自制聚甲基丙烯酸甲酯(PMMA)微球和氧化石墨烯(GO),将GO包裹在PMMA微球上,用包裹了GO的PMMA微球改性环氧树脂,包裹在PMMA微球上的GO更容易在环氧树脂中分散,能显著提高环氧树脂的导热性;利用包裹GO的PMMA微球制备的环氧树脂复合材料拉伸强度和拉伸模量在GO质量分数为0.5%时具有最大值,弯曲强度和弯曲模量随GO含量的增加而减小。
PMMA microspheres and graphene oxide were self maded,graphene oxide was wrapped in PMMA microspheres,PMMA microspheres wrapped by graphene oxide was used to modify epoxy resin.The results showed that the graphene oxide wrapped PMMA microspheres more easily dispersed in the epoxy resin,the thermal conductivity of resin was remarkably improved.The tensile strength and tensile modulus of resin modified by PMMA had the maximum value when the mass fraction of graphene oxide content was 0.5%,bending strength and flexural modulus were reduced with increasing the content of graphene oxide.
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基金资助
2016年重庆市教委科学技术研究项目(KJ1603601);国家重点基础研究发展计划资助项目(2009CB724505-1)
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