Continuous long carbon fiber reinforced thermoplastic nanocomposite and preparation method and application thereof

A technology of nano-composite materials and reinforced thermoplastic, which is applied in the field of long carbon fiber thermoplastic resin-based composite materials, can solve the problems of not being able to meet the requirements of batch production, low cost, poor low-temperature impact resistance, and high manufacturing and processing costs, and achieves UV resistance. Aging, low temperature impact resistance, good dimensional stability

Active Publication Date: 2015-12-30
河南中煌节能电器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the composite automobile wheels made of continuous carbon fiber reinforced thermosetting epoxy resin composites (CFRP) generally have the following disadvantages or deficiencies: large proportion, easy to absorb moisture and deform, poor low-temperature impact resistance, high manufacturing and processing costs, and Many shortcomings or defects such as low pass rate cannot meet the requirements of mass production and low cost for special applications

Method used

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  • Continuous long carbon fiber reinforced thermoplastic nanocomposite and preparation method and application thereof
  • Continuous long carbon fiber reinforced thermoplastic nanocomposite and preparation method and application thereof
  • Continuous long carbon fiber reinforced thermoplastic nanocomposite and preparation method and application thereof

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preparation example Construction

[0020] The present invention provides a method for preparing continuous long carbon fiber reinforced thermoplastic resin-based nanocomposites (LCFRT), comprising the following steps: using precision sensors (viscosity, temperature and pressure) to control continuous carbon fiber bundles (CCF) and low-viscosity molten thermoplastic The resin blend is heated at temperature, pressurized pressure, and traction tension, and 11-15 rolling rollers with different chamfering angles are installed inside the extrusion and dipping groove mold to form a continuous long-distance carbon fiber (bundle) arrangement. Monofilament carbon fiber (CCF), and while maintaining the melting temperature and low-viscosity fluid, the effective isostatic pressure in the dipping tank is controlled at the same time: 85-250MPa, so that the continuous monofilament carbon fiber (CCF) can be completely impregnated with hot melt , Wetting and compacting forming composite (process), the interface strength between t...

Embodiment 1

[0028] Preparation of long carbon fiber reinforced PA66 nanocomposites (granules, LFT-PA66-LCF40): the proportion of the total weight of each component is: 40wt% PA66, 3wt% maleic anhydride grafted POE (compatibilizer), 2wt% conductive carbon black, 2wt% conductive graphite, 0.3wt% carbon nanotube, 0.2wt% polytetrafluoroethylene, 1.5wt% molybdenum disulfide, 1wt% micron aluminum fiber, 0.5wt% nano silicon carbide fiber, 0.5wt% Nano-graphene, 3wt% nano-aluminum nitride, 2wt% nano-molybdenum nitride, 1wt% nano-alumina, 0.5wt% nano-magnesia, 0.5wt% alkyl bis fatty acid amide, 1wt% anti-ultraviolet light agent 745, 1wt% The blend of antioxidant (0.5wt% 1010 and 0.5wt% 164), then on the high-speed mixer, uniformly mix and stir at low speed (35 rpm) and high speed (85 rpm), then you can get Multiphase multicomponent blend composites.

[0029] Using precisely controlled continuous carbon fiber filament yarn (CF, Japan Toray T700, 12K) to blend with the above-mentioned multi-componen...

Embodiment 2

[0037] Preparation of long carbon fiber reinforced PA66 nanocomposites (granules, LFT-PA66-LCF50): the proportion of the total weight of each component is: 28.5wt% PA66, 3wt% maleic anhydride grafted POE (compatibilizer), 2wt% conductive carbon black, 3wt% conductive graphite, 0.3wt% carbon nanotube, 0.3wt% polytetrafluoroethylene, 2wt% molybdenum disulfide, 1wt% micron aluminum fiber, 0.2wt% nano silicon carbide fiber, 0.5wt% nano Graphene, 3wt% nano-aluminum nitride, 2wt% nano-molybdenum nitride, 1wt% nano-alumina, 0.2wt% nano-magnesia, 1wt% alkyl bis fatty acid amide, 1wt% anti-ultraviolet agent 745, 1wt% antioxidant The blend of the agent (0.5wt% 1010 and 0.5wt% 164), first low speed (35 rev / min) and then high speed (125 rev / min), uniformly stirred and mixed in a high-speed mixer, then obtained multiphase poly Component blend compound.

[0038] Special impregnation under heat and pressure on the 45-type twin-screw extruder using precision-controlled continuous carbon fibe...

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Abstract

The invention discloses a continuous long carbon fiber reinforced thermoplastic nanocomposite and a preparation method and application thereof. The nanocomposite comprises, by weight, 40 to 70% of long carbon fiber (LCF), 25 to 40% of thermoplastic resin, 3 to 15% of a filler and 2 to 5% of an auxiliary agent; and an isostatic pressing fusion resin impregnation compound process is employed to prepare the multi-component blend composite with a multi-phase structural characteristic. In a processed and shaped part product, the reservation length of LCF is 0.5 to 15 mm and meets the requirement that normal distribution is no less than 80%. The nanocomposite provided by the invention has excellent performances and characteristics like small specific gravity, high strength, good toughness, good thermal and heat conductivity, wear resistance, corrosion resistance, fatigue resistance, simple production technology and low processing cost of the product.

Description

technical field [0001] The invention relates to a continuous long carbon fiber reinforced thermoplastic resin-based nanocomposite (LongCarbonFiberReinforcedThermoplasticComposites, LCFRT) and its preparation method and application, belonging to high performance, light weight, environmental protection, recyclable long carbon fiber thermoplastic resin based composite material . Background technique [0002] The mechanical properties of composite materials and metal materials are obviously different, which are mainly reflected in two aspects: 1) The mechanical properties of composite materials have obvious anisotropy and show strong designability, while metal materials are different from each other. Isotropic, the performance of the material remains unchanged after the composition of the material is determined; 2) The impact failure modes of composite materials and metal materials are different, and the impact failure modes of composite materials present complex and diverse cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L51/06C08L27/18C08K13/04C08K3/04C08K7/24C08K7/10C08K7/06C08K3/28C08K3/22C08J5/04
CPCC08J5/042C08L77/06C08L2205/03C08K2201/014C08K2201/011C08L51/06C08L27/18C08K13/04C08K3/04C08K7/24C08K7/10C08K7/06C08K2003/282C08K2003/2227C08K2003/222C08J2377/06C08J2451/06C08J2427/18
Inventor 方鲲方铮李玫
Owner 河南中煌节能电器有限公司
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