The mechanical properties of polyurethane elastomer reinforced and toughened by CaSO4-whisker

Liu Ling; Kang Mao-qing; Zhang Zhi-xin; Wang Xin-kui

doi:10.1007/BF02838539

Journal of Wuhan University of Technology Materials Science Edition ›› 2002, Vol. 17 ›› Issue (3) : 50 -53. DOI: 10.1007/BF02838539

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The mechanical properties of polyurethane elastomer reinforced and toughened by CaSO₄-whisker

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Abstract

CaSO₄ whisker reinforcing and toughening mechanisms for polyurethane elastomer were studied. The effects of dispersity of CaSO₄ whisker and interfacial bonding state on reinforcement and toughness were discussed. The microanalyses showed that CaSO₄ whisker reinforcing mechanism for polyurethane elastomer mainly was load transferring and its toughening mechanism involved crack deflection and whisker pullout. The results indicated that composites with 5%–10% CaSO₄ whisker exhibited the best mechanical properties. Good bonding interface was formed between whisker and matrix after the surface of CaSO₄ whisker was treated by silane coupling agent. The fairly improved strength and toughness are attributed to the better interfacial bonding state.

Keywords

whiskers / polyurethane elastomer / reinforcement and toughness / composite

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Liu Ling, Kang Mao-qing, Zhang Zhi-xin, Wang Xin-kui. The mechanical properties of polyurethane elastomer reinforced and toughened by CaSO₄-whisker. Journal of Wuhan University of Technology Materials Science Edition, 2002, 17(3): 50-53 DOI:10.1007/BF02838539

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