Synthesis, Characterization and Thermooxidative Properties of Hybrid Block Poly(silane-b-arylacetylene)

Ying Jie Xu; Hui Min Qi; Ya Ping Zhu; Fan Wang

doi:10.4028/www.scientific.net/AMR.1004-1005.527

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1004-1005Synthesis, Characterization and Thermooxidative...

Synthesis, Characterization and Thermooxidative Properties of Hybrid Block Poly(silane-b-arylacetylene)

Abstract:

Organic-inorganic hybrid block Poly (silane-b-arylacetylene) (PSbA) have been synthesized through condensation polymerization between chloro-terminated polysilane and diethynylbenzene Grignard reagent, and chloro-terminated polysilane was synthesized through condensation polymerization of dichloromethylvinylsilane in the presence of Mg metal and Lewis acid (ZnCl_2,LiCl). The structures of PSbAs were characterized by FTIR, ¹H, ¹³C, ²⁹Si NMR, and GPC. The PSbAs are orange viscous liquid and can be soluble in common organic solvents at room temperature. The thermal cure behavior of PSbAs was determined by DSC, and the thermal and oxidative stability of the cured PSbAs were investigated using TGA. The results showed that the cured PSbAs exhibit high thermal and thermooxidative stability. The degradation temperatures at 5% weight loss for the cured PSbAs are 470-533°C under N₂ and 378-456°C under air, and the residue yields at 1000°C are 77.9-82.8% under N₂ and 40.4-50.5% under air.

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Periodical:

Advanced Materials Research (Volumes 1004-1005)

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527-532

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.527

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Online since:

August 2014

Authors:

Ying Jie Xu, Hui Min Qi*, Ya Ping Zhu, Fan Wang

Keywords:

Arylacetylene, C/C-SiC, Oxidative Stability, Polysilane

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