Forming method of thermoplastic composite material with integrated sandwich structure

A molding method and technology of composite materials, applied in the direction of coating, etc., can solve the problems of difficult operation, high viscosity, and high molding temperature of special engineering plastics, and achieve the effects of simple process, reduced production cost, and reduced equipment requirements

Inactive Publication Date: 2021-06-22
南京特塑复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with thermosetting resins, thermoplastic resins, especially special engineering plastics, have high viscosity and cannot be formed by traditional molding methods, and the molding temperature of special engineering plastics is high, which requires high temperature resistance and stability of equipment and auxiliary materials, and difficult operation bigger

Method used

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  • Forming method of thermoplastic composite material with integrated sandwich structure
  • Forming method of thermoplastic composite material with integrated sandwich structure

Examples

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Effect test

Embodiment 1

[0022] A method for forming a glass fiber reinforced polyphenylene sulfide integrated sandwich structure composite material, comprising the following steps:

[0023] (1) The 66tex continuous E-glass fiber yarn is used as the "core" shaft yarn 1 and the "skin" polyphenylene sulfide (PPS) yarn 2 is compounded through special textile equipment to obtain a "skin-core structure" wrapped yarn ;

[0024] (2) Weaving the wrapped yarn prepared in step (1) into an integrated hollow structure three-dimensional fabric prefabricated body with a thickness of 8 mm by using a special special loom;

[0025] (3) Place the above-mentioned three-dimensional fabric prefabricated body on a flat vulcanizing machine for double-sided heating at a heating temperature of 325°C to melt the thermoplastic resin tow, wrap and infiltrate the reinforcing fiber tow;

[0026] (4) Finish the four sides of the hollow fabric so that the three-dimensional fabric prefabricated body can stand well and have a uniform...

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Abstract

The invention discloses a forming method of thermoplastic composite material with an integrated sandwich structure. The forming method comprises the following steps of (1) compounding continuous reinforced fiber tows and thermoplastic resin tows to form composite yarns with "skin-core structures"; (2) weaving the prepared composite yarns into a three-dimensional fabric preform with an integrated hollow structure through a special weaving machine; (3) heating the three-dimensional fabric preform to melt the thermoplastic resin tows and infiltrate the reinforced fiber tows; and (4) cooling and shaping to prepare the composite material with the integrated sandwich structure. The forming method provided by the invention solves the problems that the thermoplastic special engineering plastic is high in viscosity and the three-dimensional fabric reinforcement is difficult to impregnate, and the forming process is low in equipment requirement, simple in process and low in production cost.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a molding method of an integrated sandwich structure thermoplastic composite material. Background technique [0002] Integrated sandwich structure composite material is a new type of sandwich composite material, which is lighter than traditional solid composite materials, overcomes the shortcomings of traditional honeycomb, foam core materials and other sandwich composite materials that are easy to delaminate and have poor impact resistance, and has the ability to With the advantages of strong design, filling and pre-embedding, and good thermal insulation, heat insulation, and sound insulation effects, it has been widely used in rail transit, vehicle shelters, building materials, communications, aerospace and other fields. [0003] At present, integrated sandwich structure composite materials mainly use thermosetting resin as the resin matrix, and adopt a two-step m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B15/12B29B15/14B29B11/00B29C70/50B29C70/54
CPCB29B11/00B29B15/125B29B15/14B29C70/50B29C70/54
Inventor 水锋王孝军陈同海杨杰敬雪峰
Owner 南京特塑复合材料有限公司
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