Silicon-Containing Cycloaliphatic Epoxy Resins with Systematically Varied Functionalities: Synthesis and Structure/Property Relationships

✍ Scribed by Wanshuang Liu; Zhonggang Wang

• Book ID: 102484185
• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 367 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201000779

✦ Synopsis

Abstract

The manipulation of the properties of cycloaliphatic epoxy resins by systematical variations of the molecular structure is demonstrated. Specifically, four cycloaliphatic epoxy resins with silicon‐center linked via methyl, phenyl, and epoxy groups of different number were synthesized. The cured epoxides had remarkably changed crosslinking density from 0.45 × 10^−3^ to 9.64 × 10^−3^ mol · cm^−3^, glass transition temperature from 133 to 237 °C, and considerably decreased thermal expansion coefficient from 6.44 × 10^−5^ to 4.83 × 10^−5^ K^−1^. It was proved that the higher crosslinking density was related to more opened segments by wide‐angle X‐ray diffraction. The physical properties of cured products and their correlations with the chemical structures were investigated in detail. magnified image