Fiber-reinforced thermoplastic composite and preparation method thereof

A fiber-reinforced, composite material technology, applied in the field of new material production and composite material production, can solve the problem that composite materials are difficult to meet requirements, and achieve the effect of improving mechanical properties

Active Publication Date: 2013-12-25
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composite materials obtained by the existing preparation methods of fiber-reinforced thermoplastic composite materials are generally difficult to meet the requirements.

Method used

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  • Fiber-reinforced thermoplastic composite and preparation method thereof
  • Fiber-reinforced thermoplastic composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1, after immersing 45wt% glass fiber in the modified surface treatment agent for 1min, place the impregnated glass fiber at room temperature and ventilated conditions for 60min to volatilize ethanol, and then weave the surface-treated glass fiber into Two-dimensional or three-dimensional fabric; the modified surface treatment agent is 0.5wt% polypropylene resin powder (particle size 0.1nm ~ 1μm) and 99.5wt% vinyltriethoxysilane ethanol solution; vinyltriethyl The content of vinyltriethoxysilane in the oxysilane ethanol solution is 0.5wt%;

[0035] Step 2: Extrude 55wt% polypropylene resin from an extruder heated to 180°C and laminate it with glass fiber fabric that has been preheated to 180°C, and enter the pressure roller equipment to pressurize the polypropylene resin in a heated and molten state Fully soak the fiberglass fabric;

[0036] Step 3, cooling the infiltrated glass fiber fabric and cutting it to a fixed length to obtain a glass fiber reinforced polypr...

Embodiment 2

[0039] Step 1, after immersing 50wt% of the glass fiber in the modified surface treatment agent for 1.5min, place the impregnated glass fiber at room temperature and ventilated conditions for 120min to volatilize the ethanol, and weave it into a two-dimensional or three-dimensional fabric through a weaving equipment; The modified surface treatment agent is 3.5wt% nylon 6 resin powder (particle size 100nm ~ 1μm) and 96.5wt% vinyltriethoxysilane ethanol solution; vinyl triethoxysilane ethanol solution The content of triethoxysilane is 3wt%;

[0040]Step 2: Extrude 50wt% Nylon 6 resin from an extruder heated to 240°C and laminate it with glass fiber fabric preheated to 240°C, and enter the pressurized equipment to make the heated and molten nylon 6 resin soak into the glass fiber fabric ;

[0041] Step 3, cooling the infiltrated glass fiber fabric and cutting it to a fixed length to obtain a glass fiber reinforced nylon 6 resin sheet.

Embodiment 3

[0043] Step 1, after immersing 55wt% glass fibers in the modified surface treatment agent for 2 minutes, place the soaked glass fibers at room temperature and ventilated conditions for 90 minutes to volatilize ethanol, and weave them into two-dimensional or three-dimensional fabrics through weaving equipment; The modified surface treatment agent is 6.5wt% polyphenylene sulfide resin powder (particle size 10nm ~ 1μm) and 93.5wt% vinyltriethoxysilane ethanol solution; vinyl triethoxysilane ethanol solution The content of triethoxysilane is 5wt%;

[0044] Step 2: Extrude 45wt% polyphenylene sulfide resin from an extruder heated to 300°C and laminate it with glass fiber fabric preheated to 300°C, and enter the pressurized equipment to heat and melt the polyphenylene sulfide resin Impregnated fiberglass fabric;

[0045] Step 3, cooling the impregnated glass fiber fabric and cutting it to a fixed length to obtain a glass fiber reinforced polyphenylene sulfide resin sheet.

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Abstract

The invention discloses a fiber-reinforced thermoplastic composite and a preparation method of the fiber-reinforced thermoplastic composite. The preparation method comprises the following steps that firstly, fibers are treated through a modified surface treating agent; secondly, the treated fibers in the first step are soaked in thermoplastic resin in the molten state; thirdly, the fibers which are soaked in the thermoplastic resin in the second step are cooled and solidified, so that the fiber-reinforced thermoplastic composite is obtained. The modified surface treating agent comprises, by mass, 0.5-15% of thermoplastic resin powder. The mechanical properties such as the tensile strength, the tensile modulus, the bending strength, the bending modulus and the cantilever beam notch impact strength of the fiber-reinforced thermoplastic composite prepared through the preparation method are greatly improved, and particularly the properties such as the bending strength, the bending modulus and the cantilever beam notch impact strength are improved by about 15% to the maximum degree.

Description

technical field [0001] The invention belongs to the field of new material production and relates to the field of composite material production, in particular to a fiber-reinforced thermoplastic composite material and a preparation method thereof. Background technique [0002] Fiber-reinforced thermoplastic composites have good tensile modulus, flexural modulus, compression modulus and creep resistance, stable dimensions, short molding cycle, high production efficiency, and also have the remarkable advantage of being recyclable, so its The application fields are constantly expanding, and are widely used in automobiles, machinery, electrical, construction, boats, aerospace and other fields, especially in automobiles. [0003] The composite molding process of fiber-reinforced thermoplastic composites mainly has three steps. First, heat and melt the thermoplastic resin, then infiltrate the reinforcing fibers with the molten resin, and finally cool and solidify. In fiber-reinfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/06C08J5/08C08L23/12C08L77/02C08L55/02C08L69/00C08L67/02C08L81/02
Inventor 雷震黄险波袁志敏陈大华李建军宋威周英辉
Owner KINGFA SCI & TECH CO LTD
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