CAJ | 학술논문

采用原位法制备不同含量还原氧化石墨烯( rGO)/环氧树脂( EP)复合材料. 研究rGO含量对rGO/EP复合材料力学性能和形状记忆性能的影响. 结果表明,通过溶剂热还原,填充到环氧树脂单体中的GO原位还原成rGO,并可均匀分散在EP基体中. 该复合材料的拉伸强度﹑弹性模量和储能模量均随rGO含量增加呈先升后降态势,在w(rGO)=0. 2%(相对于环氧树脂的质量而言)时相对最大;随着rGO含量增加,复合材料的玻璃化转变温度随之增加. 当w( rGO)=0. 6 %时,玻璃化转变温度Tg相对纯环氧树脂提高约45 ℃,达到102 ℃,热稳定性显著提高. 相应的复合材料具有良好的形状记忆性能,变形可以完全恢复,且rGO/EP复合材料相对纯环氧树脂具有更高的形状固定率与形状恢复温度.
채용원위법제비불동함량환원양화석묵희( rGO)/배양수지( EP)복합재료. 연구rGO함량대rGO/EP복합재료역학성능화형상기억성능적영향. 결과표명,통과용제열환원,전충도배양수지단체중적GO원위환원성rGO,병가균균분산재EP기체중. 해복합재료적랍신강도﹑탄성모량화저능모량균수rGO함량증가정선승후강태세,재w(rGO)=0. 2%(상대우배양수지적질량이언)시상대최대;수착rGO함량증가,복합재료적파리화전변온도수지증가. 당w( rGO)=0. 6 %시,파리화전변온도Tg상대순배양수지제고약45 ℃,체도102 ℃,열은정성현저제고. 상응적복합재료구유량호적형상기억성능,변형가이완전회복,차rGO/EP복합재료상대순배양수지구유경고적형상고정솔여형상회복온도.
Novel shape memory composites based on reduced graphene oxide ( rGO)-reinforced epoxy resin ( EP) composites were prepared by a solution mixing and solvothermal reduction method. The effect of rGO content on the mechanical and shape memory properties of the rGO/EP composites was investigated. Results showed that the GO uniformly dispersed in the EP matrix was reduced in-situ to rGO by the solvothermal reduction. The composite had the maximum tensile strength and modulus when the mass fraction of rGO was 0. 2%. When the mass fraction of rGO was 0. 6%, the glass transition temperature (Tg) of the composite was 102 ℃, 45℃ higher than that of pure EP, and the corresponding composite has a good shape memory property with its deform-ation fully recovered.