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本文研究了三元共聚物ＭＢＳ树脂和ＰＶＣＮＢＳ共混物的形态、结构及其相关性能。采用间歇加料法得到形态规整的核壳型树脂。改变三元组分比例和玻璃化转变温度（Ｔｇ）能大大影响ＰＶＣ增韧效果，当Ｂ＝４２％时Ｓ：Ｍ＝（３４～３０）：（２４～２８）为宜。ＤＳＣ测定结果表明：ＰＶＣ与ＭＢＳ的壳层ＰＭＭＡ能很好相容，从二相间的相容结构形态证实，共混物间形成良好的粘合界面层，通过透射电镜（ＴＥＭ）和扫描电镜（ＳＥＭ）观察到ＰＶＣＮＢＳ共混体系由脆性转变为韧性的结构形态和形貌特征，抗冲击值可由纯ＰＶＣ时的４ｋＪ／ｍ２增到ＭＢＳ１５份时的５０ｋＪ／ｍ２以上。
In this paper, the morphology, structure and related properties of the terpolymer MBS resin and PVCNBS blends were studied. The method of batch feeding was used to get the regular shape core-shell resin. Changing the ratio of ternary component and glass transition temperature (Tg) can greatly affect the toughening effect of PVC. When B = 42%, S: M = (34-30) :( 24-28) is suitable. The results of DSC showed that the shell PMMA of PVC and MBS could be well compatible. From the compatible morphology of the two phases, it was confirmed that a good adhesion interface layer was formed between the two composites. Transmission electron microscopy (TEM) and scanning electron microscopy SEM), the morphologies and morphologies of PVCNBS blends were changed from brittleness to toughness. The impact resistance of PVCNBS blends can be increased from 4kJ / m2 for PVC to 50kJ / m2 for MBS15.