| 改性纳米CaCO3对RTV硅密封胶性能的影响 |
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| 引用本文： | 汤志松,刘润静,郭奋,陈建峰.改性纳米CaCO3对RTV硅密封胶性能的影响[J].北京化工大学学报(自然科学版),2005,32(1):25-27. |
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| 作者姓名： | 汤志松 刘润静 郭奋 陈建峰 |
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| 作者单位： | 北京化工大学教育部超重力工程研究中心，北京 100029 |
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| 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300%，断裂伸长率提高100%,扯断伸长率没有明显变化。
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| 关 键 词： | 纳米 改性 机械性能 纳米 改性 机械性能 |
| 收稿时间： | 2004-04-22 |
Application of modified CaCO3 in silicon sealant |
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| TANG Zhi,song LIU Run,jing GUO Fen CHEN Jian,feng.Application of modified CaCO3 in silicon sealant[J].Journal of Beijing University of Chemical Technology,2005,32(1):25-27. |
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| Authors: | TANG Zhi song LIU Run jing GUO Fen CHEN Jian feng |
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| Institution: | Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029,China |
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| Abstract: | 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%. |
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| Keywords: | nano modified mechanical properties |
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