摘要
分别以正硅酸乙酯、硅溶胶、纳米二氧化硅(SiO2)粉体为前驱体,通过原位聚合方法制备了不同种类的SiO2/UP(不饱和聚酯)复合树脂。采用模压成型方法,制备了SiO2/UP原位混杂复合材料,采用静态力学和动态力学方法,研究了不同种类的SiO2/UP原位混杂复合材料的力学性能和流变性能。结果表明,在3种不同SiO2/UP原位混杂复合材料中,纳米SiO2粉体(质量分数为3%)/UP原位混杂复合材料的综合力学性能最好;正硅酸乙酯/UP原位混杂复合材料耐水性能最好;纳米SiO2粉体/UP原位混杂复合材料和正硅酸乙酯/UP原位混杂复合材料适合于注塑、挤出等快速成型工艺,硅溶胶/UP原位混杂复合材料适合于模塑加工工艺。
On the premise of the tetraethyl orthosilicate, silicon sol and the nano-SiO2 power respectively, a series of unsaturated resins containing nano-SiO2 groups were synthe- sized by in-situ polymerization. The nano-SiO2/UP in-situ hybrid composite materials were prepared by molding technology. The effects of different kinds of nano-SiO2/UP in-situ hybrid composites on mechanical and rheological properties were studied by static mechanical methods and dynamic mechanical analysis （DMA）. The results show that the mechanical properties of nano-SiO2 power/UP in-situ hybrid composite is the best and water resistant performance of tetraethyl orthosilicate/UP in-situ hybrid composite is best in the three SiO2/ UP in-situ hybrid composite materials prepared. The rapid-prototyping processes are suitable to nano-SiO2 power/UP in-situ hybrid composite materials and tetraethyl orthosilicate/UP in-situ hybrid composite materials, such as injection molding and extrusion process, while molding process fits for silicon sol/UP in-situ hybrid composite materials.
出处
《现代塑料加工应用》
CAS
北大核心
2009年第2期9-12,共4页
Modern Plastics Processing and Applications
基金
国家自然科学基金(50763001)
广西自然科学基金(桂科自0728223)
广西应用基础研究专项(桂科基0731002,0836016)
关键词
纳米二氧化硅
不饱和聚酯
原位混杂
复合材料
性能
nano-silicon dioxide
unsaturated polyester
in-situ hybrid
composite properties
