摘要
将湿法改性得到的活性纳米CaCO3应用于RTV硅密封胶中 ,扫描电镜测试结果表明 ,改性的碳酸钙能够在RTV硅密封胶中达到很好的分散 ,活性CaCO3 RTV硅密封胶体系黏度低 ,因而有较好的加工性能 ;经过改性的纳米CaCO3能够极大地提高RTV硅密封胶的机械性能 ,其中拉伸强度提高 3 0 0 %,断裂伸长率提高 1 0 0 %。
In this study, CaCO_3 nanoparticles were modified hydrophobically, forming a compound functional filler. The sedimentation experimental results show that the dispersion of nano CaCO_3 in an organic impregnant is improved markedly,the admixture viscosity decreases obviously and the mechanical properties of silicon sealant filled with modified nano CaCO 3 are also improved evidently. The tensile strength reached a maximum value for a addition of nano CaCO_3 up to 40% of silicon sealant. The tensile strength enhanced 300%.The rupture elongation increased 100%.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第1期25-27,32,共4页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家"十.五"重大科技攻关计划(2001BA310A01)
关键词
纳米
改性
机械性能
nano
modified
mechanical properties
