CeO_2-ZrO_2-聚苯乙烯杂化材料的制备与性能

Preparation and Performance of CeO_2-ZrO_2-Polystyrene Hybrid Material

以非离子表面活性剂P123为模板剂,ZrOCl2.8H2O和Ce(NO3)3.6H2O为原料,制备出CeO2-ZrO2介孔粒子。采用油酸对介孔CeO2-ZrO2粒子进行有机改性后,与苯乙烯原位聚合得到CeO2-ZrO2-聚苯乙烯杂化材料。该杂化材料的热分解温度达到417℃,与纯的聚苯乙烯分解温度相比有显著提高;当CeO2-ZrO2用量达到m(CeO2-ZrO2)/m(苯乙烯)=2/100时,杂化材料的拉伸强度达到最大值42.3MPa;当CeO2-ZrO2用量达到m(CeO2-ZrO2)/m(苯乙烯)=3/100时,杂化材料的缺口冲击强度达到最大值3.18 kJ/m2;有机分子进入CeO2-ZrO2介孔材料孔道内的方式和表面包覆作用,促进了无机粒子与基体间形成强有力的界面粘合,极大改善了聚苯乙烯的力学性能和热性能。

CeO2-ZrO2 mesoporous material was prepared by calcinations using block copolymers P123 as templates, zirconium chloride octahydrate （ZrOC12208H20） and cerium nitrate hexahydrate （Ce（NO3）3· 6H20） as raw materials. CeO2-ZrO2-polystyrene hybrid materials were prepared by in situ .polymerization of styrene and CeO2-ZrO2 mesoporous particles modified by oleic acid. The thermal decomposition temperature of hybrid materials reaches 417 12, higher than that of pure polystyrene. When the content of CeO2-ZrO2 is 2%, the tensile strength of hybrid materials reaches a maximum of 42.3MPa. And when the content of CeO2-ZrO2 is 3%, the impact strength of materials reaches a maximum of 3.18 kJ/m^2. The organic molecules coated the surface and filled in the pore canal of CeO2-ZrO2 mesoporous particles, enhancing the interface cohesive force between CeQ2-ZrO2 particles and polystyrene matrix, and greatly improving the mechanical property and heat resistance performance of polystyrene.