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    • 6. 发明授权
    • Process for producing aromatic polyester fiber
    • 芳香族聚酯纤维生产工艺
    • US4865790A
    • 1989-09-12
    • US304864
    • 1989-01-31
    • Hiroaki SugimotoKazuo HayatsuToshiyuki KobashiSeiji TakaoJun Takagi
    • Hiroaki SugimotoKazuo HayatsuToshiyuki KobashiSeiji TakaoJun Takagi
    • D01F6/62D06M11/46D06M11/56
    • D06M11/46D01F6/62D06M11/56
    • In a process for producing an aromatic polyester fiber by heat-treating a fiber obtained by melt-spinning an aromatic polyester exhibiting anisotropy in its molten state, an aromatic polyester fiber having high strength and high modulus of elasticity can be produced with suppressed fusion between single filaments during the heat treatment by (a) subjecting the fiber obtained by melt spinning to heat treatment in an organic liquid heating medium or (b) adhering to the fiber obtained by melt spinning at least one member selected from the group consisting of suspensions having a concentration of 0.05 to 20% by weight of organic polymer powders having a melting point or a softening temperature higher than the heat treatment temperature, and suspensions having a concentration of 0.1 to 20% by weight of barium sulfate powder or barium titanate powder, and then subjecting the resulting fiber to heat treatment.
    • 在通过对在其熔融状态下显示各向异性的芳族聚酯进行熔融纺丝而获得的纤维进行热处理的方法中,可以制造具有高强度和高弹性模量的芳族聚酯纤维, 通过(a)将通过熔融纺丝获得的纤维在有机液体加热介质中进行热处理,或(b)粘附到通过熔融纺丝获得的纤维,所述纤维通过熔融纺丝而选自下组中的至少一种: 浓度为0.05〜20重量%的熔点或软化温度高于热处理温度的有机聚合物粉末,以及浓度为0.1〜20重量%的硫酸钡粉末或钛酸钡粉末的悬浮液,然后 对所得纤维进行热处理。