Preparation and characteristics of new environmentally friendly adhesives for product packaging
In order to solve the problems of low peel strength and poor heat resistance of adhesive materials in product packaging under high temperature and high humidity environments,an environmentally friendly polyure-thane adhesive suitable for product packaging was prepared in an experiment,and KH-570 silane coupling agent and E-51 epoxy resin were used to modify,and then its properties were studied.The experimental results showed that adding KH-560 silane coupling agent to the adhesive enhanced its composite effect,and the material had good peel strength and heat resistance.Before high-temperature cooking,the addition of 1%KH-570 had the high-est peel strength at 27.65 N/(25 mm),an increase of 51.7%.However,after high-temperature cooking,the addi-tion of 1%KH-570 had the highest peel strength at 16.24 N/(25 mm),an increase of 64.4%.Before and after high-temperature cooking,the optimal amount of E-51 epoxy resin added was 10wt%,and the peel strength was 27.55 N/(25 mm)and 18.24 N/(25 mm),respectively,with an increase of 59.7%and 90.6%;This experiment de-termined that E-51 epoxy resin has the best modification effect on the adhesive.
new eco-friendly adhesivespeel strengthheat resistancesilane coupling agentepoxy resin
万方数据
维普
