Method for manufacturing high-performance polyphenylene sulfide fibre paper

A technology of polyphenylene sulfide fiber and manufacturing method, which is applied in the directions of synthetic cellulose/non-cellulose material pulp/paper, fiber raw material processing, papermaking, etc. Development requirements and other issues, to achieve the effects of good dimensional stability, excellent electrical conductivity and high strength

Inactive Publication Date: 2008-03-26
SICHUAN DEYANG CHEM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the Chinese Invention Patent Publication (CN1222604A0), the manufacture method of poly-p-phenylene terephthalamide synthetic paper is applied, but it does not contain polyphenylene sulfide fiber in its compositio

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] According to the sodium sulfide of 0.1 mole, the sodium hydroxide of 0.14 mole, the ratio of the lithium chloride of 0.9 mole, above-mentioned reactant is dissolved in the N-methylpyrrolidone, under nitrogen protection with 1.02 mole (calculated in proportion) to Dichlorobenzene reacts at 260-270°C to obtain polyphenylene sulfide resin. The resin was melt-spun at 320-350°C. The spinneret has 32 holes, the hole diameter is 0.5 mm, and the spinning speed is 600 m / min. After bundling the obtained long fibers, heat-stretch setting, crimping, and chopping at 150°C and 220°C respectively to obtain heat-stretched PPS short fibers with a length of 2-10 mm, and then mix them with 10-30 wt. Parts of polyphenylene sulfide fiber of the same length without hot drawing. The total amount of the above-mentioned short fibers is decomposed in a hydro-decomposer at a concentration of 0.5% by weight to make a slurry. Add the slurry to the slurry mixing tank, and at the same time add dod...

Embodiment 2

[0024] In this embodiment 2, the ratio of polyphenylene sulfide fiber / poly-p-phenylene terephthalamide fiber composite paper is:

[0025] Polyphenylene sulfide fiber (5-6mm) 60 parts by weight

[0026] .poly-p-phenylene terephthalamide fiber (5-6mm) 40 parts by weight

[0027] The polyphenylene sulfide fiber used is the same as Example 1. Used. The preparation method of poly-p-phenylene terephthalamide fiber is: according to the ratio of 1.0 mole of p-phenylene diamine and 1.01 mole of terephthaloyl chloride, the above-mentioned reactants are mixed in NMP / CaCl 2 The low-temperature solution polymerization reaction is carried out in the solvent system to generate the resin. Then the resin is dissolved in concentrated sulfuric acid to make lyotropic liquid crystals, and then dry-sprayed / wet-spun to make raw fibers. The spinneret has 1000 holes, the hole diameter is 0.07 mm, and the spinning speed is 300 m / min. Under the protection of nitrogen, the raw silk is hot-drawn at 35...

Embodiment 3

[0030] In this embodiment 3, the proportioning of polyphenylene sulfide fiber / carbon fiber composite paper is:

[0031] Polyphenylene sulfide fiber (5-6mm) 70 parts by weight

[0032] Carbon fiber (5-6mm) 30 parts by weight

[0033] The polyphenylene sulfide fiber used is the same as Example 1. The carbon fiber used is the above-mentioned general-purpose mesophase pitch short fiber. In order to increase the compatibility of carbon fiber and polyphenylene sulfide fiber, carbon fiber needs to be surface treated. The treatment method is a known liquid phase oxidation surface treatment method.

[0034] When producing composite paper, the polyphenylene sulfide fiber and carbon fiber are firstly decomposed in a hydraulic disintegrator at a concentration of 0.5% to make slurries (A) and (B), and added to the slurry mixing tank respectively. Surfactants and thickeners are then added as described in Example 1. The preparation method of composite paper is the same as that of Exampl...

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Abstract

The present invention discloses process of making high performance composite polyphenyl thioether paper and high performance composite polyphenyl thioether fiber paper. Through synthesizing polyphenyl thioether resin with sodium sulfide and p-dichlorobenzene as main materials; melt spinning the polyphenyl thioether resin into fibril; hot drafting the fibril, curling and cutting to obtain 2-10 mm long short fiber; and a wet paper making process with the short fiber, inorganic stuffing and other reinforcing fiber, high performance composite polyphenyl thioether fiber paper and composite paper are made. The high performance composite polyphenyl thioether paper and the high performance composite polyphenyl thioether fiber paper have high insulating performance or conducting performance, high strength, high fireproofing performance, high chemical corrosion resistance and other advantages, and may be applied widely.

Description

Technical field [0001] The invention belongs to the field of special paper production. Background technique [0002] Polyphenylene sulfide paper (PPS paper) has excellent chemical resistance and thermal stability at high temperature, and has flame retardancy, insulation, radiation resistance and good mechanical properties. Polyphenylene sulfide paper has a low thermal shrinkage rate, and the dimensional stability of the product is extremely good. Its limiting oxygen index is 35-45%, its flame retardancy is better than that of the famous Nomex paper, and its production cost is also lower than that of Nomex paper. Therefore, researchers from various countries have been devoting themselves to the research of producing polyphenylene sulfide paper and film. [0003] A main method of producing polyphenylene sulfide paper and film abroad is to extrude PPS pellets into sheets through an extruder, and then stretch them into paper and film through biaxial stretching (see US Patent 5...

Claims

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Application Information

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IPC IPC(8): D21H15/10D21H13/12D21H15/12D21H13/26D21H13/50
Inventor 代晓薇李勇余大海
Owner SICHUAN DEYANG CHEM
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