Composite Phase Change Material By Sol - Gel Method And Its Applications In Textiles

Since the fashion and esthetic of the dressing are getting more and more attention, making the winter clothes light and warm, summer costume cool and pleasant, has become one of the focuses. The thermal-adaptable property of the phase change material (PCM) satisfies this request of people, which leads to its application. The main question in the process of development of PCM is the blind choosing of the PCM and the technology of combining PCM with fabric is very complicated, but the effect is not ideality. Coating technology is simple, but the production has the grease surface, which can not be adopted in industry.The main method of choosing PCM has been studied. Sol-Gel process has been introduced to prepare composite phase change materials (CPCM), which puts forward an innovative method to prepare organic-inorganic CPCM for solving problems of existing PCM included liquid leakage. The organic solid-liquid PCM was embedded in the net space of SiO₂ to produce organic-inorganic CPCM that has no liquid leakage and no toxicity and causticity. The influences of experimental conditions on products have been discussed and analyzed in theory. Furthermore, optimum operation conditions of pH value, reactive temperature, the proportion of ester and distilled water, the proportion of TEOS and ethanol, the proportion of phase change material and ethanol have been investigated. It was demonstrated by our research works that the composite phase change material had a high enthalpy and had no liquid leakage phenomena.The application of the CPCM-X on the textile has been investigated in detail. It has been demonstrated that the coated textile had excellent temperature-adaptable ability.