Preparation method of high-performance polyphenylene sulfide fiber paper
A technology of polyphenylene sulfide fiber and polyphenylene sulfide, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, non-fibrous pulp addition, fiber raw material treatment, etc., can solve the problem of poor electrical breakdown resistance and folding resistance Poor performance, high price and other problems, to achieve the effect of high thermal stability, low cost and high strength
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[0017] The invention provides a kind of preparation method (abbreviation method) of high-performance polyphenylene sulfide fiber paper, and this method comprises the steps:
[0018] (1) Preparation of polyphenylene sulfide-based thermoplastic adhesive: mix polyphenylene sulfide resin with a solvent, and heat and stir in an inert gas environment to completely dissolve the polyphenylene sulfide resin to form a homogeneous solution. Then pour the homogeneous liquid into the coagulation bath for rapid solidification, and then pulverize it to obtain a solid powder that is a thermoplastic adhesive;
[0019] The solvent is at least one of benzophenone, caprolactam, benzoin, diphenylsulfone, dibutyl sebacate, dibutyl phthalate, dioctyl phthalate or dioctyl isophthalate One; the heating temperature is 250-257°C; the coagulation bath is one of liquid nitrogen, ice water (0-5°C), and air (18-25°C);
[0020] (2) Prepare papermaking slurry: disperse the dispersant in water, stir and disso...
Embodiment 1
[0035] (1) Weigh the PPS powder, benzophenone and dibutyl phthalate in the three-necked flask according to the mass fractions of 24%, 61% and 15% respectively, and turn on the heating to 255-257°C , turn on the mechanical stirring for 10-12min to a homogeneous solution, let it stand for 10-12min until there are no obvious bubbles, then quickly pour it into liquid nitrogen to cool, grind and crush it with a pulverizer to obtain a solidified homogeneous liquid solidified powder, the specific parameters are 24000r / min, 10s, operate three times with an interval of 5s;
[0036] (2) Weigh 1.6g of PEO and disperse it in 2L of water, add 2g of PPS short fiber (5-8cm) and 2g of homogeneous liquid solidified powder, stir evenly, pour it into a paper machine, and filter it into a size of diameter 20cm fiber cake, and put into blast oven 60 ℃ and dry for 6 hours;
[0037] (3) Put the fiber cake into a hot press machine at 220°C. After heat treatment for 45s, hot press at 18MPa for 60s, t...
Embodiment 2
[0039] (1) Weigh PPS powder, benzophenone and dibutyl phthalate respectively in a three-necked flask according to the mass fraction of 24%, 61% and 15% respectively, turn on the heating and heat up to 255-257°C, turn on Stir mechanically for 10-12min until it reaches a homogeneous solution, then let it stand for 10-12min until there are no obvious bubbles, then quickly pour it into liquid nitrogen to cool, grind and crush it with a pulverizer to obtain a solidified homogeneous liquid solidified powder, the specific parameter is 24000r / min, 10s, operate three times with an interval of 5s;
[0040] (2) Weigh 1.6g of PEO and disperse it in 2L of water, add 2g of PPS short fiber (5-8cm) and 6g of homogeneous liquid solidified powder, stir evenly, pour it into a paper machine, and filter it into a size of diameter 20cm fiber cake, and put into blast oven 60 ℃ and dry for 6 hours;
[0041] (3) Put the fiber cake into a hot press machine at 220°C. After heat treatment for 30s, heat...
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