聚丙烯酸酯/TiO2-SiO2纳米杂化材料性能的研究

采用具有核-壳结构的纳米TiO2-SjO2与热固性聚丙烯酸酯原位复合，通过溶胶-凝胶法制得了有机-无机纳米杂化材料，并对材料的结构和性能进行了表征。结果表明：聚丙烯酸酯基纳米SiO2包覆TiO2的有机-无机纳米杂化材料在无机组分质量分数低于8％时是透明的；随着TiO2-SiO2用量的增加，纳米杂化材料的附着力是先增后降，而热稳定性则是逐渐增加；拉伸强度和冲击强度随TiO2-SiO2用量的增加都是先增后降，当TiO2-SiO2质量分数为5．10％时，拉伸强度达到最大值，提高了25％；当TiO2-SiO2质量分数为3．45％时，无缺口冲击强度达到最大值，提高了27％。

Research on Property of Polyacrylics/TiO2-SiO2 Hybrid Nano-meter Composite

Polyacrylics/core-shell structure TiO2-SiO2 organic-inorganic hybrid materials were prepared by the network in-situ forming of TiO2-SiO2 with acrylic copolymer through sol-gel process.The structure and property of the hybrid nano-meter composites were characterized by means of TEM,SEM,TG-DSC.The results showed that the organic-inorganic hybrid material of polyacrylics/TiO2 encapsulated with nano-meter SiO2 was transparency when the mass fraction of the inorganic composition was lower than 8%;with the increase of the content of TiO2-SiO2,the adhesive force of the hybrid material increased first,and then decreased,while the thermal stability of the composite was improved gradually;the tensile strength and impact strength of the composite increased first,and then decreased with the increase of the content of TiO2-SiO2;when the mass fraction of TiO2-SiO2 was 5.10%,the tensile strength was the maximum,increased by 25%;when the mass fraction of TiO2-SiO2 was 3.45%,the non-notched impact strength was the maximum,increased by 27%.