Abstract
In order to improve the spinnability of phenolic (PF) resin, a small amount of polybutylene succinate (PBS) was added during the melt spinning process. It was found that the spinning speed can be increased to 400m/min with only 1 wt% PBS. The glass transition temperature of the PF/PBS as-spun fiber decreased with PBS content, and the PBS melting endotherm peak disappeared after blending with PF. Crosslinking was formed after curing, which can greatly increase strength of PF fibers. The strength of PF/PBS fiber can reach 2.01 cN/dtex, which is 30% higher than pure PF fiber.
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