以端羟基聚二甲基硅氧烷为基体硅油,Al_2O_3为基础导热填料,以二氧化硅(SiO_2)部分代替Al_2O_3,制得高绝缘室温硫化导热硅橡胶,再用纳米Al_2O_3对高绝缘室温硫化导热硅橡胶进行改性,并对其绝缘性能、导热性能、力学性能等进行测试分析...以端羟基聚二甲基硅氧烷为基体硅油,Al_2O_3为基础导热填料,以二氧化硅(SiO_2)部分代替Al_2O_3,制得高绝缘室温硫化导热硅橡胶,再用纳米Al_2O_3对高绝缘室温硫化导热硅橡胶进行改性,并对其绝缘性能、导热性能、力学性能等进行测试分析。结果表明:当SiO_2、Al_2O_3的配比为60∶40、总填充量为65%时,硅橡胶的电气强度可达27.1 k V/mm。当纳米Al_2O_3填充量占粉体总量的1.5%时,硅橡胶的电气强度达到28.0 k V/mm,渗油率为0.9%,综合性能良好。展开更多
The effects of soil texture, initial water content and bulk density on diesel oil infiltration in fine sand and silty clay loam materials were evaluated. Three physical and two empirical equations express diesel oil i...The effects of soil texture, initial water content and bulk density on diesel oil infiltration in fine sand and silty clay loam materials were evaluated. Three physical and two empirical equations express diesel oil infiltration through soils with time, with coefficients of determination greater than 0.99. Diesel oil infiltrates more quickly in the fine sand than in the silty clay loam material. Diesel oil infiltration rates are found to decrease with increasing initial water content and bulk density for the silty clay loam material. The infiltration rate of diesel oil in the fine sand material increases slightly with increasing initial water content. The diesel oil saturated conductivity(Kdiesel) decreases with increasing bulk density for the silty clay loam column. Diesel oil sorptivity(S) decreases linearly with increased initial water content and bulk density of the silty clay loam material. Changes in empirical parameters relative to initial water content and bulk density are similar to the parameter S.展开更多
文摘以端羟基聚二甲基硅氧烷为基体硅油,Al_2O_3为基础导热填料,以二氧化硅(SiO_2)部分代替Al_2O_3,制得高绝缘室温硫化导热硅橡胶,再用纳米Al_2O_3对高绝缘室温硫化导热硅橡胶进行改性,并对其绝缘性能、导热性能、力学性能等进行测试分析。结果表明:当SiO_2、Al_2O_3的配比为60∶40、总填充量为65%时,硅橡胶的电气强度可达27.1 k V/mm。当纳米Al_2O_3填充量占粉体总量的1.5%时,硅橡胶的电气强度达到28.0 k V/mm,渗油率为0.9%,综合性能良好。
基金Projects(40272108,41402208)supported by the National Natural Science Foundation of ChinaProjects(ZR2012DL05,ZR2015EL044)supported by Shandong Provincial Natural Science Foundation,China+1 种基金Project(4072-114017)supported by Young Teachers’ Development of Shandong University of Technology,ChinaProject(J12LC51)supported by Shandong Province Higher Educational Science and Technology Program,China
文摘The effects of soil texture, initial water content and bulk density on diesel oil infiltration in fine sand and silty clay loam materials were evaluated. Three physical and two empirical equations express diesel oil infiltration through soils with time, with coefficients of determination greater than 0.99. Diesel oil infiltrates more quickly in the fine sand than in the silty clay loam material. Diesel oil infiltration rates are found to decrease with increasing initial water content and bulk density for the silty clay loam material. The infiltration rate of diesel oil in the fine sand material increases slightly with increasing initial water content. The diesel oil saturated conductivity(Kdiesel) decreases with increasing bulk density for the silty clay loam column. Diesel oil sorptivity(S) decreases linearly with increased initial water content and bulk density of the silty clay loam material. Changes in empirical parameters relative to initial water content and bulk density are similar to the parameter S.
