The Mechanical Properties of Polyurethane Elastomer Reinforced and Toughened By CaSO_4-Whisker  

作　　者：刘玲 

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2002年第3期50-53,共4页武汉理工大学学报（材料科学英文版）

基　　金：FundedbytheNaturalScienceFoundationofShanxiProvince (No .9910 2 4 )

摘　　要：CaSO 4 whisker reinforcing and toughening mechanisms for polyurethane elastomer were studied. The effects of dispersity of CaSO 4 whisker and interfacial bonding state on reinforcement and toughness were discussed.The microanalyses showed that CaSO 4 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% CaSO 4 whisker exhibited the best mechanical properties. Good bonding interface was formed between whisker and matrix after the surface of CaSO 4 whisker was treated by silane coupling agent.The fairly improved strength and toughness are attributed to the better interfacial bonding state.CaSO 4 whisker reinforcing and toughening mechanisms for polyurethane elastomer were studied. The effects of dispersity of CaSO 4 whisker and interfacial bonding state on reinforcement and toughness were discussed.The microanalyses showed that CaSO 4 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% CaSO 4 whisker exhibited the best mechanical properties. Good bonding interface was formed between whisker and matrix after the surface of CaSO 4 whisker was treated by silane coupling agent.The fairly improved strength and toughness are attributed to the better interfacial bonding state.

关 键 词：WHISKERS polyurethane elastomer reinforcement and toughness COMPOSITE 

分 类 号：TQ334[化学工程—橡胶工业]