PP/PP-g-MAH/GS–EDA纳米复合材料的制备及性能  

Preparation and Properties of PP/PP-g-MAH/GS–EDA Nanocomposites

作　　者：杨峰[1] 卞军[1] 何飞雄[1] 蔺海兰[1] 王刚[1] 周强[1] 李丝丝 胡文梅[1] 鲁云[2] 

机构地区：[1]西华大学材料科学与工程学院特种材料及制备技术重点实验室,成都610039 [2]千叶大学,日本千叶263-8522

出　　处：《工程塑料应用》2014年第9期10-15,共6页Engineering Plastics Application

基　　金：教育部春晖合作计划基金项目(Z2010097);四川省教育厅青年基金项目(11ZB005);西华大学特种材料与制备技术重点实验室开放研究基金项目(SZjj2012-020);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);汽车高性能材料及成形技术四川省高校重点实验室开放研究基金项目(szjj2014-054)

摘　　要：采用聚丙烯(PP)接枝马来酸酐(PP-g-MAH)为增容剂,通过母料–熔融共混法制备了乙二胺(EDA)共价功能化改性石墨烯片(GS)(GS–EDA)掺杂的PP纳米复合材料。傅立叶变换红外光谱、X射线衍射和扫描电子显微镜、力学性能和熔体流动速率(MFR)测试表明,EDA已成功接枝于氧化石墨烯的表面;共混过程中,PP-g-MAH的酐基与EDA的氨基发生反应改善了共混体系的界面相容性;GS–EDA在母料–熔融共混过程中均匀分散于基体中;随着GS–EDA含量的增加,复合材料的拉伸强度先增大后降低,当GS–EDA质量分数为0.5%时,复合材料的拉伸强度达到最大值,比PP/PP-g-MAH提高了18.9%,比纯PP提高了13.4%;随着GS–EDA含量的增加,复合材料的MFR先增大后降低,在GS–EDA质量分数为0.5%时达到最大值。Polypropylene（PP） nanocomposites filled with ethylenediamine（EDA） covalently functionalized graphene oxide sheets（GS）（GS-EDA） were prepared by masterbatch-melting blending with PP-g-MAH being used as a compatibilizer. The effects of covalent functionalization and the microstructure of the resultant PP/PP-g-MAH/GS-EDA nanocomposites were characterized by means of Fourier transform infrared spectroscopy,X-ray diffraction and Scanning electron microscope. The mechanical properties and melt flow rate（MFR） of the nanocomposites were also been investigated. These results indicate that EDA is successfully grafted onto GS. The reactions between the GS-EDA and PP-g-MAH have been taken place during the blending process,which improves effectively the interfacial interactions of blending systems. PP-g-MAH plays the role of compatibilizer. GS-EDA has been dispersed well in the matrix. The tensile strength of the nanocomposites increases firstly and then decreases with increasing GS-EDA content, and reaches a maximum value when the mass fraction of GS-EDA is 0.5%,which is improved 18.9%compared with PP/PP-g-MAH and 13.4% with pure PP;the MFR increases firstly,then decreases with increasing GS-EDA contents and achieves a maximum value at the 0.5%GS-EDA addition.

关 键 词：聚丙烯 石墨烯 纳米复合材料 界面 性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]