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Lightweight high-strength continuous fiber reinforced polypropylene material and preparation method thereof

A polypropylene material and continuous fiber technology, which is applied in the field of lightweight and high-strength continuous fiber reinforced polypropylene material and its preparation, can solve the problems of inability to make thickness and reduce the overall strength, and achieve the improvement of sound insulation and heat insulation performance, weight reduction, Achieve lightweight effect

Active Publication Date: 2022-03-18
中广核俊尔(浙江)新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the core material of foamed polypropylene pure resin is introduced, the overall strength is reduced. In addition, this structure cannot be used for thinner boards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A foaming continuous fiber reinforced polypropylene material, the specific formula is as follows:

[0032] Basel HA5029 95.3%

[0033] Polyram1001 4%

[0034] TMA-3 0.3%

[0035] 1010 0.2%

[0036] 168 0.2%

[0037] Pour barium azodicarboxylate into PP emulsion and mix to form a suspension liquid with a concentration of 5%, and the continuous Taishan glass fiber cloth (100g / m 2 ) after soaking, coat the upper and lower surfaces with a film thickness of 0.15mm, and the heating temperature of the Teflon belt compound machine is 190°C, and the speed is 2m / min. After cooling, it was molded at 245° C. to obtain a foamed plate with a thickness of 0.25 mm.

Embodiment 2

[0039] A foaming continuous fiber reinforced polypropylene material, the specific formula is as follows:

[0040] Borealis HJ311MO 93.3%

[0041] Polyram1001 6%

[0042] TMB-5 0.3%

[0043] 1010 0.2%

[0044] 168 0.2%

[0045] Pour trihydrazine triazine into PP emulsion and mix to form a suspension liquid with a concentration of 3%. Hengshen carbon fiber cloth (100 g / m 2 ) after soaking, coat the upper and lower surfaces with a film thickness of 0.15mm, and the heating temperature of the Teflon belt compound machine is 190°C, and the speed is 2m / min. After cooling, it was molded at 240° C. to obtain a foamed board with a thickness of 0.25 mm.

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PUM

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Abstract

The invention provides a foamed continuous fiber reinforced polypropylene material and a preparation method thereof. The formula comprises the following components: 20-60% of polypropylene, 30-70% of continuous fiber cloth, 1-5% of compatilizer, 1-5% of high-temperature foaming agent, 0.1-0.5% of nucleating agent and 0.2-1% of nucleating agent, the continuous glass fiber cloth is infiltrated by high-fluidity polypropylene to realize high mechanical strength, and the high-temperature foaming agent adhered to the surface of the fiber forms foam holes under the condition of specific temperature and pressure to reduce the density of the material, so that the material has high mechanical strength. And therefore, the application requirements of light-weight structural parts are met.

Description

technical field [0001] The invention belongs to the field of thermoplastic composite materials, in particular to a micro-foamed lightweight high-strength continuous fiber reinforced polypropylene material and a preparation method thereof. Background technique [0002] According to the length of fiber retention, thermoplastic composites are divided into short fiber reinforced, long fiber reinforced (LFRT) and continuous fiber reinforced composites (CFRT). Studies have shown that when fiber reinforced materials are subjected to external loads, the greater the fiber length, the higher the strength, and the fibers whose length is less than the critical length Lo will be pulled out, the strength of the fiber itself cannot be fully exerted, and the strength of the material will be very low . [0003] Lightweight fiber reinforced materials have always been the goal pursued by the market. CN111073148A discloses a low dielectric constant micro-foamed glass fiber reinforced polypropy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K5/134C08K5/526C08K7/14C08K7/06C08K9/04C08J9/10C08J9/00
CPCC08J9/103C08J9/104C08J9/0061C08J9/0095C08J2323/12C08J2451/06C08J2203/04C08K5/1345C08K5/526C08K7/14C08K7/06C08K9/04
Inventor 宋玉兴金学斌黄瑞杰张磊陈光剑王建益
Owner 中广核俊尔(浙江)新材料有限公司
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