端羧基聚丁二烯丙烯腈弹性体材料力学性能研究
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摘要
研究了端羧基聚丁二烯丙烯腈/环氧树脂/三—1—(2—甲基氮丙啶)氧化膦体系中环氧基与羧基摩尔比(RE)、氮丙啶基与羧基摩尔比(RM)、固化促进剂和填料对材料力学性能的影响。结果表明:随RE的增加,材料的抗拉强度和初始模量提高,断裂伸长率降低;随RM的增加,材料抗拉强度和初始模量先增加后降低,当RM为2.0时,材料的抗拉强度和初始模量最大;当RE和RM相同时,随RE和RM的总量增加,材料的抗拉强度和初始模量提高,断裂伸长率降低;气相法和沉淀法中白炭黑对材料的补强效果优于实验用的其他填料;随填料含量的增加,材料的抗拉强度和初始模量均提高。
The influence of the molar ratio(RE) of epoxy group and carboxyl group, the molar ratio(RM) of aziridinyl group and carboxyl group, the curing accelerator and fillers in the carboxylterminated polybutadiene acrylonitrile/epoxy resin/tris-1-(2-methylaziridinyl) phosphine oxide system on the mechanical performance of the materials was investigated. The results show that with increase of RE,the tensile strength and initial modulus of the materials increase, the elongation at break decreases. With increase of RM, the tensile strength and initial modulus first increase and then decrease. When RM is 2.0, the tensile strength and initial modulus of the materials are the maximum. When RE and RM are the same, with increase of the total amount of RE and RM, the tensile strength and initial modulus of the materials increase,and the elongation at break decreases. The reinforcing effects of the silica aerogel in the gas phase method and the precipitation method are superior to those of the other fillers used in the experiment. With increase of the filler content, both the tensile strength and the initial modulus of the materials increase.
The influence of the molar ratio(RE) of epoxy group and carboxyl group, the molar ratio(RM) of aziridinyl group and carboxyl group, the curing accelerator and fillers in the carboxylterminated polybutadiene acrylonitrile/epoxy resin/tris-1-(2-methylaziridinyl) phosphine oxide system on the mechanical performance of the materials was investigated. The results show that with increase of RE,the tensile strength and initial modulus of the materials increase, the elongation at break decreases. With increase of RM, the tensile strength and initial modulus first increase and then decrease. When RM is 2.0, the tensile strength and initial modulus of the materials are the maximum. When RE and RM are the same, with increase of the total amount of RE and RM, the tensile strength and initial modulus of the materials increase,and the elongation at break decreases. The reinforcing effects of the silica aerogel in the gas phase method and the precipitation method are superior to those of the other fillers used in the experiment. With increase of the filler content, both the tensile strength and the initial modulus of the materials increase.
引文
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