Additive for thermal insulation paint and preparation method, and water-based paint containing additive
A technology of thermal insulation coatings and additives, applied in the direction of coatings, etc., can solve problems such as poor thermal insulation effect, and achieve the effects of good performance, cost reduction and simple process
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[0019] The present invention also provides a method for preparing an additive for thermal insulation coating, the method comprising the following steps:
[0020] S1. Preparation of microcapsules and vitrified microbeads: the phase change energy storage material is penetrated into the vitrified microbeads by the vacuum infiltration method to form the precursor of the microcapsule vitrified bead; then the precursor is placed in acrylic acid and the first nano-dioxide Microcapsules and vitrified microbeads can be obtained by immersing in the emulsion formed by silicon;
[0021] S2. Additive preparation: Add dispersant, modifier, thickener, and defoamer into water to fully disperse, then add microcapsules and vitrified beads to fully stir and mix, and finally add nano oxide and mix to obtain additives for thermal insulation coatings .
[0022] Preferably, the weight ratio of the waved microbeads, phase change material and emulsifier is 3-6:5-10:5-10. The phase change material and emuls...
Example Embodiment
[0029] Example 1
[0030] 1. Preparation of microcapsule waved beads: the vitrified beads with a particle diameter of 15um are used to infiltrate the phase change material into the vitrified beads by the vacuum infiltration method. The vacuum infiltration method is specifically: placing the phase change material in paraffin Heat and emulsify in a mixer at a heating temperature of 60°C, and then add vitrified beads with a particle size of 15um in a ratio of 5:3 by weight of the phase change energy storage material to the waved beads, and the vacuum degree is 120KPa After fully stirring under the conditions, filter and dry at room temperature. Then add the above-treated vitrified microbeads to the emulsifier according to the weight ratio of the emulsifier to the corrugated microbeads of 5:4, and the emulsifier is 20 parts of acrylic acid and 10 parts of nano silica The particle size of nano-silica is 20nm. Finally, it was stirred at a rotation speed of 1200 rpm for 2 hours, filt...
Example Embodiment
[0043] Example 2
[0044] 1. Prepare microcapsules and vitrified beads A2 according to the method of Example 1, except that: the particle size of the waved beads is 20um; the weight ratio of the waved beads, phase change energy storage material and emulsifier is 6 : 10:10; the emulsifier is an emulsion of 10 parts of acrylic acid and 5 parts of nano-silica, the particle size of the nano-silica is 10nm.
[0045] 2. Prepare additive sample B2 according to the method of Example 1, the difference is: each substance and content are as follows
[0046] Nano SiO 2 3%
[0047] Nano TiO 2 1.5%
[0048] Nano ZnO 2 1%
[0049] Microencapsulated vitrified beads 40%
[0050] BYK 5040 0.25%
[0051] BYK 5027 0.3%
[0052] KH-550 0.45%
[0053] Thickener 0.15%
[0054] Defoamer 0.20%
[0055] Water balance
[0056] 3. The water-based paint C2 was prepared according to the method of Example 1, except that the weight ratio of the additive to the water-based paint was 7:13.
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