聚丙烯酸酯类的合成、表征及其对油品的降凝作用  

STUDIES ON THE SYNTHESIS AND CHARACTERIZATION OF POLY (n-ALKYL ACRYLATES) AND THEIR LOWERING EFFECT ON THE POURING-POINT OF OIL

作　　者：张维邦[1] 曾晖扬[1] 李卓美[1] 

机构地区：[1]中山大学高分子研究所

出　　处：《高分子材料科学与工程》1989年第5期24-29,共6页Polymer Materials Science & Engineering

摘　　要：本工作合成了酯基碳数为14～18的聚丙烯酸酯（PA）,并对它们的热性质、结晶性质、溶液性质以及降凝作用规律进行了研究,发现PA-16和PA-18对所试验油品均无降凝作用,仅PA-14对0^#柴油有效果,其降凝作用的规律与PMA-14基本相同,表明-CH₃的存在对降凝作用的影响不大。还发现PA-14与PMA-14除了长链酯的碳数相同外,它们在庚烷中的形态十分相似,支持了前文提出的降凝效果与分子链在溶液中的扩展形态密切相关的观点。Poly (n-alkyl acrylates) (PA) with the carbon numbers of the alkyl side chain C14-C18 were synthesized. Their thermal property, crystal property, solution property and the lowering effect on pouring point of oil were studied. It was found that PA-16 and PA-18 were ineffective, and PA-14 was effective only on lowering pouring-point of 0 diesel oil, as PMA-14 did. These means that the-CH8 group has less attribution to the effect of lowering pouring point of oil. We also found that the molecular dimension of PA-14 and PMA-14 were almost the same for the same length of ester group in the side chain. All these fact supported the result suggested in our provious paper that the molecular dimension of the polymer play an important role in the effect of lowering pouring-point of oil.

关 键 词：聚丙烯酸酯 合成 降凝作用 

分 类 号：O632.52[理学—高分子化学]