EFFECT OF ACIDITY ON ACID-SENSITIVE UV CURING SYSTEM

• 来源期刊: 高分子科学(英文版)
• 年，卷（期）: 1999,（1）
• 页码范围: 43-48
• 页数: 6页
• 语种: 英文

摘要

By using diphenyliodonium salts with different counterions as photo acid generators (PAGs), the effect of acidity on ring-opening polymerization of epoxy monomers and polycondensation of polyol with hexamethoxymethyl melamine (HMMM) was studied. The result shows that the rate of ring-opening polymerization is evidently dependent on the acidity of the acid and strong photo-generated acid is required.However, there is a leveling effect in the polycondensation system; if the photo-generated acid is stronger than protonated HMMM, the acidity does not obviously affect the polycondensation rate.