| 摘要 |
The present invention provides a sulphur cement pre- composition, comprising sulphur and at least a polysulphide-containing organosilane in an amount of at least 0.3 wt% based on the weight of the total composition, which polysulphide-containing organosilane is of the general molecular formula: (X3Si)mH(2n+1-m)Cn-Sa-Cn'H(2n'+1-m') (SiX'3)m' (1) wherein a is an integer in the range of from 2 to 8, X and X' each are, independently, a hydrolysable group, n and n' each are, independently, an integer in the range of from 1 to 4, and m and m' each are, independently, an integer in the range of from 1 to (2n+1). The invention further provides a process for preparing such sulphur cement pre-composition, a process for the preparation of sulphur cement or sulphur cement-aggregate composite, a sulphur cement or a sulphur cement-aggregate composite and the use of such sulphur cement pre-composition.
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