Study on Preparation and Property of High Thermal Oxidation Stability PPS/SiO₂ Fiber

Abstract:

PPS/SiO₂ composite was studied to enhance the thermal oxidation stability of PPS. In order to improve the dispersity of SiO₂ in PPS matrix, the SiO₂ was modified by silane coupling agent, KH-570. The fractured surface morphologies, thermal properties and rheological property of PPS/SiO₂ composite were researched. The high thermal oxidation stability PPS/SiO₂ fibers were prepared by melt spinning. The thermal ageing treatment was carried out, and the strength and retention strength, before and after ageing treatment, of two kinds of fibers (PPS fibers and PPS/SiO₂ fibers) were compared. The results of SEM showed the good dispersity of the modified SiO₂ in PPS matrix. After adding modified SiO₂, the initial decomposition temperature increased. At the same time, the fiber strength and retention strength were improved, which can be found by comparing. Compared with pure PPS, after adding 1.0 wt%, which was proved to be the optimum dosage by the research, modified SiO₂ into PPS, the initial decomposition temperature was increased by 15.3°C, the retention strength was increased from 60.3% to 85.1% after ageing treat.

• Periodical: Materials Science Forum (Volume 789)
• Pages: 249-254
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.789.249
• Online since: April 2014
• Authors: Si Meng, Ze Xu Hu, Xue Yu Xing, Qiu Xu Lu, Zhe Zhou, Mei Fang Zhu*
• Keywords: Melt Spinning, Polyphenylene Sulfide, Silicon Dioxide, Thermal Oxidation Stability

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