Production method of high-strength high-modulus PMIA super-short fiber

The invention discloses a preparation method of high-strength high-modulus PMIA super-short fiber, comprising: m-phthaloyl chloride and metaphenylene diamine are adopted in a system of which the sulphonamide compound is an organic solvent to polymerize solution to obtain m-phenyleneisophthalamide (P...

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Bibliographische Detailangaben
Hauptverfasser:	SONG XIQUAN, GAO DONG, WANG XUE, WANG YINCHAO, SONG CUIYAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention discloses a preparation method of high-strength high-modulus PMIA super-short fiber, comprising: m-phthaloyl chloride and metaphenylene diamine are adopted in a system of which the sulphonamide compound is an organic solvent to polymerize solution to obtain m-phenyleneisophthalamide (PMIA) solution comprising polymetaphenylene isophthamide as a repeating unit; performing neutralization reaction by calcium oxide or calcium hydroxide to generate hydrochloric acid so as to obtain spinning solution, wherein the logarithmic viscosity number of the spinning solution is 3-6; high-strength high-modulus PMIA super-short fiber of which the length is 0.5-20 mm is prepared by wet spinning, cleaning, heat treatment, winding, cutting off and packaging. The strength and the modulus of the PMIA super-short fiber are greatly improved compared with the existing like products.