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A lightweight large-scale hollow composite material and its preparation method

A composite material, large-scale technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the difficulty of hollow fabric splicing/lap gap control, and the poor connection strength of hollow composite materials. To solve problems such as mass production, the internal cavity is completely continuous, which is beneficial to light weight and simple operation.

Active Publication Date: 2019-01-04
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a lightweight large-size hollow composite material and its preparation method, which solves the problem of poor connection strength of hollow composite materials in the prior art, the introduction of reinforcing materials leads to weight gain, and the difficulty of controlling the splicing / lapping gap of hollow fabrics Problems that are large and difficult to mass-produce
[0008] This application effectively solves the problems in the prior art of poor connection strength of hollow composite materials, weight gain caused by the introduction of reinforcing materials, difficulty in controlling the splicing / lapping gap of hollow fabrics, and difficulty in mass production

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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  • A lightweight large-scale hollow composite material and its preparation method
  • A lightweight large-scale hollow composite material and its preparation method
  • A lightweight large-scale hollow composite material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] As shown in the figure, the lightweight large-size hollow composite material includes a first hollow fabric and a second hollow fabric; the first hollow fabric includes a first pile layer and a first upper layer respectively arranged on the upper and lower surfaces of the first pile layer and the first lower layer, the first pile layer at one end in the length direction of the first hollow fabric, the first upper layer and the first lower layer are arranged at the same end, and the first pile layer at the other end in the length direction of the first hollow fabric The layer and the first upper layer are arranged at the same end, and the length of the first lower layer exceeds the first fleece layer and the first upper layer to form the first overlapping surface layer; the second hollow fabric includes the second fleece layer and respectively set On the second upper layer and the second lower layer on the upper and lower surfaces of the second pile warp layer, the second...

Embodiment 2

[0043] Lightweight large-size hollow composite material, including a first hollow fabric, a second hollow fabric and a third hollow fabric; the first hollow fabric includes a first pile layer and a first upper layer respectively arranged on the upper and lower surfaces of the first pile layer and the first lower layer, the first pile layer at one end in the length direction of the first hollow fabric, the first upper layer and the first lower layer are arranged at the same end, and the first pile layer at the other end in the length direction of the first hollow fabric The layer and the first upper layer are arranged at the same end, and the length of the first lower layer exceeds the first fleece layer and the first upper layer to form the first overlapping surface layer; the second hollow fabric includes the second fleece layer and respectively set On the second upper layer and the second lower layer on the upper and lower surfaces of the second pile warp layer, the second pi...

Embodiment 3

[0055] The structure is basically the same as that of Example 2, except that there are two third hollow fabrics.

[0056] First use the third lapping surface layer and the fourth lapping surface layer of each third hollow fabric to splice and compound all the third hollow fabrics from the length direction to form the third lapping surface layer and the fourth lapping surface layer respectively at both ends. The 3rd lengthening hollow fabric of the 4th lapping surface layer; Then utilize the 4th lapping surface layer of the 1st lapping surface layer and the 3rd lengthening hollow fabric one end to lengthen the 3rd hollow fabric and the first hollow fabric from the length direction Spliced ​​together, wherein the first lapping surface layer is compounded on the third lower layer, the fourth lapping surface layer is compounded on the first upper layer, and the first fleece layer and the third fleece layer are closely bonded and compounded together ; Splice the third elongated hol...

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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Abstract

The invention discloses a lightweight large-size hollow composite material, and a preparation method thereof. The lightweight large-size hollow composite material comprises a first hollow fabric and a second hollow fabric. In preparation, overlapping paving of the different fabric at a sequence is carried out, and the hollow fabric is infiltrated and cured with resin so as to obtain the lightweight large-size hollow composite material. According to a preparation method, a special structure design hollow fabric overlapping manner is adopted, fiber continuous breakthrough is realized, and the mechanical properties of the lightweight large-size hollow composite material at overlapping parts are ensured; the existing of a overlapping surface structure is capable of realizing hollow fabric overlapping limiting preferably, ensuring the precision and consistency of overlapping size; surface layer reinforcement of composite material overlapping parts is not necessary, and it is beneficial for reducing of the weight of the hollow composite material; the overlapping design is capable of preparing the large-size hollow composite material with unlimited breadth, and complete continuousness of an internal cavity is achieved; after product combination, no secondary processing or other subsequent process is needed, product quality stability and production efficiency are ensured; and application range of the hollow composite material is widened greatly. Operation of the preparation process is simple, no special requirement on compound equipment is promoted, continuous production can be realized, production efficiency is high, cost is low, and the preparation method is suitable for batch production.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a lightweight large-size hollow composite material and a preparation method thereof. Background technique [0002] The hollow composite material is a new type of sandwich composite material. The basis of the sandwich structure is the warp and weft yarns of the surface layer and the Z-direction fibers that connect the two surface layers and form the core. The hollow fabric directly forms a three-dimensional overall composite sandwich structure after being compounded with resin. Compared with honeycomb materials and foam materials, hollow composite materials have the advantages of not easy to delaminate, strong designability, filling and pre-embedding, and good Thermal insulation, heat insulation, and sound insulation effects have been widely used in rail transit, vehicle shelters, and building materials. The hollow composite material has a continuous cavity inside, ...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/02B32B5/26B32B27/04
CPCB32B5/024B32B5/26B32B2250/20B32B2260/023B32B2260/046B32B2262/14
Inventor 张守玉周正亮陈同海
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD