CN104559145A - High-toughness and high-thermal-conductivity polymer material and preparation method thereof - Google Patents
High-toughness and high-thermal-conductivity polymer material and preparation method thereof Download PDFInfo
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
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- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a high-toughness and high-thermal-conductivity polymer material and a preparation method thereof. The high-toughness and high-thermal-conductivity polymer material is prepared by premixing a resin-based material, a carbon fiber composite material, thermally conductive filler, a toughening agent, a coupling agent and other processing additives as raw materials, extruding, airing, pelletizing and the like in combination with a twin-screw extruder. The thermal conductivity of the obtained polymer material is improved, the polymer material has excellent mechanical properties, especially toughness, the requirements of fields of electronics, automotives and LED lamps on the processing performance of the polymer material are met and the polymer material is more conducive to being applied in the production of multiple products which have special shapes or have larger degree of deformation in the processing process and strict requirements on the toughness.
Description
Technical field
The present invention relates to a kind of macromolecular material and preparation method thereof, specifically a kind of high tenacity height heat-conducting polymer material and preparation method thereof, belongs to polymer modification, heat sink material preparation field.
Background technology
In order to ensure the work-ing life of LED, LED heat dissipation shell heat-conductive composite material requires to have higher thermal conductivity, good mechanical property and processing characteristics.But on the low side for the preparation of the resin thermal conductivity of LED heat dissipation shell at present, only have 0.2-04w/m.k, do not meet the environment that cooling requirements is strict completely.LED heat radiation is bad easily causes the problems such as power supply damage, light decay quickening, reduced lifetime.
Three kinds of traditional lamp outer casing heat sink materials comprise aluminium, plastics and pottery three kinds, aluminium heat conduction is good, but because of its security of conductive characteristic poor; Plastic insulation is good, but heat conduction and the coefficient of expansion lower; Pottery has the above two insulation and thermal advantage concurrently, and frangible, tooling cost height is its maximum disadvantage.
Usual plastics light weight, easily machine-shaping, cheap and good insulation preformance, but thermal conductivity is lower.By adding the high-resistance functional stuffing of high heat conductance in the plastic, as talcum powder, aluminium nitride, boron nitride, magnesium oxide and aluminum oxide etc., be expected the heat conductivility significantly improving polymkeric substance, the insulating property of polymkeric substance can be kept again simultaneously, can play in the occasion of ask for something insulativity the effect that plain metal thermally conductive material cannot replace.
The method preparing high thermal conductivity matrix material improves heat conductive filler content as far as possible.Current widely used particulate state and sheet heat conductive filler, although improve content, significantly can reduce the mechanical property of matrix material, cannot meet the application of some specific environment, especially low temperature environment for use.At present; the LED lamp overwhelming majority that market uses is plastic wraps aluminium inserts or die casting aluminium form; the coefficient of linear expansion difference existed due to bi-material is huge; when doing cold shock testing; plastics there will be cracking phenomena, and the mass-producing in LED illumination lamp affecting heat-conducting plastic uses.
In addition, in processing, some have special shape or at the more product of course of processing deformation, strict to the toughness reguirements of the macromolecular material as work material, existing heat-conducting plastic cannot meet in electronics, automobile, LED lamp field the processing characteristics requirement of the type macromolecular material.
Existing reported heat-conducting plastic preparation and performance, but it is less to relate to toughening modifying technology.
Summary of the invention
The object of the invention is for above-mentioned the deficiencies in the prior art, a kind of high tenacity height heat-conducting polymer material and preparation method thereof is provided, should by resin binder, carbon-fibre composite, heat conductive filler, toughner, coupling agent and other processing aids are made, pre-mixing is passed through in conjunction with twin screw extruder, extrude, cooling, air-dry, the techniques such as pelletizing, the macromolecular material of acquisition is made to have excellent mechanical property while improving heat conductivility, especially its toughness obtains enhancing, meet at electronics, automobile, LED lamp field is to the processing characteristics requirement of this kind of macromolecular material, be more conducive to be applied in some and there is special shape or larger in course of processing deformation degree, toughness of material is required to the production of strict product.
Technical scheme of the present invention is as follows: a kind of high tenacity height heat-conducting polymer material, is made up of the component of following composition weight number: resin binder 30 ~ 65 parts, carbon-fibre composite 3 ~ 5 parts, heat conductive filler 8 ~ 60 parts, toughner 0.5 ~ 10 part, coupling agent 0.1 ~ 5 part, 0.1 ~ 4 part, oxidation inhibitor, processing aid 0.1 ~ 10 part; Described carbon-fibre composite is flake graphite crystallite etc.
organic fibrepile up along fiber axial direction due and form, the micro crystal graphite material obtained through carbonization and graphitization processing; Described resin binder is one or more composite in polycaprolactam, polyhexamethylene adipamide, industrialization liquid crystalline polymers, polyphenylene sulfide, polyethylene terephthalate, polybutylene terephthalate, polyether-ether-ketone, acrylonitrile-butadiene-styrene copolymer, polypropylene; Described coupling agent is a kind of in organic complex, silicane, titanate ester and aluminate coupling agent.
Preferably, described carbon-fibre composite is chopped carbon fiber or the micro crystal graphite of length 6-8um.
Described heat conductive filler comprises crystal whisker-shaped heat conductive filler and particulate state heat conductive filler, described crystal whisker-shaped heat conductive filler and particulate state heat conductive filler composite according to mass ratio 1:1 ~ 3.
Preferably, described heat conductive filler is that one or more in talcum powder, aluminum oxide, silicon oxide, zinc oxide, magnesium oxide, calcium oxide, aluminium nitride, boron nitride, silicon carbide are carried out composite.
Preferred further, described aluminum oxide is ball-aluminium oxide, and main component is calcining α-Al
2o
3, grain diameter is 5 ~ 10 μm, and purity is greater than 98%.
Preferably, described resin binder to be relative viscosity be 2.8 the translucent or emboliform polycaprolactam of opaque oyster white.
Described toughner is ethylene-octene copolymer (POE), the POE of ethylene-vinyl acetate copolymer (EVA), maleic anhydride graft, be end segment with polystyrene, the ethylene-butene copolymer obtained with polyhutadiene hydrogenation is one or more in the SEBS of the linear three embedding multipolymers (SEBS) of middle spring block, maleic anhydride graft.
Preferably, described toughner is the SEBS that maleic anhydride connects the maleic anhydride graft of skill rate 0.8%.
Preferably, described silane coupling agent is 3-glycidyl ether oxygen propyl trimethoxy silicane.
Described oxidation inhibitor is one or more in antioxidant 1010, oxidation inhibitor 1098, antioxidant 1076, antioxidant 3114, irgasfos 168, oxidation inhibitor 626, oxidation inhibitor 627A.
Other described processing aid comprises one or more in UV light absorber, static inhibitor, anti-dripping agent, lubricant, releasing agent, fire retardant.
The preparation method of high tenacity height heat-conducting polymer material of the present invention, comprises following concrete steps:
(1) coupling agent is utilized to carry out surface treatment to heat conductive filler and carbon-fibre composite; Described coupling agent carries out surface-treated mode to heat conductive filler: be directly atomized by liquid coupling agent or be atomized so that anhydrous solvent dilution is rear by powder coupling agent, then heat conductive filler and carbon-fibre composite are passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by resin binder dry 3 ~ 6 hours of air blast 80 ~ 120 DEG C time;
(3) dried resin binder, oxidation inhibitor, toughner and other auxiliary agents are added in high-speed mixer and mix 5 ~ 20min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 250 ~ 400 revs/min
3. material controlled within 2min in the barrel residence time.
The present invention is as follows relative to the beneficial effect of prior art:
(1) by different shapes heat conductive filler with the use of, assist spherical, particulate state heat conductive filler with threadiness, carbon fiber that thermal conductivity is high, be equipped with crystal whisker-shaped heat conductive filler and form three dimentional heat conduction network;
(2) carbon fiber plays the bridge joint framework effect of three dimentional heat conduction network, crystal whisker-shaped heat conductive filler is through resin layer, connect each heat-conducting layer intercepted by resin, and particulate state heat conductive filler produces between more particle and contacts with each other a little, like this, because different shapes heat conductive filler is effectively piled up, perfect formation is had perfect network, better effects if thermal conducting path, and matrix material heat conductivility is effectively improved;
(3) coupling agent is utilized to carry out surface treatment to heat conductive filler, improve the interface performance of synthetic resins and heat conductive filler, the consistency of reinforcing filler and resin matrix, reduce the viscosity of molten synthetic resin, improve the dispersity of weighting agent to improve processing characteristics, and then make goods obtain good surface quality and mechanical property;
(4) carbon fiber and crystal whisker-shaped heat conductive filler have toughening effect to matrix material, and the toughner added has the superperformance of low-temperature impact-resistant, therefore this matrix material has high heat conduction and the high advantage of toughness concurrently, reduce the coefficient of linear expansion of heat-conducting plastic and alumina based material simultaneously, avoid the stress cracking of " moulding alclad " goods.
Embodiment
Be described in further details the present invention below by embodiment, these embodiments are only used for the present invention is described, do not limit the scope of the invention.
Embodiment 1 produces 6 kinds of different ingredients products (in table 1 1# ~ 6#) according to the formula in table 1, and compares with the product that the formula (7#) not adding carbon-fibre composite is produced.The physical property measurement result of producing the 7 kinds of variant productions obtained according to the formula in table 1 is as shown in table 2, result shows, the high tenacity height heat-conducting polymer material that the inventive method obtains has better effect in the mechanical property such as flexural strength, elongation at break and heat-conducting effect.
Table 1 formula for a product table (unit: weight part)
In above-mentioned formula, the concrete composition adopted is as follows:
(1) resin binder: relative viscosity is the translucent or emboliform polycaprolactam of opaque oyster white of 2.8;
(2) heat conductive filler: crystal whisker-shaped heat conductive filler (ZnOw) and particulate state heat conductive filler (calcine α-Al
2o
3, grain diameter is 5 ~ 10 μm, and purity is greater than 98%) and composite according to mass ratio 1:2;
(3) chopped carbon fiber of carbon-fibre composite: length 6-8um;
(4) toughner: maleic anhydride meets the SEBS of the maleic anhydride graft of skill rate 0.8%;
(5) coupling agent: 3-glycidyl ether oxygen propyl trimethoxy silicane:
(6) oxidation inhibitor: antioxidant 1076;
(7) processing aid: fire retardant, static inhibitor.
The preparation method that the present embodiment adopts is as follows:
(1) coupling agent is utilized to carry out surface treatment to heat conductive filler and carbon-fibre composite; After coupling agent 3-glycidyl ether oxygen propyl trimethoxy silicane is atomized, heat conductive filler and carbon-fibre composite are passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by polycaprolactam dry 4.5 hours of air blast 100 DEG C time;
(3) dried polycaprolactam, antioxidant 1076, toughner and other auxiliary agents are added in high-speed mixer and mix 15min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 350 revs/min;
3. material controlled within 2min in the barrel residence time.
Table 2 different ingredients product performance detected result
。
Embodiment 2 adopts following formula and step to realize the preparation of high tenacity height heat-conducting polymer material heat-conducting plastic of the present invention.
1, formula: resin binder (polycaprolactam, with industrialization liquid crystalline polymers, it is composite that 2:1:1 pressed by polypropylene) 55 parts, carbon-fibre composite (micro crystal graphite) 4 parts, (ZnOw and Zinc oxide particles be the composite talcum powder of 1:1 in mass ratio for heat conductive filler, aluminum oxide, silicon oxide, zinc oxide, magnesium oxide, calcium oxide, aluminium nitride, boron nitride, silicon carbide) 16 parts, toughner (SEBS of maleic anhydride graft) 0.5 part, coupling agent (3-glycidyl ether oxygen propyl trimethoxy silicane) 3 parts, 2 parts, oxidation inhibitor (antioxidant 1010), processing aid (releasing agent) 1 part.
2, preparation process:
(1) after 3-glycidyl ether oxygen propyl trimethoxy silicane being atomized, heat conductive filler and carbon-fibre composite are passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by resin binder dry 3 hours of air blast 120 DEG C time;
(3) dried resin binder, oxidation inhibitor, toughner and other auxiliary agents are added in high-speed mixer and mix 15min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 400 revs/min;
3. material controlled within 2min in the barrel residence time.
Embodiment 3 adopts following formula and step to realize the preparation of high tenacity height heat-conducting polymer material heat-conducting plastic of the present invention.
1, fill a prescription: resin binder (polyhexamethylene adipamide, polyphenylene sulfide, acrylonitrile-butadiene-styrene copolymer, composite by 1:1:1) 35 parts, carbon-fibre composite (chopped carbon fiber) 3.5 parts, heat conductive filler (ZnOw and calcium oxide particle in mass ratio 1:3 are composite) 36 parts, toughner (POE and EVA is composite) 3 parts, coupling agent (liquid silane coupling agent) 0.1 ~ 2 part, 1 part, oxidation inhibitor (primary antioxidant 1098, auxiliary antioxidant 168), processing aid (fire retardant) 5 parts.
2, preparation process:
(1) after even liquid silane coupling agent being atomized, heat conductive filler and carbon-fibre composite are passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by resin binder dry 6 hours of air blast 80 DEG C time;
(3) dried resin binder, oxidation inhibitor, toughner and other auxiliary agents are added in high-speed mixer and mix 5min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 400 revs/min;
3. material controlled within 2min in the barrel residence time.
Embodiment 4 adopts following formula and step to realize the preparation of high tenacity height heat-conducting polymer material heat-conducting plastic of the present invention.
1, fill a prescription: resin binder (polyhexamethylene adipamide) 65 parts, carbon-fibre composite (micro crystal graphite) 5 parts, heat conductive filler (1:2 is composite in mass ratio for aluminium nitride whisker and silicon carbide micro-powder particle) 60 parts, toughner (SEBS) 10 parts, coupling agent (titanate coupling agent) 5 parts, 4 parts, oxidation inhibitor (oxidation inhibitor 627A), processing aid (lubricant, releasing agent, fire retardant) 10 parts.
2, preparation process:
(1) titanate coupling agent coupling agent diluted with anhydrous solvent and be atomized, then heat conductive filler and carbon-fibre composite being passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by resin binder dry 4 hours of air blast 110 DEG C time;
(3) dried resin binder, oxidation inhibitor, toughner and other auxiliary agents are added in high-speed mixer and mix 10min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 250 revs/min;
3. material controlled within 2min in the barrel residence time.
Embodiment 5 adopts following formula and step to realize the preparation of high tenacity height heat-conducting polymer material heat-conducting plastic of the present invention.
1, fill a prescription: resin binder (polybutylene terephthalate, acrylonitrile-butadiene-styrene copolymer 1:1 are composite) 46 parts, carbon-fibre composite (micro crystal graphite) 4.2 parts, heat conductive filler (boron nitride crystal whisker and talcum powder in mass ratio 1:3 are composite) 25 parts, toughner (SEBS of maleic anhydride graft) 8 parts, coupling agent (aluminate coupling agent) 4 parts, 3 parts, oxidation inhibitor (antioxidant 3114), processing aid (anti-dripping agent, lubricant) 8 parts.
2, preparation process:
(1) aluminate coupling agent diluted with anhydrous solvent and after being atomized, heat conductive filler and carbon-fibre composite passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by resin binder dry 5 hours of air blast 100 DEG C time;
(3) dried resin binder, oxidation inhibitor, toughner and other auxiliary agents are added in high-speed mixer and mix 20min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 300 revs/min;
3. material controlled within 2min in the barrel residence time.
The above is preferred embodiment of the present invention, but does not limit protection scope of the present invention with this.
Claims (10)
1. a high tenacity height heat-conducting polymer material, is characterized in that: be made up of the component of following composition weight number: resin binder 30 ~ 65 parts, carbon-fibre composite 3 ~ 5 parts, heat conductive filler 8 ~ 60 parts, toughner 0.5 ~ 10 part, coupling agent 0.1 ~ 5 part, 0.1 ~ 4 part, oxidation inhibitor, processing aid 0.1 ~ 10 part; Described carbon-fibre composite is that the organic fibres such as flake graphite crystallite are piled up along fiber axial direction due and formed, the micro crystal graphite material obtained through carbonization and graphitization processing; Described resin binder is one or more composite in polycaprolactam, polyhexamethylene adipamide, industrialization liquid crystalline polymers, polyphenylene sulfide, polyethylene terephthalate, polybutylene terephthalate, polyether-ether-ketone, acrylonitrile-butadiene-styrene copolymer, polypropylene; Described coupling agent is a kind of in organic complex, silicane, titanate ester and aluminate coupling agent.
2. high tenacity height heat-conducting polymer material according to claim 1, is characterized in that: described carbon-fibre composite is chopped carbon fiber or the micro crystal graphite of length 6-8um.
3. high tenacity height heat-conducting polymer material according to claim 1, is characterized in that: described heat conductive filler comprises crystal whisker-shaped heat conductive filler and particulate state heat conductive filler, described crystal whisker-shaped heat conductive filler and particulate state heat conductive filler composite according to mass ratio 1:1 ~ 3.
4. high tenacity height heat-conducting polymer material according to claim 1, is characterized in that: described heat conductive filler is that one or more in talcum powder, aluminum oxide, silicon oxide, zinc oxide, magnesium oxide, calcium oxide, aluminium nitride, boron nitride, silicon carbide are carried out composite.
5. high tenacity height heat-conducting polymer material according to claim 5, is characterized in that: described aluminum oxide is ball-aluminium oxide, and main component is calcining α-Al
2o
3, grain diameter is 5 ~ 10 μm, and purity is greater than 98%.
6. high tenacity height heat-conducting polymer material according to claim 1, is characterized in that: described resin binder to be relative viscosity be 2.8 the translucent or emboliform polycaprolactam of opaque oyster white.
7. high tenacity height heat-conducting polymer material according to claim 1, it is characterized in that: described toughner is ethylene-octene copolymer (POE), the POE of ethylene-vinyl acetate copolymer (EVA), maleic anhydride graft, be end segment with polystyrene, the ethylene-butene copolymer obtained with polyhutadiene hydrogenation is one or more in the SEBS of the linear three embedding multipolymers (SEBS) of middle spring block, maleic anhydride graft.
8. high tenacity height heat-conducting polymer material according to claim 7, is characterized in that: described toughner is the SEBS that maleic anhydride connects the maleic anhydride graft of skill rate 0.8%.
9. high tenacity height heat-conducting polymer material according to claim 1, is characterized in that: described silane coupling agent is 3-glycidyl ether oxygen propyl trimethoxy silicane.
10. high tenacity height heat-conducting polymer material according to claim 1, is characterized in that: comprise following concrete steps:
(1) coupling agent is utilized to carry out surface treatment to heat conductive filler and carbon-fibre composite; Described coupling agent carries out surface-treated mode to heat conductive filler: be directly atomized by liquid coupling agent or be atomized so that anhydrous solvent dilution is rear by powder coupling agent, then heat conductive filler and carbon-fibre composite are passed in spray chamber, the drop parcel after coupled dose of heat conductive filler is atomized;
(2) by resin binder dry 3 ~ 6 hours of air blast 80 ~ 120 DEG C time;
(3) dried resin binder, oxidation inhibitor, toughner and other auxiliary agents are added in high-speed mixer and mix 5 ~ 20min, mixed material loads the main feed system of forcing machine;
(4) step (1) surface treated heat conductive filler and carbon-fibre composite are added the side feed system of twin screw extruder, by controlling the content of the feeding frequency control insulating heat-conductive filler of main, side feed system, through melting, extrude, granulation, water-cooled, air-dry, pelletizing, drying, obtain high tenacity height heat-conducting polymer material heat-conducting plastic;
The fabrication process condition of described twin screw extruder is as follows:
1. temperature is: 160 ~ 180 DEG C, a district, two 170 ~ 220 DEG C, districts, three 200 ~ 250 DEG C, districts, four 200 ~ 250 DEG C, districts, five 210 ~ 250 DEG C, districts, six 190 ~ 250 DEG C, districts, head 200 ~ 240 DEG C;
2. screw speed is: 250 ~ 400 revs/min
3. material controlled within 2min in the barrel residence time.
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