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Method for preparing flexible non-weaving suction wave material and product thereof

A wave-absorbing material and non-woven technology, which is applied in the field of preparation of flexible non-woven wave-absorbing materials and its products, can solve the problems that the relevant content of the preparation method has not been disclosed, and achieve industrialization with easy implementation, low cost, and easy laying volume effect

Inactive Publication Date: 2009-04-15
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, it is the first time in China that the structural absorbing material is made by blending and carding carbon fiber and other fibers, and then acupuncture, and the relevant content of its preparation method has not been published.

Method used

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  • Method for preparing flexible non-weaving suction wave material and product thereof

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preparation example Construction

[0022] The preparation method of the flexible nonwoven wave-absorbing material of the present invention mainly includes five steps: (1) matching of fiber raw materials; (2) fiber mixing; (3) carding into a web; (4) laying the web; (5) reinforcement.

[0023] According to the existing technology, there are mainly two technical problems to be solved: fiber selection and mixing carding, and process parameter setting of wave-absorbing materials.

[0024] The preparation method of the present invention requires the selected fiber material to have properties such as wave-absorbing performance, sun-resistant, mildew-proof and moth-proof. The present invention selects chopped carbon fiber with wave-absorbing performance, single filament diameter of 5-10 μm, length of 30-50 mm, polyester fiber: linear density of 1.5-3.0 dtex, length of 30-60 mm. Carbon fiber and polyester fiber are selected according to a certain ratio and selected according to a certain ratio.

[0025] The key probl...

specific Embodiment

[0030] Fiber raw material: chopped carbon fiber, monofilament diameter 5-10μm, length 30-50mm, polyester fiber: linear density 1.5-3.0dtex, length 30-60mm.

example 1

[0032] (1) Selection of fiber raw materials: chopped carbon fiber monofilament diameter 5, length 40mm, mass percentage 5%; polyester fiber: linear density 1.5dtex, length 60mm, mass percentage 95%.

[0033] (2) Fiber mixing: first perform "false blending" and then mix.

[0034] (3) Carding into a web: the carding machine combs into a web.

[0035] (4) Laying: cross-lapping.

[0036] (5) Reinforcement: Send the laid fiber net into the needle loom for pre-punching and main stabbing.

[0037] Product Quantitative 100g / m 2 , thickness 3.5mm, acupuncture density 800 pricks / cm 2 .

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Abstract

The invention relates to a preparation method of flexible non-weaving wave-absorbing materials, and products thereof. The wave-absorbing material is non-weaving cloth of wave-absorbing carbon fiber and polyester through mixed needle punching, wherein, the mass percentage content of the carbon fiber is 5 to 10 percent, and the mass percentage content of polyester fiber is 90 to 95 percent; the preparation method comprises the steps of: (1) the selecting and matching of fiber materials; (2) fiber mixing; (3) carding and netting; (4) lapping; and (5) solidification. The invention has the beneficial effects that: (1) the process of the preparation method is simple, has easy control and easy implement of industrialization, and can guarantee the performance of the product to be reliable, the quality to be stable and the cost to be low; and (2) the products have excellent performance, good wave-absorbing effect, light texture, easy spreading and rolling and storage, convenient use, easy processing into a plurality of forms, and flexible use manner, and are suitable for large-area wave-absorbing layers of tent cover materials, for example, the products can be made into gun covers, tarpaulin, and tents used for armies and warehouses, and the like, and also can be made into a plurality of patterns which can be used as anti-electromagnetic radiation products for civilian use.

Description

(1) Technical field [0001] The invention specifically relates to a preparation method of a flexible non-woven wave-absorbing material and its products, which belong to the electromagnetic radiation absorption and shielding treatment technology and related materials. (two), background technology [0002] With the rapid development of radio technology, electronic and communication equipment are developing in the direction of sensitivity, density, high frequency and diversification. Electromagnetic wave technology in the microwave band has been more and more widely used in various industrial fields, such as mobile phones, microwave ovens, wireless Network, computer, TV, video and optical communication, etc., which make electromagnetic radiation everywhere; not only cause system failure, image distortion, radar confusion, etc., but also seriously endanger human health. The electromagnetic radiation of military electronic equipment may become a clue for enemy reconnaissance. [...

Claims

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Application Information

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IPC IPC(8): D04H1/46D01G13/00H05K9/00D04H1/4382
Inventor 焦晓宁彭富兵赵思
Owner TIANJIN POLYTECHNIC UNIV
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