UV light-induced polymerization is one of the most efficient methods to produce pressure-sensitive adhesives (PSAs) in lamination processes, as it is simple and easily scalable. Among the wide variety of monomers used in light-induced polymerizations, acrylates and/or methacrylates are typically used as the main components due to their versatility and their high reactivity. However, as radical polymerization is not tolerant to the presence of oxygen, O₂ inhibitors must be added, which increases the final cost of the laminate adhesive. In this work, we exploit the oxygen insensitivity of thiol-click reactions and evaluate their potential for use in fast and inexpensive UV curable resins for lamination processes. After some preliminary investigations that demonstrate the need for a radical inhibitor to extend the shelf life of the noncured resin, we confirm the insensitivity of this reaction to the presence of oxygen. After evaluating the effect of several parameters, including the effect of thiol functionality, vinyl ester structure, and the addition of an acrylate, we demonstrate the design of a formulation with competitive adhesive performance compared to conventional photopolymerized acrylic PSAs. Materials with relatively high gel content (66%), intermediate crosslinking (swelling degree 391%), and low T_g were obtained using a bifunctional thiol, an aliphatic vinyl monomer, and a polyurethane-based diacrylate. This formulation has good potential for the replacement of acrylate-based adhesives because it is capable of polymerization in short times and in the presence of oxygen and possesses fast adhesion to the substrate and a very good adhesive/cohesive ratio.

紫外光诱导聚合是在层压工艺中生产压敏粘合剂 (PSA) 的最有效方法之一，因为它简单且易于扩展。在用于光诱导聚合的各种单体中，丙烯酸酯和/或甲基丙烯酸酯由于其多功能性和高反应性而通常用作主要成分。然而，由于自由基聚合不能容忍氧气的存在，O ₂必须添加抑制剂，这增加了层压粘合剂的最终成本。在这项工作中，我们利用了硫醇点击反应的氧不敏感性，并评估了它们在用于层压工艺的快速且廉价的紫外线固化树脂中的应用潜力。经过一些初步研究表明需要自由基抑制剂来延长未固化树脂的保质期，我们确认该反应对氧气的存在不敏感。在评估了几个参数的影响后，包括硫醇官能度、乙烯基酯结构和添加丙烯酸酯的影响，我们展示了与传统光聚合丙烯酸 PSA 相比具有竞争性粘合性能的配方设计。凝胶含量相对较高（66%）的材料，T _g是使用双官能硫醇、脂肪族乙烯基单体和基于聚氨酯的二丙烯酸酯获得的。该配方具有替代丙烯酸酯基粘合剂的良好潜力，因为它能够在短时间内在氧气存在下聚合，并且对基材具有快速粘合力和非常好的粘合剂/内聚比。