Journal
ACS OMEGA
Volume 4, Issue 7, Pages 11921-11927Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.9b01153
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Funding
- National Natural Science Foundation of China [31600462]
- Mudanjiang Normal University National Project Cultivation Project [GP2018002]
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alpha-Pinene-modified triethoxysilane (alpha-PTES) was synthesized by hydrosilylation in the presence of Karstedt's catalyst. The structure of alpha-PTES was determined by Fourier transform infrared spectroscopy and nuclear magnetic resonance. Under the catalysis of an organotin catalyst, alpha-PTES, which was the cross-linking agent, and the hydroxy-terminated poly(dimethylsiloxane) matrix were utilized to prepare the room-temperature vulcanized silicone rubber. Morphology, thermal performance, and mechanical properties of the modified silicone rubber were investigated by scanning electron microscopy, thermal gravimetric analysis, dynamic mechanical analysis, and a universal testing machine. Because of the strong rigidity of the ring structure of alpha-pinene, the thermal and mechanical properties of modified silicone rubber were improved greatly than those of the silicone rubber, and the cross-linking agent of which was methyltriethoxysilane. Results showed that the tensile strength and the break at elongation increased by 69.2 and 125%, respectively, and they are nearly doubled compared to the unmodified silicone rubber.
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