Surface-Modified Polyimide Fiber-Filled Ethylenepropylenediene Monomer Insulations for a Solid Rocket Motor: Processing, Morphology, and Properties

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• 作者：Zhongqiang Han ; Shengli Qi ; Wei Liu ; Enlin Han ; Zhanpeng Wu ; Dezhen Wu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：January 23, 2013
• 年：2013
• 卷：52
• 期：3
• 页码：1284-1290
• 全文大小：582K
• 年卷期：v.52,no.3(January 23, 2013)
• ISSN：1520-5045

文摘

Polyimide (PI) short fiber-filled ethylenepropylenediene monomer (EPDM) insulations for a solid rocket motor were fabricated by surface modification of PI short fibers in an alkaline aqueous solution and subsequently by mixing formulation of EPDM insulations on a two-roll mill. The effects of PI short-fiber surface modification and short-fiber content on the mechanical and ablative properties were investigated. The excellent mechanical and ablative properties of PI fiber-filled EPDM insulations were based on their unique fiber/polymer adhesive property because of the rough surface character of modified PI fibers. The microstructures of char layers of the insulations were also characterized by scanning electron microscopy and energy-dispersive spectrometry.