Textile Composites -- Introduction To The Knowledge Of Box Fabrics

< p > in recent years, the new composite < a target= "_blank" href= "http://www.91se91.com/" > strong > textile > /strong > /a > material and glass fiber as a basic raw material, with the development of processing technology and auxiliary material technology, has been widely used in many areas of the public.

Since twenty-first Century, China's new textile and composite materials industry has maintained rapid growth, adding boundless splendor to the stage of new materials in the world.

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< p > with the wide application of textile composites, the requirements for the structural modeling of knitted fabrics are becoming more and more diverse. At present, three dimensional tube fabric, three dimensional round shell fabric, three-dimensional hollow fabric and three-dimensional solid fabric have been developed in the world.

Through observation, many parts of machine equipment are box shaped, such as Ma Dazhao, the shell of machine equipment, and so on. The shape of the box is varied: square, rectangle, multi box structure, trapezoid shape and so on.

The design and production of box shaped fabric, as a reinforcing material for textile composites, has wide application prospects.

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< p > at present, the methods of producing box shaped 3D fabrics are mainly woven, knitted and braided. Different methods of forming fabrics have different principles and different mechanical properties. Woven three-dimensional fabric has high production efficiency and stable structure, which is conducive to the strength of yarn itself.

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The support pipe fabric and the box shaped three dimensional hollow fabric are woven fabrics. The production principle is the formation of the combination method of < a target= "_blank" href= "http://www.91se91.com/" > strong > fabric < /strong > /a > with different layers. Drawing on the production method of the three dimensional tube fabric and the three-dimensional hollow fabric, whether the fabric combination of different layers can be used to design and produce box shaped fabrics, under the inspiration of this idea, after repeated thinking and trying, the box shaped fabric is folded, and the weaving principle of the multi-layer fabric is used, and the box shaped fabric can be completely designed and produced by the combination of different layers of fabrics. < p > box 3 D

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"P >" from the results of the folding simulation test, the box fabric that meets the requirements of these sizes is designed. In addition to the reasonable design of the box fabric, the key is to control the warp and latitude of the fabric and ensure the 45 degree angle to ensure that the fabric is box shaped.

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< p > if the ratio of warp / weft density of the box fabric is 1: 1, to make the triangular fabric 45 degrees, we need to control the warp / weft yarn in the triangle area at the ratio of 1 to 1.

If the warp and weft density is not 1:1, the number of weft knitted yarns can be controlled according to the ratio of warp / weft yarn density, and the angle formed by the triangular area is 45 degrees.

After folding, there are 45 or 4 layers of double weave area along the warp and weft direction. Even though the size of the box is very small, the general cam opener and dobby loom can no longer meet the production requirements, so it needs to be produced on jacquard looms.

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< p > research has found that the design of square box fabric can be divided into two main cases: one is that when the length of the bottom of the square box fabric is larger than or equal to 2 times the height, the box shaped fabric is designed by the weaving method of double layer fabric, and the other is that when the square box fabric is 2 times higher than the long side of the bottom of the square box fabric, it can adopt the 4 fold method to design and produce the box shaped fabric.

At the same time, the problems needing attention in the production of box shaped fabrics are expounded, which brings convenience to the design and production.

For other shapes of boxes, the folding method can also be used to design some boxes based on square boxes.

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< p > textile composites are the most promising and high value-added products of textile a target= "_blank" href= "http://www.91se91.com/" > strong > clothing < /strong > /a > in recent years. They are light composite materials widely used in various industries.

In order to adapt to the development of society, textile and composite products are developing towards high performance, high function, light weight, differentiation, individuation, health and safety, environmental protection and comfort.

At present, the development of China's textile composite materials market is not yet mature, and the market demand for product performance is higher and higher. At the same time, in order to meet the requirements of energy, environmental protection and other policies, the development of products is becoming more and more difficult.

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