Full-para-polyfiber amide paper, and its preparing method and use

Abstract

The invention relates to preparation technique of full para position Fanglun amide paper which includes: adding in water para position aromatic amide short fiber, para position aromatic poly-amide cream, disperse assistant, acquire cream material by dispersing the raw material; the cream confection on net; dehydrate, squeezing, drying; dipping in para position aromatic poly-amide solution to get fiber paper, processing with heat or cold pressing, the coagulation liquor shapes, washing off dissolvent, dehydrating, squeezing and drying to get para position Fanglun amide paper. The paper is of high stretch resistance tearing resistance, abrading resistance and fine flexibility, can be applied as structure material, insulation material for power generator, motor, and potential transformer, honeycomb material, heat insulation material, fire retardant material, filter material or electric material; it is of low wet heat expanding factor, fine controllable dielectric properties, fine heat stability and laser processability, can be applied to produce special purpose paper for high temperature or layer pressing plate of satellite communication line and high speed transmitting circuit.

Description

technical field

[0001] The invention relates to papermaking technology, in particular to a full para-aramid paper and its preparation method and application. Background technique

[0002] Compared with other conventional fiber papers made of aramid materials, aramid paper has the advantages of high strength, high modulus, excellent dielectric properties, excellent solvent resistance and thermal dimensional stability, and light weight. It can be widely used in aerospace, transportation, electronics and other industries as structural materials, insulating materials, wave-transmitting and filtering materials. The preparation method of such synthetic fiber paper is disclosed in Japanese Laid-Open Patent Application No. Hei 1

[1989] -281790. Aramid fiber paper made of organic resin binder and p-aramid fiber such as Composition of p-phenylene terephthalamide / oxydiphenylene diamine copolymer fibers (Technora, Teijin Ltd.) and poly-p-phenylene terephthalami...