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.
参考文献
| [1] | John V Milewski .Whiskers and Short Fiber Technology[J].Polymer Composites,1992,13(03):223-236. |
| [2] | Benli S.;Pekel F.;Ozkar S.;Yilmazer U. .Effect of fillers on thermal and mechanical properties of polyurethane elastomer[J].Journal of Applied Polymer Science,1998(7):1057-1065. |
| [3] | N Yin;M Q Kang;L M Zhang .Reinforcement of Carbon Fiber on Polyurethane Elastomer[J].Syn Rubber Ind,1998,21(01):42-44. |
| [4] | S L Cooper;A V Tobolsky .Properties of Linear Elastomeric Polyurethanes[J].Journal OF APPLIED POLYMER SCIENCE,1966,10:1837-1844. |
| [5] | D M Schuster;E Scala .The Mechanical Interaction of Sapphire whiskers with a Bi-Refringent Matrix[R].Report,1963. |
| [6] | K S Mazdiyasni.Fiber Reinforced Ceramic Composites[M].USA:Noyes Publications,1990:321. |
| [7] | R J Zdrahala;R M Gerkin;S L Hager;F E Critchfield .Polyether-Based Thermoplastic Polyurethanes(Ⅰ)Effect of the Hard-Segment Content[J].Journal of Applied Polymer Science,1979(24):2041-2050. |
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