Photoinitiator 938 Application scenarios
1. Photopolymerizable Materials
High-performance coatings/inks: e.g., optical fiber coatings, electronic component encapsulation inks.
2. Electronic Materials
Photosensitive components in semiconductor photoresists, enhancing pattern resolution.
3. Materialen voor tandheelkundige restauratie
As a key component in photopolymerization systems for composite resins, used in combination with camphorquinone to achieve superior mechanical properties and low polymerization shrinkage.
4. 3D Printing and Photopolymerization
Used in photopolymerizable 3D printing resins (e.g., with oxetane monomers) to enable rapid prototyping.
5. Academic Research
Serves as a performance benchmark for cationic photoinitiators, facilitating studies and comparisons of novel photoinitiator efficiencies. Acts as a standard initiator in photopolymerization research involving mixed monomers (e.g., epoxides and acrylates).
🧪 Mechanism of Action and Key Properties
Werkingsmechanisme:
It belongs to the iodonium salt class of photoinitiators. Upon UV irradiation, it decomposes to generate hyperprotonic acids (Brønsted acids) and reactive free radicals, thereby simultaneously initiating cationic polymerization of epoxy resins and radical polymerization of certain monomers.
Basic Properties:
Typically appears as a white crystalline powder, readily soluble in organic solvents such as ethanol and ethyl acetate.
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