MCM-41 填加量与偶联修饰对复合材料拉伸性能的影响

通过溶液共混法制备出MCM-41/ 环氧树脂、偶联修饰MCM-41/ 环氧树脂纳米复合材料。研究了填充MCM-41 介孔分子筛颗粒的偶联修饰以及不同的填充颗粒含量对分散性和复合材料拉伸性能的影响。结果表明: 在MCM-41/ 环氧树脂纳米复合材料中, MCM-41 仍保持着长程有序的孔道结构。修饰后的MCM-41 变成亲油性, 有利于增强颗粒与环氧树脂间的界面结合和纳米网络结构的形成, 使MCM-41 颗粒更能均匀分散在聚合物基体中, 提高复合材料的拉伸性能。修饰后的MCM-41 填加量为2.5 %(质量分数) 时, 拉伸强度达到最大值,比基体树脂提高99.2 % , 杨氏模量提高了110 %。

EFFECT OF THE CONTENT OF MCM-41 AND COUPLINGMODIFICATION ON COMPOSITE TENSILE PROPERTIES

MCM-41/ epoxy resin and modified MCM-41/ epoxy resin nanocomposites were prepared by solutionblending. The influences of coupling agent modification and the content of the particulates on the disperse propertiesand mechanical properties were investigated. The small angle X-ray diff raction ( XRD) of MCM-41/ epoxy resinshows that the nanO2porous MCM-41 channels are not dest royed in the composite. Because modified MCM-41 canst rengthen the links between particle and mat rix , and modified MCM-41 particle can disperse evenly in the mat rix ,the tensile properties of the composite are the highest when the amount of the modified MCM-41 particle is 2.5 %(mass f raction) . Compared with the mat rix , the tensile st rength and the Young’s modulus of the composites are improved by 99.2 % and 110 % respectively.