单组分自交联溶剂型丙烯酸酯压敏胶的制备及应用研究

Preparation and application of one-component self-crosslinking solvent-based acrylate pressure sensitive adhesive

采用了一种自交联功能单体N-羟甲基丙烯酰胺(NMA),通过自由基聚合方式,制备了一种单组分可自交联无苯溶剂型丙烯酸酯压敏胶。系统研究了自交联单体含量对压敏胶剥离力、黏度、持粘性能和转化率的影响,优选出了NMA最佳使用量。研究结果表明:当自交联单体NMA添加质量分数为0.2%时,压敏胶的剥离力、黏度符合要求,耐温性能优异,65℃高温持粘时间增至10 h,单体转化率较高(达95.2%)。将制得的压敏胶涂布于基材,应用于地毯保护膜,30 d后无翘边现象,且所用溶剂无甲苯,具有环保、低毒优势,证明了本产品具有一定的应用前景。

A kind of one-component self-crosslinking benzene-free solvent-based acrylate pressure sensitive adhesive was prepared by free radical polymerization using a self-crosslinking functional monomer Nhydroxymethylacrylamide(NMA).The effects of self-crosslinking monomer content on the peel strength,viscosity,holding power,and conversion rate of pressure sensitive adhesive were systematically studied,and the optimal amount of NMA was selected.The research results showed that when the mass fraction of self-crosslinking monomer NMA added was 0.2%,the peel strength and viscosity of pressure sensitive adhesive met the requirements,and the temperature resistance performance was excellent.The high-temperature holding time at 65℃increased to 10 h,and the monomer conversion rate was high(up to 95.2%).The prepared pressure sensitive adhesive was coated on the substrate and applied to the carpet protective film.After 30 days,there was no curling phenomenon,and the solvent used was toluene-free,which had the advantages of environmental protection and low toxicity,proving that this product had certain application prospects.