【摘要】 采用高分子附聚法和醋酸附聚法获得了大粒径聚丁二烯胶乳(PBL),然后与丙烯腈(AN)和苯乙烯(St)发生乳液接枝聚合反应，制得了丙烯腈-丁二烯-苯乙烯共聚物(ABS)高胶粉。将ABS高胶粉与丙烯腈-苯乙烯共聚物(SAN)共混挤出，制得了ABS树脂。研究了2种附聚法对PBL的粒子形态、粒径大小、粒径分布指数以及ABS树脂性能的影响。结果表明：与醋酸附聚法PBL相比，高分子附聚法PBL的粒径分布指数更大，普遍大于0.10,粒径均一性更差，且存在团聚现象；高分子附聚法PBL接枝后出现黏结现象；由高分子附聚法PBL所得ABS样条断面无明显的“海-岛”结构，抗冲击性能普遍较差。更多还原

【Abstract】 Large particle size polybutadiene latex(PBL) was obtained by high molecular agglomeration method and acetic acid agglomeration method respectively, and then emulsion graft polymerization with acrylonitrile(AN) and styrene(St) was carried out to prepare acrylonitrile-butadiene-styrene copolymer(ABS) high rubber powder. ABS resin was prepared by blending and extruding ABS high adhesive powder with acrylonitrile styrene copolymer(SAN). The effects of two agglomeration methods on particle morphology, particle size, particle size distribution index of PBL and properties of ABS resin were studied. The results show that compared with acetic acid agglomeration method PBL, polymer agglomeration method PBL have a larger particle size distribution index, generally greater than 0.10, poorer particle size uniformity and the presence of agglomeration phenomenon. After grafting, polymer agglomeration method PBL shows a phenomenon of adhesion. The cross-section of the ABS spline obtained by polymer agglomeration method PBL does not have a clear “sea-island” structure, and its impact resistance is generally poor.更多还原