Effect of HGS on Vulcanization Properties of Addition-Type Silicone Sealing Glue
The surface of hollow glass microsphere was treated by different methods,the pH value and conductivity of filler filtrate were detected.Based on the changing trend of viscosity doubling time and viscosity lose time,the influence of HGS ob-tained by different treatments on vulcanization performance of addition silicone sealing glue was studied.The experimental results show when the molar ratio of SiVi to SiH is 1∶1,the vulcanization time of the sealing glue is appropriate.The pH values of HGS filtrates with different treatments do not change signifcantly,but the conductivity is obviously different.After treatment with KH171,KH560,and UM08,the impurities on the surface of the HGS are effectively removed or encapsulated,without affecting the vulcanization performance and storage stability of the silicone sealing glue.
addition-typesiliconesealing gluevulcanization propertyhollow glass microspheresconductivitypH value
NETL
NSTL
万方数据
