CN105463347B - A kind of preparation method of powder injection forming binding agent and feeding - Google Patents
A kind of preparation method of powder injection forming binding agent and feeding Download PDFInfo
- Publication number
- CN105463347B CN105463347B CN201610032389.7A CN201610032389A CN105463347B CN 105463347 B CN105463347 B CN 105463347B CN 201610032389 A CN201610032389 A CN 201610032389A CN 105463347 B CN105463347 B CN 105463347B
- Authority
- CN
- China
- Prior art keywords
- preparation
- binding agent
- added
- cnt
- kneaded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/14—Making alloys containing metallic or non-metallic fibres or filaments by powder metallurgy, i.e. by processing mixtures of metal powder and fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/02—Pretreatment of the fibres or filaments
- C22C47/06—Pretreatment of the fibres or filaments by forming the fibres or filaments into a preformed structure, e.g. using a temporary binder to form a mat-like element
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
The invention discloses the preparation method of a kind of powder injection forming binding agent and feeding, the preparation of binding agent comprises the following steps：(1) CNT, paraffin and oleic acid are weighed respectively for the ︰ 0.1 ~ 0.6 of 1 ︰ 5 ~ 20 ratio in mass ratio, heating paraffin is added into CNT and oleic acid to after melting, ultrasound and 0.5 ~ 1.5h of stirring, make CNT be uniformly dispersed under the conditions of keeping temperature is 80 ~ 85 DEG C；Then it is rapidly cooled to solidify, obtains composite solid paraffin；(2) obtained composite solid paraffin is shredded, by mass parts, the composite solid paraffin of 30 ~ 40 parts of choppings is added into kneading machine, 12 18 portions of medium density polyethylenes are added after mixing, 23 parts of surfactants are added after medium density polyethylene dissolving, then binding agent is obtained through being kneaded.The binding agent for the low molecule amount easily deviate from can be used in the present invention, and CNT can be made to realize that stable and uniform is disperseed in metal-base composites, can suppress growing up for crystal grain, effectively suppresses the contraction of volume, obtains the composite of high densification.
Description
Technical field
The present invention relates to the preparation method of a kind of powder injection forming binding agent and feeding.
Background technology
For CNT with its unique structure and performance, being expected to turn into the composite of most prospect strengthens phase.Preparing
During carbon nano-tube reinforced metal-matrix composite material, the compatibility of the dispersiveness and two-phase of CNT in the base is two
The problem of individual crucial.Because CNT is nonwetting with most metals as carbon fiber, it is difficult to CNT with
Firm combination interface is formed between metallic matrix, so as to have impact on the performance of CNT enhancing effect.Using machinery or borrow
The fairly simple mixed method such as cosolvent, size and the difference of proportion will cause CNT to be reunited difficult with segregation between the two
To avoid；CNT is modified, such as Cu, Ni coat to carbon nano tube surface, but because diameter is only nanoscale,
Its surface carries out metal level plating and is difficult to reach uniform, fine and close, and large-scale plating is more difficult to ensure that clad is continuous and fine and close.
In order to overcome this problem, there has been proposed some new complex methods, Korean science man by the functionalization to CNT,
Compound with copper ion using liquid phase, using plasma flame sintering process after reduction, Young's modulus improves twice.Our classes
Topic group also has larger breakthrough to solving this problem, is received using electrostatic assembly method by the pre-synthesis micron-sized carbon of liquid phase
Mitron-copper composite particles.CNT in composite particles, can greatly reduce the segregation in sintering process by " lock "；With this
It is hot-forming in a mold for starting powder then hot rolled, obtain the block materials that CNT is evenly distributed.It is not difficult to find out,
These methods have carried out functional modification to CNT, have good wetability with matrix.But.To nano-grade size
CNT carry out functionalization be a cumbersome job, generally require and enter again after common pickling purification process
Row depth is chemically or physically modified, i.e., expensive and time-consuming, it is difficult to accomplish scale production.
The Technology Ways that carbon nano-tube reinforced metal-matrix composite material is also people's exploration are prepared using infiltration method, it is thought
Road is that carbon reinforcement is scattered in organic matter in advance, and the porous of carbon nano tube three-dimensional network skeleton structure is obtained by being heat-treated
Prefabricated component, high-temperature molten-state metal is pressed into carbon reinforcement prefabricated component.This method obtains CNT in composite
It is scattered and be easier to solve the problem of be uniformly distributed, and the volume content of CNT can also be up to more than 20%, but this side
Method requires very high to the wellability of two-phase, and the infiltration of liquid metals is difficult to abundant and complete, and hole is more, and consistency is difficult to carry
It is high.
The content of the invention
Present invention solves the technical problem that being, the defects of presence for prior art, there is provided it is a kind of by powder injection into
Shape method prepares the preparation method of the binding agent and its feeding required for carbon nano-tube reinforced metal-matrix composite material.This bonding
Agent makees the polymer with viscosity higher as blending agent by the use of medium density polyethylene, fully dispersed mixed with CNT in advance
Close, by shearing during polymer melt flow and stretching action, realize that CNT and metal dust are dispersed on a large scale
And anchoring.
One of technical scheme is to provide a kind of preparation method of powder injection forming binding agent, including with
Lower step：
(1) CNT, paraffin and oleic acid are weighed respectively for the ︰ 0.1 ~ 0.6 of 1 ︰ 5 ~ 20 ratio in mass ratio, by paraffin plus
Heat adds CNT and oleic acid after extremely melting, ultrasound and 0.5 ~ 1.5h of stirring, make carbon receive under the conditions of keeping temperature is 80 ~ 85 DEG C
Mitron is uniformly dispersed；Then it is rapidly cooled to solidify, obtains composite solid paraffin；
(2) obtained composite solid paraffin is shredded, by mass parts, the composite solid paraffin of 30 ~ 40 parts of choppings added
Kneading machine, after mixing, 12-18 part medium density polyethylenes are added, 2 ~ 3 parts of surface-actives are added after medium density polyethylene dissolving
Agent, then through being kneaded, obtain binding agent.
Further, a diameter of 10 ~ 30nm of the CNT, length are 5 ~ 50 μm.
Further, described surfactant is stearic acid, butyl stearate and/or octyl stearate.
Further, the detailed process of the step (2) is as follows：Obtained composite solid paraffin is shredded, by mass parts,
The composite solid paraffin of 30 ~ 40 parts of choppings is added into kneading machine, under the conditions of rotating speed is 25 ~ 30r/min, temperature is 80 ~ 85 DEG C
It is kneaded 20 ~ 40min；After the temperature of kneading machine is adjusted into 140 ~ 150 DEG C, 15 portions of medium density polyethylenes are added, treat the poly- second of Midst density
Rotating speed is adjusted to 40 ~ 50r/min after alkene dissolving, adds 2.5 parts of surfactants, 40 ~ 80min is kneaded, obtains binding agent.
The another technical scheme of the present invention is to provide a kind of preparation method of powder injection forming feeding, by above-mentioned preparation
The binding agent that method obtains is kneaded with metal dust, then extruded granulation, obtains feeding.
Further, the metal dust is spherical that particle diameter is 0.5 ~ 3 μm.
Further, the metal dust is copper powder or nickel powder.
Further, the mass ratio of the binding agent and metal dust is 1 ︰ 4 ~ 6.
Further, the temperature that the binding agent is kneaded with metal dust is 150 ~ 160 DEG C, and the temperature of the extrusion is
175~185℃。
The invention has the advantages that the present invention can make CNT realize stable and uniform point in metal-base composites
Dissipate.Introduce carbon nanotubes in binder system, polymer will be made full use of to be advantageous to carbon as binding agent key component and received
Mitron is scattered and anchors, and injection moulding can obtain the advantage of high densification.Meanwhile the addition of CNT can improve it is viscous
Tie the mechanical strength of agent system, and can improves the viscosity of binder system, and in network structure cloth CNT because its is big
Draw ratio and high-strength and high ductility will further effectively suppress volume contraction.In addition, us may be selected in the presence of CNT
The medium density polyethylene of lower molecular weight is with regard to that can reach the requirement of binding agent conformality and mobility, without the use of conventional binders
In used high density polyethylene (HDPE), and the medium density polyethylene of low molecule amount is easier to deviate from follow-up skimming processes.Also
It is noted that the presence of the CNT of high-strength and high ductility can not only reduce the contraction of volume in skimming processes, and rear
Growing up for crystal grain can also be suppressed in continuous sintering process, the raising of this highly beneficial consistency and performance.
Brief description of the drawings
Fig. 1 represents the stereoscan photograph for the feeding that embodiment 1 obtains.
Embodiment
Embodiment 1：Weigh 2g CNTs（A diameter of 10 ~ 30 nanometers, length is 5 microns to 50 microns）With 32.5g stones
It is in molten state that wax and 1g oleic acid, which are heated to 80 DEG C,.Under ultrasonic disperse effect, 1h is stirred.Until mixed solution substantially becomes
It is rapid to take out until solidification, obtained composite solid paraffin is shredded when uniformly and being in substantially black.
The paraffin of above-mentioned chopping is added to and had warmed up into 80 DEG C of kneading machine, when rotating speed is 30r/min, is kneaded
30min.15g medium density polyethylenes are added after kneading machine temperature is adjusted into 145 DEG C, keep being kneaded in the case that rotating speed is constant
60min, rotating speed is adjusted to 45r/min after medium density polyethylene substantially dissolves, and adds 2.5g surfactants, in kneading machine
It is middle to be kneaded 1 hour, obtain binding agent；
Then, by 250g copper powders（A diameter of 0.5 micron）It is added in above-mentioned binding agent.Melting temperature is risen to 155 DEG C,
Mixing speed still keeps 45r/min, is kneaded 1.5h.The compound of gained is added in double screw extruder, extrusion temperature is set
For 180 DEG C, extruding pelletization is carried out, obtains feeding.
The feeding sample preparation that above-mentioned preparation method is obtained, is scanned electronic microscope photos, its electromicroscopic photograph as shown in figure 1, from
Find out in Fig. 1, feeding is in spherical particle, and CNT is fairly evenly distributed in particle, shows this technology path energy
The uniform compound of CNT and copper powder is realized well.
Embodiment 2：Weigh 6g CNTs（A diameter of 10 ~ 30 nanometers, length is 5 microns to 50 microns）With 32.5g stones
It is in molten state that wax and 1g oleic acid, which are heated to 80 DEG C,.Under ultrasonic disperse effect, 1h is stirred.Until mixed solution substantially becomes
It is rapid to take out until solidification, obtained composite solid paraffin is shredded when uniformly and being in substantially black.
The paraffin of above-mentioned chopping is added to and had warmed up into 80 DEG C of kneading machine, when rotating speed is 30r/min, is kneaded
30min.15g medium density polyethylenes are added after kneading machine temperature is adjusted into 145 DEG C, keep being kneaded in the case that rotating speed is constant
60min, rotating speed is adjusted to 45r/min after medium density polyethylene substantially dissolves, and adds 2.5g surfactants, in kneading machine
It is middle to be kneaded 1 hour, obtain binding agent；
Then, by 300g copper powders（A diameter of 2 microns）It is added in above-mentioned binding agent.Melting temperature is risen to 155 DEG C, stirred
Mix speed and still keep 45r/min, be kneaded 1.5h.The compound of gained is added in double screw extruder, extrusion temperature is arranged to
180 DEG C, extruding pelletization is carried out, obtains feeding.
Embodiment 3：Weigh 4g CNTs（A diameter of 10 ~ 30 nanometers, length is 5 microns to 50 microns）With 32.5g stones
It is in molten state that wax and 1g oleic acid, which are heated to 80 DEG C,.Under ultrasonic disperse effect, 1h is stirred.Until mixed solution substantially becomes
It is rapid to take out until solidification, obtained composite solid paraffin is shredded when uniformly and being in substantially black.
The paraffin of above-mentioned chopping is added to and had warmed up into 80 DEG C of kneading machine, when rotating speed is 30r/min, is kneaded
30min.15g medium density polyethylenes are added after kneading machine temperature is adjusted into 145 DEG C, keep being kneaded in the case that rotating speed is constant
60min, rotating speed is adjusted to 45r/min after medium density polyethylene substantially dissolves, and adds 2.5g surfactants, in kneading machine
It is middle to be kneaded 1 hour, obtain binding agent；
Then, by 300g copper powders（A diameter of 2 microns）It is added in above-mentioned binding agent.Melting temperature is risen to 155 DEG C, stirred
Mix speed and still keep 45r/min, be kneaded 1.5h.The compound of gained is added in double screw extruder, extrusion temperature is arranged to
180 DEG C, extruding pelletization is carried out, obtains feeding.
Claims (9)
1. a kind of preparation method of powder injection forming binding agent, it is characterised in that comprise the following steps：
(1) CNT, paraffin and oleic acid are weighed respectively for the ︰ 0.1 ~ 0.6 of 1 ︰ 5 ~ 20 ratio in mass ratio, by heating paraffin extremely
CNT and oleic acid are added after melting, ultrasound and 0.5 ~ 1.5h of stirring, make CNT under the conditions of keeping temperature is 80 ~ 85 DEG C
It is uniformly dispersed；Then it is rapidly cooled to solidify, obtains composite solid paraffin；
(2) obtained composite solid paraffin is shredded, by mass parts, the composite solid paraffin of 30 ~ 40 parts of choppings is added and is kneaded
Machine, after mixing, 12-18 part medium density polyethylenes are added, 2 ~ 3 parts of surfactants are added after medium density polyethylene dissolving, then
Through being kneaded, binding agent is obtained.
2. preparation method as claimed in claim 1, it is characterised in that a diameter of 10 ~ 30nm of the CNT, length are
5 ~50μm。
3. preparation method as claimed in claim 1, it is characterised in that described surfactant is stearic acid, stearic acid fourth
Ester and/or octyl stearate.
4. preparation method as claimed in claim 1, it is characterised in that the detailed process of the step (2) is as follows：By what is obtained
Composite solid paraffin is shredded, and by mass parts, the composite solid paraffin of 30 ~ 40 parts of choppings is added into kneading machine, rotating speed be 25 ~
30r/min, temperature are kneaded 20 ~ 40min under the conditions of being 80 ~ 85 DEG C；After the temperature of kneading machine is adjusted into 140 ~ 150 DEG C, 15 are added
Part medium density polyethylene, rotating speed is adjusted to 40 ~ 50r/min after medium density polyethylene dissolving, adds 2.5 parts of surfactants,
40 ~ 80min is kneaded, obtains binding agent.
5. a kind of preparation method of powder injection forming feeding, it is characterised in that by the preparation of any one of claim 1 ~ 4
The binding agent that method obtains is kneaded with metal dust, then extruded granulation, obtains feeding.
6. preparation method as claimed in claim 5, it is characterised in that the metal dust is spherical, and particle diameter is 0.5 ~ 3 μm.
7. preparation method as claimed in claim 5, it is characterised in that the metal dust is copper powder or nickel powder.
8. preparation method as claimed in claim 5, it is characterised in that the mass ratio of the binding agent and metal dust be 1 ︰ 4 ~
6。
9. preparation method as claimed in claim 5, it is characterised in that the temperature that the binding agent is kneaded with metal dust is
150 ~ 160 DEG C, the temperature of the extrusion is 175 ~ 185 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032389.7A CN105463347B (en) | 2016-01-19 | 2016-01-19 | A kind of preparation method of powder injection forming binding agent and feeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032389.7A CN105463347B (en) | 2016-01-19 | 2016-01-19 | A kind of preparation method of powder injection forming binding agent and feeding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105463347A CN105463347A (en) | 2016-04-06 |
| CN105463347B true CN105463347B (en) | 2018-02-16 |
Family
ID=55601499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610032389.7A Active CN105463347B (en) | 2016-01-19 | 2016-01-19 | A kind of preparation method of powder injection forming binding agent and feeding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105463347B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078497A (en) * | 2019-03-14 | 2019-08-02 | 湖北精圭锆业有限公司 | Black zirconia feeding and preparation method thereof for ceramic injection forming |
| CN114212773A (en) * | 2021-12-17 | 2022-03-22 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of carbon nanotube film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388847B (en) * | 2014-12-02 | 2016-06-08 | 宁波新睦新材料有限公司 | The Cu-base composites of a kind of fibre reinforced and its preparation method |
-
2016
- 2016-01-19 CN CN201610032389.7A patent/CN105463347B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 油酸修饰碳纳米管及其摩擦性能的研究;陈传盛等;《润滑与密封》;20071231;第32卷(第12期);第23-26页 * |
| 碳纳米管改性的蜡基复合粘结剂;陈小华等;《湖南大学学报（自然科学版）》;20130930;第40卷(第9期);第74-78页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105463347A (en) | 2016-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Amirkhanlou et al. | Development of Al356/SiCp cast composites by injection of SiCp containing composite powders | |
| CN111957967B (en) | Method for preparing multi-scale ceramic phase reinforced metal composite material through 3D printing | |
| CN100587007C (en) | Method for enhancing nylon selectivity laser sintering forming element by inorganic nano particles | |
| CN109963953A (en) | Master alloy metal matrix nanocomposite and its production method | |
| CN104789805B (en) | A kind of preparation method of carbon nano-tube reinforced metal-matrix composite material | |
| Gu et al. | WC–Co particulate reinforcing Cu matrix composites produced by direct laser sintering | |
| CN101435059A (en) | Method for preparing magnesium base-carbon nanotube composite material | |
| CN102206793A (en) | Preparation method of carbon nanotube-alumina composite reinforced magnesium-based composite material | |
| CN106544537A (en) | A kind of preparation method of carbon nanotube enhanced aluminium-based composite material | |
| CN105568027A (en) | Micronano particle hybrid reinforced aluminum-based composite material and preparation method thereof | |
| CN105063405A (en) | Preparation method of copper matrix graphene alloy | |
| CN105463347B (en) | A kind of preparation method of powder injection forming binding agent and feeding | |
| CN105504749A (en) | Polycarbonate composite material for 3D printing and preparation method thereof | |
| CN106147220B (en) | For the long-chain nylon of SLS and nylon66 fiber alloy powder material preparation method | |
| CN101748349B (en) | Squeeze casting preparation method of carbon nano tube reinforced aluminum alloy composite material through | |
| CN104711496B (en) | Carbon Nanotubes/Magnesiuum Matrix Composite and preparation method thereof | |
| CN106380806A (en) | Conductive polylactic acid composite material composition for hot-melt 3D printing and preparation method thereof | |
| CN111057972B (en) | SW-CNTs and N-SiCp reinforced magnesium alloy workpiece and method | |
| CN101439407B (en) | Method for manufacturing light metal-based nano composite material | |
| Bai et al. | Selective laser sintering mechanism of polymer-coated molybdenum powder | |
| Xu et al. | Preparation high-performance SiC ceramic reinforced with 3D hybrid graphene oxide-carbon nanotube by direct ink writing and liquid silicon infiltration | |
| CN102626963A (en) | Preparation method of nanoscale functional masterbatches used for plastics modification | |
| CN111378861B (en) | Preparation method of in-situ synthesized dual-phase particle reinforced aluminum matrix composite | |
| CN113528910A (en) | Graphene reinforced rare earth magnesium-based composite material and preparation method thereof | |
| CN114875278A (en) | Ti-Al series gradient composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |