摘要
空心玻璃微球是制备复合泡沫材料的关键原料,对其进行表面改性有利于改善复合材料的性能。但目前的研究甚少关注处理过程对微球性能的影响,不利于复合材料的进一步优化设计。因此,本文拟在制备空心玻璃微球的基础上,通过改变处理液组成、处理时间等条件,测试微球粒子密度、抗压强度等变化情况,研究改性过程对其性能的影响。实验结果表明,改性过程中水会侵蚀玻璃壳体,导致其粒子密度随处理时间的延长、酸度的增大而降低,抗压强度也随之下降。采用适当浓度的Al2(SO4)3水溶液处理微球可以在其表面形成新的膜层,改善抗压强度。
Hollow glass mierospheres are used as a key material to produce syntactic foams. Surface modification of the mierospheres is very important for improving properties of the foams. However, few researches are focused on effects of process of surface modification on properties of the microspheres, which would influence the properties of the foams. In the present work, We studied the effects through measuring particle density and crush strength of microspheres, based on the production of microspheres. The results showed that particle density of microspheres re- duced with increasing time and acidity of aqueous solution since water erode glass shell. At the same time, broken ratio increased. Aqueous solution of Al2（ SO4 ） 3 could increase crush strength because of formation of new film on surface of the microspheres.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2008年第1期17-20,34,共5页
Fiber Reinforced Plastics/Composites
基金
国家自然科学基金(10476031)
863计划(2006AA09Z209)资助项目
关键词
空心玻璃微球
表面处理
粒子密度
抗压强度
hollow glass microspheres
surface modification
particle density
crush strength
