01-08-2023 дата публикации
Номер: CN116516515A
Принадлежит:
The invention discloses a boron nitride modified polyphenylene sulfide fiber preparation method and a product thereof, and belongs to the technical field of special fiber manufacturing. The preparation method comprises the following steps: firstly modifying boron nitride powder by using a silane coupling agent, then mixing the modified boron nitride with polyphenylene sulfide resin to obtain modified resin, then carrying out melt spinning, and carrying out heat setting, slow cooling zone and cooling air curing to obtain molded fibers; the formed fibers are oiled and then wound, then two-stage drafting and shaping are carried out, then the fibers enter a crimping machine through a steam preheating box, then the fibers are subjected to relaxation heat shaping, and a finished product is obtained after cooling. The fiber-grade polyphenylene sulfide resin and the boron nitride are used as raw materials, the modified polyphenylene sulfide fiber is obtained through a melting-stretching process ...
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