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Preparation method of natural mulberry silkworm/tussah silk fabric reinforced epoxy resin composite material

An epoxy resin and composite material technology, which is applied in the field of natural mulberry/tussah silk fiber fabric reinforced epoxy resin composite material and its preparation, can solve the problems such as the application of the impact resistance engineering structure of the silk fiber composite material without investigation, and achieve the improvement of Energy absorption capacity, simple preparation method, and simple effect

Inactive Publication Date: 2020-02-21
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In one of the inventions using silk fabric as a reinforcement (application number 201611127586.3), there is no preparation of composite materials based on thermosetting epoxy resin, and the application of silk fiber composite materials to low-temperature environments and impact-resistant engineering structures has not been investigated.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of natural mulberry silkworm/tussah silk fabric reinforced epoxy resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0056] (1) Choose the mulberry silk fiber plain weave fabric produced by Huzhou Yongrui Textile Co., Ltd. (Zhejiang), with an area density of 90gm -2 , the number of fibers in the vertical and horizontal directions is the same, and each strand contains about 80 silk monofilament fibers. The mulberry silk fiber is degummed with sodium bicarbonate solution. Before blending with epoxy resin, the mulberry silk plain weave fabric is placed in an oven. The condition is 60°C for 5 hours, and then heat-pressed at 60°C to improve the flatness and compactness of the fabric;

[0057](2) Two different systems are used for the resin: a. Bisphenol A type E51 epoxy resin and curing agent BC12 (modified amine curing agent) produced by Dasen (Tianjin) Material Technology Co., Ltd., the weight ratio of the two It is 100:84, the curing temperature is 120 ℃, and the curing time is 2 hours; b. Araldite LY 1564 epoxy resin and Aradur 3486 curing agent produced by Huntsman Company, Araldite LY 1564 ...

Embodiment example 2

[0061] (1) Select the tussah silk fiber fabric produced by Ruifuxiang Silk Cloth Store (Beijing), with a surface density of 135g m -2 , the tussah silk plain weave cloth contains about 110 fibers per share in the longitudinal direction, and about 30 fibers in each share in the transverse direction, and the average cross-sectional area of ​​each tussah silk fiber is 291um 2 . The tussah silk fiber is treated with alkali degumming and demineralization (the tussah silk fiber is different from mulberry silk, and there are a lot of mineral particles on the surface), before blending with epoxy resin, the mulberry silk plain weave fabric is placed in an oven at 60°C , 5 hours, and then heat-pressed at 60°C to improve the flatness and compactness of the fabric;

[0062] (2) The resin is bisphenol A type E51 epoxy resin and curing agent BC12 (modified amine curing agent) produced by Dasen (Tianjin) Material Technology Co., Ltd., the weight ratio of the two is 100:84, and the curing te...

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Abstract

The invention provides a preparation method of a natural mulberry silkworm / tussah silk fabric reinforced epoxy resin composite material. The preparation method comprises the following steps: selectingand pretreating mulberry silkworm / tussah silk fabric; and preparing the natural mulberry silkworm / tussah silk fabric reinforced epoxy resin composite material by a hand lay-up and hot press molding process and a vacuum resin transfer molding (VARTM) process. The raw material silk fiber adopted by the invention comes from natural sources, is biodegradable and has environmental friendliness; the silk fabric is easy to obtain and mature in textile process; the prepared natural mulberry silkworm / tussah silk fabric reinforced epoxy resin composite material is a low-carbon and environment-friendlygreen engineering material. According to the invention, different forming processes can be adopted, the preparation method is simple, a final composite material finished product has higher tensile strength, bending strength and toughness, and the natural mulberry silkworm / tussah silk fabric reinforced epoxy resin composite material shows excellent energy absorption capacity under the condition ofhigh-speed impact load.

Description

【Technical field】 [0001] The invention belongs to the technical field of composite materials and their preparation, and relates to a natural mulberry / tussah silk fiber fabric reinforced epoxy resin composite material and a preparation method thereof. 【Background technique】 [0002] In the 21st century, with the deepening of the energy crisis and the gradual deterioration of the ecological environment, people are increasingly inclined to use natural fibers as reinforcements for resin-based composites to replace traditional synthetic fibers (carbon fibers, glass fibers, etc.). Natural fiber composites have the characteristics of environmental friendliness, biodegradability, and light weight, and have broad application prospects. [0003] As a plant fiber in natural fibers, it has been deeply studied and gradually began to be widely used in various industries, but another major category of natural fibers—silk fiber has not yet been extensively studied. Compared with plant fibe...

Claims

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Application Information

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IPC IPC(8): C08J5/04C08L63/00
CPCC08J5/045C08J2363/00
Inventor 管娟杨康田文晗吴梓泓
Owner BEIHANG UNIV
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