Method for preparing novel welfless cloth and composite UD profile

Abstract

The invention relates to a preparation method of a novel weftless cloth and composite UD material, including the steps: (1) a feeding tension box of a tow frame is provided with a constant static generator; (2) the tow is parallel laid and is put into a steeping vat, then the weftless cloth is topped with gum at the face and the back on a roller and by an atomizing and spraying device; (3) gum at both the face and the back of the weftless cloth is scraped in parallel; (4) the formed weftless cloth is hauled by a chain and parallel conveying way, parallel cut or conversely folded to form an UD composite board of multi-layer structure. The method of the invention is a continuous production method of stable quality and requires low cost, and the prepared UD material is characterized by even quality, fiber being evenly stressed, even sizing rate, etc.

Description

technical field [0001] The invention belongs to the field of preparation of polymer composite materials, and in particular relates to a preparation method of a novel weft-free cloth and its composite UD profiles. Background technique [0002] Use high-performance fibers, such as carbon fiber, aramid fiber, and high-strength high-modulus polyethylene fiber to make non-weft fabrics and composite profiles, which are mainly used for bulletproof, stab-proof and other safety protection materials, so its quality stability is very important. [0003] US.4.916.000 and US5.149.391, Chinese patents 03109121.0, 03158881.6 disclose several production methods, the main defects: ① lack of effective and uniform control of the static electricity and tension of the tow, resulting in uneven silk laying; ② gluing The process leads to uneven glue layer; ③There is no recycling and gathering device, which not only pollutes the workshop environment, is harmful to the health of front-line workers, b...

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Problems solved by technology

[0003] US.4.916.000 and US5.149.391, Chinese patents 03109121.0, 03158881.6 disclose several production methods, the main defects: ① lack of effective and uniform control of the static electricity and tension of the tow, resulting in uneven silk laying; ② gluing The process leads to uneven glue layer; ③There is no recycling and gathering device, which not only pollutes the workshop environment, is harmful to the health of front-line workers, but also increases production costs; ④Using curved rollers for conveying and coiling, it is easy to form between the surface layers of composite UD profiles. Internal stress and deformation and damage of end composite profiles affect the performance of the final product, especially the safety of bulletproof and stab-proof materials

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