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Composite material member with surface function layer and VIMP preparation method thereof

A composite material component and composite material technology, applied in the field of composite materials and their preparation, can solve the problems of not being able to impart a surface layer to the product, and achieve the effects of increasing stiffness, fast impregnation, and good surface quality

Inactive Publication Date: 2010-09-15
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional VIMP process just places the fiber reinforcement directly on a rigid mold, then uses vacuum negative pressure to infuse the resin system, impregnates the fiber reinforcement, and then solidifies it at room temperature or under heating conditions; and the same process can only be used once. It is a kind of resin matrix, which cannot give special functions to the surface of the product

Method used

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  • Composite material member with surface function layer and VIMP preparation method thereof
  • Composite material member with surface function layer and VIMP preparation method thereof
  • Composite material member with surface function layer and VIMP preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of Composite Front Covers for Train Locomotives

[0041] Adopt preparation method of the present invention to prepare a kind of composite material head cover for locomotive, specifically comprise the following steps:

[0042] 1. Prepare the mold

[0043] According to the pre-designed locomotive head cover structure size prepared as follows image 3 Die 1 shown.

[0044] 2. Preparation of reinforced resin film by RFI process

[0045] 2.1 Cutting and laying reinforcing material: cutting the reinforcing material used to prepare the reinforced resin film. The reinforcing material is made of alkali-free glass fiber 02 plain cloth (purchased from Jiangsu Danyang Zhongya Glass Fiber Co., Ltd.), according to the shape and size of the mold 1 Cut three layers of E-glass fiber 02 plain weave, and then image 3 The surface layer fiber preform 2 is obtained by sequentially stacking and laying on the surface of the mold 1 as shown;

[0046] 2.2 The first resin system...

Embodiment 2

[0057] Preparation of Large FRP Composite Hull Shell

[0058] Adopt the preparation method of the present invention to prepare a kind of large-scale fiberglass composite material member used as the hull shell, specifically comprising the following steps:

[0059] 1. Prepare the mold

[0060] A single-sided rigid mold for molding is prepared according to the pre-designed structural size of the hull.

[0061] 2. Preparation of reinforced resin film by RFI process

[0062] 2.1 Cutting and laying reinforcing material: cutting the reinforcing material used to prepare the reinforced resin film, the reinforcing material is alkali-free glass fiber 02 plain cloth (purchased from Jiangsu Danyang Zhongya Glass Fiber Co., Ltd.), and cutting three times according to the shape and size of the mould. A layer of non-alkali glass fiber 02 plain weave cloth, and then stacked on the surface of the mold in turn;

[0063] 2.2 The first resin system for dip coating: prepare a certain amount of 9...

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Abstract

The invention belongs to the technical field of a multilayer structural composite material member and a preparation method thereof and specifically discloses the composite material member with a surface function layer and a VIMP preparation method thereof. The composite material member comprises an outer surface layer and a main body layer, wherein, the outer surface layer and the main body layer are respectively a first composite material system and a second composite material system; and the first composite material system takes epoxy resin, phenolic resin and the like as a matrix, the second composite material system takes unsaturated polyester resin as a matrix, and the two systems take fiber cloth of carbon fiber or glass fiber as reinforcement. The VIMP preparation method comprises the following steps: firstly preparing a reinforced resin film on a die surface for vacuum dip molding by a resin film infiltration process, and then preparing the composite material member with a molding die covered with the reinforced resin film through the vacuum dip molding process. The VIMP process of the invention combines the double advantages of an RFI process and the VIMP process; and the obtained composite material member has better surface quality, better integrity and excellent comprehensive performances.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a composite material member with a multilayer structure and a preparation method thereof. Background technique [0002] Low-pressure liquid molding technology (Liquid Composite Molding, referred to as LCM) is a molding process widely used in the preparation of large-scale composite components, which refers to injecting liquid polymer into a closed cavity with fiber preforms, or heating and melting The resin film pre-placed in the mold cavity, the liquid polymer completes the infiltration of the resin / fiber while flowing and filling the mold, and then solidifies and shapes it into a type of preparation technology. Vacuum Infusion Molding Process (hereinafter referred to as VIMP) and resin film infiltration (hereinafter referred to as RFI) are the most common advanced LCM process technologies. The LCM process technology can impregnate and form large-scale co...

Claims

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Application Information

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IPC IPC(8): B32B27/04B32B27/06B32B27/18B32B1/00B29C70/44B29C70/54
Inventor 肖加余曾竟成刘钧江大志杜刚邢素丽王春齐杨孚标彭超义尹昌平鞠苏
Owner NAT UNIV OF DEFENSE TECH
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