Abstract
In order to improve the affinity and dispersion of calcium silicates filler on PVC matrix, calcium silicates containing a phenyl or methyl group were synthesized by hydro-thermal reaction of phenyl or methyl trichlorosilane and calcium oxide.
Xonotlites containing a small quantity of phenyl group were produced from phenyl tri-chlorosilane at above 240°C. Meanwhile, amorphous calcium silicates or poorly crystalline calcium silicates called CSH(I) were produced from methyl tri-chlorosilane, but they had comparatively much methyl group.
These calcium silicates have fairly better effects on the dispersion into PVC and mechanical properties than xonotlites from silica sand.
