School of Material Science and Engineering，Beijing Institute of Fashion Technology，Beijing 100029
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DOI:
10.7502/j.issn.1674-3962.2014.11.05
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Abstract:
The polyphenylene sulfide/polypropylene (PPS/PP) sea-island blend fibers were prepared from PPS and PP by blended melt spinning process. PPS superfine fibers were prepared by removing off PP matrix phase from the blend fiber in presence of xylene.The effect of composition ratio,drawing ratio on the phase structure,linear density,crystallization and mechanical properties of the blend fibers were studied.The results showed that the average diameter of PPS superfine fiber rose to 408nm from 228nm when the composition ratio of PPS/PP increased to 60/40 from 30/70.The phase transition began to appear when the composition ratio of PPS/PP more than 60/40.PP improved the crystallization ability of PPS, the fiber linear density became larger, the crystallinity of PPS and the mechanical properties of fibers was decreased, with the PPS/PP blend composition ratio increased.The fiber linear density became small,the fracture strength of fiber reinforced,crystallinity of PPS increased,with the drawing ratio improved.The drawing ratio of PPS/PP blend fiber was 2.0 to 3.0 times when the spinning speed was between in 280 and 350 m/min.The thermal stability of PPS superfine fiber declined, but that did not affect the high temperature properties of PPS.