Citation: . CROSSLINKED ORGANOSILOXANE HYBRID MATERIALS PREPARED BY CONDENSATION OF SILANOL AND MODIFIED SILICA:SYNTHESIS AND CHARACTERIZATION[J]. Chinese Journal of Polymer Science, ;2013, 31(7): 974-983. doi: 10.1007/s10118-013-1289-5 shu

CROSSLINKED ORGANOSILOXANE HYBRID MATERIALS PREPARED BY CONDENSATION OF SILANOL AND MODIFIED SILICA:SYNTHESIS AND CHARACTERIZATION

Received Date: 7 July 2012
Revised Date: 8 October 2012

Fund Project: This work was financially supported by the Open Fund from State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology.

Hybrid materials based on polymethylphenylsiloxane (PMPS) and organic functionalized silica were synthesized via condensation reaction between silanol and alkoxysilyl groups in the presence of quaternary ammonium hydroxide. The structure of prepared materials was investigated by FTIR and NMR, which indicate that the products have incorporated modified silica into the polymer matrix. The prepared hybrid materials show a satisfactory thermal resistance because the initial decomposition of typical product occurred at nearly 100 K higher than that of the pure polymer according to the thermogravimetric analysis (TGA) results. Differential thermogravimetric analysis (DTGA) data confirm that the thermal degradation of prepared hybrid materials comprises of two steps, of which the first one could be controlled by adjusting the content of silica particles and the ratio of surface groups on the particles. The coating films obtained from hybrid products exhibit good thermal mechanical properties. Therefore, the materials are hoped to be used for the application in thermal resistant coating.
- Hybrid material,
- Crosslinked polysiloxane,
- Condensation polymerization,
- Thermal stability
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