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A kind of preparation method of continuous fiber reinforced nylon composite material

A technology of nylon composite material and continuous fiber, which is applied in the field of materials, can solve the problems that do not involve long carbon chain nylon powder continuous impregnation fiber and its blended high-strength high-low temperature resistant nylon composite material, etc., so as to reduce fiber carding process, The effect of excellent low temperature resistance toughness and excellent aging resistance

Active Publication Date: 2020-11-06
长沙五犇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the published patents, glass fiber reinforced nylon and carbon fiber reinforced general-purpose nylon all adopt twin-screw blending extrusion process to prepare composite materials, such as glass fiber reinforced nylon patent: CN10541931315A; carbon fiber reinforced nylon patents: CN103289368B / CN103786277B / CN102558847B / CN201710150374.5, etc. Among the aramid fiber reinforced nylon patents, CN103627164A proposes a method for preparing high temperature resistant nylon composite materials through twin-screw blending and extrusion of aramid staple fiber and high temperature nylon resin; CN103788624A proposes that aramid staple fibers are added to high-temperature-resistant nylon salt to melt and polymerize to prepare high-temperature-resistant nylon composite materials; however, none of the above-mentioned patents involves the continuous impregnation of long carbon chain nylon powder and its blended fabric to prepare high-strength high-temperature resistant nylon composite material

Method used

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  • A kind of preparation method of continuous fiber reinforced nylon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Formula: Nylon 11 powder: 40kg; carbon fiber cloth A: 100kg, the weight is 200g / m 2 , the fabric structure is plain weave (Type A); the antioxidant (A) is N, N'-bis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl]hexamethylenediamine : 0.5kg; the anti-ultraviolet absorber is UV321: 0.6kg; the lubricant is erucamide: 0.5kg.

[0050] Step 1: Preparation of nylon powder: adopt the process of freezing and pulverizing to make powder. That is, after freezing the nylon resin (nylon 11) with liquid nitrogen at -40°C, it was ground into a powder of 80 μm by a mill.

[0051] Step 2: Nylon powder impregnated fiber cloth to prepare composite material:

[0052] 1. Add the antioxidant, ultraviolet light absorber, lubricant and the nylon powder obtained in step 1 into the mixer in proportion, at 200prm, stir for 5 minutes, then discharge, and put it into the storage tank of the powder metering feeder for later use.

[0053] 2. Load the carbon fiber cloth A into the unwinder, turn on t...

Embodiment 2

[0057] Formula: nylon 12 powder: 40kg; carbon fiber cloth: 100kg, the weight is 200g / m 2 ; The fabric structure is plain weave (Type A). Antioxidant (B) is tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propyl] pentaerythritol ester: 0.4kg; anti-ultraviolet light absorber is UV321: 0.6kg; lubricant is Erucamide: 0.5kg.

[0058] The whole preparation flow process and performance testing are the same as in Example 1.

Embodiment 3

[0060] : Formula: Nylon 12 powder: 40kg; glass fiber cloth: 100kg, the weight is 200g / m 2 , the fabric structure is type A, that is, plain weave; antioxidant (C) is β-(3,5-dibutyl-4-hydroxyphenyl) propylene n-octadecyl alcohol ester: 0.4kg; anti-ultraviolet light absorber For UV327: 0.6kg; for lubricant erucamide: 0.3kg.

[0061] The whole preparation flow process and performance testing are the same as in Example 1.

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Abstract

The invention relates to a preparation method of a continuous fiber reinforced nylon composite material. The method comprises the following steps: preparing nylon powder; mixing an antioxidant, an ultraviolet absorber and a lubricating agent with the nylon powder according to a proportion; drafting a fiber cloth roll with a guide roller, preheating the drafted fiber cloth roll, then enabling the fiber cloth roll to enter a powder measuring feeder, and continuously and evenly spreading the powder onto the fiber cloth according to a proportion by means of the powder measuring feeder; compactingthe fiber cloth by using the guide roller, enabling the compacted fiber cloth to enter a heating box, cooling and calendaring the fiber cloth, curing, cooling in the air, and winding to obtain the composite material. According to the preparation method, continuous carbon fibers, aramid fibers, glass fibers and composite woven fabric thereof are used as framework materials, and nylon resin is usedas a binder; the composite material prepared by continuously melting and impregnating the nylon resin powder and adopting a fiber coating process has the characteristics of being high in strength andmodulus, resistant to high and low temperature, and weatherproof.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a preparation method of a continuous fiber reinforced nylon composite material. Background technique [0002] Continuous fiber reinforced nylon has the advantages of high strength, high modulus and high temperature resistance. It can be used in structural components of automobiles, rail transit vehicles and construction machinery, replacing steel with plastic to realize lightweight vehicle equipment. Continuous glass fiber reinforced polypropylene composites have been industrialized; carbon fiber thermosetting composites have also been commercialized. However, the strength of glass fiber reinforced polypropylene composites is low, and the secondary molding of carbon fiber thermosetting composites is difficult and cannot be recycled. Continuous glass fiber reinforced general-purpose nylon composite material has high strength, but general-purpose nylon is easy to absorb water, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/04C08L77/02C08L77/06C08L77/10C08K7/06C08K7/14B29C70/50
CPCB29C70/506B29K2077/00B29K2105/0809C08J5/042C08J5/043C08J5/046C08J2377/02C08J2377/06
Inventor 陈如意邓凯桓
Owner 长沙五犇新材料科技有限公司
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