CN110760182A - Heat-conducting nylon composite material and preparation method thereof - Google Patents
Heat-conducting nylon composite material and preparation method thereof Download PDFInfo
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- CN110760182A CN110760182A CN201810846962.7A CN201810846962A CN110760182A CN 110760182 A CN110760182 A CN 110760182A CN 201810846962 A CN201810846962 A CN 201810846962A CN 110760182 A CN110760182 A CN 110760182A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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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
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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
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a heat-conducting nylon composite material and a preparation method thereof, belonging to the field of production of heat-conducting nylon composite materials, and the heat-conducting nylon composite material is prepared by mixing and extruding 78-93 parts of nylon, 5-20 parts of heat-conducting material, 0.1-0.3 part of antioxidant and 0.1-0.5 part of lubricant. The heat conduction material is prepared from graphene nanoplatelets and nano silicon carbide according to a mass ratio of 2: 1-4: 1 is prepared by compounding. According to the invention, the high thermal conductivity of the graphene microchip and the nano silicon carbide is utilized, so that the thermal conductivity and specific heat capacity of the composite material are improved, and finally the heat-conducting nylon product with excellent comprehensive performance is obtained.
Description
Technical Field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a heat-conducting nylon composite material and a preparation method thereof.
Technical Field
Aiming at the current product markets of lighting and new energy charging piles, in order to meet the market requirements, higher requirements are put forward in various aspects of strength, rigidity, impact resistance, heat conductivity and the like of engineering plastic products.
The graphene is provided with SP2The two-dimensional carbon atom crystal of the hybrid orbit, which is the thinnest material in the world today-single atom thick material. The graphene has excellent performances in the aspects of electricity, mechanics, heat, magnetism and the like. The multilayer graphene structure with more than 10 layers is called as a graphene microchip, the thickness of the graphene microchip is within the range of 5-100 nm, the graphene microchip has an ultra-large shape ratio, and the basic electric conduction and heat conduction properties and excellent lubricating, high temperature resistant and corrosion resistant properties of graphite are reserved.
Compared with common graphite, the graphene nanoplatelets have nanometer thickness, are easy to be uniformly compounded with other materials such as polymer materials and form a good compound interface, so that the characteristics of the graphene are brought into the composite material to obtain the high-performance composite material.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a heat-conducting nylon composite material suitable for industrial batch production and a preparation method thereof.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a heat-conducting nylon composite material is prepared from the following components in parts by weight: 78-93 parts of nylon, 5-20 parts of heat conduction material, 0.1-0.3 part of antioxidant and 0.1-0.5 part of lubricant; the heat conduction material is prepared from graphene nanoplatelets and nano silicon carbide according to a mass ratio of 2: 1-4: 1 is prepared by compounding.
Further, the nylon is nylon 6, nylon 66 or nylon 1010.
The heat conduction material is prepared by mixing graphene nanoplatelets and nano silicon carbide according to a mass ratio of 2: 1-4: 1, pouring the mixture into excessive coupling agent, stirring and mixing uniformly, and drying to obtain the heat conduction material.
The antioxidant is one or a mixture of more than two of antioxidant 1010, antioxidant 1098 and antioxidant 168.
The lubricant is at least one of A-C540A, EBS and Like wax E, PETS.
The invention also aims to provide a preparation method of the heat-conducting nylon composite material, wherein the nylon, the heat-conducting material, the antioxidant and the lubricant are added into a high-speed mixer together according to the parts by weight and are uniformly mixed; adding the mixture into an extruder, and finally, performing melt extrusion through the extruder and granulating to obtain the composite material; the temperature of the extruder from the feed opening to the die opening is respectively 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃ and 295 ℃, the rotating speed of the extruder is 180-400 rpm, and the vacuum degree is-0.07-0.03 MPa.
According to the invention, the thermal conductivity of the composite material is improved by utilizing the high thermal conductivity of the graphene nanoplatelets and the nano silicon carbide. The graphene nanoplatelets maintain the original planar carbon six-membered ring conjugated crystal structure of graphite, and have excellent mechanical strength, electric conduction and heat conduction properties, and good lubricating, high temperature resistant and corrosion resistant properties; the nano silicon carbide is a high heat conducting agent, has high heat conductivity coefficient, and is uniformly connected to the surface of the graphene microchip after being treated by the coupling agent, so that the agglomeration phenomenon of the nano material is reduced to a certain extent. Therefore, the blended and modified nano heat conduction material can be more efficiently dispersed in a polymer matrix to form a heat conduction network chain in a composite material system, and the heat conduction performance of the composite material is effectively improved.
Detailed Description
The following examples are given to illustrate the present invention and it should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the modification and modification of the present invention by those of ordinary skill in the art are not essential to the present invention.
The invention discloses a heat-conducting nylon composite material, which relates to the following material types:
the nylon used is PA-M1013B, PA-Alphalon 27, PA66-EPR 24;
the used heat conduction material is prepared by mixing graphene nanoplatelets and nano silicon carbide according to the mass ratio of 2: 1-4: 1, pouring the mixture into excessive coupling agent, stirring and mixing the mixture evenly, and drying the mixture to obtain the coupling agent;
the antioxidant is 1098, antioxidant 1010 and antioxidant 168;
the lubricant is A-C540A, EBS, Like wax E, PETS.
The present invention will be further described with reference to the following examples.
Example 1
Respectively weighing 93 parts of dried PA-M1013B, 5 parts of heat conduction material (graphene microchip: nano silicon carbide mass ratio is 2: 1), 0.1 part of antioxidant 1098, 0.1 part of antioxidant 168 and 0.2 part of lubricant EBS according to the weight ratio, mixing, adding into an extruder, extruding by the extruder, and granulating after water cooling. Wherein the processing temperature of the extruder is 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃, 295 ℃, the rotating speed of a main engine is 180rpm, and the vacuum degree is-0.03 MPa from a feed opening to a die opening in sequence.
Example 2
Respectively weighing 78 parts of dry PA-M1013B parts, 20 parts of heat conduction material (graphene microchip: nano silicon carbide mass ratio is 4: 1), 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168 and 0.5 part of lubricant Like wax E according to the weight ratio, mixing, adding into an extruder, extruding by the extruder, and granulating after water cooling. Wherein the processing temperature of the extruder is 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃, 295 ℃, the rotating speed of a main engine is 200rpm, and the vacuum degree is-0.05 MPa from a feed opening to a die opening in sequence.
Example 3
Weighing 85 parts of dried PA-Alphalon 27, 13 parts of heat conduction material (graphene microchip: nano silicon carbide mass ratio is 3: 1), 0.1 part of antioxidant 1098, 0.2 part of antioxidant 168 and 0.3 part of lubricant A-C540A according to the weight ratio, mixing, adding into an extruder, extruding by the extruder, and granulating after water cooling. Wherein the processing temperature of the extruder is 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃, 295 ℃, the rotating speed of a main engine is 350rpm and the vacuum degree is-0.05 MPa from a feed opening to a die opening in sequence.
Example 4
Respectively weighing 78 parts of dried PA66-EPR24, 20 parts of heat conduction material (graphene microchip: nano silicon carbide mass ratio is 4: 1), 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168 and 0.3 part of lubricant A-C540A according to the weight ratio, mixing, adding into an extruder, extruding by the extruder, and pelletizing after water cooling. Wherein the processing temperature of the extruder is 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃, 295 ℃, the rotating speed of a main engine is 400rpm and the vacuum degree is-0.06 MPa from the feed opening to the die opening in sequence.
Comparative example
Respectively weighing 98 parts by weight of dried PA66-EPR24, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168 and 0.3 part of lubricant A-C540A, mixing, adding into an extruder, extruding by the extruder, cooling with water, and granulating. Wherein the processing temperature of the extruder is 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃, 295 ℃, the rotating speed of a main engine is 400rpm and the vacuum degree is-0.06 MPa from the feed opening to the die opening in sequence.
The test data for the composites prepared are shown in the following table:
| examples | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example |
| Thermal conductivity (w/m.k) | 1.5 | 2.8 | 2.3 | 2.7 | 0.6 |
| Specific heat capacity (J/g. K) | 3.2 | 4.6 | 4.3 | 4.7 | 1.5 |
Wherein the thermal conductivity is measured in accordance with ASTM-D5470.
From the data, the thermal conductivity and specific heat capacity of the product are obviously improved after different base materials are used and the heat conduction material is added, so that the invention can meet the requirements of different properties according to the requirements of customers. Different heat conduction requirements of customers can be met, and the heat conduction material is applied to more heat conduction materials.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A heat conduction nylon composite material is characterized in that: the material is prepared from the following components in parts by weight: 78-93 parts of nylon, 5-20 parts of heat conduction material, 0.1-0.3 part of antioxidant and 0.1-0.5 part of lubricant; the heat conduction material is prepared from graphene nanoplatelets and nano silicon carbide according to a mass ratio of 2: 1-4: 1 is prepared by compounding.
2. The thermally conductive nylon composite of claim 1, wherein: the nylon is nylon 6, nylon 66 or nylon 1010.
3. The thermally conductive nylon composite of claim 1, wherein: the heat conduction material is prepared by mixing graphene nanoplatelets and nano silicon carbide according to a mass ratio of 2: 1-4: 1, pouring the mixture into excessive coupling agent, stirring and mixing uniformly, and drying to obtain the heat conduction material.
4. The thermally conductive nylon-nylon composite of claim 1, wherein: the antioxidant is one or a mixture of more than two of antioxidant 1010, antioxidant 1098 and antioxidant 168.
5. The thermally conductive nylon-nylon composite of claim 1, wherein: the lubricant is at least one of A-C540A, EBS and Like wax E, PETS.
6. A method of preparing the thermally conductive nylon composite of any of claims 1-5, wherein: adding nylon, a heat conduction material, an antioxidant and a lubricant into a high-speed mixer together according to the parts by weight, and uniformly mixing; adding the mixture into an extruder, and finally, performing melt extrusion through the extruder and granulating to obtain the composite material; the temperature of the extruder from the feed opening to the die opening is respectively 220 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃ and 295 ℃, the rotating speed of the extruder is 180-400 rpm, and the vacuum degree is-0.07-0.03 MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810846962.7A CN110760182A (en) | 2018-07-27 | 2018-07-27 | Heat-conducting nylon composite material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810846962.7A CN110760182A (en) | 2018-07-27 | 2018-07-27 | Heat-conducting nylon composite material and preparation method thereof |
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| CN110760182A true CN110760182A (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409782A (en) * | 2020-10-26 | 2021-02-26 | 江门市恒晖新材料科技有限公司 | Wear-resistant antibacterial conductive nylon and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757640A (en) * | 2012-07-25 | 2012-10-31 | 东莞市意普万尼龙科技股份有限公司 | Heat conduction nylon composite material and preparation method thereof |
| CN103589148A (en) * | 2013-11-21 | 2014-02-19 | 常州回天新材料有限公司 | Preparation method of heat-conducting and insulation solar cell back plate |
| CN103756309A (en) * | 2013-12-27 | 2014-04-30 | 安徽科聚新材料有限公司 | Heat-conducting nylon 66 composite material made of nylon66 and preparation method thereof |
-
2018
- 2018-07-27 CN CN201810846962.7A patent/CN110760182A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757640A (en) * | 2012-07-25 | 2012-10-31 | 东莞市意普万尼龙科技股份有限公司 | Heat conduction nylon composite material and preparation method thereof |
| CN103589148A (en) * | 2013-11-21 | 2014-02-19 | 常州回天新材料有限公司 | Preparation method of heat-conducting and insulation solar cell back plate |
| CN103756309A (en) * | 2013-12-27 | 2014-04-30 | 安徽科聚新材料有限公司 | Heat-conducting nylon 66 composite material made of nylon66 and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112409782A (en) * | 2020-10-26 | 2021-02-26 | 江门市恒晖新材料科技有限公司 | Wear-resistant antibacterial conductive nylon and preparation method thereof |
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