首页|The Mechanical Properties of Polyurethane Elastomer Reinforced and Toughened By CaSO4-Whisker
The Mechanical Properties of Polyurethane Elastomer Reinforced and Toughened By CaSO4-Whisker
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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.
whiskerspolyurethane elastomerreinforcement and toughnesscomposite
LIU Ling、KANG Mao-qing、ZHANG Zhi-xin、WANG Xin-kui
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Shanxi Institute of Coal Chemistry, Chinese Academy of Science
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