Studies on UV‐stable silicone–epoxy resins | Zendy

Huang Wei | Zendy; Zhang Ying | Zendy; Yu Yunzhao | Zendy; Yuan Youxue | Zendy

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Studies on UV‐stable silicone–epoxy resins

Author(s) -

Huang Wei,

Zhang Ying,

Yu Yunzhao,

Yuan Youxue

Publication year - 2007

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.26188

Subject(s) - epoxy , silicone , materials science , curing (chemistry) , silicone resin , hydrosilylation , cyclohexane , polymer chemistry , gelcoat , composite material , siloxane , catalysis , organic chemistry , chemistry , polymer , coating

Silicone–epoxy resins were synthesized through hydrosilylation of 1,2‐epoxy‐4‐vinyl‐cyclohexane with 1,3,5,7‐tetramethycyclotetrasiloxane. The silicone–epoxy resins showed high reactivity in the presence of aluminum complex/silanol compound catalysts. Curing of the resins was effected at extremely low concentrations of the aluminum acetylacetonate/Ph 2 Si(OH) 2 catalyst to give hard materials with optical clarity. For the silicone–epoxy resins containing SiH bonds, Al(acac) 3 alone is effective for the curing. The cured silicone–epoxy resins showed excellent UV resistance. An improvement in the lifetime of UV‐LEDs was achieved using the silicone–epoxy compositions as encapsulant. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 3954–3959, 2007

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