Synthesis and thermal properties of silicon-containing epoxy resin used for UV-curable flame-retardant coatings

A novel silicon-containing trifunctional cycloaliphatic epoxide resin tri(3,4-epoxycyclohexylmethyloxy) phenyl silane (TEMPS) was synthesized and characterized by FTIR, 1 H NMR, 13 C NMR, and 29 Si NMR spectroscopic analysis. A series of flame-retardant formulations by blending TEMPS with a commerci...

Full description

Saved in:
Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2011, Vol.103 (1), p.303-310
Main Authors: Cheng, Xi-e, Shi, Wenfang
Format: Article
Language:English
Subjects:
Analytical Chemistry
Applied sciences
Calorimetry
Chemistry
Chemistry and Materials Science
Coatings
Coatings industry
Combustion
Compounding ingredients
Density
Epoxy resins
Exact sciences and technology
Fireproof agents
Inorganic Chemistry
Measurement Science and Instrumentation
Nuclear magnetic resonance
Phenyls
Physical Chemistry
Polymer industry, paints, wood
Polymer Sciences
Polymers
Resins
Silane
Silicon
Technology of polymers
Thermal analysis
Thermal properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel silicon-containing trifunctional cycloaliphatic epoxide resin tri(3,4-epoxycyclohexylmethyloxy) phenyl silane (TEMPS) was synthesized and characterized by FTIR, 1 H NMR, 13 C NMR, and 29 Si NMR spectroscopic analysis. A series of flame-retardant formulations by blending TEMPS with a commercial epoxide resin DGEBA (EP828) in different ratios were prepared, and exposed to a medium pressure lamp to form the cured films in the presence of diaryliodonium hexafluorophosphate salt as a cationic photoinitiator. The thermal degradation behaviors of the cured films were evaluated by thermogravimetric analysis. The char yields under nitrogen and air atmospheres increased along with the TEMPS content. The limiting oxygen index (LOI) value increased from 22 for EP828 to 30 for TEMPS80, demonstrating the improved flame retardancy. The data from the dynamic mechanical thermal analysis showed that TEMPS had good miscibility with EP828. The T s and T g both decreased from 93 and 138 to 78 and 118 °C, respectively. The crosslinking density ( ν e ) increased along with the TEMPS content. The mechanical property measurements indicated that the addition of TEMPS led to a decrease in the tensile strength and an increase in the elongation-at-break.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-010-1053-9