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Study on rubber toughened epoxy resin potting materials

GONG Da-jun,WEI Bo-rong,LI Wang-bo,SU Hang,ZHANG Ke-ke (Polymer Institute of Northwestern Polytechnical University,Xi' an,Shanxi 710072,China)  
In this paper,we choose carboxyl nitrile rubber,polysulfide rubber as tougheners and evaluate the effect of toughening epoxy resin potting material through impact strength,bendt strength and tensile shearing strength.The result showed that the toughness of every toughened formula increased with different degree in comparison with the control group.Epoxy resin potting material toughened with liquid polysulfide rubber exhibits good anti-impact performance and anti-bendt performance;epoxy resin potting material toughened with carboxyl nitrile rubber exhibits good tensile shear performance.
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