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- Title
Synthesis of a liquid zirconium hybrid resin and the ability of the resin to accelerate the curing of a transparent silicone-modified cycloaliphatic epoxy nanocomposite.
- Authors
Hsu, Chia ‐ Wen; Ma, Chen ‐ Chi M; Tan, Chung ‐ Sung; Li, Hsun ‐ Tien; Chen, Wen ‐ Bin; Huang, Shu ‐ Chen
- Abstract
A liquid zirconium hybrid resin (Zr- QR) was synthesized through sol-gel reactions of zirconium butoxide with silanol-terminated polydimethylsiloxane ( DMS-S12) and γ-glycidoxypropyltrimethoxysilane (Z-6040). The sol-gel reactions were monitored using Fourier transform infrared ( FTIR) spectroscopy and proton nuclear magnetic resonance spectroscopy. The Zr- QR morphology was investigated using field emission transmission electron microscopy. The Zr- QR had a well-ordered morphology and the dimensions were less than 5 nm. These properties were achieved because DMS-S12 was used to separate the zirconium clusters and Z-6040 was used to stabilize the Zr- QR. The acceleration of the curing reaction between silicone-modified cycloaliphatic epoxy ( SEP) and methylhexahydrophthalic anhydride ( MHHPA) caused by the Zr- QR was investigated. Differential scanning calorimetry and FTIR spectroscopy investigations showed that the Zr- QR first reacted with MHHPA, producing chelating ligands and carboxylic acid. Unlike in the conventional method (adding acetic acid to cause non-reactive chelating ligands to form), the carboxylic acid produced effectively accelerated the curing reaction between the SEP and MHHPA. The chelating ligand produced from the Zr- QR and MHHPA suppressed the gelation of the Zr- QR itself during the nanocomposite ( SEP-Zr- QR) curing process. The cured SEP-Zr- QR nanocomposite exhibited excellent optical transmittance at visible wavelengths.© 2015 Society of Chemical Industry
- Subjects
ZIRCONIUM compounds synthesis; GUMS &; resins; CURING; NANOCOMPOSITE materials; SOL-gel processes; PROTON magnetic resonance spectroscopy
- Publication
Polymer International, 2015, Vol 64, Issue 9, p1268
- ISSN
0959-8103
- Publication type
Article
- DOI
10.1002/pi.4916