Study on Preparation of Hard Elastic Polypropylene Fibers

Abstract:

Polypropylene pre-oriented multifilament were made by melt spinning with fast winding, and then hard elastic polypropylene fibers were made followed by annealing treatment under some conditions. The effects of the conditions of melt spinning and annealing process on the elasticity of polypropylene fibers were studied. The structure and property of hard elastic polypropylene fibers were analyzed by DSC,WAXD,SAXS and Sound velocity anisotropy. The results showed that the hard elasticity of annealed fibers increased with the improving of speed of winding, and the elasticity also increased with the improving of annealing temperature and extension of annealing time, and the elastic recovery rate of PP multifilament can be as high as 93.6%. The crystal phase of unannealed and annealed PP fibers did not change. Annealing leaded to form perfectly the characteristic crystalline structure of crystals of being perpendicular to fiber axis.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 414-419
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.414
• Online since: January 2013
• Authors: Si Deng Zhang, Xu Zhen Zhang, Bin Sun, Long Chen, Zhi Yan Ma, Mei Fang Zhu
• Keywords: Annealing, Elastic Recovery Rate, Hard Elasticity, Melt Spinning, Polypropylene Fiber

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