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High-strength antistatic heat-conductive PPA (Polyphthalamide) material and preparation method of same

An anti-static, high-strength technology, applied in the field of high-strength anti-static and thermally conductive PPA materials and its preparation, can solve the problems of poor electrical properties, thermal properties, and strength of PPA, and achieve low cost, simple process, and convenient operation.

Inactive Publication Date: 2013-10-16
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a high-strength anti-static and heat-conducting PPA material and its preparation method, aiming to solve the problems of poor electrical performance, thermal performance and strength of PPA in the prior art

Method used

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  • High-strength antistatic heat-conductive PPA (Polyphthalamide) material and preparation method of same
  • High-strength antistatic heat-conductive PPA (Polyphthalamide) material and preparation method of same

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preparation example Construction

[0035] see figure 1 , showing a method for preparing a high-strength antistatic heat-conducting PPA material according to an embodiment of the present invention, the method comprising the following steps:

[0036] S01: Select raw materials according to weight percentage, the raw materials include polyphthalamide PPA35-55%, carbon fiber 15-25%, graphite 5-10%, aluminum nitride 10-20%, flame retardant 10-15% , heat stabilizer 0.5-1.0%, nucleating agent 0.1-0.3%;

[0037] S02: Mix polyphthalamide, graphite, aluminum nitride, flame retardant, heat stabilizer and nucleating agent uniformly to obtain mixed raw materials;

[0038] S03: Put the above-mentioned mixed raw materials in a twin-screw extruder to blend with carbon fibers, melt extrude, and granulate to obtain the high-strength antistatic and heat-conducting PPA material.

[0039] In step S01, all materials are accurately weighed to an accuracy of 0.001 kg, put into corresponding material bags and marked.

[0040] Step S0...

Embodiment 1

[0045] The components and weight percentages of the high-strength antistatic heat-conducting PPA material of the present embodiment are:

[0046] Polyphthalamide 35%;

[0047] Carbon fiber 25%;

[0048] Graphite 9%;

[0049] Aluminum nitride 20%;

[0050] Flame retardant 10%;

[0051] Heat stabilizer 0.8%;

[0052] Nucleating agent 0.2%.

[0053]Wherein, the polyphthalamide resin is produced by Solvay Company, the semi-crystalline resin of trade name A-1000; the carbon fiber is produced by Japan Toray Company, and the trade name is T300-T6 chopped length Chopped fibers at 5 to 8mm; the colloidal graphite produced by Qingdao Baichuan Co., Ltd. with a brand name of TF-1; type aluminum nitride; the flame retardant is a hypophosphite halogen-free flame retardant with a brand name of OP1230 produced by Clariant; The synergistic mixture of phenolic antioxidant and phosphate; Described nucleating agent is the calcium salt of carboxylate based on the long carbon chain compositi...

Embodiment 2

[0056] The components and weight percentages of the high-strength antistatic heat-conducting PPA material of the present embodiment are:

[0057] Polyphthalamide 45%;

[0058] Carbon fiber 20%;

[0059] graphite 7%;

[0060] Aluminum nitride 15%;

[0061] Flame retardant 12%;

[0062] Heat stabilizer 0.8%;

[0063] Nucleating agent 0.2%.

[0064] Wherein, the polyphthalamide resin is produced by Solvay Company, the semi-crystalline resin of trade name A-1000; the carbon fiber is produced by Japan Toray Company, and the trade name is T300-T6 chopped length Chopped fibers at 5 to 8mm; the colloidal graphite produced by Qingdao Baichuan Co., Ltd. with a brand name of TF-1; type aluminum nitride; the flame retardant is a hypophosphite halogen-free flame retardant with a brand name of OP1230 produced by Clariant; The synergistic mixture of phenolic antioxidant and phosphate; Described nucleating agent is the calcium salt of carboxylate based on the long carbon chain composit...

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Abstract

The invention provides a high-strength antistatic heat-conductive PPA (Polyphthalamide) material containing the components in percent by weight as follows: 35-55% of PPA, 15-25% of carbon fiber, 5-10% of graphite, 10-20% of aluminium nitride, 10-15% of fire retardant, 0.5-1.0% of heat stabilizer and 0.1-0.3% of nucleating agent. The invention also provides a preparation method of the high-strength antistatic heat-conductive PPA material. The preparation method includes the steps as follows: selecting the materials in percent by weight as above; mixing the PPA, the graphite, the aluminium nitride, the fire retardant, the heat stabilizer and the nucleating agent to be uniform, thus obtaining a mixed raw material; placing the mixed material in a double-screw extruder and doping the mixed material with the carbon fiber; and then conducting melt extrusion and granulation to obtain the high-strength antistatic heat-conductive PPA material. The product made of the PPA material is high in mechanical strength, excellent in heat resistance and difficult to burn and has an antistatic effect; besides, the product made from the PPA material has a high heat-conducting effect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-strength antistatic and heat-conducting PPA material and a preparation method thereof. Background technique [0002] Driven by the rapid development of the electronic and electrical industry, the requirements for polymer materials are getting higher and higher. For example, some large servers, compared with ordinary computers, have long continuous working hours, high heat generation, and high requirements for work stability. Under such conditions, polymer materials used in server accessories not only require high strength, high heat resistance, and Excellent anti-static effect and heat dissipation effect are required. Another example is the notebook industry. Heat dissipation and dust resistance have become important performance indicators for a notebook. When polymer materials are used in notebook computers, more and more attention is paid to therma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L77/06C08K13/04C08K7/06C08K3/04C08K3/28C08K3/32C08K5/098B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/92514B29C2948/92561B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 徐东徐永周兵
Owner SHENZHEN KEJU NEW MATERIAL
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