Triple-arc-shaped spinneret was used in melt-spinning,and the hollow structure was formed in this process.C-shaped and round solid fibers could also be obtained when the parameters were changed.

• 结果表明:树脂提纯后可纺性能大大提高,只有在适当的熔纺条件下圆弧狭缝式喷丝板才能纺出中空结构的酚醛纤维,改变的熔纺参数,还可以纺出C形和实心圆形另外两种截面的酚醛纤维。