TY - JOUR
T1 - Preparation of boron-containg hybridized silicon rubber by in-situ polymerization of vinylphenyl-functionalized polyborosiloxane and liquid silicone rubber
AU - Zhang, Yu long
AU - Zang, Chong guang
AU - Shi, Li ping
AU - Jiao, Qing jie
AU - Pan, Hong wei
AU - She-li, Yun fei
N1 - Publisher Copyright:
© 2021
PY - 2021/3/26
Y1 - 2021/3/26
N2 - In this study, a kind of boron-containg hybridized silicon rubber (VP–PBSi/SR), which possess great thermal and mechanical properties, was successfully prepared. First, the vinylphenyl-functionalized polyborosiloxane (VP–PBSi) possessing good storage stability were synthesized by reacting triethoxyvinylsilane (VTEOS), phenyltriethoxysilane (PTEOS) and boric acid (BA) by sol-gel method. From the results of GPC, FT-IR, 13C-, 29Si, 11B-NMR characterization, the structures of VP-PBSi were confirmed to be the cage structure. Then, the VP-PBSi/SR were prepared by in situ polymerization of vinylphenyl-functionalized polyborosiloxane (VP–PBSi) and addition liquid silicone rubber (SR). The effect of VP-PBSi on thermal stability and mechanical properties of SR were mainly discussed by scanning electron microscope (SEM), thermal gravimetric analysis (TG), universal testing machine, and dynamic mechanical analysis (DMA), respectively, and the results showed that the thermal stability and mechanical properties of the SR were significantly enhanced. The maximum thermal decomposition temperature (Tmax), char yield and tensile strength can reach 675 °C, 72.3% and 4.65 MPa, respectively, and 21.8%, 26.1% and 20.2% higher than that of neat SR. We believe this work can provide reference for the preparation of high-performance heat resistance rubber materials.
AB - In this study, a kind of boron-containg hybridized silicon rubber (VP–PBSi/SR), which possess great thermal and mechanical properties, was successfully prepared. First, the vinylphenyl-functionalized polyborosiloxane (VP–PBSi) possessing good storage stability were synthesized by reacting triethoxyvinylsilane (VTEOS), phenyltriethoxysilane (PTEOS) and boric acid (BA) by sol-gel method. From the results of GPC, FT-IR, 13C-, 29Si, 11B-NMR characterization, the structures of VP-PBSi were confirmed to be the cage structure. Then, the VP-PBSi/SR were prepared by in situ polymerization of vinylphenyl-functionalized polyborosiloxane (VP–PBSi) and addition liquid silicone rubber (SR). The effect of VP-PBSi on thermal stability and mechanical properties of SR were mainly discussed by scanning electron microscope (SEM), thermal gravimetric analysis (TG), universal testing machine, and dynamic mechanical analysis (DMA), respectively, and the results showed that the thermal stability and mechanical properties of the SR were significantly enhanced. The maximum thermal decomposition temperature (Tmax), char yield and tensile strength can reach 675 °C, 72.3% and 4.65 MPa, respectively, and 21.8%, 26.1% and 20.2% higher than that of neat SR. We believe this work can provide reference for the preparation of high-performance heat resistance rubber materials.
KW - Mechanical properties
KW - Polyborosiloxane
KW - Thermal stability
UR - http://www.scopus.com/inward/record.url?scp=85101076731&partnerID=8YFLogxK
U2 - 10.1016/j.polymer.2021.123541
DO - 10.1016/j.polymer.2021.123541
M3 - Article
AN - SCOPUS:85101076731
SN - 0032-3861
VL - 219
JO - Polymer
JF - Polymer
M1 - 123541
ER -