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Sandwich structure composite material, preparation method and application

A composite material, sandwich structure technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of limited application of special-shaped structural parts, low production efficiency, poor conformability of honeycomb and polymer foam, etc. Maintain the consistency of product performance and the effect of simple operation

Pending Publication Date: 2022-01-21
成都鲁晨新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the sandwich structure is in great demand, its application in some special-shaped structural parts is limited
The disadvantages are as follows: 1) Honeycomb and polymer foam have poor conformability, and it is difficult to prepare sandwich structures with complex curved surfaces without resorting to other complicated operations
For example, when preparing a foam sandwich structure with a large size and complex curved surface shape, it is necessary to use complex mechanical equipment to heat the foam sheet above the softening point and pre-bend it so that the foam matches the shape of the mold and then compound it with the skin, resulting in low production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of sandwich structure composite material, comprising the following steps:

[0026] S1: Prepare fiber fabric prepreg by one-step method: coat the resin matrix on the release paper to form a thin film, compound with the drawn fiber fabric, and use the hot pressing roller and hot plate to make the resin infiltrate the fabric to obtain the required fiber Fabric prepreg, the matrix resin is generally one of epoxy resin, phenolic resin, bismaleimide, and cyanate resin, and the fiber fabric is woven from carbon fiber, glass fiber, aramid fiber, quartz fiber, and basalt fiber In one of the resulting fabrics, the mass content of the resin in the total weight of the prepreg is controlled at 25-50 wt%, and the specific content can be determined according to the thickness and weight requirements of the product.

[0027] S2: Prepare the strong core felt prepreg with one-step method: coat the resin matrix on the release paper to form a thin film, compound it with...

Embodiment 1

[0030] A kind of preparation method of sandwich structure composite material, concrete steps are as follows:

[0031] S1: Prepare fiber fabric prepreg by one-step method: select the LC604 epoxy resin system of Chengdu Luchen New Material Technology Co., Ltd., and coat the resin on the release paper to form a film on the one-step prepreg machine, and draw out 100gsm The quartz fiber plain weave fabric is composited, and the resin and the fiber are fully infiltrated through a hot pressing roller and a hot plate to obtain a quartz fiber fabric prepreg with a resin content of 33%.

[0032] S2: Preparation of strong core felt prepreg by one-step method: choose Chengdu Luchen New Material Technology Co., Ltd. LC604 epoxy resin system, and coat the resin on the release paper to form a film on the one-step prepreg machine, and double-sided coating , compound with the hexagonal honeycomb strong core felt of 155g drawn out, through hot pressing roller, hot plate, make resin and strong c...

Embodiment 2

[0036] A kind of preparation method of sandwich structure composite material, concrete steps are as follows:

[0037] S1: Prepare fiber fabric prepreg by one-step method: choose LC604 epoxy resin system of Chengdu Luchen New Material Technology Co., Ltd., and coat the resin on the release paper to form a film on the one-step prepreg machine, and pull out 209gsm The electronic glass fiber fabric is composited, and the resin and the fiber are fully infiltrated through a hot pressing roller and a hot plate to obtain a glass fiber fabric prepreg with a resin content of 42%.

[0038] S2: Preparation of strong core felt prepreg by one-step method: choose Chengdu Luchen New Material Technology Co., Ltd. LC604 epoxy resin system, and coat the resin on the release paper to form a film on the one-step prepreg machine, and double-sided coating , compound with the hexagonal honeycomb strong core felt of 155g drawn out, through hot pressing roller, hot plate, make resin and strong core fel...

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PUM

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Abstract

The invention discloses a sandwich structure composite material, a preparation method and application. The preparation method comprises the following steps: preparing a fiber fabric prepreg and a strong core felt prepreg by using a one-step method: coating a resin matrix on release paper to form a film, compounding the film with a led-out fiber fabric or strong core felt, and infiltrating the fabric or strong core felt with resin to obtain the prepreg; the core felt prepreg is used as a sandwich layer, the upper surface and the lower surface of the sandwich layer are covered with fiber fabric prepregs, the sandwich layer is placed in a mold, and the sandwich structure composite material is obtained after curing. The sandwich structure composite material is prepared by taking the strong core felt prepreg as the sandwich layer, the operation is simple, processing is not needed, and the sandwich structure composite material can be directly paved according to the shape of a mold and is suitable for manufacturing a special-shaped sandwich structure part; when the sandwich structural member is prepared, splicing is not needed, the mechanical property and the dielectric property of a product are not affected, and the performance consistency of the product is kept.

Description

technical field [0001] The invention relates to the technical field of sandwich structure composite materials, in particular to a sandwich structure composite material, a preparation method and an application. Background technique [0002] Sandwich structure composite material is a kind of composite material composed of lightweight sandwich layer and skin. The sandwich layer is generally honeycomb, polymer foam, etc. Compared with the ordinary composite material shell structure, the sandwich structure composite material has the advantages of high specific strength, high specific modulus, fatigue resistance, sound absorption, heat insulation, and wave transmission. It is widely used in aerospace and industrial fields. [0003] Although the sandwich structure is in great demand, its application in some special-shaped structural parts is limited. The disadvantages are as follows: 1) Honeycomb and polymer foams have poor conformability, and it is difficult to prepare sandwich ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B19/02B32B3/12B32B19/06B32B5/02B32B17/04B32B17/12B32B37/10B32B37/06B32B38/08
CPCB32B19/02B32B3/12B32B19/06B32B5/02B32B5/26B32B37/10B32B37/06B32B38/08B32B2260/021B32B2260/046B32B2262/101B32B2250/40
Inventor 余丽娇张华川贺艺李晓阳段艳兵
Owner 成都鲁晨新材料科技有限公司