EDA-GO/CPE/PS纳米复合材料的制备及性能研究  

Preparation and performance of EDA-GO/CPE/PS nanocomposites

作　　者：胡文梅[1] 周强[1] 孙坤程 何飞雄[1] 卞军[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《弹性体》2015年第2期21-26,43,共7页China Elastomerics

基　　金：教育部春晖合作计划基金项目(Z2010097);国家级大学生创新创业训练计划项目(201410623006);汽车高性能材料及成型技术四川省高校重点实验室开放研究基金项目(szjj2014-054);西华大学"青年学者培养计划"基金(01201404);西华大学"西华杯"大学生创新基金(2014060;2014061)

摘　　要：选取氯化聚乙烯（CPE）弹性体为增韧剂,乙二胺接枝氧化石墨烯（EDA-GO）为纳米填料,经熔融共混法制备了CPE/聚苯乙烯树脂（PS）和EDA-GO/CPE/PS纳米复合材料。采用红外光谱、拉伸测试、冲击测试和熔融指数测试方法研究了EDA-GO的表面结构,复合材料的拉伸性能、冲击性能和熔融流动性能。结果表明,乙二胺（EDA）已成功接枝于氧化石墨烯（GO）的表面上;在CPE/PS复合材料中,材料的拉伸强度和冲击强度的变化规律与一般弹性体增韧塑料的规律一致;在EDA-GO/CPE/PS纳米复合材料中,随着EDA-GO含量的增加其拉伸强度、冲击强度、断裂伸长率和弹性模量都有先上升后下降的趋势,当EDA-GO质量分数为0.5%时,拉伸强度达最大值,较CPE/PS复合材料提高了38%,较纯PS提高了61%;在EDA-GO质量分数为0.75%时,其冲击强度和弹性模量最大,比CPE/PS复合材料冲击强度和弹性模量分别提高了18%和41%。因此,当EDA-GO的质量分数在0.5%-0.75%之间时,复合材料的综合力学性能最好。随着EDA-GO的加入,纳米复合材料的熔融指数先下降后上升。The EDA-GO/CPE/PS nanocomposites were prepared through melt blending method by using chlorinated polyethylene elastomer（CPE）as toughening agent and ethylenediamine grafted graphene oxide（EDA-GO）as nano-filler.The structure of EDA-GO,the tensile properties,impact properties and rheological properties of the nanocomposites were investigated by using fourier transform infrared spectroscopy,tensile,impact and rheological tests.The results showed that EDA was grafted successfully onto graphene oxide.In the CPE/PS composites,the changes of tensile strength and the impact strength was consistent with the general regularity of elastomeric toughening plastic.For EDA-GO/CPE/PS nanocomposites,the tensile strength,impact strength,elongation at break and elastic modulus increased firstly and then decreased with increasing EDA-GO content.The tensile strength reached a maximum value at the 0.5% EDA-GO content,which is improved by 38% compared with that of CPE/PS and by 61% with that of pure PS;while the impact strength and modulus reached a maximum value at the 0.75% EDA-GO content,which increased by 18% and by 41% respectively,compaared with CPE/PS composite.In summary,the best comprehensive mechanical performance could be obtained when the EDA-GO content was in the range of 0.5% -0.75% in the EDA-GO/CPE/PS nanocomposites.The melt flow rate increased firstly followed by decreasing with increasing of EDA-GO content.

关 键 词：石墨烯 聚苯乙烯 氯化聚乙烯 纳米复合材料 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]