Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 292, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2022.126855
Keywords
Fluorosilicone rubber; Perfluorocyclobutyl; Non-telechelic crosslinker; Vinyl silicone oil
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Funding
- National Natural Science Foundation of China (NSFC) [51603178]
- Foundation of Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, P.R. China
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Vinyl silicone oil containing perfluorocyclobutyl aryl ether in the backbone (PFCB-VSO) was prepared and used as a non-telechelic crosslinker in the design of fluorosilicone rubber. The mechanical properties, thermal properties, and hydrophobic properties of the rubber were improved by the addition of PFCB-VSO. The study also investigated the cross-link network and demonstrated the effect of PFCB-VSO on cross-link density.
Vinyl silicone oil containing perfluorocyclobutyl aryl ether in the backbone (PFCB-VSO) was prepared by polycondensation of silane monomer containing perfluorocyclobutyl aryl ether (M4), dimethyldimethoxysilane, and methyl vinyl dimethoxysilane in the acetic acid system. Fluorosilicone rubber was designed by using PFCB-VSO as a non-telechelic crosslinker. The effects of PFCB-VSO on the mechanical properties, thermal properties, and hydrophobic properties of fluorosilicone rubber were studied. The cross-link network of fluorosilicone rubber was investigated. The cross-link point was concentrated by the introduction of PFCB-VSO, which was demonstrated by cross-link density. The mechanical properties were enhanced by the growth of the non-telechelic cross-link network. The tensile strength was 10.35 MPa, the tear strength was 21.78 kN/m, and the elongation at break was 735%. The thermal stabilities and the hydrophobic properties of fluorosilicone rubber were increased by PFCB-VSO.
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