9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide-based oligosiloxane as a promising damping additive for methyl vinyl silicone rubber (VMQ)

• Published in: Journal of materials science Vol. 52; no. 14; pp. 8603 - 8617
• Main Authors: Liu, Bozheng, Gao, Xiyin, Zhao, Yunfeng, Dai, Lina, Xie, Zemin, Zhang, Zhijie
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2017; Springer; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemical bonds; Chemistry and Materials Science; Classical Mechanics; Crystallography and Scattering Methods; Damping; Dynamic mechanical analysis; Elastomers; Energy dissipation; Hydrogen; Hydrogen bonding; Materials Science; Mechanical properties; NMR; Nuclear magnetic resonance; Original Paper; Oxalic acid; Polymer Sciences; Rubber; Silicon dioxide; Silicone rubber; Silicones; Solid Mechanics; Thermal properties; Thermodynamic properties; Thermogravimetric analysis; Nuclear Magnetic Resonance; Dynamic Mechanical Analysis; 29Si Nuclear Magnetic Resonance; Rubber Material; Dynamic Mechanical Analysis Test
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-017-1085-7

For the first time, we report the damping effect of a novel 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO)-based oligosiloxane abbreviated as DOPO-PMVS on methyl vinyl silicone rubber (VMQ) elastomers. Designed DOPO-PMVS was synthesized by means of hydrophosphination reaction and studied by FT-IR, 1 H NMR, 29 Si NMR, 31 P NMR, and thermogravimetric analysis. The effect of added DOPO-PMVS on damping, mechanical, and thermal properties of VMQ elastomers before and after post-cure was then examined. Interestingly, the dynamic mechanical analysis data showed that the incorporation of 10 wt% DOPO-PMVS significantly improved the damping properties of VMQ elastomers from −20.5 to 200 °C. The effect mechanism was attributed to the hydrogen bonding interactions exerted between DOPO-PMVS and silica. The break and recombination of hydrogen bonding caused by external force resulted in more dissipated energy and enhanced damping properties. Furthermore, the mechanical and thermal properties of VMQ/DOPO-PMVS elastomers were very practical for the application of damping silicon rubber.