Preparation of Non-Isocyanate PU Resin via a Carbonate Process- Traditional Epoxy Resin as a Raw Material -

• Main Authors: Feng-Ren Wu, 吳豐任
• Other Authors: Kan-Nan Chen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/77819248996233896284

碩士 === 淡江大學 === 化學學系碩士班 === 97 === The present paper uses “Isocyanate-Free Process” which developed from the laboratory to prepare aqueous-based polyurethane dispersion. Besides, by changing the choice and synthesis ration of the compound, we discuss the natural influence factors of material. Using the (NPEL-128; EEW = 187) to be a start material, Bis(cyclic carbonate)s were prepared through the nucleophilic addition reaction of CO2. Then, to polymerize with two different types of molecular weight of amine, BDBA (1,4-butanediol bis(3-aminopropyl) ether; MW = 204.31) and Jeffamine® D-2000 (MW = 2000), then through the Half-Esterification Reaction of maleic anhydride, and adding the neutralization which is formed by carboxylic group with appropriate amount of base. Finally, the Aqueous-Based Polyurethane Dispersion was formed. Adjusting the synthesis ration of the start material and amine(128-Car : Amine = 1 : 0.9; 1 : 1.0; 1 : 1.1) partly, then react. After, adding the bridging reagent TMPTA-AZ into the Aqueous-Based Polyurethane Dispersion and react with the carboxylic groups of PU segment to form the three dimensional net working structure. And try to discuss the physics, thermal stability, mechanical properties of the film in a different synthesis ration of materials.