Paraffin-SiO2-TiO2 phase change microcapsule and preparation method thereof as well as application of microcapsule in preparing heat-accumulation thermal insulation coating
A technology of -sio2-tio2, phase-change microcapsules, applied to paraffin-SiO2-TiO2 phase-change microcapsules, the preparation of the above-mentioned phase-change microcapsules, the application field of phase-change microcapsules in the preparation of heat storage and thermal insulation coatings, can Solve the problems of insufficient adsorption of organic phase change materials, low thermal conductivity of phase change microcapsules, and can not be used as a surface layer, etc., to achieve excellent heat storage and heat preservation performance, reduce indoor environment fluctuations, and improve thermal comfort
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Embodiment 1
[0025] A paraffin / SiO 2 -TiO 2 Phase change microcapsules, including SiO 2 -TiO 2 The capsule wall and the phase-change material sealed in the capsule wall, the phase-change material is paraffin, and the TiO 2 attached to SiO 2 surface.
[0026] Paraffin / SiO above 2 -TiO 2 The preparation method of phase-change microcapsules, comprises the steps:
[0027] Step 1, add 20g of secondary deionized water to the three-necked flask, adjust the pH of the solution to 2 with hydrochloric acid, add 10ml of ethanol and 10.4g of tetraethyl orthosilicate to the deionized water in sequence, and stir at 60°C until it is in the form of a sol;
[0028] Step 2, dissolving 10g of paraffin in 100% deionized water, then adding sodium lauryl sulfate with 1% paraffin mass to the solution, and ultrasonically emulsifying the solution to obtain a milky white emulsion;
[0029] Step 3, add the emulsion of step 2 into the sol of step 1, stir, after stirring, wait for the liquid to cool and put it ...
Embodiment 2
[0035] A paraffin / SiO 2 -TiO 2 Phase change microcapsules, including SiO 2 -TiO 2 The capsule wall and the phase-change material sealed in the capsule wall, the phase-change material is paraffin, and the TiO 2 attached to SiO 2 surface.
[0036] Paraffin / SiO above 2 -TiO 2 The preparation method of phase-change microcapsules, comprises the steps:
[0037] Step 1, add 20g of secondary deionized water to the three-necked flask, adjust the pH of the solution to 2 with hydrochloric acid, add 10ml of ethanol and 10g of tetraethyl orthosilicate to the deionized water in sequence, and stir at 60°C until it is in the form of a sol;
[0038] Step 2, dissolving 20 g of paraffin in 120 deionized water, then adding sodium lauryl sulfate with 1% paraffin mass to the solution, and ultrasonically emulsifying the solution to obtain a milky white emulsion;
[0039] Step 3, add the emulsion of step 2 into the sol of step 1, stir, after stirring, wait for the liquid to cool and put it in...
Embodiment 3
[0045] A paraffin / SiO 2 -TiO 2 Phase change microcapsules, including SiO 2 -TiO 2 The capsule wall and the phase-change material sealed in the capsule wall, the phase-change material is paraffin, and the TiO 2 attached to SiO 2 surface.
[0046] Paraffin / SiO above 2 -TiO 2 The preparation method of phase-change microcapsules, comprises the steps:
[0047] Step 1, add 30g of secondary deionized water into the three-necked flask, adjust the pH of the solution to 3 with hydrochloric acid, add 20ml of ethanol and 20g of tetraethylorthosilicate to the deionized water in sequence, and stir at 60°C until it is in the form of a sol;
[0048] Step 2, dissolving 30 g of paraffin in 150 deionized water, then adding sodium lauryl sulfate with 2% paraffin mass to the solution, and ultrasonically emulsifying the solution to obtain a milky white emulsion;
[0049] Step 3, add the emulsion of step 2 to the sol of step 1, stir, after stirring, wait for the liquid to cool and put it in ...
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