Elastic-shell microcapsule phase change material and preparation method and application thereof
A technology of phase change materials and microcapsules, which is applied in the direction of microcapsule preparation, microsphere preparation, heat exchange materials, etc., can solve the problems of increased hardness of composite materials, and achieve the effects of less pollution, less hardness and simple preparation process
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Embodiment 1
[0027] (1) Add 100 g of deionized water to a three-necked flask, and add 5 g of paraffin wax with a melting point of 50° C. into the flask so that the mass concentration of paraffin wax in the mixed solution is 5%, raise the temperature to 60° C., and set the stirring speed to 500 rpm. Minute, keep stirring at 60°C for 0.5h;
[0028] (2) Add sodium dodecylbenzenesulfonate, the added mass is 3% of paraffin, keep the temperature and continue to stir for 0.5h;
[0029] (3) Continue to add divinyl quaternary ammonium salt, add vinyl-terminated polydimethylsiloxane whose mass is 3% of paraffin, viscosity is 500cp, add mass of 40% of paraffin, keep temperature and continue to stir for 0.5h ;
[0030] (4) Maintain the temperature and increase the stirring speed to 800 rpm, add benzoyl peroxide, the added mass is 30% of the siloxane, raise the temperature to 80°C, and react for 1 hour;
[0031] (5) Pour the reaction solution into a beaker, put it into a freeze dryer and freeze-dry i...
Embodiment 2
[0033] (1) Add 100 g of deionized water into a three-necked flask, take 10 g of paraffin wax with a melting point of 55°C and add it to the flask, raise the temperature to 80°C, set the stirring speed to 700 rpm, and keep stirring at 80°C for 1.5 hours;
[0034] (2) Add sodium dodecyl sulfonate, the added mass is 5% of paraffin, keep the temperature and continue to stir for 1.5h;
[0035] (3) Continue to add divinyl quaternary ammonium salt, add vinyl-terminated polydimethylsiloxane whose mass is 5% of paraffin, and whose viscosity is 1000cp, add mass of 60% of paraffin, keep the temperature and continue stirring for 1.5h,
[0036] (4) Maintain the temperature and increase the stirring speed to 900 rpm; add tert-butyl peroxybenzoate, the added mass is 45% of the siloxane, raise the temperature to 90°C, and react for 2 hours.
[0037] (5) Pour the reaction solution into a beaker, put it into a freeze dryer and freeze-dry for 3 hours to obtain an elastic shell microcapsule phase...
Embodiment 3
[0039] (1) Add 100 g of deionized water into a three-necked flask, take 15 g of paraffin wax with a melting point of 60°C and add it to the flask, raise the temperature to 90°C, set the stirring speed to 1000 rpm, and keep stirring at 90°C for 3 hours;
[0040] (2) Add sodium lauryl sulfate, the added mass is 8% of paraffin, keep the temperature and continue to stir for 3h;
[0041] (3) Continue to add divinyl quaternary ammonium salt, add 8% of paraffin wax, add polymethyl vinyl siloxane with a viscosity of 1000cp, add 90% of paraffin wax, keep the temperature and continue stirring for 3h ;
[0042] (4) Maintain the temperature and increase the stirring speed to 1000 rpm, add benzoyl dichloride, the added mass is 60% of the siloxane, raise the temperature to 95°C, and react for 3 hours;
[0043] (5) Pour the reaction solution into a beaker, put it into a freeze dryer and freeze-dry it for 5 hours to obtain an elastic shell microcapsule phase change material. The optical pho...
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