CN103571185B - A kind of insulation engineering plastics and its preparation method with high thermal conductivity - Google Patents
A kind of insulation engineering plastics and its preparation method with high thermal conductivity Download PDFInfo
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- CN103571185B CN103571185B CN201310329268.5A CN201310329268A CN103571185B CN 103571185 B CN103571185 B CN 103571185B CN 201310329268 A CN201310329268 A CN 201310329268A CN 103571185 B CN103571185 B CN 103571185B
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- 229920006351 engineering plastic Polymers 0.000 title claims abstract description 51
- 238000009413 insulation Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000011231 conductive filler Substances 0.000 claims abstract description 60
- 239000010445 mica Substances 0.000 claims abstract description 49
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 49
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 239000011159 matrix material Substances 0.000 claims abstract description 33
- 239000003063 flame retardant Substances 0.000 claims abstract description 31
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 21
- 239000007822 coupling agent Substances 0.000 claims description 16
- -1 amino silicane Chemical compound 0.000 claims description 13
- 238000001746 injection moulding Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005469 granulation Methods 0.000 abstract description 2
- 230000003179 granulation Effects 0.000 abstract description 2
- 229920002292 Nylon 6 Polymers 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 229920003189 Nylon 4,6 Polymers 0.000 description 4
- 229920002302 Nylon 6,6 Polymers 0.000 description 4
- 239000004954 Polyphthalamide Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 description 4
- 229920006375 polyphtalamide Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920000265 Polyparaphenylene Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical group C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- 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
-
- 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
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
The present invention relates to a kind of insulation engineering plastics and its preparation method with high thermal conductivity. Component and the weight part number of these engineering plastics be: matrix resin 100 parts; Mica powder 25��350 parts; Insulating heat-conductive filler 25��350 parts; Fire retardant 30��60 parts; Processing aid 0��5 part. The preparation method of the present invention is that insulating heat-conductive filler adds from side in extrusion, reduces heat conductive filler to the abrasion of equipment through twin screw extruder granulation after mica powder, fire retardant, processing aid and matrix resin being mixed. Insulating heat-conductive engineering plastics prepared by the present invention have excellent heat conductivility and excellent mechanical property, can meet the requirement of the application scenario of high heat conduction and high flame retardant, can be applicable to preparation LED lamp heat sink.
Description
Technical field
The present invention relates to field of polymer composite material, particularly relate to a kind of insulation engineering plastics and its preparation method with high thermal conductivity.
Background technology
Along with the enhancing gradually of people's environmental consciousness, research and development and the production of various environmentfriendly products are also more and more subject to people's attention. Such as the novel energy-conserving electroluminescent diode (LED) of new industry, having the advantages such as volume is little, luminous efficiency height, energy consumption are low, brightness height, environmental protection, therefore its research and use enjoy the concern of international community.
Insulation engineering plastics can make LED component, such as shell, scatterer, substrate, reverberator, plug-in unit and other parts etc. The insulation engineering plastics with heat conductivility can replace traditional aluminium and make scatterer, owing to the density of the engineering plastics that insulate is lighter than aluminium, so the 1/2 of the only traditional aluminium radiator of the quality of plastic heat radiation device. Plastic heat radiation device can be processed with injection moulding, and its shaping cycle can shorten 20%��50%. And make scatterer with the plastics of heat conductive insulating and just can adopt non-isolated power supply and its safety problem need not be worried.
But, owing to most macromolecular material itself belongs to heat insulating ability material, therefore generally there is the shortcomings such as heat conductivility difference, mechanical property are low in the existing insulation engineering plastics being made up of macromolecular material, limits its application in electronic enterprises. Its heat conductivility can be improved by insulation engineering plastics are carried out modification, but while improving heat conductivility, easily reduce its mechanical property and insulating property, and cost of manufacture is higher, the requirement of the application scenario of high heat conduction, high flame retardant can not be met, especially can not solve the heat dissipation problem of electronics well.
Summary of the invention
In order to overcome the above problems, there is it is desirable to provide a kind of insulation engineering plastics and its preparation method of high thermal conductivity. The present invention is used by the collocation of mica powder and insulating heat-conductive filler, obtains the insulation engineering plastics of excellent thermal conductivity with lower cost.
First aspect, the present invention provides a kind of insulation engineering plastics with high thermal conductivity, and its component and weight part number be:
Preferably, matrix resin is nylon 6(PA6), nylon66 fiber (PA66), polybutylene terephthalate (PBT), Polyphenylene sulfied ether (PPS), one or more in nylon 46 (PA46) and polyphthalamide (PPA).
Preferably, mica powder is sericite. Sericite has more rich resource in China, it is easy to acquisition and price are cheap.
Preferably, insulating heat-conductive filler is one or both in magnesium oxide, aluminum oxide, zinc oxide, silicon powder.
Preferably, the particle diameter of insulating heat-conductive filler is 2��125 ��m.
The fire retardant that the present invention uses is the various fire retardants used conventional in this area. Preferably, fire retardant is brominated polystyrene (PBS) and antimonous oxide (Sb2O3) by the mixture of 3:1 composition.
Preferably, processing aid be selected from coupling agent, antioxidant and lubricant one or more. More preferably, coupling agent is amino silicane coupling agent, antioxidant be 1010 with 168 mixtures that 3:2 mixes by volume, lubricant is ethylene bis stearic acid amide.
More preferably, amino silicane coupling agent is ��-aminopropyl triethoxysilane (kh-550).
Preferably, the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 1:1��4:1.
More preferably, the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 3:1��4:1.
Most preferably, the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 4:1.
Preferably, the ratio of weight and number of mica powder and insulating heat-conductive filler is 1:6��6:1.
More preferably, the ratio of weight and number of mica powder and insulating heat-conductive filler is 4:3��5:2.
Most preferably, the ratio of weight and number of mica powder and insulating heat-conductive filler is 5:2.
Preferably, a kind of insulation engineering plastics with high thermal conductivity comprise: matrix resin 100 parts, mica powder 70��150 parts, insulating heat-conductive filler 70��150 parts, fire retardant 30��60 parts and processing aid 0��5 part.
Preferably, a kind of insulation engineering plastics with high thermal conductivity comprise: matrix resin 100 parts, mica powder 350 parts, insulating heat-conductive filler 25��350 parts, fire retardant 30��60 parts and processing aid 0��5 part.
Preferably, a kind of insulation engineering plastics with high thermal conductivity comprise: matrix resin 100 parts; Mica powder 70��150 parts; Insulating heat-conductive filler 70��150 parts; Fire retardant 30��60 parts; Processing aid 0��5 part.
Second aspect, the present invention provides the preparation method of a kind of insulation engineering plastics with high thermal conductivity, comprises the following steps:
Step 1: get following component according to weight part number: matrix resin 100 parts, mica powder 25��350 parts, insulating heat-conductive filler 25��350 parts, fire retardant 30��60 parts and processing aid 0��5 part;
Step 2: matrix resin and processing aid are added mixing machine, continues stirring 3��8 minutes;
Step 3: add mica powder and auxiliary agent to mixing machine, continues stirring 3��6 minutes;
Step 4: add fire retardant to mixing machine, continues stirring 2��4 minutes;
Step 5: compound and insulating heat-conductive filler are added respectively extruder main feeding and side direction feeding loading hopper, extruding pelletization, there are described in obtaining the insulation engineering plastics of high thermal conductivity.
Preferably, insulating heat-conductive filler adds from twin screw extruder the 4th section of side.
The third aspect, the present invention provides the application of the insulation engineering plastics with high thermal conductivity as described in the first aspect of the invention in the scatterer of photodiode.
A kind of insulation engineering plastics with high thermal conductivity provided by the invention, have following positively effect:
(1) in the engineering plastics component that insulate, mica powder and the collocation of insulating heat-conductive filler use, the mica powder of spherical insulating heat-conductive filler and laminate structure forms continuous print thermal conductive network chain, thus obtain high thermal conductivity, its thermal conductivity reaches 5W/mk, can meet the requirement of the application scenario of high heat conduction and high flame retardant; The insulating heat-conductive filler that a large amount of use is expensive individually can also be avoided simultaneously, thus reduce preparation cost;
(2) mica powder surface has activity hydroxy, easy and molecular chain end group combines, in matrix resin arranged in parallel, make its inner reticulated structure forming a kind of densification, make insulation engineering plastics provided by the invention while keeping excellent heat conductivility, also there is good mechanical property, and that resist warping deformation characteristic;
(3) insulation engineering plastics density provided by the invention is little, light weight, is applicable to LED radiator, makes LED adopt non-isolated power supply and need not worry its safety problem.
In the preparation method of a kind of insulation engineering plastics with high thermal conductivity provided by the invention, mica powder and insulating heat-conductive filler are separated interpolation, more easily operate, insulating heat-conductive filler adds fashionable matrix resin and has been in molten state, the matrix resin that can be melted preferably is coated, reduce the abrasion to equipment, it is more conducive to painted.
Embodiment
In order to make the object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
The present invention provides a kind of insulation engineering plastics, these insulation engineering plastics have high thermal conductivity, its thermal conductivity reaches 5W/mk, the requirement of the application scenario of high heat conduction and high flame retardant can be met, wherein containing component: matrix resin 100 parts, mica powder 25��350 parts, insulating heat-conductive filler 25��350 parts, fire retardant 30��60 parts and processing aid 0��5 part.
Preferably, matrix resin is nylon 6(PA6), nylon66 fiber (PA66), polybutylene terephthalate (PBT), Polyphenylene sulfied ether (PPS), one or more in nylon 46 (PA46) and polyphthalamide (PPA).
Preferably, mica powder is sericite. Sericite has more rich resource in China, it is easy to acquisition and price are cheap.
Preferably, insulating heat-conductive filler is one or both in magnesium oxide, aluminum oxide, zinc oxide, silicon powder.
Select the insulating heat-conductive filler combination of different-grain diameter can obtain different degree of piling up, overall heat-conducting effect can be improved by improving the degree of piling up of filler.
Preferably, the particle diameter of insulating heat-conductive filler is 2��125 ��m.
The fire retardant that the present invention uses is the various fire retardants used conventional in this area. Preferably, fire retardant is brominated polystyrene (PBS) and antimonous oxide (Sb2O3) by the mixture of 3:1 composition.
The present invention can use processing aid to be beneficial to machine-shaping. Preferably, processing aid be selected from coupling agent, antioxidant and lubricant one or more. Use coupling agent can improve the interface between insulating heat-conductive filler, mica powder, matrix resin, reduce the thermal resistance of interface, reach good heat-conducting effect.
More preferably, coupling agent is amino silicane coupling agent, antioxidant be 1010 with 168 mixtures that 3:2 mixes by volume, lubricant is ethylene bis stearic acid amide.
More preferably, amino silicane coupling agent is ��-aminopropyl triethoxysilane (kh-550).
Mica powder surface has activity hydroxy, easy and molecular chain combines, the layer reticulated structure of a kind of densification is formed so that insulation engineering plastics provided by the invention, while keeping excellent heat conductivility, also have good mechanical property and that resist warping distortion ability at matrix resin.
Preferably, the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 1:1��4:1.
More preferably, the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 3:1��4:1.
Most preferably, the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 4:1.
Mica powder and the collocation of insulating heat-conductive filler use, and the mica powder of spherical insulating heat-conductive filler and laminate structure forms continuous print thermal conductive network chain, thus can obtain high thermal conductivity, can meet the requirement of the application scenario of high heat conduction and high flame retardant. The insulating heat-conductive filler that a large amount of use is expensive individually can also be avoided simultaneously, thus reduce preparation cost.
Preferably, the ratio of weight and number of mica powder and insulating heat-conductive filler is 1:6��6:1.
More preferably, the ratio of weight and number of mica powder and insulating heat-conductive filler is 4:3��5:2.
Most preferably, the ratio of weight and number of mica powder and insulating heat-conductive filler is 5:2.
Preferably, a kind of insulation engineering plastics with high thermal conductivity comprise: matrix resin 100 parts, mica powder 70��150 parts, insulating heat-conductive filler 70��150 parts, fire retardant 30��60 parts and processing aid 0��5 part.
Preferably, a kind of insulation engineering plastics with high thermal conductivity comprise: matrix resin 100 parts, mica powder 350 parts, insulating heat-conductive filler 25��350 parts, fire retardant 30��60 parts and processing aid 0��5 part.
Preferably, a kind of insulation engineering plastics with high thermal conductivity comprise: matrix resin 100 parts; Mica powder 70��150 parts; Insulating heat-conductive filler 70��150 parts; Fire retardant 30��60 parts; Processing aid 0��5 part.
The preparation method of the present invention, comprises the following steps:
Step 1: get following component according to weight part number: matrix resin 100 parts, mica powder 25��350 parts, insulating heat-conductive filler 25��350 parts, fire retardant 30��60 parts and processing aid 0��5 part;
Step 2: matrix resin and processing aid are added mixing machine, continues stirring 3��8 minutes;
Step 3: add mica powder and auxiliary agent to mixing machine, continues stirring 3��6 minutes;
Step 4: add fire retardant to mixing machine, continues stirring 2��4 minutes;
Step 5: compound and insulating heat-conductive filler are added respectively extruder main feeding and side direction feeding loading hopper, extruding pelletization, injection moulding, there are described in obtaining the insulation engineering plastics of high thermal conductivity.
Preferably, insulating heat-conductive filler adds from twin screw extruder the 4th section of side.
Through twin screw extruder granulation after mica powder, fire retardant, processing aid and matrix resin being mixed, insulating heat-conductive filler adds from forcing machine the 4th section of side in extrusion, reduces heat conductive filler to the abrasion of equipment. Mica powder separates interpolation with insulating heat-conductive filler, more easily operates, and insulating heat-conductive filler adds fashionable matrix resin and has been in molten state, it is possible to the matrix resin being melted preferably is coated, reduces the abrasion to equipment, is more conducive to painted.
The engineering plastics of offer prepared by the present invention are applicable to LED component field, are particularly useful for preparation LED radiator.
Embodiment 1
Insulation engineering plastics with high thermal conductivity, obtain by the following method: PA6 resin and amino silicane coupling agent are added mixing machine, stir 5min; Then add mica powder and other processing aid to mixing machine, continue to stir 5min; Then add fire retardant to mixing machine and stir 3min again; Compound is added in twin-screw extrusion owner's feeding hopper, insulating heat-conductive filler magnesium oxide is added in the feeding hopper of twin screw extruder side; Extruding pelletization, temperature sets 230 DEG C-260 DEG C, obtained insulating heat-conductive PA6 engineering plastics particle, and insulation engineering plastics performance is surveyed in injection moulding.
Embodiment 2��15
Preparation method is with embodiment 1, and difference is only that component and consumption are different, specifically refers to table 1.
Comparative example 1
A kind of insulation engineering plastics, obtain by the following method: PA6 resin and amino silicane coupling agent are added mixing machine, stir 5min; Then add magnesium oxide and other auxiliary agent to mixing machine, continue to stir 5min; Then add fire retardant to mixing machine and stir 3min again; Compound is added in twin-screw extrusion owner's feeding hopper; Extruding pelletization, temperature sets 230 DEG C-260 DEG C, obtained insulating heat-conductive PA6 engineering plastics particle, injection moulding test performance.
Comparative example 2
A kind of insulation engineering plastics, obtain by the following method: PA6 resin and amino silicane coupling agent are added mixing machine, stir 5min; Then add insulating heat-conductive filler magnesium oxide and other processing aid to mixing machine, continue to stir 5min; Then add fire retardant to mixing machine and stir 3min again; Being added to by compound in twin-screw extrusion owner's feeding hopper, extruding pelletization, temperature sets 230 DEG C-260 DEG C, obtained insulating heat-conductive PA6 engineering plastics particle, test performance after injection moulding.
Comparative example 3
A kind of insulation engineering plastics, obtain by the following method: PA6 resin and amino silicane coupling agent are added mixing machine, stir 5min; Then add mica powder and other processing aid to mixing machine, continue to stir 5min; Then add fire retardant to mixing machine and stir 3min again; Being added to by compound in twin-screw extrusion owner's feeding hopper, extruding pelletization, temperature sets 230 DEG C-260 DEG C, and obtained insulating heat-conductive PA6 engineering plastics particle, obtains having the insulation engineering plastics of high thermal conductivity after injection moulding.
Comparative example 4��6
Preparation method is with embodiment 1, and difference is only that component and consumption are different, specifically refers to table 1.
The component of table 1 embodiment 1��15 and weight part number (unit: part)
Effect example
By injection moulding, the product of embodiment 1��15 and comparative example 1��6 gained is obtained standard testing batten, and test heat conductivility, mechanical property, electrical property etc., test result is in table 2.
The performance test results of table 2 embodiment 1��15 and comparative example 1��6
In comparative example 1, insulating heat-conductive filler adds from main feeding, compared with the embodiment of the present invention, physicals is basically identical, but finished color is Dark grey, illustrate that the abrasion to equipment is bigger, and embodiment of the present invention color is light grey, illustrates that the improvement of technique reduces the abrasion to equipment, be more conducive to painted.
Comparative example 2 and comparative example 3 are respectively the situation only using insulating heat-conductive filler and mica powder. From test result, its comprehensive heat conductivility and hot undesirable. And the embodiment of the present invention is used by the collocation of mica powder and insulating heat-conductive filler, obtain excellent heat-conducting effect, and the mechanical property of material and thermotolerance are significantly increased, with mica powder Some substitute heat conductive filler, when heat conductivility is kept substantially, mechanical property and thermotolerance are all improved.
From embodiment 1��10 it may be seen that mica powder consumption replaces major part insulating heat-conductive filler still can obtain good heat-conducting effect. By the contrast of embodiment 10��15 and comparative example 4��6 it may be seen that more excellent over-all properties can be obtained when the total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 4:1.
The foregoing is only the better embodiment of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. done within the spirit and principles in the present invention, all should be included within protection scope of the present invention.
Claims (7)
1. insulation engineering plastics with high thermal conductivity, its component and weight part number be:
Described insulating heat-conductive filler is one or both in magnesium oxide, aluminum oxide, zinc oxide, silicon powder, and its particle diameter is 2��125 ��m;
The total weight parts number sum of mica powder and insulating heat-conductive filler and the ratio of weight and number of matrix resin are 1: 1��4: 1.
2. the insulation engineering plastics as claimed in claim 1 with high thermal conductivity, its component and weight part number be:
3. the insulation engineering plastics as claimed in claim 1 with high thermal conductivity, its component and weight part number be:
4. the insulation engineering plastics with high thermal conductivity as described in as arbitrary in claims 1 to 3, it is characterised in that, described processing aid be selected from coupling agent, antioxidant and lubricant one or more.
5. there are the insulation engineering plastics of high thermal conductivity as claimed in claim 4, it is characterised in that, described coupling agent is amino silicane coupling agent.
6. there are the insulation engineering plastics of high thermal conductivity as claimed in claim 1, it is characterised in that, the ratio of weight and number of mica powder and insulating heat-conductive filler is 1: 6��6: 1.
7. a preparation method as claimed in claim 1 with the insulation engineering plastics of high thermal conductivity, comprises the following steps:
Step 1: get following component according to weight part number: matrix resin 100 parts, mica powder 25��350 parts, insulating heat-conductive filler 25��350 parts, fire retardant 30��60 parts and processing aid 0��5 part;
Step 2: matrix resin and processing aid are added mixing machine, continues stirring 3��8 minutes;
Step 3: add mica powder and auxiliary agent to mixing machine, continues stirring 3��6 minutes;
Step 4: add fire retardant to mixing machine, continues stirring 2��4 minutes;
Step 5: compound and insulating heat-conductive filler are added respectively extruder main feeding and side direction feeding loading hopper, extruding pelletization, injection moulding, there are described in obtaining the insulation engineering plastics of high thermal conductivity.
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| CN104292825A (en) * | 2014-07-08 | 2015-01-21 | 东莞市众一新材料科技有限有限公司 | Flame-retardant reinforced high temperature nylon composite material and its preparation method |
| CN104610737A (en) * | 2014-10-15 | 2015-05-13 | 东莞市雷毅德塑胶科技有限公司 | Heat-conduction and insulation plastic material with high-impact resistant and flame retardation |
| CN104610740A (en) * | 2015-01-30 | 2015-05-13 | 上海日之升新技术发展有限公司 | Material for new energy battery cases and preparation method of material |
| CN105062046A (en) * | 2015-09-01 | 2015-11-18 | 惠州市华聚塑化科技有限公司 | PPA composite material |
| CN108129834A (en) * | 2017-12-28 | 2018-06-08 | 许飞扬 | A kind of flame-resistant insulation composite nylon material |
| CN108424640A (en) * | 2018-04-03 | 2018-08-21 | 深圳市优化新材料科技有限公司 | A kind of modified polyamide 46, preparation method and its application |
| CN112223576A (en) * | 2020-09-07 | 2021-01-15 | 金旸（厦门）新材料科技有限公司 | Preparation method of high-yield heat-conducting nylon |
| CN112480522A (en) * | 2020-11-17 | 2021-03-12 | 常州市沃科科技有限公司 | Fireproof mica insulation composite material and preparation method thereof |
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