Journal
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Volume 76, Issue 1, Pages 66-73Publisher
SPRINGER
DOI: 10.1007/s10971-015-3752-y
Keywords
Tetraethoxysilane; Phenyltriethoxysilane; Hydrolysis-condensation
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Funding
- Bureau of Energy, Ministry of Economic Affairs of the Republic of China [102-E0608]
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Silicone resin containing phenyl group was synthesized by hydrolysis-condensation reaction using tetraethoxysilane (TEOS), chlorotrimethylsilane (TMCS) and phenyltriethoxysilane (PhTES). H-1-NMR and Si-29-NMR spectroscopy characterizations also confirmed that silicone resin was successfully obtained based on the combination of TEOS, PhTES and TMCS in a crosslinked network structure. Silicone resin has been thoroughly characterized using gel permeation chromatography, thermogravimetric analysis, ultraviolet-visible spectroscopy, contact angle and softening point measurements. A steady increase in the molecular weight, hydrophobic, softening point and maximum degradation temperature of the silicone resin has been observed with the increasing weight percentage of the PhTES crosslink, but transmittance properties decreased. It has been shown that the non-polar component of the higher contact angle of silicone resin can be increased up to 113A degrees by 3 % PhTES.Silicone resin applied to silicone pressure-sensitive adhesives (SPSA) to increase the hydrophobic indicated a decrease in surface energy, leading to improved wettability for polytetrafluoroethylene. The peel strength of SPSA can be increased up to 8 N/2.5 cm by content PhTES 2 % of silicone resin and increased 54 % without PhTES. [GRAPHICS] .
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