醇酸树脂酸值测定的溶剂绿色化研究  

Determination of Alkyd Resin Acid Value of the Solvent Green

作　　者：郑绍成[1] 周玉芬[2] 陈晓[1] 

机构地区：[1]浙江师范大学化学与生命科学学院,浙江金华321004 [2]金华职业技术学院材化学院,浙江金华321017

出　　处：《涂料工业》2010年第8期73-75,共3页Paint & Coatings Industry

摘　　要：醇酸树脂的生产控制中酸值是关键,目前大都采用中和法测定酸值,在酸值测定中一般所使用的溶剂为甲苯和乙醇混合物,由于甲苯对人体具有较大毒害性,本研究对醇酸树脂酸值测定中的溶剂进行了绿色化研究,比较了8种溶剂的毒性和挥发性,考察了柠檬烯与乙醇不同体积的混合比例对溶解醇酸树脂的影响,结果表明柠檬烯与乙醇混合的体积比为1∶1.5的互溶效果较好。并进行了修正,修正后的酸值测定的酸值之间最大相对误差小于0.36%。根据醇酸树脂的性质认为柠檬烯可以作为其酸值测定的溶剂,是较佳替代品。Acid value control is a key factor during production of alkyd resin. Generally a method of neutralization titration is applied to determine acid value. Toluene and ethanol acted as a component solvent is used for this method. Due to toxicity of toluene, a ＂green＂ research is conducted to compare 8 solvents in terms of toxicity and volatility, to examine the influence of limonene/ethanol ratio by volume on property of alkyd resin. Testing result indicates good mutual solubility for limonene and ethanol as mixed by ratio of 1： 1.5. Acid value determination is also modified to reach a max relative error less than 0. 36%. Based on property of alkyd resin, limonene can act as a good substituted solvent for determining acid value.

关 键 词：醇酸树脂 酸值 柠檬烯 溶剂绿色化 

分 类 号：TQ630.4[化学工程—精细化工]