【作者】 吴波震；

【导师】 邱桂学；

【作者基本信息】 青岛科技大学 ， 高分子化学与物理， 2007， 硕士

【摘要】 本文重点研究了聚氯乙烯(PVC)与ABS的共混合金在不同配比下的各项性能。同时研究了加工工艺、ABS种类、PVC聚合度、第三组分对ABS／PVC共混体系力学性能、耐热性能、相容性的影响，以期制备出一种柔软的并且具有较高耐热性能的材料，使其能够满足高档汽车仪表板用吸塑片材的需要。本试验选用PVC(SG-3)型和PVC(SG-5)型两种树脂，在添加不同含量DOP后与三种ABS(PA747、750、PA727)在不同配比下分别进行共混。通过对不同配比体系的力学性能、耐热性能、加工性能等测试，确定了PVC／ABS共混物综合性能最佳时两种树脂型号、配比、工艺条件以及最优的DOP用量。试验结果表明：共混合金的相容性和宏观性能与体系中PVC和ABS的配比有关，在体系内PVC与ABS的配比为70／30(份数比)时，共混体系的各项综合性能较好，其中体系PVC(SG-3)／ABS747(70／30)的各项性能最佳。同时我们还利用DSC法和SEM法对PVC／ABS共混合金试样断面结构以及其两相的相容性进行了表征。试验结果显示尽管PVC与ABS的溶解度参数接近，但PVC／ABS共混体系仍属于半相容体系。试验选用CPE、NBR和ACR等第三组分作为增容剂添加到PVC／ABS747(70／30)体系中，对原体系进行增容改性。结果可以确定当CPE、NBR、ACR以一定配比加入到原体系中后，体系的各项性能均有适当的提高，由DSC及SEM等手段表征的结果也验证了这一点。由此可以证明在原体系中以一定的配比加入第三组分确实能够改善原PVC／ABS共混体系的相容性，获得综合性能更好的三元共混合金，能够满足高档汽车仪表板用吸塑片材的各项性能要求。更多还原

【Abstract】 The compatibility between PVC and ABS was mainly discussed in thisdissertation. Meanwhile, the effects of the processing conditions, the types of ABS, thedegree of polymerization of PVC, the different kinds of compatibilizers on mechanicalproperties, thermal properties, compatibility of ABS/PVC blends were studied. At last,the PVC/ABS alloy with high performances was abtained which can meet therequirements of panels in automobiles.Two types of PVC resins (SG-3 and SG-5) with different contents of platicizers(DOP) were blended respectively with three types ABS (PA747, PA727 and 750)according to different recipes. Through tests about tensile strength, impact strength,thermal deformation and rheological property, the best recipe of PVC/ABS blends wasfinally decided, which includs 40phr of DOP, PVC (SG-3), ABS (PA747) and so on.The results also showed that the performances of PVC/ABS blends are relevant to it’scompositions. When the blend ratio of PVC/ABS is 70/30 the performance is superiorto others’. And the performance of PVC (SG-3)/ABS (PA747) (70/30) blends is thebest of all. The DSC method and SEM method were also used in study oncompatibility and the section structure of PVC/ABS blends.Although the solubility parameters of PVC and ABS are very close to each other,the results showed PVC/ABS blends is semi-compatibility system. So the thirdcomponent (such as CPE, NBR, ACR) were added into PVC/ABS (70/30) blends toimprove the compatibility of PVC and ABS. The behaviers of the alloy can beimproved when CPE, NBR and ACR were added into the original blending systemwith proper contents. The results by DSC and SEM also proved that the compatibilityof PVC/ABS could be improved when the third component was added with propercontents.更多还原