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超支化聚硼酸酯修饰氧化石墨烯对苯并噁嗪树脂的改性作用

Modification of graphene oxide-hyperbrancehd polyborate on benzoxazine resin

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【作者】 许培俊丛培良高昭杜敏王志鹏

【Author】 Xu Peijun;Cong Peiliang;Gao Zhao;Du Min;Wang Zhipeng;School of Materials Science and Engineering,Chang’an University;Engineering Research Center of Transportation Materials,Ministry of Education,Chang’an University;

【机构】 长安大学材料科学与工程学院长安大学交通铺面材料教育部工程研究中心

【摘要】 氧化石墨烯(GO)具有良好的耐热性和力学性能,可用于制备树脂基纳米复合材料,对树脂具有独特的改性效果,但分散性差却限制了GO对树脂基复合材料更好的改性效果。采用超支化聚硼酸酯(HBPB)与GO接枝得到氧化石墨烯-超支化聚硼酸酯(GO-HBPB),并将其用于双环苯并噁嗪树脂(B-BOZ)改性,不仅可解决GO分散性差的问题,还可利用GO-HBPB优异的耐热性,超支化结构,以及大量酚羟基端基对B-BOZ树脂噁嗪环的催化开环作用,使得GO-HBPB改性B-BOZ树脂(BOZ-GO-HBPB)具有比B-BOZ树脂更低的固化温度,在800℃(N2)下高达58.7%的残碳率,以及粗糙而柔韧的树脂浇注体断面形貌。

【Abstract】 High performance benzoxazine resin was obtained by introducing hyperbranched polyborate modified graphene oxide(GO-HBPB)into bis-benzoxazine(B-BOZ)resin to overcome the defects such as high curing temperature,low char yield and poor toughness of B-BOZ resin.By virtue of the massive functional end groups,hyperbranched and rigid boron-containing structures of GO-HBPB,not only the curing temperature and the exotherm of B-BOZ resin were decreased, but also the thermal resistance,especially char yield of B-BOZ resin can be greatly improved.Moreover,with the toughening effect of GO-HBPB,rougher surface and more plastic deformation were observed in the fractographes of GO-HBPB modified B-BOZ castings,suggesting that the impact specimens broke more yielding than neat B-BOZ resin.

【基金】 中央高校基本科研业务费专项资金资助(CHD2011JC184);国家自然科学基金资助(51308063);中国博士后科学基金资助项目(2013M530413)
  • 【文献出处】 化工新型材料 ,New Chemical Materials , 编辑部邮箱 ,2014年02期
  • 【分类号】O613.71;TQ323.1
  • 【被引频次】4
  • 【下载频次】338
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