新型聚丙烯酸酯类柴油降凝剂分子模型的建立及验证

在前期工作得出的正构烷烃含量与浊点、冷滤点、凝点的定量关系模型基础上，选择柴油降凝剂的基团对柴油降凝剂分子结构进行了设计，得出了设计模型。结果表明，将含氮基团引入柴油降凝剂可以显著提高柴油降凝剂的性能。根据设计模型合成了一系列聚丙烯酸单酯和混合酯柴油降凝剂，并通过对柴油降凝剂的性能测试结果和自行设计的计算程序对设计模型进行了验证，结果表明，从柴油正构烷烃含量对柴油降凝剂的配比进行设计是可行的。

DESIGN AND VERIFICATION OF MOLECULE MODEL ABOUT A NEW-TYPE POLYACRYLATE FOR DIESEL OIL POUR POINT DEPRESSANT

The n-alkane content is one of the most important aspects to relate the cryogenic properties of the diesel oil. We can accord to the n-alkane content to design the pour point depressant for diesel oil. On the basis of the mathematical model of the relationship between the n-alkane content and the cryogenic properties of the diesel oil, by selecting the functional group of the diesel oil pour point depressant, the molecule design model of the new-type depressant is obtained. The ratio of different length carbon chains can be calculated by the program developed in our laboratory. According to the designed model, a series of diesel oil pour point depressants with different carbon chains are synthesized. As a result, we can prepared different pour point depressants for different diesel oil. By evaluating the performance of polyacrylate as pour point depressant, the designed model is verified.