CN102775767A - 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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- CN102775767A CN102775767A CN2012101565109A CN201210156510A CN102775767A CN 102775767 A CN102775767 A CN 102775767A CN 2012101565109 A CN2012101565109 A CN 2012101565109A CN 201210156510 A CN201210156510 A CN 201210156510A CN 102775767 A CN102775767 A CN 102775767A
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000004677 Nylon Substances 0.000 title claims abstract description 32
- 229920001778 nylon Polymers 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 40
- 239000000654 additive Substances 0.000 claims abstract description 34
- 230000000996 additive effect Effects 0.000 claims abstract description 34
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 22
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 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 9
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- -1 aluminic acid ester 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
- 229920002302 Nylon 6,6 Polymers 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 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
- 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
- 239000012296 anti-solvent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 235000021438 curry Nutrition 0.000 description 1
- 230000002950 deficient 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
- 238000005457 optimization Methods 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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 research report of at present domestic heat-conductive composite material to different field is thermal conductive adhesive, heat conductive rubber, heat conduction Embedding Material; To the research of high thermal conductivity plastic material mainly is to be base material with PE, PP and epoxy resin, and less to the research and the patent of thermoplastic engineering plastic.Output occupies the first nylon of engineering plastics; Owing to have excellent mechanical property and electrical property preferably; Have advantages such as wear-resisting, oil resistant, anti-solvent, self-lubricating, corrosion-resistant and good processing properties again, be widely used in fields such as automobile, electronic apparatus, machinery, electric, weapons.Nylon 6 (polyamide 6, are called for short PA6) is a kind of engineering plastics of excellence, has good non-notch impact resistance.And its thermal conductivity is lower, is 0.30W/mk, and 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 nano composite materials; This application case discloses a kind of wear resistant nylon 66 nano composite materials, is made up of the antioxidant 1010 of the nylon 66 of 98-100, the nano-silicon nitride of 0.05-1,0.1-0.4 and the oxidation inhibitor 168 of 0.1-0.4 by weight following component.Its weak point is that the nylon composite materials heat conductivility that makes is poor.
Summary of the invention
One of the object of the invention is to provide for the defective that solves prior art nylon composite materials heat conductivility difference a kind of nylon composite materials of high heat conduction.
Another object of the present invention provides a kind of preparation method of nylon composite materials of high heat conduction.
To achieve these goals, the present invention adopts following technical scheme:
A kind of nylon composite materials of high heat conduction, said nylon composite materials is mixed and made into by following raw materials by 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 present technique scheme, the thermal conductivity of nylon 6 is merely 0.30 W/mk, and Graphite Powder 99 has the thermal conductivity height, is prone to the characteristic of dispersion and stable performance, in nylon 6 powders, adds Graphite Powder 99, helps improving the heat conductivility of matrix material; And but aluminum fiber is to compare characteristics such as having more fusing point is low, the low noise reduction of hardness, good heat conductivity, heavy metal free pollution with traditional steel fiber copper fiber; Aluminum ratio heavily is 30% of a copper; So the aluminium fiber, the heat conductivility of adding aluminum fiber lifting matrix material further.The modified additive that adds 0.6-5% can effectively improve the performance of nylon 6 composite material, if add too much, then 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 then 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; Then can so the present invention relatively reaches optimization through TE, confirm 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% because of yttrium unstable reduction that causes the nylon 6 composite material performance in air.
As preferably, said modified additive is made up 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 present technique scheme, oxidation inhibitor is selected oxidation inhibitor B225 for use, and it can keep original melting index by primary antioxidant 1010 and auxiliary antioxidant 168 composite forming, and low look dirty.Photostabilizer selects 783 for use; Dispersion agent is selected Honeywell A-C 6A for use, and coupling agent is titanate coupling agent NDZ311.
As preferably, the surface-treated concrete steps of said surface treated Graphite Powder 99 are that the aluminic acid ester of the 1/10-1/2 of Graphite Powder 99 content and Graphite Powder 99 are stirred 25-35min; The fineness of Graphite Powder 99 is 100-150 μ m.In the present technique scheme, Graphite Powder 99 through surface treatment, is improved fineness, brightness and reduces viscosity, increase the sticking power of Graphite Powder 99.
As preferably, the diameter of said aluminum fiber is 25-35 μ m, and length is 2-4mm.
As preferably, the granularity of said nylon 6 is the 80-100 order.
A kind of preparation method of nylon composite materials of high heat conduction, said preparation method may further comprise the steps:
A) nylon 6 is ground, obtain 80-100 purpose 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; Stir 5-20min with the stirrer of preparing burden at a high speed; In high speed is prepared burden stirrer, add aluminum fiber then, continue to stir 2-3min, obtain mixture;
C) mixture that step b) is made is through the twin screw extruder screw extrusion molding.
As preferably, in the step c), the processing temperature of twin screw extruder is 280-295 ℃, feeding frequency 5-20Hz, engine speed 200-500r/min.
As preferably, said nylon composite materials is mixed and made into by following raw materials by 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 that the thermal conductivity of the prepared nylon composite materials of the present invention significantly promotes, tensile strength, flexural strength also have lifting simultaneously.
Embodiment
Below in conjunction with specific embodiment the present invention is done further explanation:
Embodiment 1
A kind of preparation method of nylon composite materials of high 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 made up of the material of following weight percent: oxidation inhibitor B225, content are 0.1% of modified additive weight; Photostabilizer 783, content are 10% of modified additive weight; Dispersion agent Honeywell A-C 6A, content are 80% of modified additive weight; Titanate coupling agent NDZ311, content are 9.9% of modified additive weight.
The surface treatment of Graphite Powder 99 is that 0.1 aluminic acid ester of Graphite Powder 99 content and Graphite Powder 99 are stirred 25min; Wherein the fineness of Graphite Powder 99 is 100 μ m.
Wherein nylon 6 is contained Industrial Co., Ltd. available from the Taiwan collection, and model is PA T4208; Graphite Powder 99 is available from carbon materials ltd, and model is K-15; Oxidation inhibitor B225 is available from Nanjing Holley bright science, industry and trade ltd; Photostabilizer 783 is available from Milan, Nanjing chemical industry ltd; Dispersion agent reaches environmentally-friendly plastic chemical industry ltd available from Shenzhen curry favour, model Honeywell A-C 6A; Coupling agent is available from the sharp chemical industry ltd of speeding in Guangzhou, and model is titanate coupling agent NDZ311; Aluminum fiber causes adopted novel material Science and Technology Ltd. available from Shanghai.
Said preparation method may further comprise the steps:
A) nylon 6 is ground, obtain 80 purpose 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; The aluminum fiber that in high speed is prepared burden stirrer, adds diameter 25 μ m, length 2mm then; Continue to stir 2min, obtain mixture;
C) mixture that step b) is made is through the twin screw extruder screw extrusion molding, and the processing temperature of twin screw extruder is 280 ℃, feeding frequency 5Hz, engine speed 200r/min.
Embodiment 2
A kind of preparation method of nylon composite materials of high 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 made up of the material of following weight percent: oxidation inhibitor B225, content are 10% of modified additive weight; Photostabilizer 783, content are 0.1% of modified additive weight; Dispersion agent Honeywell A-C 6A, content are 9.9% of modified additive weight; Titanate coupling agent NDZ311, content are 80% of modified additive weight.
The surface treatment of Graphite Powder 99 is that 0.3 aluminic acid ester of Graphite Powder 99 content and Graphite Powder 99 are stirred 30min; Wherein the fineness of Graphite Powder 99 is 120 μ m.
Said preparation method may further comprise the steps:
A) nylon 6 is ground, obtain 90 purpose 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;, high speed adds diameter 30 μ m, length 3mm aluminum fiber then in preparing burden stirrer; Continue to stir 3min, obtain mixture;
C) mixture that step b) is made is through the twin screw extruder screw extrusion molding, and the processing temperature of twin screw extruder is 290 ℃, feeding frequency 10Hz, engine speed 300r/min.
Embodiment 3
A kind of preparation method of nylon composite materials of high 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 made up of the material of following weight percent: oxidation inhibitor B225, content are 5% of modified additive weight; Photostabilizer 783, content are 5% of modified additive weight; Dispersion agent Honeywell A-C 6A, content are 45% of modified additive weight; Titanate coupling agent NDZ311, content are 45% of modified additive weight.
The surface treatment of Graphite Powder 99 is that 0.5 aluminic acid ester of Graphite Powder 99 content and Graphite Powder 99 are stirred 35min; Wherein the fineness of Graphite Powder 99 is 150 μ m.
Said preparation method may further comprise the steps:
A) nylon 6 is ground, obtain 100 purpose 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;, high speed adds diameter 35 μ m, length 4mm aluminum fiber then in preparing burden stirrer; Continue to stir 3min, obtain mixture;
C) mixture that step b) is made is through the twin screw extruder screw extrusion molding, and the processing temperature of twin screw extruder is 295 ℃, feeding frequency 20Hz, engine speed 500r/min.
Comparative Examples 1, raw materials used according to embodiment 1, remove aluminum fiber, replenish insufficient content with nylon 6, the preparation method is identical with embodiment 1.
Comparative Examples 2, raw materials used according to embodiment 2, remove modified additive, replenish insufficient content with nylon 6, the preparation method is identical with embodiment 2.
Comparative Examples 3, raw materials used according to embodiment 3, remove rare earth element yttrium and aluminum fiber, replenish insufficient content with nylon 6, the preparation method is identical with embodiment 3.
Comparative Examples 4, raw materials used according to embodiment 1, remove surface treated graphite powder and aluminum fiber, replenish insufficient content with nylon 6, the 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 Examples 1 | 99 | 129 | 3004 | 3.4 |
| Comparative Examples 2 | 127 | 145 | 2934 | 4.1 |
| Comparative Examples 3 | 117 | 124 | 2967 | 1.5 |
| Comparative Examples 4 | 107 | 119 | 2974 | 2.4 |
From table, can find out; The thermal conductivity of Comparative Examples 1-4 is on the low side; Each association is all low than the nylon 6 composite material that embodiment of the invention 1-3 makes; Added modified additive, Graphite Powder 99, aluminum fiber and rare earth element yttrium, thermal conductivity improves obviously, and the tensile strength of nylon 6 composite material, flexural strength, modulus in flexure improve.
Claims (8)
1. the nylon composite materials of a high heat conduction; It is characterized in that said nylon composite materials is mixed and made into by following raw materials by 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%.
2. the nylon composite materials of a kind of high heat conduction according to claim 1 is characterized in that, said modified additive is made up 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%.
3. the nylon composite materials of a kind of high heat conduction according to claim 1 and 2 is characterized in that, the surface-treated concrete steps of said surface treated Graphite Powder 99 are that the aluminic acid ester of the 1/10-1/2 of Graphite Powder 99 content and Graphite Powder 99 are stirred 25-35min; The fineness of Graphite Powder 99 is 100-150 μ m.
4. the nylon composite materials of a kind of high heat conduction according to claim 1 is characterized in that, the diameter of said aluminum fiber is 25-35 μ m, and length is 2-4mm.
5. according to the nylon composite materials of claim 1 or 2 or 4 said a kind of high heat conduction, it is characterized in that the granularity of said nylon 6 is the 80-100 order.
6. the preparation method of the nylon composite materials of a high heat conduction as claimed in claim 1 is characterized in that, said preparation method may further comprise the steps:
A) nylon 6 is ground, obtain 80-100 purpose 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; Stir 5-20min with the stirrer of preparing burden at a high speed; In high speed is prepared burden stirrer, add aluminum fiber then, continue to stir 2-3min, obtain mixture;
C) mixture that step b) is made is through the twin screw extruder screw extrusion molding.
7. the preparation method of the nylon composite materials of a kind of high heat conduction according to claim 6 is characterized in that, in the step c), the processing temperature of twin screw extruder is 280-295 ℃, feeding frequency 5-20Hz, engine speed 200-500r/min.
8. the nylon composite materials of a kind of high heat conduction according to claim 6; It is characterized in that said nylon composite materials is mixed and made into by following raw materials by 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%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059565A (en) * | 2013-01-25 | 2013-04-24 | 本松工程塑料（杭州）有限公司 | Heat-conducting nylon composite material, preparation method and application thereof |
| CN103819895A (en) * | 2014-03-11 | 2014-05-28 | 合肥工业大学 | Epoxy group modified graphite, heat-conduction nylon composite and preparation of modified graphite and composite |
| 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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| US20100282668A1 (en) * | 2003-06-03 | 2010-11-11 | Seldon Technologies, LLC. | Fused nanostructure material |
| CN102199283A (en) * | 2011-04-14 | 2011-09-28 | 杭州师范大学 | Nylon 6 resin, nylon 6 filament and preparation methods thereof |
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| CN1729252A (en) * | 2002-11-29 | 2006-02-01 | 罗狄亚工程塑料有限责任公司 | Electrically-conductive composition based on a polyamide matrix |
| US20100282668A1 (en) * | 2003-06-03 | 2010-11-11 | Seldon Technologies, LLC. | Fused nanostructure material |
| CN102199283A (en) * | 2011-04-14 | 2011-09-28 | 杭州师范大学 | Nylon 6 resin, nylon 6 filament and preparation methods thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059565A (en) * | 2013-01-25 | 2013-04-24 | 本松工程塑料（杭州）有限公司 | Heat-conducting nylon composite material, preparation method and application thereof |
| CN103819895A (en) * | 2014-03-11 | 2014-05-28 | 合肥工业大学 | Epoxy group modified graphite, heat-conduction nylon composite and preparation of modified graphite and composite |
| 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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| CN102775767B (en) | 2014-01-29 |
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