论文部分内容阅读
以BA(丙烯酸丁酯)为软单体、MMA(甲基丙烯酸甲酯)为硬单体、TPGDA(二缩三丙二醇二丙烯酸酯)为交联单体、DMA(N,N-二甲基苯胺)为促进剂、CHP(过氧化氢异丙苯)为引发剂、轻质碳酸钙为填料和CHP/DMA为氧化-还原引发剂,采用共混法制备了双组分室温快速固化黏合剂。研究结果表明:随着黏合剂中MMA/交联单体质量比的减小,黏合剂的维卡软化温度降低、拉伸剪切强度增大,但本体拉伸强度变化不明显;随着预聚体中MMA/BA质量比的增加,黏合剂的本体拉伸强度增大、维卡软化温度升高,但拉伸剪切强度变化不明显。当预聚体中m(MMA)∶m(BA)=80∶20、黏合剂中m(MMA)∶m(交联单体)=3∶1时,黏合剂的综合性能相对最好,其拉伸剪切强度(为19.6 MPa)相对最大。
In this paper, BA (butyl acrylate) as soft monomer, MMA (methyl methacrylate) as hard monomer, TPGDA (tripropylene glycol diacrylate) as crosslinking monomer, DMA (N, N-dimethyl Aniline) as accelerant, CHP (cumene hydroperoxide) as initiator, light calcium carbonate as filler and CHP / DMA as redox initiator, the two component RTV curing adhesive . The results show that with the decrease of the mass ratio of MMA / crosslinking monomer in the adhesive, the Vicat softening temperature of the adhesive decreases, the tensile shear strength increases, but the bulk tensile strength does not change significantly. The mass ratio of MMA / BA in the polymer increases, the tensile strength of the binder increases, Vicat softening temperature increases, but the tensile shear strength changes insignificantly. When the molar ratio of m (MMA): m (BA) = 80:20 in the prepolymer and m (MMA): m (crosslinking monomer) = 3:1 in the adhesive, the adhesive performance is the best. Tensile shear strength (19.6 MPa) is relatively maximum.