UV Curing of Epoxy Resins
Epoxy monomer + Photoinitiator → Cross-linked polymer
概要
Cationic photoinitiators generate strong acids upon UV exposure, which catalyze the ring-opening polymerization of epoxy groups. Unlike free-radical photopolymerization, cationic UV curing continues after the light is removed (dark cure) and is not inhibited by oxygen. This produces highly cross-linked, chemically resistant networks.
日常の例
UV-curable epoxy adhesives are used in electronics assembly, bonding glass to metal, and sealing fiber optic connectors.
産業上の重要性
UV硬化エポキシは電子機器製造、光ファイバー組立、回路基板の保護コーティングに不可欠である。
特性
- タイプ
- Photochemical
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -95.0 kJ/mol
- 触媒
- Cationic photoinitiator
関連する反応
Cis-Trans Isomerization of Retinal
Silver Chloride Photodecomposition
Luminol Chemiluminescence
Firefly Bioluminescence (Luciferin Oxidation)
Photolysis of Water (Vacuum UV)
Photochemical Smog Formation (NO₂ Photolysis)
Photodegradation of Methylene Blue by TiO₂
Photodissociation of Chlorine Gas
Silver Bromide Photodecomposition
Chlorophyll Fluorescence
Frequently Asked Questions
What is the equation for UV Curing of Epoxy Resins?
The balanced equation is: Epoxy monomer + Photoinitiator → Cross-linked polymer.
What type of reaction is UV Curing of Epoxy Resins?
UV Curing of Epoxy Resins is a photochemical reaction.
Is UV Curing of Epoxy Resins exothermic or endothermic?
UV Curing of Epoxy Resins is exothermic (releases energy). The enthalpy change (ΔH) is -95.0 kJ/mol.
What conditions are needed for UV Curing of Epoxy Resins?
This reaction requires a catalyst (Cationic photoinitiator).