986-02-27 Elastogran GmbH, 2844 Lemförde Antistatic, optionally cellular polyurethane cast elastomers, process for their preparation, and their use
CN1525996A (en) * 2001-04-20 2004-09-01 邦多化学株式会社 Conductive member for office automation equipment
CN1563191A (en) * 2004-04-05 2005-01-12 中山大学 Gas-sensitive conducting composite material of aqueous polyurethane group and preparation method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平4-205915A 1992.07.28

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GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Ningbo KeSheng Photoelectric Co., Ltd.

Assignor: Yang Huake

Contract record no.: 2011330000646

Denomination of invention: Antistatic special material for caster and preparation thereof

Granted publication date: 20110427

License type: Exclusive License

Open date: 20090708

Record date: 20110531

CF01 Termination of patent right due to non-payment of annual fee

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Termination date: 20171229

CF01 Termination of patent right due to non-payment of annual fee