CN102775767B - High-heat-conduction nylon composite material and preparation method thereof - Google Patents
High-heat-conduction nylon composite material and preparation method thereof Download PDFInfo
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- CN102775767B CN102775767B CN201210156510.9A CN201210156510A CN102775767B CN 102775767 B CN102775767 B CN 102775767B CN 201210156510 A CN201210156510 A CN 201210156510A CN 102775767 B CN102775767 B CN 102775767B
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- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 239000004677 Nylon Substances 0.000 title claims abstract description 25
- 229920001778 nylon Polymers 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000654 additive Substances 0.000 claims abstract description 33
- 230000000996 additive effect Effects 0.000 claims abstract description 33
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 25
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 21
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 10
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000007822 coupling agent Substances 0.000 claims description 9
- 239000003112 inhibitor Substances 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 7
- 150000004645 aluminates Chemical class 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 239000013589 supplement Substances 0.000 description 4
- 229920002302 Nylon 6,6 Polymers 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002114 nanocomposite Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 235000021438 curry Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- 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
- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
Abstract
The invention relates to a high-heat-conduction nylon composite material and a preparation method thereof. The nylon composite material is prepared from the following raw materials in percentage by weight: 35-89% of nylon 6, 10-60% of graphite powder subjected to surface treatment, 0.6-5% of performance additive, 0.1-0.2% of rare-earth element yttrium and 0.2-10% of aluminum fiber by grinding, mixing and extrusion modeling. The nylon composite material prepared by the preparation method provided by the invention has the high heat conduction property; and the stretch intensity and the flexural strength are improved.
Description
Technical field
The present invention relates to polymeric material field, relate in particular to nylon composite materials of a kind of high heat conduction and preparation method thereof.
Background technology
Mostly the at present domestic report of the research to the heat-conductive composite material of different field is thermal conductive adhesive, heat conductive rubber, heat conduction Embedding Material, to the research of high thermal conductivity plastic material, be mainly that to take PE, PP and epoxy resin be base material, and less to the research of thermoplastic engineering plastic and patent.Output occupies the nylon of engineering plastics first place, owing to thering is good mechanical property and good electrical property, there is again wear-resisting, oil resistant, resistance to solvent, self-lubricating, corrosion-resistant and good advantages such as processing characteristics, be widely used in the fields such as automobile, electronic apparatus, machinery, electric, weapons.Nylon 6(polyamide 6, is called for short PA6) be a kind of engineering plastics of excellence, there is good non-notch impact resistance.And its thermal conductivity is lower, be 0.30W/mk, this has limited its application in fields such as heat radiation, heat conduction.
Chinese patent publication No. CN 102372919 A, date of publication on March 14th, 2012, name is called a kind of wear resistant nylon 66 nanocomposite, this application case discloses a kind of wear resistant nylon 66 nanocomposite, by following component, formed by weight the nylon 66 of 98-100, the nano-silicon nitride of 0.05-1, the irgasfos 168 of the antioxidant 1010 of 0.1-0.4 and 0.1-0.4.Its weak point is, the nylon composite materials heat conductivility making is poor.
Summary of the invention
One of object of the present invention is to provide in order to solve the poor defect of prior art nylon composite materials heat conductivility a kind of nylon composite materials of high heat conduction.
Another object of the present invention is to provide a kind of preparation method of nylon composite materials of high heat conduction.
To achieve these goals, the present invention is by the following technical solutions:
A nylon composite materials for high heat conduction, described nylon composite materials is become by the mixed raw material of following weight percent: nylon 6 35-89%, surface treated Graphite Powder 99 10-60%, modified additive 0.6-5%, rare earth element yttrium 0.1-0.2% and aluminum fiber 0.2-10%.In the technical program, the thermal conductivity of nylon 6 is only 0.30 W/mk, Graphite Powder 99 have thermal conductivity high, easily disperse and the characteristic of stable performance, in nylon 6 powders, add Graphite Powder 99, be conducive to improve the heat conductivility of matrix material; And aluminum fiber be compare with traditional steel fiber copper fiber have more that fusing point is low, hardness is low, can noise reduction, the characteristic such as good heat conductivity, heavy metal free pollution, aluminum ratio is heavily 30% of copper, therefore aluminium fiber, adds aluminum fiber further to promote the heat conductivility of matrix material.The modified additive that adds 0.6-5%, can effectively improve the performance of nylon 6 composite material, if add too much, can cause the variation of nylon 6 composite material performance; Add 0.2-10% volume aluminum fiber, can effectively improve the thermal conductivity of nylon 6 composite material, but add too much, can cause that the plasticity of nylon 6 composite material sharply reduces; Rare earth element yttrium is as a kind of high-temperature superconductor, its heat conductivility is remarkable, if add too much, can be because of yttrium unstable reduction that causes nylon 6 composite material performance in air, therefore the present invention compares through repetition test and optimizes, and determines nylon 6 35-89%, surface treated Graphite Powder 99 10-60%, modified additive 0.6-5%, rare earth element yttrium 0.1-0.2% and aluminum fiber 0.2-10%.
As preferably, described modified additive is comprised of the material of following weight percent: oxidation inhibitor 0.1-10%, photostabilizer 0.1-10%, dispersion agent 0.1-80% and coupling agent 0.1-80%.In the technical program, oxidation inhibitor is selected oxidation inhibitor B225, and it is by primary antioxidant 1010 and auxiliary antioxidant 168 is composite forms, and can maintain original melting index, and low look dirty.Photostabilizer selects 783; Dispersion agent is selected Honeywell A-C 6A, and coupling agent is titanate coupling agent NDZ311.
As preferably, the surface-treated concrete steps of described surface treated Graphite Powder 99 are that the Aluminate of the 1/10-1/2 of Graphite Powder 99 content and Graphite Powder 99 are stirred to 25-35min; The fineness of Graphite Powder 99 is 100-150 μ m.In the technical program, Graphite Powder 99, through surface treatment, is improved to fineness, brightness and reduces viscosity, increase the sticking power of Graphite Powder 99.
As preferably, the diameter of described aluminum fiber is 25-35 μ m, and length is 2-4mm.
As preferably, the granularity of described nylon 6 is 80-100 order.
A preparation method for the nylon composite materials of heat conduction, described preparation method comprises the following steps:
A) nylon 6 is ground, obtain 80-100 object nylon 6 powders, under nitrogen atmosphere, rare earth element yttrium is worn into the powder of 2-4mm;
B) nylon 6 powders that step a) obtained and rare earth element yttrium and surface treated Graphite Powder 99, modified additive are under nitrogen atmosphere, with the stirrer of preparing burden at a high speed, stir 5-20min, then in high speed is prepared burden stirrer, add aluminum fiber, continue to stir 2-3min, obtain mixture;
C) mixture step b) being made is through double-screw extruder screw extrusion moulding.
As preferably, in step c), the processing temperature of twin screw extruder is 280-295 ℃, feeding frequency 5-20Hz, engine speed 200-500r/min.
As preferably, described nylon composite materials is become by the mixed raw material of following weight percent: nylon 6 35-89%, surface treated Graphite Powder 99 10-60%, modified additive 0.6-5%, rare earth element yttrium 0.1-0.2% and aluminum fiber 0.2-10%.
The invention has the beneficial effects as follows, the thermal conductivity of the prepared nylon composite materials of the present invention significantly promotes, and tensile strength, flexural strength also have lifting simultaneously.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further explained:
Embodiment 1
A preparation method for the nylon composite materials of heat conduction, by following weight percent preparation raw material,
| Material name | Weight percent/% |
| Nylon 6 | 89 |
| Surface treated Graphite Powder 99 | 10 |
| Modified additive | 0.6 |
| Aluminum fiber | 0.2 |
| Rare earth element yttrium | 0.2 |
Wherein modified additive is comprised of the material of following weight percent: oxidation inhibitor B225, and content is 0.1% of modified additive weight; Photostabilizer 783, content is 10% of modified additive weight; Dispersion agent Honeywell A-C 6A, content is 80% of modified additive weight; Titanate coupling agent NDZ311, content is 9.9% of modified additive weight.
The surface treatment of Graphite Powder 99 is that 0.1 Aluminate of Graphite Powder 99 content and Graphite Powder 99 are stirred to 25min; Wherein the fineness of Graphite Powder 99 is 100 μ m.
Wherein nylon 6 is purchased from Taiwan Ji Sheng Industrial Co., Ltd., and model is PA T4208; Graphite Powder 99 is purchased from carbon materials company limited, and model is K-15; Oxidation inhibitor B225 is purchased from Nanjing Holley bright science, industry and trade company limited; Photostabilizer 783 is purchased from Milan, Nanjing Chemical Co., Ltd.; Dispersion agent reaches environmentally-friendly plastic Chemical Co., Ltd. purchased from Shenzhen curry favour, model Honeywell A-C 6A; Coupling agent is purchased from Guangzhou Rui Chi Chemical Co., Ltd., and model is titanate coupling agent NDZ311; Aluminum fiber is purchased from Shanghai Zhi Yi novel material Science and Technology Ltd..
Described preparation method comprises the following steps:
A) nylon 6 is ground, obtain 80 object nylon 6 powders, under nitrogen atmosphere, rare earth element yttrium is worn into the powder of 4mm;
B) nylon 6 powders that step a) obtained and rare earth element yttrium powder and surface treated Graphite Powder 99, modified additive are under nitrogen atmosphere, with stirring 5min in the stirrer of preparing burden at a high speed, then to the aluminum fiber that adds diameter 25 μ m, length 2mm in high speed is prepared burden stirrer, continue to stir 2min, obtain mixture;
C) mixture step b) being made is through double-screw extruder screw extrusion moulding, and the processing temperature of twin screw extruder is 280 ℃, feeding frequency 5Hz, engine speed 200r/min.
Embodiment 2
A preparation method for the nylon composite materials of heat conduction, by following weight percent preparation raw material,
| Material name | Weight percent/% |
| Nylon 6 | 35 |
| Surface treated Graphite Powder 99 | 60 |
| Modified additive | 2.9 |
| Aluminum fiber | 2 |
| Rare earth element yttrium | 0.1 |
Wherein modified additive is comprised of the material of following weight percent: oxidation inhibitor B225, and content is 10% of modified additive weight; Photostabilizer 783, content is 0.1% of modified additive weight; Dispersion agent Honeywell A-C 6A, content is 9.9% of modified additive weight; Titanate coupling agent NDZ311, content is 80% of modified additive weight.
The surface treatment of Graphite Powder 99 is that 0.3 Aluminate of Graphite Powder 99 content and Graphite Powder 99 are stirred to 30min; Wherein the fineness of Graphite Powder 99 is 120 μ m.
Described preparation method comprises the following steps:
A) nylon 6 is ground, obtain 90 object nylon 6 powders, under nitrogen atmosphere, rare earth element yttrium is worn into the powder of 2-4mm;
B) nylon 6 powders that step a) obtained and rare earth element yttrium powder and surface treated Graphite Powder 99, modified additive are under nitrogen atmosphere, with stirring 10min in the stirrer of preparing burden at a high speed, then in preparing burden stirrer, high speed adds diameter 30 μ m, length 3mm aluminum fiber, continue to stir 3min, obtain mixture;
C) mixture step b) being made is through double-screw extruder screw extrusion moulding, and the processing temperature of twin screw extruder is 290 ℃, feeding frequency 10Hz, engine speed 300r/min.
Embodiment 3
A preparation method for the nylon composite materials of heat conduction, by following weight percent preparation raw material,
| Material name | Weight percent/% |
| Nylon 6 | 55 |
| Surface treated Graphite Powder 99 | 30 |
| Modified additive | 4.8 |
| Aluminum fiber | 10 |
| Rare earth element yttrium | 0.2 |
Wherein modified additive is comprised of the material of following weight percent: oxidation inhibitor B225, and content is 5% of modified additive weight; Photostabilizer 783, content is 5% of modified additive weight; Dispersion agent Honeywell A-C 6A, content is 45% of modified additive weight; Titanate coupling agent NDZ311, content is 45% of modified additive weight.
The surface treatment of Graphite Powder 99 is that 0.5 Aluminate of Graphite Powder 99 content and Graphite Powder 99 are stirred to 35min; Wherein the fineness of Graphite Powder 99 is 150 μ m.
Described preparation method comprises the following steps:
A) nylon 6 is ground, obtain 100 object nylon 6 powders, under nitrogen atmosphere, rare earth element yttrium is worn into the powder of 2-4mm;
B) nylon 6 powders that step a) obtained and rare earth element yttrium powder and surface treated Graphite Powder 99, modified additive are under nitrogen atmosphere, with stirring 20min in the stirrer of preparing burden at a high speed, then in preparing burden stirrer, high speed adds diameter 35 μ m, length 4mm aluminum fiber, continue to stir 3min, obtain mixture;
C) mixture step b) being made is through double-screw extruder screw extrusion moulding, and the processing temperature of twin screw extruder is 295 ℃, feeding frequency 20Hz, engine speed 500r/min.
Comparative example 1, raw materials used according to embodiment 1, remove aluminum fiber, with nylon 6, supplement not enough content, preparation method is identical with embodiment 1.
Comparative example 2, raw materials used according to embodiment 2, remove modified additive, with nylon 6, supplement not enough content, preparation method is identical with embodiment 2.
Comparative example 3, raw materials used according to embodiment 3, remove rare earth element yttrium and aluminum fiber, with nylon 6, supplement not enough content, preparation method is identical with embodiment 3.
Comparative example 4, raw materials used according to embodiment 1, remove surface treated graphite powder and aluminum fiber, with nylon 6, supplement not enough content, preparation method is identical with embodiment 1.
Table 1 is the test data of tensile strength, flexural strength, modulus in flexure and thermal conductivity
Table 1, test data
| Title | Tensile strength (MP) | Flexural strength (MP) | Modulus in flexure (MP) | Thermal conductivity (W/mk) |
| Embodiment 1 | 124 | 129 | 3303 | 7.5 |
| Embodiment 2 | 298 | 287 | 3984 | 7.9 |
| Embodiment 3 | 149 | 173 | 3523 | 8.3 |
| Comparative example 1 | 99 | 129 | 3004 | 3.4 |
| Comparative example 2 | 127 | 145 | 2934 | 4.1 |
| Comparative example 3 | 117 | 124 | 2967 | 1.5 |
| Comparative example 4 | 107 | 119 | 2974 | 2.4 |
As can be seen from the table, the thermal conductivity of comparative example 1-4 is on the low side, the nylon 6 composite material that every data all make than embodiment of the present invention 1-3 is low, modified additive, Graphite Powder 99, aluminum fiber and rare earth element yttrium have been added, thermal conductivity improves obviously, and the tensile strength of nylon 6 composite material, flexural strength, modulus in flexure improve.
Claims (5)
1. the nylon composite materials of a high heat conduction, it is characterized in that, described nylon composite materials is become by the mixed raw material of following weight percent: nylon 6 35-89%, surface treated Graphite Powder 99 10-60%, modified additive 0.6-5%, rare earth element yttrium 0.1-0.2% and aluminum fiber 0.2-10%; Described modified additive is comprised of the material of following weight percent: oxidation inhibitor 0.1-10%, photostabilizer 0.1-10%, dispersion agent 0.1-80% and coupling agent 0.1-80%; The surface-treated concrete steps of described surface treated Graphite Powder 99 are that the Aluminate of the 1/10-1/2 of Graphite Powder 99 content and Graphite Powder 99 are stirred to 25-35min; The fineness of Graphite Powder 99 is 100-150 μ m.
2. the nylon composite materials of a kind of high heat conduction according to claim 1, is characterized in that, the diameter of described aluminum fiber is 25-35 μ m, and length is 2-4mm.
3. according to the nylon composite materials of a kind of high heat conduction described in claim 1 or 2, it is characterized in that, the granularity of described nylon 6 is 80-100 order.
4. a preparation method for the nylon composite materials of high heat conduction as claimed in claim 1, is characterized in that, described preparation method comprises the following steps:
A) nylon 6 is ground, obtain 80-100 object nylon 6 powders, under nitrogen atmosphere, rare earth element yttrium is worn into the powder of 2-4mm;
B) nylon 6 powders that step a) obtained and rare earth element yttrium and surface treated Graphite Powder 99, modified additive are under nitrogen atmosphere, with the stirrer of preparing burden at a high speed, stir 5-20min, then in high speed is prepared burden stirrer, add aluminum fiber, continue to stir 2-3min, obtain mixture;
C) mixture step b) being made is through double-screw extruder screw extrusion moulding.
5. the preparation method of the nylon composite materials of a kind of high heat conduction according to claim 4, is characterized in that, in step c), the processing temperature of twin screw extruder is 280-295 ℃, feeding frequency 5-20Hz, engine speed 200-500r/min.
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| CN103819895B (en) * | 2014-03-11 | 2016-05-04 | 合肥工业大学 | A kind of epoxide group modified graphite and heat conduction nylon composite materials and preparation thereof |
| CN106633838A (en) * | 2016-12-09 | 2017-05-10 | 昆山纳诺新材料科技有限公司 | Low cost environmentally-friendly heat conduction plastic and preparation method thereof |
| CN114621581A (en) * | 2020-12-11 | 2022-06-14 | 湖南登科材料科技有限公司 | High-thermal-conductivity nylon and preparation method thereof |
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| FR2847902B1 (en) * | 2002-11-29 | 2007-02-16 | Rhodia Eng Plastics Srl | COMPOSITION BASED ON THERMOPLASTIC MATRIX |
| WO2005047181A2 (en) * | 2003-06-03 | 2005-05-26 | Seldon Technologies, Llc | Fused nanostructure material |
| CN102199283B (en) * | 2011-04-14 | 2012-09-12 | 杭州师范大学 | Nylon 6 resin, nylon 6 filament and preparation methods thereof |
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2012
- 2012-05-21 CN CN201210156510.9A patent/CN102775767B/en active Active
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