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Hydrophobic heat-insulation coating and preparation method therof

A heat-insulating coating and hydrophobic technology, applied in the direction of chemical instruments and methods, coatings, fibrous fillers, etc., can solve the problems of ordinary exterior wall emulsion paints such as water resistance, insufficient weather resistance, and damage to the beauty of buildings, and achieve low prices , cost reduction effect

Inactive Publication Date: 2017-02-08
广东慧信环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The water resistance and weather resistance of ordinary exterior wall latex paint are insufficient, especially affected by rainwater and sewage, which greatly damages the appearance of the building

Method used

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  • Hydrophobic heat-insulation coating and preparation method therof
  • Hydrophobic heat-insulation coating and preparation method therof
  • Hydrophobic heat-insulation coating and preparation method therof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] 1. TiO 2 Preparation of Coated Hollow Glass Microspheres

[0123] TiO 2 The preparation process of coated hollow glass microspheres is as follows:

[0124] (1) Measure 30ml of absolute ethanol and 10ml of butyl titanate into a three-necked flask, and stir for 10min at a temperature of 28°C at a speed of 1800 rpm until uniform;

[0125] (2) Add 3ml of glacial acetic acid into the three-necked flask, stir evenly, add 10ml of hollow microspheres, and stir for 20min at a temperature of 28°C at a speed of 1800 rpm until uniform;

[0126] (3) Mix 30ml of absolute ethanol and 3ml of water in a beaker and add it to the separatory funnel, and slowly drop it into the three-necked flask at a temperature of 28°C for 18 minutes;

[0127] (4) With a rotating speed of 1800 rpm, stirring and reacting for 1 h;

[0128] (5) After standing for 24-48 hours, put the product in an oven at 100°C to dry;

[0129] (6) After drying, place the product in a calcination furnace at a temperatur...

Embodiment 2

[0143] In the case of keeping other raw materials unchanged, the effect of the emulsion on the performance of the hydrophobic and heat-insulating coating is investigated, as shown in Table 5:

[0144] The impact of table 5 emulsion on coating performance

[0145]

[0146] It can be seen from Table 5 that the thermal insulation coating made of silicone acrylic emulsion not only has higher conventional performance than the other two products, but also has better thermal insulation performance than the coatings made of the other two emulsions. It is concluded that the use of silicone acrylic emulsion in thermal insulation functional coatings can greatly improve the thermal insulation performance, film hardness, adhesion and other properties of the coating.

Embodiment 3

[0148] Under the condition of keeping other raw materials unchanged, the effect of defoamer on the performance of hydrophobic and heat-insulating coatings was investigated, as shown in Table 6:

[0149] Table 6 Comparison of defoaming effects of defoamers

[0150]

[0151] Through experiments, the defoaming effect of the coating is not satisfactory when only the silicone defoamer is used. Only by continuing to increase the defoamer can the coating be completely defoamed. Similarly, when only mineral oil defoamers are used, the defoaming effect of the paint is not ideal. Through the comprehensive use of the two defoamers, under the premise that the amount of defoamer is less, the coating has a perfect defoaming effect. Therefore, the present invention selects the comprehensive use of organosilicon type defoamer and mineral oil type defoamer (1:1) (weight ratio).

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Abstract

A hydrophobic heat-insulation coating comprises, by weight, 35-45% of an emulsion, 8-11% of a pigment, 4-7% of a heat-insulation functional filler, 10-12% of a body filler, 0.4-0.5% of a wetting agent, 1-1.5% of a dispersant, 0.5-0.6% of an antifoaming agent, 0.7-0.8% of a thickener, 1-2% of a film forming assistant, 7-10% of a hydrophobic agent, 0.3-2% of other assistants, and the balance of water. The heat-insulation functional coating prepared through coating hollow glass beads with TiO2 has the advantages of large heat resistance, low conductive coefficient, high photo-thermal reflectivity, effective reduction of radiative heat transfer and convective heat transfer and heat insulation effect, and nanometer anatase titanium dioxide has photocatalysis characteristic, effectively degrades formaldehyde, and plays a great role in solving of environment pollution and energy waste. The coating integrates the respective advantages of an aqueous coating, a hydrophobic coating and a heat insulation coating, and is a green and environmentally-friendly coating.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a novel hydrophobic heat-insulating coating and a preparation method thereof. Background technique [0002] With the depletion of available energy, energy-saving materials have attracted extensive attention of human beings. Heat-insulating coating is a new type of energy-saving material developed in recent years. It effectively reflects the energy of sunlight and reduces the absorption of solar radiation energy by the surface of objects, thereby achieving the effect of heat insulation. As a functional coating, thermal insulation coating can reduce the surface temperature of objects, prevent heat conduction, improve the working environment and improve safety. As in-depth research shows that it also has a certain role in the photocatalytic degradation of formaldehyde. [0003] Water-based paint is a kind of paint that is made by adding various materials such as film-...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/12C09C1/30C09C3/06
CPCC09C1/3054C09C3/063C09D143/04C08L71/02C08K13/06C08K5/103C08K2003/2241C08K9/10C08K7/28C08K3/346C08K3/34C08K2003/265Y02P20/10
Inventor 梁敏锐李宗强谭铭卓
Owner 广东慧信环保有限公司
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