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In Situ Polymerization Approach to Graphene‐Oxide‐Reinforced Silicone Composites for Superior Anticorrosive Coating
Author(s) -
Zhu Hongxia,
Chen Yuyan,
Li Huaiyuan,
Wang SuXi,
Li Xu,
Zhu Qingzeng
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800252
Subject(s) - materials science , graphene , silicone , composite material , oxide , in situ polymerization , thermal stability , polymerization , coating , dynamic mechanical analysis , silanes , silane , chemical engineering , polymer , nanotechnology , engineering , metallurgy
Novel graphene‐oxide‐reinforced silicone composites (GOSC) are prepared by in situ polymerization of silanes and low concentrations (<0.15 wt%) of silylated GO (SGO). After modification, the distances of the SGO nanosheets are successfully increased from 0.72 to 0.87 nm. Compared with GO, the SGO shows better dispersibility in organic solvents as well as remarkably enhanced decomposition temperature ( T d improved by 100 °C). After covalently grafting onto silicone resins via in situ polymerization, the obtained GOSC exhibits greatly enhanced thermal stability ( T d up to 400 °C and T g improved by 3–5 °C), increased storage modulus, loss modulus, and complex viscosity. The morphology, microstructure, interfacial adhesion of the developed GOSC coatings were carefully investigated. The GOSC coatings on metal exhibit good transparency (up to 90%), hydrophobicity, and excellent anticorrosion capability. This work provides a new strategy for developing high performance graphene‐based silicone composite materials.