高岭土/白炭黑并用填充天然橡胶复合材料的性能  

Properties of Natural Rubber Composites with Kaolin and Silica Hybrid Filler

作　　者：张玉德[1] 刘钦甫[2] 李和平[3] 陆银平[1] 张乾[1] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454000 [2]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [3]北京橡胶工业研究设计院,北京100039

出　　处：《高分子材料科学与工程》2011年第3期87-91,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金重点项目(51034006);河南理工大学博士基金(648273)

摘　　要：以高岭土和白炭黑作为增强剂,采用熔融共混法制备了一系列的天然橡胶(NR)复合材料,并对其微观结构、气体阻隔性能和力学性能进行了表征。结果表明,改性高岭土(MK)以片层结构,白炭黑(PS)以球状结构,均匀分散于NR基体之中;MK与PS单独填充NR时,随着MK填充量的增加,NR复合材料的气体阻隔性能逐渐提高,而且MK的增强和阻隔作用都优于PS;MK与PS并用填充时,混合物填充NR复合材料的阻隔性能、拉伸模量和拉伸强度都优于MK、PS单独填充的NR复合材料,填料并用更有效地改善了NR复合材料的气体阻隔性能和力学性能。A series of natural rubber（NR） composites with modified kaolin（MK） and precipitated silica（PS） were prepared by melt blending,and their microstructure,gas barrier properties and mechanical properties were characterized.The results show that flake-like kaolinite and spherical silica particles are evenly dispersed in the natural rubber matrix.When NR is filled by MK or PS separately,the gas barrier properties of NR composites are improved gradually with the increasing of MK content,and MK is superior to PS in the barrier and reinforcing capability.When NR is filled by MK and PS blends,their gas barrier properties,tensile strength and tensile modulus all surpass that of NR composites filled by MK or PS separately,and MK/PS hybrid filler further improves the gas barrier properties and mechanical properties of NR composites.

关 键 词：高岭土 白炭黑 天然橡胶复合材料 力学性能 阻隔性能 

分 类 号：TQ330.38[化学工程—橡胶工业]