Preparation, Cross-Linking and Characterization of Novel Benzocyclobutene-Siloxane Polymers with Polysiloxane Mainchain and Silylbenzocyclobutene Pendant Groups

Hui Ling Li; Ya Wen Hang; Ke Cao; Fang Hua Zhu; Jun Xiao Yang

doi:10.4028/www.scientific.net/AMR.534.178

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 534Preparation, Cross-Linking and Characterization of...

Preparation, Cross-Linking and Characterization of Novel Benzocyclobutene-Siloxane Polymers with Polysiloxane Mainchain and Silylbenzocyclobutene Pendant Groups

Abstract:

A series of BCB-siloxane polymers with benzocyclobutene (BCB) pendant groups and polysiloxane mainchain was prepared by the hydrosilylation reaction between 4-(1,1-di-methyl-1-vinyl) silylbenzocyclobutene (4-DMVSBCB) and poly (methylhydrosiloxane) (PHMS) employing Pt/C as catalyst. Upon heating the BCB-siloxane polymers, the cross-linking occurred via ring-opening of benzocyclobutene as evidenced by on-line FT-IR, 1H NMR and 13C NMR. TGA examination indicates that the thermal stability was enhanced with increasing the incorporation ratio of BCB. Most importantly, the initial decomposition temperature of crosslinked BCB-siloxane resins is as high as 429 oC, showing a superior thermal resistance over most other BCB resins.

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Advanced Materials Research (Volume 534)

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178-183

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.534.178

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Online since:

June 2012

Authors:

Hui Ling Li, Ya Wen Hang, Ke Cao, Fang Hua Zhu, Jun Xiao Yang

Keywords:

4-Vinylsilylbenzocyclobutene, Hydrosilylation, Poly (Methylhydrosiloxane), Thermal Stability

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