聚酯亚胺多元醇酸值是聚氨酯的一个重要指标.通常测定酸值时,一般使用酚酞作为指示剂.但是对于改性聚酯多元醇,用酚酞作为指示剂其终点难以判断,故采用电位滴定法测聚酯亚胺多元醇的酸值,同时使用各种酸碱指示剂用来指示滴定终点,结合两者得出一个最佳的指示剂.研究表明溴百里酚蓝为测定聚酯亚胺多元醇测定酸值最合适的指示剂.提供了聚酯亚胺多元醇起始电位值与酸值的标准曲线图,能快速、简便地查出相同条件下不同样品的酸值.
参考文献
| [1] | 左晓兵,蒋锡群,杨昌正.芳香酸改性酰胺酰亚胺聚氨酯的合成与性能[J].高分子材料科学与工程,2003(06):96-99. |
| [2] | Bibiao Jiang;Jianjun Hao;Wenyun Wang;Luxia Jiang;Xinxian Cai .Synthesis and thermal properties of poly(urethane-imide)[J].Journal of Applied Polymer Science,2001(3):773-781. |
| [3] | Somani K;Kansara S;Parmar R et al.High Solids Polyurethane Coatings from Castor - Oilbased Polyester - Polyols[J].International Journal of Polymeric Materials,2004,53:283-294. |
| [4] | Wamprecht C;Pires R;Freudenberg U et al.Polyesterpolyols having Cyclic Imide and Isocyanurate Groups are Useful in Two Component or One Component Coating Compositions for Auto Repair, Vehicle Coating or General Industrial Coating[P].德国专利,10 237 195,2004. |
| [5] | 倪玉德.涂料制造技术[M].北京:化学工业出版社,2003 |
| [6] | Emilio Marengo;Marco Bobba;Elisa Robotti;Marcello Lenti .Hydroxyl and acid number prediction in polyester resins by near infrared spectroscopy and artificial neural networks[J].Analytica chimica acta,2004(2):313-322. |
| [7] | Dutta N.;Karak N.;Dolui SK. .Synthesis and characterization of polyester resins based on Nahar seed oil [Review][J].Progress in Organic Coatings: An International Review Journal,2004(2):146-152. |
| [8] | 徐妙玲.聚酯多元醇中酸值的测定[J].聚氨酯工业,1994(02):38-40. |
| [9] | 顾庆超;楼书聪;戴庆平.化学用表[M].南京:江苏科学技术出版社,1979 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%