作　　者： ; ;

机构地区： 华南理工大学材料科学与工程学院高分子材料科学与工程系

出　　处： 《华南理工大学学报（自然科学版）》 1994年第6期133-139,共7页

摘　　要： 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。 The Organic morphology, structure and some properties of MBS resin andPVC/MBS blend have beed studied. Tile core-shell structure can be obtained bybatch feding of the monomers during polymerization. The toughening effect to PVCwas greatly influeced by the change in T9 and in tile composition of three componentsof MBS, and the optimum ratio was S:M= (34￣30):(24￣28) as B=42%. DSCshowed that the PMMA in the shell of MBS particles was compatible with PVC andInorphology observation proved the formation of an interfacial adhesive layer betWeenthe blended ingredients. By TEM and SEM, the morphology and structrre change inPVC/MBS blend was found from a brittle character to the tough. Tie impact strengthof the blend with 15 phr MBS was 50kJ/m2, comparing with 4kJ/m2 for pure PVCwithout MBS.

关 键 词： 形态 聚氯乙烯 结构 性能关系

领　　域： [理学] [理学]