【作者】 赵秀英；

【导师】 张丽叶； 吴立峰；

【作者基本信息】 北京化工大学 ， 材料加工工程， 2000， 硕士

【摘要】 本论文通过一系列实验，对ABS色母粒的分散性及其所用分散剂进行了系统的研究：研究了色母粒用不同种类的聚乙烯蜡的结构与性能，探讨了影响聚乙烯蜡性能指标的因素并分析了不同聚乙烯蜡对色母粒流变性能和着色剂分散性能的影响；研究了ABS色母粒常用分散剂和新型分散剂，并详细分析了不同种类、不同用量的分散剂对ABS色母粒的流变性能和着色剂分散性能的影响。 结果表明：国内外聚乙烯蜡在性能指标上有所异同。国产与进口聚乙烯蜡的分子量分布系数存在很大差异，并且分子量分布系数是造成聚乙烯蜡的应用性能差异的主要因素。除HDPE低分子物外，各种牌号的聚乙烯蜡热稳定性能良好。在灰分含量低的聚乙烯蜡中，影响色母粒黑点含量的主要因素不在于聚乙烯蜡的灰分含量，而取决于它的制备工艺。进一步地研究发现高质量的聚乙烯蜡在制备工艺、分子量分布状况以及改性加工方面与普通聚乙烯蜡有所差异，并且可以通过适当地改善聚乙烯蜡的制备工艺和进行改性加工来提高聚乙烯蜡的质量和档次。 通过大量的ABS色母粒的制备研究确定了ABS炭黑色母粒适用的分散剂，并对其分散机理进行了探讨；以及对ABS色母粒的流变性能和炭黑分散性深入研究，表明分散剂对着色剂的分散效果与分散剂的极性密切相关。更多还原

【Abstract】 This thesis aims at the study of dispersity and dispersants for ABS color masterbatch. The structure and property of polyethylene waxes made by different factories is studied. Factors, which affect the characteristic of polyethylene waxes, are probed. And the effect of which on the rheological property of color masterbatch and dispersion of pigments is analyzed. General dispersants and original dispersants for ABS color masterbatch are researched and their effects on the rheological property of ABS color masterbatch and dispersion of pigments are discussed in detail.The results show that the structure and property of domestic polyethylene waxes are different from that of those made abroad. There are great differences in their molecular weight and distribution coefficient, which are the main factors affecting the applied performance of polyethylene wax. Melting point of polyethylene wax is between 98℃ and 108℃ in a general way and it exists in certain temperature range. Except byproduct of HDPE, thermal stability of other various brands polyethylene waxes is excellent. It is obvious that the rheological property and dispersity of color masterbatch are improved with the addition of polyethylene wax. Further research indicates that high performancepolyethylene wax is different from general ones in the ways of prepared technics, molecular distribution and improvement etc., by which the performance of polyethylene wax is improved.Dispersant suited for ABS carbon black masterbatch is decided through lots of study, and the mechanism of dispersion is discussed, too. Further research indicates that there is close relation between dispersion of pigments and polarity of dispersants on the rheological property of ABS color masterbatch and dispersion of carbon black.更多还原