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SBS溶解性好,可与很多聚合物相容,非常适宜制备溶剂型胶黏剂。苯、甲苯、二甲苯是SBS树脂的良溶剂,但毒性大,故为SBS树脂选用LD50>5000 mg/kg的无毒溶剂-丙酮、乙酸乙酯和汽油调配混合溶剂。SBS弹性体本身并无粘接性,必须配合适当的增黏树脂改性。黏度是胶黏剂的重要技术指标。研究了汽油、丙酮和乙酸乙酯混合溶剂组分对黏度的影响。讨论了增黏树脂及其混合体系对黏度的影响。研究了增黏树脂含量和固含量对黏度的影响。结果表明,乙酸乙酯含量高,黏度低;添加增黏树脂混合体系比添加单一增黏树脂,黏度高;固含量高,黏度高;增黏树脂含量高,黏度低。乙酸乙酯含量、增黏树脂含量和固含量等是控制SBS溶剂型胶黏剂黏度的有效手段。
SBS good solubility, compatible with many polymers, very suitable for the preparation of solvent-based adhesives. Benzene, toluene and xylene are good solvents for SBS resins, but they are toxic. Therefore, SBS resin is a non-toxic solvent with LD50> 5000 mg / kg - acetone, ethyl acetate and petrol. SBS elastomer itself is not adhesive, must be properly tackified resin modified. Viscosity is an important technical indicators adhesive. The effects of the components of gasoline, acetone and ethyl acetate on viscosity were studied. The effects of tackifying resin and its mixture on viscosity were discussed. The effects of tackifier resin content and solid content on viscosity were studied. The results showed that the content of ethyl acetate was high and the viscosity was low. The addition of tackifying resin mixed system had higher viscosity than that of single tackifying resin, high solid content and high viscosity, high content of tackifying resin and low viscosity. Ethyl acetate content, tackifying resin content and solid content is an effective means to control the viscosity of SBS solvent-based adhesive.