WO2002098997A1

WO2002098997A1 - 'air conditioning type' construction coating and manufacturing process of the same

Info

Publication number: WO2002098997A1
Application number: PCT/CN2002/000376
Authority: WO
Inventors: Yiping Ma
Original assignee: Tongji University
Priority date: 2001-06-05
Filing date: 2002-05-31
Publication date: 2002-12-12
Also published as: CN1271150C; CN1389523A

Abstract

An 'Air-Conditioning Type' construction coating which employs the materials comprising a mixture of cobalt chloride and hexamethylene tetramine, phthalates and triarylmethane lactone of which the absorption-emission for the solar energy is reversible at room temperature, with the materials comprising vanadium oxide and tungsten oxide of which the thermal emissivity against ambient temperature exhibits high-and-low reversible conversion at room temperature in combination is disclosed, and it is produced by uniformly mixing the above-mentioned two portions of materials thoroughly, and then adding water soluble resins, fillers and water. The invention has great economical benefits and social benefits, and can alleviate environmental pollution and green-house effect largely. The invention is easy to be promoted and applied due to the wide variety of the source of the raw materials required and the easiness of the manufacturing process.

Description

"Air-conditioning type" architectural coating and manufacturing method thereof

The invention relates to an "air-conditioning" architectural coating and a method for manufacturing the same. Through the application on the building, the temperature of the space inside the building can be adjusted. Background technique

With the development of science and technology, people ’s living standards are increasing, and people ’s requirements for living conditions are becoming higher and higher, and people attach great importance to living in a comfortable temperature environment. To this end, people use various methods to improve the living environment and create a building thermal environment that meets people's expectations. At present, the commonly used methods are: 1. Structural measures: Open ventilation windows on the top of the house, increase the air convection in the summer season, and reduce the indoor temperature. This method is low cost, but it does not cool much during the high temperature season. To people's ideal ambient temperature. 2. Use cooling or heating equipment or devices to create the building's thermally comfortable environment, but this method not only consumes a lot of energy, but also causes air and environmental pollution. 3. Use solar energy to create a building's thermal and comfortable environment, such as: using Trombe walls, solar cells, TIM (Transparent Insulation Materials) materials, heat-collecting roofs, adjustable solar walls and other materials and devices to fully dispose Using solar energy, these methods and materials can solve environmental protection issues well, but their cost is high and the structure of the device is complex, which limits the popularization and application in buildings. 4. The use of solar reflective paint and light-colored paint can greatly reduce the temperature of the building surface, but the temperature of the building surface will also be greatly reduced during the winter season.太阳 Selective absorption coating with solar spectrum can increase the temperature of the building surface in winter, but the temperature of the building surface will increase more in summer. These two coatings have certain effects on temperature adjustment in their respective applicable environments, but they cannot fully handle and use solar energy in the winter and summer seasons, so they cannot be applied to buildings with seasonal changes. At present, there are no reports about architectural coatings that can reflect a large amount of solar energy, but also emit a large amount of heat, and can be reversibly converted into a large amount of solar energy and less heat.

In view of the lack of existing building thermal and comfortable environments and architectural coatings, the inventor has proposed a method that can reflect a large amount of solar radiation in summer and emit a large amount of its own heat after long-term research, and can spontaneously convert to a large amount of absorption in winter. Coatings with solar radiation and rarely emitting their own heat, that is, "air-conditioning" coatings that absorb the reversible conversion of emission ratio. Summary of the Invention The technical scheme taken by the present invention is: It is made by combining materials that absorb and emit solar energy with a reversible conversion at normal temperature and materials that have a thermal emissivity that changes reversibly with the ambient temperature at normal temperature, and absorbs and emits solar energy with a reversible conversion at normal temperature. The conversion materials are: a mixture of cobalt chloride and hexamethylenetetramine, phthalate and triarylmlactone; the materials whose thermal emissivity is reversibly changed with the ambient temperature are: vanadium oxide and tungsten oxide; in the above The two parts of the material are thoroughly mixed on the basis of miscellaneous and water-soluble resin, filler, water, in

Grinding at 500-1200 rpm for 20-25 minutes, the "air-conditioning type" architectural coating of the present invention is prepared, and its reversible conversion temperature is 18-20 ° C. Based on the total weight of the coating of the present invention, its composition is as follows:

Components-Mixture of cobalt chloride and hexamethylenetetramine

(Wherein cobalt chloride: hexamethylenetetramine

Phthalate

Triphenylmethane

Vanadium oxide

Tungsten oxide

Water-soluble resin

Filler

Water

The preparation process is as follows-first, the optional mixture of cobalt chloride and hexamethylenetetramine, phthalate, triarylmlactone, vanadium oxide and optional tungsten oxide are weighed according to the above proportion, Put it in a stirrer and mix thoroughly, then add water-soluble resin, filler, and water, and then stir and grind for 20-25 minutes.

The advantages of the present invention are as follows: because it adopts a mixture of cobalt chloride and hexamethylenetetramine, phthalate and triaryllactone, it can absorb solar energy at low temperature and reflect solar energy absorption at high temperature Emissive reversible conversion materials, and reversible conversion materials consisting of vanadium oxide and tungsten oxide with low emissivity at low temperature and high emissivity at high temperature, make use of physical and chemical changes of the material with temperature, such as crystal transformation, phase change , PH change, electron transfer, etc., so the present invention realizes the reversible conversion of heat absorption in winter and heat insulation in summer, thereby overcoming the existing solar selective absorption coatings only for winter, not summer, and solar reflection coatings only for summer It is not suitable for the shortcomings of winter and solves the problem of cold and hot summer in the human living environment. The invention also has great economic and social benefits, which can enable human beings to get rid of dependence on the earth's resources in solving the "warm" aspect of the basic needs of "warm and full," and can greatly reduce environmental pollution and the greenhouse effect. Because the raw materials required by the present invention are extensive and the manufacturing process is simple, it is easy to popularize and use. Brief Introduction

FIG. 1 is a schematic diagram of a manufacturing process of the present invention, and the present invention is further described with reference to the accompanying drawings. Specific implementation

The architectural coating of the present invention is prepared by putting 5-15% by weight of triarylmlactone and 2-7% by weight of vanadium oxide in a stirrer based on the total weight of the architectural coating. It is prepared after the resin, 35-41% by weight of filler and 14-33% by weight of water are continuously stirred and milled at 500-1200 rpm for 20-25 minutes. In the architectural coating of the present invention, 0-17 wt% phthalate, 0-4 wt% of a mixture of cobalt chloride and hexamethylenetetramine (wherein, cobalt chloride: hexamethylene) can be optionally added. Tetraamine = 1: 3 ~ 5) and 0-6 wt% tungsten oxide to further improve the temperature adjustment ability of the architectural coating of the present invention.

The phthalate used in the architectural coating of the present invention is selected from dimethyl phthalate, diethyl phthalate, or a mixture thereof.

The triarylmethanelactone used in the architectural coating of the present invention is selected from the group consisting of triphenylmethane lactone, triphenylmethane propiolactone, or a mixture thereof.

The filler used in the architectural coating of the present invention is a filler commonly used in the architectural coating industry, and is preferably selected from titanium dioxide, limestone powder, kaolin powder, or a mixture thereof.

The water-soluble resin used in the architectural coating of the present invention is a water-soluble resin commonly used in the architectural coating industry, and is preferably selected from water-soluble urea-formaldehyde resin, water-soluble phenol-formaldehyde resin, water-soluble epoxy resin, or a mixture thereof.

The following further describes the present invention with reference to the examples, but these examples should be considered as illustrative only and should not be used to limit the present invention. Example 1.

7 parts by weight of dimethyl phthalate, 12 parts by weight of triphenylmethane lactone, 3 parts by weight of vanadium oxide and a total of 78 parts by weight of water-soluble urea-formaldehyde resin (solid content 40%, produced by Shanghai Xinhua Resin Factory), titanium White powder (passing through a 120 mesh sieve) and water, among which water-soluble urea-formaldehyde resin: titanium dioxide: water is 10%: 50%: 40%. The above materials are mixed uniformly and ground for another 30 minutes at a grinding speed of 500 rpm to prepare an "air-conditioning" architectural coating. Apply it on the exterior wall of a common brick-concrete building. Because the solar energy absorption and conversion material can absorb a large amount of solar energy at low temperatures, the thermal emissivity reversible conversion material is in a low emission state at this time, which can maintain the existing heat of the building. Therefore, it can increase the indoor temperature of the building by 6 ° in winter (measured by mercury thermometer, the same applies hereinafter); and in summer, because the solar energy absorption conversion conversion material has been converted to a state of a large number of reflected solar energy at high temperature, and the heat emissivity can be reversibly converted material At this time, it is in a high emission state and can be distributed in large quantities. The existing heat of the building can reduce the indoor temperature of the building by 6Ό in summer. Example 2

Using 2 parts by weight of a mixture of cobalt chloride and hexamethylenetetramine (cobalt chloride: hexamethylenetetramine = 1: 4), 10 parts by weight of diethyl phthalate, and 12 parts by weight of triphenylmethanepropane Lactone, 3 parts by weight of vanadium oxide, 2 parts by weight of tungsten oxide, and a total of 71 parts by weight of a water-soluble phenolic resin (38% solid content, produced by Shanghai Tianshan Chemical Plant), limestone powder (passing a 160 mesh sieve), water, among which Water-soluble phenolic resin: Limestone powder: 10% water: 50%: 40 Mix the above materials evenly and grind for another 50 minutes at a grinding speed of 1200 rpm to prepare an "air-conditioning" architectural coating. Apply it on the exterior wall of a common brick-concrete building. Because the solar energy absorption and conversion material can absorb a large amount of solar energy at low temperatures, the thermal emissivity reversible conversion material is in a low emission state at this time, which can maintain the existing heat of the building. Therefore, it can increase the indoor temperature of the building by 10 ° C in winter; in summer, because the solar energy absorption conversion conversion material has been converted to a state of a large number of reflected solar energy at high temperature, and the heat emissivity reversible conversion material is in a high emission state at this time. It can dissipate a lot of the existing heat of the building, so it can reduce the indoor temperature of the building by 10 ° C in summer. Example 3

17 parts by weight of dimethyl phthalate, 5 parts by weight of triphenylmethane lactone, 7 parts by weight of vanadium oxide, and a total of 71 parts by weight of water-soluble epoxy resin (42% solid content, produced by Shanghai Xinhua Resin Factory) , Kaolin powder (passed through a 120 mesh sieve), water combination, among which water-soluble epoxy resin: Kaolin powder: 10% water: 50%: 40% The above materials are mixed uniformly, and then ground for another 20 minutes, the grinding speed is 1000 rpm / Minutes, you can prepare "air-conditioning" architectural coatings. Because the solar energy absorbing reflection conversion material can absorb a large amount of solar energy at low temperature, and the thermal emissivity reversible conversion material is in a low emission state at this time, it can maintain the existing heat of the building, so it can increase the indoor temperature of the building by 10Ό in winter; In summer, since the solar energy absorption conversion conversion material has been converted to a state that reflects a large amount of solar energy at high temperature, and the thermal emissivity reversible conversion material is in a high emission state at this time, a large amount of heat existing in the building can be lost, so it can be used in summer. Reduce the indoor temperature of the building by 10 ° C. Example 4

Using 4 parts by weight of a mixture of cobalt chloride and hexamethylenetetramine (wherein cobalt chloride: hexamethylenetetramine = 1: 3), 15 parts by weight of triphenylmethanepropiolactone, 2 parts by weight of vanadium oxide, 6 Part by weight of tungsten oxide is compounded with a total of 73 parts by weight of water-soluble phenolic resin, titanium dioxide, and water, wherein the water-soluble phenolic resin: titanium dioxide: water is 30%: 50%: 20%. Mix the above materials evenly and grind for another 50 minutes at a grinding speed of 1200 RPM, you can prepare "air-conditioning" architectural coatings. Because the solar energy absorbing reflection conversion material can absorb a large amount of solar energy at low temperature, and the thermal emissivity reversible conversion material is in a low emission state at this time, it can maintain the existing heat of the building, so it can increase the indoor temperature of the building by 12Ό in winter; In summer, since the solar energy absorption conversion conversion material has been converted to a state that reflects a large amount of solar energy at high temperature, and the thermal emissivity reversible conversion material is in a high emission state at this time, a large amount of heat existing in the building can be lost, so it can be used in summer. Reduce the indoor temperature of the building by 12 ° C.

Claims

1. "Air-conditioning" architectural coatings, which are characterized by:

Based on the total weight of the coating, its components are:

Mixture of cobalt chloride and hexamethylenetetramine

Where cobalt chloride: hexamethylenetetramine = 1: 3

Phthalate

Triphenylmethane

Vanadium oxide

Tungsten oxide

Water-soluble resin

Filler

Water

Coating reversible transition temperature is 18-20 ° C.

2. The coating according to claim 1, wherein the phthalate is selected from dimethyl phthalate, diethyl phthalate, or a mixture thereof.

3. The coating according to claim 1, characterized in that the triarylmethanelactone is selected from the group consisting of tribenzamide, acetolactone, tribenzide, propiolactone or a mixture thereof.

4. The coating according to claim 1, wherein the filler is selected from the group consisting of titanium dioxide powder, limestone powder, kaolin powder, or a mixture thereof.

5. The coating according to claim 1, wherein the water-soluble resin is selected from a water-soluble urea-formaldehyde resin, a water-soluble phenol resin, a water-soluble epoxy resin, or a mixture thereof.

6. The method for manufacturing a coating according to claim 1, wherein an optional mixture of cobalt chloride and hexamethylenetetramine, phthalate, triarylmlactone, vanadium oxide and Optional tungsten oxide is weighed according to the ratio of claim 1, placed in a stirrer and mixed well, and then added water-soluble resin, filler, and water, and then stirred and milled at 500-1200 rpm for 20 ~ 25 Made in minutes.