介孔分子筛的添加对PE基复合材料性能的影响

Effect of mesoporous molecular sieve on properties of PE composite

用熔融共混法制备出聚乙烯基纳米复合材料。研究了填充介孔分子筛MCM-41(带模板和无模板)颗粒以及不同的填充颗粒含量对复合材料拉伸性能的影响。结果表明,这种具有独特有机-无机复合结构的纳米介孔分子筛MCM-41(带模板)直接作填料,能与基体形成新型网络复合结构。因此,在MCM-41(带模板)的质量分数为2.5%时,复合材料的拉伸强度达到最大值,比基体树脂提高43.5%,弹性模量提高了50%;用MCM-41(无模板)作填料,在其质量分数为2.5%时,复合材料的拉伸强度达到最大值,比基体树脂提高52%,弹性模量提高了106%。

Polyethylene （PE） nano-composites were prepared with melt blending process. The influences of the nano- mesoporous molecular sieve MCM-41 （with and without template） and its filling content on tensile properties of the nano-composite were investigated. The results indicate that directly using MCM-41 （with template） as filler can form with the PE matrix a novel nano-network composite structure due to its unique organic-inorganic composite structure. When MCM-41 （with template） reaches 2.5% by mass fraction, the tensile strength of the nano-composite come up to its maximum; compared with the matrix resin, its tensile strength increases by 43.5% and elastic modulus rises by 50%. In the Case of adding 2.5 wt% MCM-41 （without template）, the tensile strength of the nano-composite attains it maximum; and its elastic modulus increases by 106% compared the nano-composite＇s tensile strength increases by 52% with the matrix resin.