Continuous carbon fiber-reinforced PA6 composite with high strength, high modulus, electrical conductivity and thermal conductivity, and preparation method thereof

A high-strength, high-modulus, electrical and thermal conduction technology, applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of affecting the mechanical properties of products, damaging the mechanical properties, and poor impregnation effect of carbon fibers, etc., to achieve excellent anti-aging properties, mechanical properties, etc. Improvement of performance and effect of improving mechanical properties

Inactive Publication Date: 2017-07-11
浙江胜钢新材料有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Due to the strong hydrogen bond, PA6 molecular viscosity is high, and the existing PA6 material has poor impregnation effect on carbon fiber, which directly affects the mechanical properties of the product; it is modified by adding small molecule additives such as lubricants or flow promoters. , although it improves the flow properties of PA6 and improves its impregnation effect with carbon fibers, but at the same time damages their mechanical properties

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  • Continuous carbon fiber-reinforced PA6 composite with high strength, high modulus, electrical conductivity and thermal conductivity, and preparation method thereof

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specific Embodiment 1

[0034] A continuous carbon fiber-reinforced PA6 high-strength, high-modulus, conductive and thermally conductive composite material, characterized in that: by weight of the material, the formula includes: PA6 resin 100 kg, polymeric hindered amine light stabilizer HS-944 0.1 kg, high-efficiency organic copper Stabilizer H3377 0.2kg, hyperbranched resin Hyper C100 0.2kg, Akema AX8900 2kg, ethylene-octene copolymer grafted maleic anhydride POE-g-MAH 1kg.

[0035] A preparation method of continuous carbon fiber reinforced PA6 high-strength, high-modulus, conductive and thermally conductive composite material: After premixing the above components according to a certain proportion, they are melted and mixed by a single-screw unit and extruded into a "hanger" type die for shunting, and finally enter The "S" type die head fully impregnates the activated carbon fiber, and the strands are cooled and granulated by cooling water to produce long carbon fiber reinforced thermoplastic PA6 pa...

specific Embodiment 2

[0038]A continuous carbon fiber-reinforced PA6 high-strength, high-modulus, conductive and thermally conductive composite material, characterized in that: by weight of the material, the formula includes: 100 kg of PA6 resin, 1 kg of high-efficiency organic copper stabilizer H3336, and 0.8 kg of hyperbranched resin CYD-701 , ethylene octene copolymer POE 5kg, ethylene-octene copolymer grafted glycidyl methacrylate POE-g-GMA 3kg.

[0039] A preparation method of continuous carbon fiber reinforced PA6 high-strength, high-modulus, conductive and thermally conductive composite material: After premixing the above components according to a certain proportion, they are melted and mixed by a single-screw unit and extruded into a "hanger" type die for shunting, and finally enter The "S" type die head fully impregnates the activated carbon fiber, and the strands are cooled and granulated by cooling water to produce long carbon fiber reinforced thermoplastic particles LFRT, and the carbon ...

specific Embodiment 3

[0042] A continuous carbon fiber-reinforced PA6 high-strength, high-modulus, conductive and thermally conductive composite material is characterized in that: by weight of the material, the formula includes: 100 kg of PA6 resin, 0.6 kg of high-efficiency organic copper stabilizer H3336, and 1.2 kg of hyperbranched resin CYD-701 kg, DuPont FUSN493D 10kg, ethylene-octene copolymer grafted maleic anhydride POE-g-MAH 5kg.

[0043] A preparation method of continuous carbon fiber reinforced PA6 high-strength, high-modulus, conductive and heat-conducting composite material: After premixing the above components according to a certain proportion, they are melted and mixed by a twin-screw unit and extruded into a "hanger" type die for shunting, and finally enter The "S" type die head fully impregnates the carbon fiber, and the strands are cooled and granulated by cooling water to produce long carbon fiber reinforced PA6 thermoplastic particle LFRT, and the carbon fiber content is controll...

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Abstract

The invention relates to a continuous carbon fiber-reinforced PA6 composite with high strength, high modulus, electrical conductivity and thermal conductivity, and a preparation method thereof. The composite comprises, by weight, (1) 100 parts of PA6 resin, (2) 0.2 to 1 part of an anti-oxidant, (3) 0.2 to 1.2 parts of a flow promoter, (4) 2 to 10 parts of a flexibilizer and (5) 1 to 5 parts of a compatilizer. The preparation method comprises the following steps: premixing the above components according to a certain ratio, carrying out melting and mixing via a double/single-screw set and then extruding the obtained mixture into a die head for flow splitting and impregnation so as to prepare the continuous carbon fiber-reinforced PA6 composite with high strength, high modulus, electrical conductivity and thermal conductivity. Compared with conventional staple carbon fiber-reinforced PA6 composites, the continuous carbon fiber-reinforced PA6 composite prepared by using a special impregnation process in the invention has greatly improved mechanical properties since the length retention rate of carbon fibers in a PA6 carrier is high or continuous and has substantially improved electrical conductivity and thermal conductivity due to a continuous network structure, so the application range of the composite is greatly broadened.

Description

technical field [0001] The invention relates to a continuous carbon fiber reinforced PA6 high-strength, high-modulus, conductive and heat-conducting composite material and a preparation method thereof. Background technique [0002] With the improvement of living standards and the enhancement of awareness of energy saving, emission reduction, environmental protection and sustainable development, new materials have been put forward in many fields such as automobiles, home appliances, and electronic appliances. High performance, lightweight and multifunctional requirements, In addition, the development of circular economy is also the development trend of new materials. PA6, also known as polyamide 6 or nylon 6 in Chinese, is a semi-crystalline thermoplastic resin prepared by caprolactam through ring-opening polymerization. It has the most superior comprehensive properties, such as mechanical strength, rigidity, toughness, and mechanical shock absorption. And wear resistance, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L51/06C08L101/00C08L23/08C08K7/06C09K5/14
CPCC08L77/02C08K2201/001C08L2201/04C08L2205/035C09K5/14C08L51/06C08L101/00C08K7/06C08L23/0815
Inventor 张思灯阮晨琪阮金刚
Owner 浙江胜钢新材料有限公司
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