关键词: 枫香树脂, SIS型热熔胶, 初黏力, 剥离强度, 持黏力

Abstract: This article introduced the tackifying effect of Chinese sweetgum resin in styrene-three block copolymer of styrene isoprene-(SIS) hot melt adhesive (HMA). At the same time, the influence of some factors including the content, softening point, and the mixture ratio with terpene resin produced on the appearance, tack, retained adhesion, softening point, peeling strength, and glass-transition temperature of hot melt adhesive were discussed. The results showed that with the increase of content of sweetgum resin, the glass-transition temperature became high, the tack and 180°peeling strength increased firstly and then decreased and the retained adhesion decreased. The mixture of sweetgum resin of low-middle temperature could make the bonding better, and blending of different kinds of resins can achieve better adhesion properties. Under the condition of m(SIS):m(naphthenic 4010):m(tackifying resin):m(antioxidants)=38%:32%:30%:0.5%,including m(92℃sweetgum resin):m(94℃terpene resin)=2:1, hot melt adhesive had transparent appearance with no residue phenomenon, and the comprehensive performance of hot melt adhesive is the best. At the condition, the tack is 14#, peeling strength is over 600 N/m, and retained adhesion is over 72 h.

Key words: sweetgum resin, SIS-hot melt sensitive adhesive, tack, peel strength, retained adhesion