Preparation and research of waterborne polyurethane phase change material 2

In this paper, the researcher first designed molecular structure of water-soluble polyurethane phase change material. Then, by taking HDI, PEG, chain extender (DMPA, BDO, EDA), catalyst (DBTDL) and neutralizing agent (TEA) as the main raw material, the author prepared waterborne polyurethane phase change material (WPUPC), which is available for wet spinning. The orthogonal design determined the optimal ratio of raw materials, namely, DMPA content is 7 wt%, R equals 6, emulsifying temperature is 30°C, the reaction temperature is 60°C and the reaction time is 180 min. What's more, WPUPCM was characterized utilizing FTIR, DSC-TG and TG-FTIR. A series of tests indicated that this experiment successfully prepared WPUPCM, which has the following advantages: reversible phase change process, high thermal stability, excellent thermal cycling stability, safety and environmental protection. It is foreseeable that this material has broad application prospects in the field of functional textiles.