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机构地区:[1]南京工业大学化学化工学院,江苏南京210009
出 处:《南京工业大学学报(自然科学版)》2007年第1期85-88,共4页Journal of Nanjing Tech University(Natural Science Edition)
摘 要:马来海松酸酐(MPA)具有良好的耐热性能,被用作制备耐热多元醇的原料而得到广泛研究.实验将含有耐热基团的新戊二醇(NPG)和MPA制备多元醇酯,以进一步提高产品的耐热性能.研究了反应体系的酸值变化,通过改变NPG与MPA的摩尔比,得到了具有较大羟值范围的系列产品.对产品进行了红外和热重表征.结果表明,MPA的三个羧基均发生了酯化反应,且反应较为彻底.酯化产物具有较高的初始失重温度,可作为耐热原料使用.Maleopimaric anhydride (MPA), which had good thermal stability, was mostly investigated as raw material for preparation of heat resistant polyol. In order to obtain better thermal stability products, polyester polyol was synthesized through the reaction of MPA with neopentyl glycol (NPG) which had heat resistant functional group. The change of acid value of reaction system was studied in details. Some kinds of products which had extensive range of hydroxyl value were prepared by changing the molar ratio of NPG/MPA. IR spectroscopy and thermal stability of products were discussed respectively. It was found that all carboxyl groups of MPA were esterified. The products which had high onset degradation temperature could be used as a heat resistant raw material.
分 类 号:TQ323.4[化学工程—合成树脂塑料工业]
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