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Method for preparing aramid fiber fibre composite sheet material

A technology of aramid fibers and composite sheets, which is applied in the direction of papermaking, textiles, papermaking, paper, etc., can solve the problems of increasing costs and increasing procedures, and achieve the effects of simplified manufacturing process, low production cost and good insulation performance

Inactive Publication Date: 2008-04-23
四川华通特种工程塑料研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, this not only increases the process but also increases the cost

Method used

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  • Method for preparing aramid fiber fibre composite sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Prepare the blank paper of the special synthetic fiber paper of this embodiment according to the following proportions.

[0017] 70 parts (parts by weight) of poly-m-phenylene isophthalamide amine fiber

[0018] Polyethylene terephthalate fiber 30 parts

[0019] The above-mentioned polym-phenylene isophthalamide fiber has a fineness of 1.5d and a length of 6m / m. The polyethylene terephthalate fiber has a fineness of 1.5d and a length of 6m / m.

[0020] Specific production method:

[0021] The polym-phenylene isophthalamide fiber and the polyethylene terephthalate fiber are respectively decomposed into A and B liquids in a hydraulic decomposer at a concentration of 0.05%. Then mix liquids A and B evenly in the slurry mixing tank and send them to the slurry stabilization box. At the same time, add 5 parts of high molecular weight polyethylene oxide into the pulp stabilization box. According to the conventional method of papermaking and forming, after dehydration and dr...

Embodiment 2

[0022] Embodiment 2: the rough paper produced by the method shown in example 1 is placed on the paper holder (1) of accompanying drawing. Put the polyphenylene sulfide paper on the paper holder (6). The "rough paper" on the roll (1) and the polyphenylene sulfide paper on the paper frame (6) are pre-pressed by the traction roller (2) (temperature 190-200°C, line pressure 200N / cm), and then sent into the In the drying tunnel (3), the paper is preheated to 250-26°C in the drying tunnel and then sent to the hot rolling roller for pressure heat sealing (temperature 280-300°C, line pressure 3000N / cm), and then enters the quenching roller for cooling , Shaped, that is, a sheet with a thickness of 0.3-0.35mm.

Embodiment 3

[0023] Embodiment 3: The production method of the sheet is basically the same as that of Embodiment 1. The difference is that the rough paper is made of polyphenylene sulfide fiber instead of polyethylene terephthalate, and a sheet with a thickness of 0.3-0.35mm is obtained.

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Abstract

The present invention discloses composite aramid fiber sheet making process, and is especially process of making sheet with aramid fiber / polyester paper or aramid fiber / polyphenyl thioether paper as material. Aramid fiber / polyester paper or aramid fiber / polyphenyl thioether paper is produced into different types of sheet through superposing, heating in hot roller and pressurizing. During the production, PET film or polyphenyl thioether film to act as adhesive is added between two sheets of paper, and this simplifies the production process, raises the product performance and lowers the production cost.

Description

technical field [0001] The invention belongs to the field of synthetic fiber paper, in particular to a method for manufacturing an aramid fiber composite sheet. Background technique [0002] Aramid paper has high tensile strength, flame retardancy, low expansion coefficient, corrosion resistance and excellent insulation properties. However, since the melting point is close to the decomposition temperature, it cannot be processed by melt extrusion or heating molding. Therefore, the manufacture of sheets requires the addition of other adhesives or thermoplastic materials for compounding. Since the advent of polym-phenylene isophthalamide paper (Nomex paper), a large number of related patents have been published (US patents 3,756,908, 5,667,900). The fiber and pulp are structural fibers; the precipitated fiber made of poly-m-phenylene isophthalamide resin is used as a binder for production. Because the short fibers, pulp, and precipitated fibers are hydrophobic, it is diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/30D21H27/36D21H13/26B31F1/00D21H13/24
Inventor 潘育英刘文良蔡兴明
Owner 四川华通特种工程塑料研究中心有限公司
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