作　　者： ; ; ;

机构地区： 佛山科学技术学院理学院化学与化工系

出　　处： 《合成橡胶工业》 2007年第2期102-106,共5页

摘　　要： 采用种子乳液接枝聚合技术合成了甲基丙烯酸甲酯（MMA）-丁二烯-苯乙烯树脂（MBS）,考察了复合乳化剂浓度、CO2用量对丁苯胶乳粒径及其分布、胶乳稳定性的影响;研究了接枝单体滴加方式和接枝聚合反应温度对MBS体系稳定性和接枝效率的影响;讨论了MBS改性聚氯乙烯（PVC）的影响因素;提出了丁苯胶乳的碳酸化扩径附聚法和MBS胶乳的SO2凝聚新工艺。结果表明：在丁二烯/苯乙烯（质量比）为90/10、阴离子/非离子复合乳化剂浓度为35-40g/L、丁苯胶乳采用CO2附聚扩径、部分MMA预溶胀和其余MMA连续滴加的方式以及MBS胶乳SO2凝聚新工艺的条件下,所得MBS树脂粉料颗粒均匀,40-180目的颗粒质量分数达96%,堆积密度在0.4g/cm^3以上;PVC/MBS（质量比为100/8）共混物的冲击强度达22.6kJ/m^2。 Methyl methacrylate （ MMA）-butadiene-styrene（MBS） resin was synthesized via seeding grafting emulsion polymerization technique. The effects of the concentration of complex emulsifier and the amounts of CO2 on particle size, distribution and stability of butadine-styrene latex were investigated. The adding type of MMA and the polymerization temperature on stability and grafting efficiency of MBS latex were studied. The influence fectors of MBS modified poly （ vinyl chloride） （PVC） were discussed. Moreover, new methods for agglomerating butadiene-styrene latex particles via carbonation and coagulating MBS latex by SO2 were proposed. The results showed that the MBS in which the mass fraction of powder was 96% at 40 - 180 mesh, and bulk density was above 0. 4 g/cm^3 was prepared when the mass ratio of butadiene/styrene was 90/10, the concentration of complex emulsifier was 35 -40 g/L, carbonation enlarged the particle size of butadienestyrene latex, part MMA was pre-swollen and others added continuously as well as SO2 was used. The impact strength of PVC/MBS （mass ratio was 100/8） was 22. 6 kJ/m^2.

关 键 词： 甲基丙烯酸甲酯 丁二烯 苯乙烯树脂 丁苯胶乳 聚氯乙烯 附聚法 共混物

领　　域： [化学工程]