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Method for preparing synthetic paper containing polysulfone amide precipitation fibers

A technology of polysulfone amide and precipitated fibers, which is applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, papermaking, etc., can solve the problems of insufficient strength retention rate and difficult application of insulating materials, etc., and achieve good Dimensional stability, outstanding thermal oxidation resistance, and low weight loss

Active Publication Date: 2009-03-25
LONGPONT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent application CN1834342 provides a kind of full meta-aramid fiber paper, which contains 5-95% of aramid 1313 chopped fibers and 5-95% of aramid 1313 precipitated fibers, because the meta-aramid fibers are mainly precipitated As a bonding fiber, the fiber has insufficient strength retention in high temperature environments, making it difficult to apply to a wider range of insulating materials

Method used

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  • Method for preparing synthetic paper containing polysulfone amide precipitation fibers
  • Method for preparing synthetic paper containing polysulfone amide precipitation fibers
  • Method for preparing synthetic paper containing polysulfone amide precipitation fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare the present embodiment 1 synthetic fiber paper in the following proportions:

[0026] Aramid 1313 fiber (5-6mm) 55 parts by weight (hereinafter referred to as "parts")

[0027] Polysulfone amide precipitated fiber 4 5 parts

[0028] The aramid 1313 fiber with the above content is made into pulp in a fiber deflaking machine at a concentration of 1% by weight, and the polysulfone amide precipitated fiber is beaten by a refiner at a concentration of 2%, and the beating degree is controlled to be about 55°SR. slurry. After the two kinds of slurry are uniformly mixed in the batching tank, the papermaking pulp that can be added to the headbox of the papermaking wire is formed, and polyethylene oxide is added into the pulp stabilization box. The head of the slurry on the net is adjusted by the stock stabilizing box, and the slurry is evenly distributed on the paper forming wire in the headbox, and the excess slurry is overflowed to the white water pool. When the slu...

Embodiment 2

[0033]Prepare the present embodiment 2 fiber papers in the following proportions:

[0034] Aramid 1313 fiber (5 ~ 6mm) 90 parts

[0035] 10 parts of polysulfone amide precipitated fiber

[0036] In this embodiment, the amount of aramid 1313 fiber and polysulfone amide fibridated fiber is adjusted. The preparation method of the fiber paper is the same as in Example 1, and the results obtained are shown in Table 2:

[0037] Table 2 Physical and mechanical properties of fiber paper

[0038]

Embodiment 3

[0040] Prepare the present embodiment 3 fiber papers in the following proportions:

[0041] Aramid 1313 fiber (5 ~ 6mm) 15 parts

[0042] Polysulfone amide precipitated fiber 85 parts

[0043] This embodiment adjusts the consumption of aramid 1414 fiber and fibrid, the preparation method of fiber paper is the same as that of Example 1, and the results obtained are shown in Table 3:

[0044] Table 3 Physical and mechanical properties of fiber paper

[0045]

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Abstract

The invention provides a synthetic fiber paper, which contains the following ingredients in parts of weight: 5-95 parts of structural fiber and 5-95 parts of splicing fibers, wherein, the structural fiber is polyisophthaloyl metaphenylene diamide fiber and the splicing fiber is polysulfonamide precipitated fiber. The synthetic fiber paper is produced by the following steps: the structural fiber and the splicing fiber are made into be formed by a wet method and hot-rolled to obtain the paper. The synthetic fiber paper provided by the invention has high intensity conservation rate under the high temperature, excellent paper-making overall properties compared with the insulation paper made of full para-fiber, meta-fiber and full polysulfonamide material, and is more suitable for the insulation requirement under high-temperature environment.

Description

technical field [0001] The invention relates to a synthetic fiber paper, in particular to a chemical fiber paper containing polysulfone amide precipitated fiber and a preparation method thereof. Background technique [0002] With aerospace, military, electronics, machinery and other industries that require high safety and lightness, high-performance aramid fiber has high strength, low deformation, high temperature resistance, chemical corrosion resistance, no fatigue reaction and Excellent insulation performance and many other characteristics have been widely used. Therefore, high-performance aramid fiber paper has also emerged as the times require. [0003] Existing aramid fibers are used for papermaking. For poly-p-phenylene terephthalamide fibers (aramid 1414 fibers), most of them use polyester or polyphenylene sulfide hot-melt fibers as bonding fibers; For polym-phenylene isophthalamide fibers (aramid 1313 fibers), aramid 1313 fibrids are basically used as bonding fiber...

Claims

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Application Information

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IPC IPC(8): D21H13/26D21F11/00D21H25/04
Inventor 衡沛之唐文勇陶世毅王丽萍
Owner LONGPONT
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