摘要
将柠檬烯、苯乙烯及苯酚进行阳离子共聚,对聚合物苯酚改性柠檬烯苯乙烯树脂(PLS树脂)加氢反应,得到软化点为97.5℃,羟值为7.9 mg/g、加纳色号小于1的氢化苯酚改性柠檬烯苯乙烯树脂(HPLS树脂)。采用红外光谱、凝胶渗透色谱、核磁共振波谱等方法对HPLS树脂进行了表征。同时将HPLS树脂应用于制备压敏胶,所得压敏胶粘接效果良好。并通过正交试验获得粘接效果良好的压敏胶的制备条件:将15 g苯乙烯-异戊二烯-苯乙烯嵌段共聚物(SIS-1105)、5 g氢化萜烯树脂(HT-100)、5 g氢化C5石油树脂(HC5)、5 g环烷油-4010、5 g邻苯二甲酸二辛酯(DOP)、10 g HPLS树脂、0.25 g抗氧剂2,6-二叔丁基4-甲酚在210℃加热混合,此条件下制备的压敏胶,初粘力25号,持粘力5.26 h,180°剥离强度达到5.15 N/cm。HPLS树脂制备的压敏胶耐候性好,重复粘接对应的180°剥离强度损失率均小于传统萜烯树脂(HT-100)制备的压敏胶,重复使用性能好,有较好的应用前景。
The cationic copolymerization of limonene,styrene and phenol was carried out,and the polymer phenol-modified limonene-styrene resin(PLS resin)was hydrogenated to obtain a hydrogenated phenol-modified limonene-styrene resin(HPLS resin)with a softening point of 97.5℃,a hydroxyl value of 7.9 mg/g,and a Gardner color number less than 1.The HPLS resin was characterized by infrared spectroscopy,gel permeation chromatography,nuclear magnetic resonance spectroscopy and other methods.At the same time,the HPLS resin was applied to the preparation of pressure sensitive adhesives(PSAs),and the obtained pressure sensitive adhesives exhibited excellent bonding performance.Optimal preparation conditions for high-performance PSAs were determined through orthogonal experiments.Specifically,15 g SIS-1105,5 g HT-100 resin,5 g HC5 resin,5 g naphthenic oil-4010,5 g DOP,10 g HPLS resin and 0.25 g antioxidant were heated and mixed at 210℃.Under these conditions,the resulting PSAs exhibited an initial tack of No.25 ball,holding time of 5.26 h,and 180°peel strength reached 5.15 N/cm.Moreover,the HPLS-based PSAs had superior weather resistance compared to conventional terpene resin-based adhesives,and the loss of 180°peel strength after repeated testing,indicated excellent reusability and significant application potential.
作者
赵轩
韦伟
李浩
黄云
李军
雷福厚
ZHAO Xuan;WEI Wei;LI Hao;HUANG Yun;LI Jun;LEI Fuhou(School of Chemistry and Chemical Engineering,Guangxi Minzu University,Key Laboratory of Chemistry and Engineering of Forest Products,State Ethnic Affairs Commission,Guangxi Key Laboratory of Chemistry and Engineering of Forest Products,Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products,Nanning 530008,China;Guangxi Dinghong Resin Co.,Ltd.,Chongzuo 532200,China)
出处
《生物质化学工程》
2025年第4期91-100,共10页
Biomass Chemical Engineering
基金
广西重点研发计划项目(桂科AB19245022)
广西自然科学基金项目(2024GXNSFAA010378)。
关键词
柠檬烯
阳离子聚合
氢化反应
压敏胶
limonene
cationic polymerization
hydrogenation
pressure sensitive adhesive
