Study on Properties of Epoxy Resin by Double Toughening Technique
In this paper,the toughness of epoxy resin was improved by using polyether amines with different molecular weights containing ether bonds and double toughening with toughening particles containing core-shell structure.The effect of different types of core-shell structure on the toughening effect of resin was studied.In addition,the addition ratio of H120 toughening particles and the compounding ratio of polyether amine D2000/D230 were optimized.The results showed that the toughening effect of the nuclear layer was in the order of polybutyl acrylate,polybutadiene-styrene and polysiloxane.The optimal addition ratio of M120 was 15％,and the optimal compounding ratio of polyether amine complex curing agent D2000∶D230 was 4∶6.The epoxy resin obtained through the above-mentioned technology and formulation meets the requirements of LNG carrier.
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