摘要
对对苯二甲酸改性松香聚酯多元醇的合成工艺及产品性能进行了研究。重点探索了对苯二甲酸加入量、反应时间、反应温度、催化剂等因素对反应的影响,利用红外光谱及化学分析法对改性松香聚酯多元醇结构进行了表征;结果表明,在松香105 g,对苯二甲酸45 g,二甘醇150 g,催化剂0.5 g,反应温度250℃,反应时间7 h的条件下,松香聚酯多元醇通过对苯二甲酸的改性,产品的酸值≤5 mg/g,羟值380～420 mg/g,黏度5.5～6.5 Pa.s,外观为棕红色,与传统松香聚酯多元醇酯化时间比较,由原来的9 h缩短到7 h;改性松香聚酯多元醇硬泡各项主要质量指标均达到国家标准GB/T20219-2006。
The synthesis technique and properties of rosin polyester pelyol modified by terephthalic acid was studied. The factors such as dosage of terephthalic acid, reaction time, reaction temperature and dosage of catalyst were investigated. The structure of rosin polyester polyol modified by terephthalic acid was characterized by infrared spectroscopy and chemical analysis. The products with properties of acid value ≤5 mg/g, hydoxy value 380 -420 mg/g and viscocity 5.5 -6.5 Pa · s was obtained under conditions of rosin 105 g, terephthalic acid 45 g, diethylene glycol 150 g, catalyst 0.5 g, reaction temperature 250 ℃ and reaction time 7 h. Comparing with the traditional rosin polyester polyol technology, the eserification time was reduced from 9 h to 7 h by adding the terephthalic acid. The application test showed that the properties of the modified rosin polyol foam reached the standard of GB/T 20219 -2006.
出处
《生物质化学工程》
CAS
2010年第1期5-8,共4页
Biomass Chemical Engineering
基金
国家863计划资助(2009AA05Z437)
浙江省与中国林业科学研究院省院合作项目(2005SY02)
国家自然科学基金资助项目(30700634)
关键词
对苯二甲酸
改性
松香聚酯多元醇
terephthalic acid
modification
rosin polyester polyol
