Study on preparation and characterization of microcapsules used in polyurethane material

• Main Authors: Ying-Rong He, 何盈融
• Other Authors: Wen-Chang Shih
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/07478220168044241256

碩士 === 國立勤益科技大學 === 化工與材料工程系 === 101 === The polyurethane material, is a very wide range of polymer materials, the preparation of the material is the reaction by the isocyanate group with the polyol mixture, by hydrogen atom transfer gradual addition polymerization reaction of the main chain has a urethane the group of chemical structure. Therefore, in the reaction mixture,select a different number and type of functional group of different structure,as well as the synthesis of different way, can be prepared showing excellent performance, a wide variety of polyurethane products. In this paper, microcapsules technology applied to the catalyst encapsulated on the polyurethane products, by microencapsulation can improve the stability of the catalyst and to delay the reaction of the catalyst on the polyurethane material. Also, the encapsulated catalysts can be based on the need temperature release catalyst and into the mixture of polyurethane to conduct reaction. In this study, we success to prepare the microcapsules containing catalyst by phase -separation technology and can control reaction time and reaction temperature of polyurethane in use as well as greater flexibility and diversity in the preparation of the elastomeric products. The microcapsules catalyst can applied to the thinner PU foam by delaying the reaction and can continuity prepared thinner samples and applied this technology enter to the cushion pads.