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Pre-oxidized fiber filament / pre-oxidized fiber net tire composite pricking prefabricated body and method for manufacturing the same

A carbon fiber mesh, pre-oxidized silk technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of competition in production cost or production efficiency, consumption of large manpower, material resources, and prolonged production cycle, saving manpower, The effect of improving the production process and reducing the production cycle

Inactive Publication Date: 2009-08-12
宜兴市飞舟高新科技材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above is the process of producing carbon fiber prefabricated bodies by the original process, in which the fibers used are fibers that have undergone a carbonization process, and its products need to undergo a series of repeated treatments such as high temperature and carbonization in the subsequent deposition process, which requires additional consumption of a lot of manpower, Material resources make the production cost more than 30% higher than that of foreign markets, and the production cycle is greatly extended. Neither production cost nor production efficiency can compete with foreign products.

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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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] Example 1: Cut the carbonized silk fiber into a length of 38-48mm and a surface density of 30-38g / m 2 The short fiber is heated to 30 degrees in an oven with a humidity of 3 to 5%. After 28 to 30 hours, the fiber can be soft and smooth by itself, which improves the texture and performance of the fiber (but it cannot be mixed with any chemical components and sundries. , otherwise it will affect the quality of subsequent products) The changeability of automation equipment and fibers determines the combination with the quality of the mesh tire, so that the short fiber density forms a separated material, (because the short fibers cannot be damaged or it will affect the subsequent products) in the isolated state Make the fiber Automatically transfer to automatic control of weight / thickness, use machinery to automatically lay into net tires, surface density is 30-38g / m 2 , the product is a single-layer composite material of continuous pre-oxidized long fibers and carbon fiber...

example 2

[0028] Example 2: The net tire surface density combined by the above-mentioned process method is 2, and the surface density of the pre-oxidized silk without weft long fiber is 348g / m 2 According to the pre-oxidized silk without weft radial long fiber, it is combined with the mesh tire layer and then combined with layer-by-layer and plane multi-angle needle punching, and the pre-punching density is 36-40 needles / cm according to the process requirements 3 , the acupuncture depth is 20mm, according to the above process requirements, the interlayer density of layer-by-layer plane multi-angle pre-punching is 15 layers / cm, the thickness of the short fiber mesh layer is 0.5mm, and the radial long fiber thickness is 0.9mm, which is equal to the bulk density of 0.6g / cm. cm 3 The three-dimensional blank body mat with the combination of long fiber and net tire ratio, the prefabricated body mat is made of high temperature resistance, high running-in, and other high performance advantages ...

example 3

[0029] Example 3: According to the process combination demonstrated by the above process, the layer density of carbon fiber mesh tire is 123g / cm 2 , the interlayer density is 18 layers / cm (without lengthening fibers), and the needling is combined layer by layer on the plane, the needling density is 54 needles / cm, and the thickness of the mesh layer is 0.6mm, which is equal to the bulk density of 0.22g / cm 3 stereo prefab. The prefabricated body made by modern deposition technology has high-performance materials such as radiation resistance, heat insulation, and high temperature resistance, which can be used in high-temperature furnaces in smelting industry, medical equipment, heat-resistant insulation layer materials, and radiation-resistant ultra-light parts materials. Compared with the original old process, the cost is saved by about 30%.

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Abstract

The invention discloses a preoxidized silk long macrofiber / carbon fiber screen tire needling prefabricated body and a preparation method thereof. The needling prefabricated body is a layered composite material; each layer is a monolayer composite material prepared from the preoxidized silk long macrofiber and a carbon fiber screen tire; the monolayer composite material is formed by continuously needling radial fibers formed by preoxidized silk weftless macrofibers which are arrayed on the carbon fiber screen tire in rows; and a plurality of monolayer composite materials are needled to form a composite needling prefabricated body. The products of the invention obtained by a modernized high-tech carbon / carbon sediment process has high carbon content and no layering, and excellent performances of strong wear resistance, high temperature resistance, radiation resistance, corrosion resistance, light weight and the like, and greatly reduces the production time and the manufacturing cost. The high-performance fiber product is a novel functional structural product. The unique performance and advanced production process of the high-performance fiber product determine wide application prospect of the carbon fiber products in the fields of aviation, space flight, civil construction, sports medicine, electronic communication and the like.

Description

Technical field: [0001] The present invention relates to a composite needle-punched preform, especially a composite needle-punched preform made of PAN (polyacrylonitrile fiber) pre-oxidized long fibers and carbon fiber mesh. The present invention also relates to the composition of the composite needle-punched preform. Preparation. Background technique: [0002] The composite needle-punched prefabricated body, after being treated by modern chemical high temperature, high pressure, and various carbon / carbon deposition processes, has the characteristics of high temperature resistance, friction resistance, and light texture. New products of structural parts. [0003] The original process of the composite needle-punched preform is to use polyacrylonitrile-based carbon fiber long fibers and short-fiber mesh tires to make a three-dimensional preform through multi-layer needle punching. The process steps mainly include: 1. Carding short fibers with a length of 50-60mm into a thick...

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 Applications(China)
IPC IPC(8): D04H5/02D04H5/08
Inventor 缪伯承
Owner 宜兴市飞舟高新科技材料有限公司
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