功能化纳米氧化石墨烯/POE-g-MAH/聚苯乙烯复合材料的制备与性能  

Preparation and property of functionalized nano graphene oxide/POE-g-MAH/polystyrene composites

作　　者：周强[1] 卞军[1] 王刚[1] 何飞雄[1] 蔺海兰[1] 

机构地区：[1]西华大学材料科学与工程学院,成都610039

出　　处：《复合材料学报》2016年第2期240-248,共9页Acta Materiae Compositae Sinica

基　　金：国家级大学生创新创业训练计划(201410623006);特种材料及制备技术四川省高校重点实验室开放研究基金(szjj2015-084;szjj2015-086);西华大学"青年学者培养计划"基金(01201404)

摘　　要：利用硅烷偶联剂(APTES)对氧化石墨烯(GO)进行功能化改性,在不同的试验条件下制备了3种硅烷偶联剂功能化GO(APTES-g-GO)纳米填料,并经熔融共混制备了APTES-g-GO填充改性的聚苯乙烯(PS)复合材料。为了改善复合材料的界面作用,采用马来酸酐接枝乙烯-辛烯共聚物(POE-g-MAH)为增容剂。分别采用FTIR、XRD、TG、SEM以及拉伸和冲击测试对填料和纳米APTES-g-GO/POE-g-MAH/PS复合材料的结构和性能进行了表征和测试。结果表明:APTES已成功接枝于GO的表面上。接枝过程中,APTES对GO有一定的剥离和还原作用。随着填料含量的增加,纳米APTES-g-GO/POE-g-MAH/PS复合材料拉伸强度和冲击强度均先上升后下降。当填料与基体质量比为0.75%时,3种复合材料的拉伸强度和冲击强度都达到最大值,其中纳米ASGO/POE-g-MAH/PS复合材料的综合性能最好,其拉伸强度和冲击强度比POE-g-MAH/PS分别提高了19%和31%。共混过程中,APTES-g-GO与POE-g-MAH之间的反应改善了纳米APTES-g-GO/POE-g-MAH/PS复合材料的界面相互作用。APTES-g-GO均匀分散于复合材料中,它的加入提高了复合材料的热稳定性能。添加ASGO填料的复合材料热稳定性能提高最为明显,含0.75%AS-GO的纳米AS-GO/POE-g-MAH/PS复合材料的最大失重温度比POE-g-MAH/PS提高了7℃。Silane coupling agent（APTES）was used as functional monomer to modify oxidation graphene（GO）and three kinds of silane coupling agent modification of GO（APTES-g-GO）nano-fillers have been prepared firstly under different experimental conditions.Then polystyrene（PS）composites filled with APTES-g-GO were fabricated by melt blending.To improve the compatibility of the blends,maleic anhydride grafted polyolefin（POE-g-MAH）was used as a compatibilizer.The morphology and properties of nano-fillers and the resultant nano APTES-g-GO/POEg-MAH/PS composites have been characterized in detail by means of FTIR,XRD,TG,SEM,tensile and impact tests.The results indicate that APTES was successfully grafted onto the surface of GO.APTES shows some exfoliation and reduction effects to GO.Tensile strength and impact strength of the nano APTES-g-GO/POE-g-MAH/PS composites increase firstly,followed by decreasing with increasing nano-fillers content,and reach a maximum value at the 0.75% mass ratio of nano-filler content.Among them the nano AS-GO/POE-g-MAH/PS composites achieve the best comprehensive performance.The tensile strength and impact strength increase by 19% and 31%,respectively,compared with those of POE-g-MAH/PS.The reactions between the APTES-g-GO and POE-g-MAH take place during the blending process,which improve effectively the interfacial interactions of blending systems.APTES-g-GO disperse well in the composites.APTES-g-GO improve the thermal stability of composites,especially for the composite filled by AS-GO.The maximum thermal loss temperature of nano AS-GO/POE-g-MAH/PS composite with 0.75% mass ratio of AS-GO increases by 7 ℃ compared with that of POE-g-MAH/PS.

关 键 词：聚苯乙烯 石墨烯 功能化 复合材料 热性能 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]