Thermal insulation paint and preparation method thereof

Abstract

The invention discloses a thermal insulation paint and a preparation method thereof. The invention belongs to the technical field of paint, by adding the efficient heat insulation filler and the reflective pigment, the heat conductivity coefficient of the coating is remarkably reduced, and conduction and radiation of heat can be effectively blocked; the coating disclosed by the invention has high adhesive force, can be firmly attached to the surfaces of various substrates and is not easy to fall off; through the efficient heat insulation performance, the energy consumption of building and industrial equipment is remarkably reduced, the energy cost is saved, the maintenance and recoating frequency is reduced due to the long service life and durability of the coating, and the long-term use cost is reduced; the heat-insulating and heat-preserving coating not only has a heat-insulating and heat-preserving function, but also has waterproof, moisture-proof and fireproof properties and the like, various application requirements are met, the attractiveness of the coating can be improved by using the reflective pigment, and the heat-insulating and heat-preserving coating is suitable for occasions with high appearance requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of paints, and in particular relates to a heat-insulating paint and a preparation method thereof. Background Art

[0002] In the context of global advocacy of energy conservation, emission reduction and sustainable development, the attention paid to energy-saving materials in the fields of construction and industry is increasing day by day. In the energy consumption of buildings, the heat lost through the walls, roofs and other enclosures accounts for a large proportion. During the operation of industrial equipment, the heat loss not only causes energy waste, but also may affect the operating efficiency and stability of the equipment. In this situation, high-efficiency thermal insulation materials have become the key to reducing energy consumption and improving energy utilization efficiency.

[0003] As a common surface coating material, paint is widely used in building interior and exterior wall decoration, industrial equipment protection and other scenarios. Traditional paints are mainly composed of base materials, solvents, pigments and additives. Their functions are mostly focused on decoration and beautification, such as giving objects rich colors, improving the appearance texture, and basic protection to prevent oxidation and corrosion of the surface of objects. However, with the continuous improvement of building energy-saving standards, such as the need for new buildings to meet higher external wall insulation indicators, and the deepening of industrial production's demand for energy-saving and consumption-reducing equipment, the shortcomings of traditional paints in thermal insulation performance have become increasingly obvious. Its thermal conductivity is relatively high, and it is difficult to effectively block heat transfer. In high temperature environments in summer, it is impossible to significantly reduce the indoor temperature of buildings or reduce the heat dissipation on the surface of industrial equipment, resulting in increased energy consumption of refrigeration equipment such as air conditioners; in low temperatures in winter, it is difficult to maintain heat indoors or inside equipment, resulting in energy waste.

[0004] Although there are some thermal insulation materials on the market, such as polystyrene boards and rock wool boards, most of these materials are in the form of plates, which have problems such as complex installation and poor adaptability to special-shaped structures in construction applications. Products that combine thermal insulation performance with the convenience and decorativeness of paint construction are extremely scarce. Therefore, the development of a new type of paint that has good thermal insulation performance and can be easily constructed like traditional paints and meet diverse decorative needs has become an urgent problem to be solved in the industry, and has important practical significance for promoting energy conservation in the fields of construction and industry. Summary of the invention

[0005] The purpose of the present invention is to provide a heat-insulating paint and a preparation method thereof, and by optimizing the formula and process, the efficient heat insulation, strong adhesion and long life of the coating are achieved; the present invention significantly reduces the thermal conductivity of the coating by adding efficient heat-insulating fillers and reflective pigments, and can effectively block the conduction and radiation of heat; at the same time, the coating has high adhesion, can firmly adhere to the surface of various substrates, and is not easy to fall off; the present invention significantly reduces the energy consumption of construction and industrial equipment and saves energy costs through efficient heat insulation performance, and the long life and durability of the coating reduce the maintenance and recoating frequency, and reduce the long-term use cost; it not only has heat insulation and heat preservation functions, but also has waterproof, moisture-proof, fire-proof and other properties, meeting various application requirements, and the use of reflective pigments can also improve the aesthetics of the coating, which is suitable for occasions with high requirements on appearance.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: a heat-insulating paint and a preparation method thereof, wherein the heat-insulating paint comprises the following components in parts by weight: 20-80 parts of base resin; 10-50 parts of heat-insulating filler; 5-30 parts of reflective pigment; 3-15 parts of additive; and 5-30 parts of solvent.

[0007] Preferably, the heat insulating paint comprises the following components in parts by weight: 30-70 parts of base resin; 20-40 parts of heat insulating filler; 10-20 parts of reflective pigment; 5-10 parts of additive; and 10-20 parts of solvent.

[0008] Preferably, the heat-insulating paint comprises the following components in parts by weight: 50-70 parts of base resin; 20-30 parts of heat-insulating filler; 10-18 parts of reflective pigment; 5-9 parts of additive; and 12-16 parts of solvent.

[0009] Preferably, the matrix resin is composed of one or more of acrylic resin, epoxy resin and silicone-acrylic resin.

[0010] Preferably, the thermal insulation filler is composed of one or more of hollow glass microspheres, ceramic microspheres and aerogel powder.

[0011] Preferably, the reflective pigment consists of one or more of titanium dioxide and zinc oxide.

[0012] Preferably, the auxiliary agent includes one or more of a dispersant, a defoamer and a thickener.

[0013] Preferably, the solvent consists of one or more of toluene, xylene, ethyl acetate and butyl acetate.

[0014] The present invention also provides a method for preparing heat-insulating paint, the method comprising the following steps:

[0015] (1) Add the base resin, solvent and additive into a stirring kettle and stir evenly at a low speed;

[0016] (2) Add thermal insulation fillers and reflective pigments and disperse at high speed to a fineness of ≤50 μm;

[0017] (3) Adjust the viscosity to 80-100 KU (Stormer viscometer), filter and package.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The present invention significantly reduces the thermal conductivity of the coating by adding high-efficiency thermal insulation fillers and reflective pigments, and can effectively block the conduction and radiation of heat; (2) The coating of the present invention has high adhesion, can firmly adhere to the surface of various substrates, and is not easy to fall off; (3) The present invention significantly reduces the energy consumption of buildings and industrial equipment and saves energy costs through its efficient thermal insulation performance. The long life and durability of the coating reduce the frequency of maintenance and recoating, and reduce the long-term use cost; (4) The present invention not only has thermal insulation functions, but also has waterproof, moisture-proof, fire-proof and other properties, which meet the needs of various applications. The use of reflective pigments can also improve the aesthetics of the coating, and is suitable for occasions with high requirements on appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Thermal conductivity of paint.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Unless otherwise defined, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described herein may be applied to the present invention. The preferred implementation methods and materials described herein are for demonstration purposes only and are not intended to limit the content of this application.

[0023] The experimental methods in the following examples are conventional methods unless otherwise specified; the experimental materials and test strains used in the following examples are purchased from commercial channels unless otherwise specified.

[0024] Example 1

[0025] Heat-insulating paint and preparation method thereof

[0026] The heat-insulating paint comprises the following components in parts by weight: 50 parts of base resin; 30 parts of heat-insulating filler; 10 parts of reflective pigment; 9 parts of auxiliary agent; and 12 parts of solvent.

[0027] Wherein, the matrix resin consists of acrylic resin and epoxy resin.

[0028] Wherein, the thermal insulation filler is composed of hollow glass microspheres.

[0029] Wherein, the reflective pigment is composed of titanium dioxide and zinc oxide.

[0030] Wherein, the auxiliary agent includes a dispersant, a defoamer and a thickener.

[0031] Wherein, the solvent consists of xylene.

[0032] The present invention also provides a method for preparing heat-insulating paint, the method comprising the following steps:

[0033] (1) Add the base resin, solvent and additive into a stirring kettle and stir evenly at a low speed;

[0034] (2) Add thermal insulation fillers and reflective pigments and disperse at high speed to a fineness of ≤50 μm;

[0035] (3) Adjust the viscosity to 80-100 KU (Stormer viscometer), filter and package.

[0036] Example 2

[0037] Heat-insulating paint and preparation method thereof

[0038] The heat-insulating paint comprises the following components in parts by weight: 70 parts of base resin; 20 parts of heat-insulating filler; 18 parts of reflective pigment; 5 parts of auxiliary agent; and 16 parts of solvent.

[0039] Wherein, the matrix resin consists of acrylic resin and epoxy resin.

[0040] Wherein, the thermal insulation filler is composed of hollow glass microspheres.

[0041] Wherein, the reflective pigment is composed of titanium dioxide and zinc oxide.

[0042] Wherein, the auxiliary agent includes a dispersant, a defoamer and a thickener.

[0043] Wherein, the solvent consists of xylene.

[0044] The present invention also provides a method for preparing heat-insulating paint, and the preparation method is implemented with reference to Example 1.

[0045] Example 3

[0046] Heat-insulating paint and preparation method thereof

[0047] The heat-insulating paint comprises the following components in parts by weight: 60 parts of base resin; 25 parts of heat-insulating filler; 14 parts of reflective pigment; 7 parts of auxiliary agent; and 14 parts of solvent.

[0048] Wherein, the matrix resin consists of acrylic resin and epoxy resin.

[0049] Wherein, the thermal insulation filler is composed of hollow glass microspheres.

[0050] Wherein, the reflective pigment is composed of titanium dioxide and zinc oxide.

[0051] Wherein, the auxiliary agent includes a dispersant, a defoamer and a thickener.

[0052] Wherein, the solvent consists of xylene.

[0053] The present invention also provides a method for preparing heat-insulating paint, and the preparation method is implemented with reference to Example 1.

[0054] Experimental Example 1

[0055] Performance test of a heat-insulating paint

[0056] The paints prepared in Example 1, Example 2 and Example 3 were used as experimental materials and recorded as Example 1 Group - Example 3 Group. The control group used common thermal insulation paints on the market. A thermal conductivity test device was built, consisting of a heating source, a thermal insulation test box, a temperature sensor and a data acquisition system. The thermal insulation paint of the present invention was coated on one side of the test box, and the other side was a blank control for comparing temperature changes. The temperature of the heating source was set to 60°C to simulate a high temperature environment. After turning on the heating source, the temperature changes of the inner and outer surfaces of the test box and the painted and unpainted sides were monitored in real time by the temperature sensor, and the temperature data at different time nodes were recorded by the data acquisition system. The test lasted for 12 hours. According to Fourier's law of heat conduction and the experimentally measured temperature data, test sample size and other parameters, the thermal conductivity of the thermal insulation paint of the present invention was calculated using relevant formulas.

[0057] Result analysis: Figure 1 As shown, the thermal conductivity of Example 1-3 groups is significantly lower than that of the control group, among which the thermal conductivity of Example 3 group is the lowest.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0059] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A heat-insulating paint, characterized in that: The heat-insulating paint comprises the following components in parts by weight: 20-80 parts of base resin; 10-50 parts of heat-insulating filler; 5-30 parts of reflective pigment; 3-15 parts of auxiliary agent; and 5-30 parts of solvent.

2. A heat-insulating paint according to claim 1, characterized in that: The heat-insulating paint comprises the following components in parts by weight: 30-70 parts of base resin; 20-40 parts of heat-insulating filler; 10-20 parts of reflective pigment; 5-10 parts of auxiliary agent; and 10-20 parts of solvent.

3. A heat-insulating paint according to claim 2, characterized in that: The heat-insulating paint comprises the following components in parts by weight: 50-70 parts of base resin; 20-30 parts of heat-insulating filler; 10-18 parts of reflective pigment; 5-9 parts of auxiliary agent; and 12-16 parts of solvent.

4. A heat-insulating paint according to claim 3, characterized in that: The matrix resin is composed of one or more of acrylic resin, epoxy resin and silicone-acrylic resin.

5. The heat-insulating paint according to claim 4, characterized in that: The heat-insulating filler is composed of one or more of hollow glass microspheres, ceramic microspheres and aerogel powder.

6. The heat-insulating paint according to claim 5, characterized in that: The reflective pigment is composed of one or more of titanium dioxide and zinc oxide.

7. The heat-insulating paint according to claim 6, characterized in that: The auxiliary agent includes one or more of a dispersant, a defoamer and a thickener.

8. The heat-insulating paint according to claim 7, characterized in that: The solvent is composed of one or more of toluene, xylene, ethyl acetate and butyl acetate.

9. A method for preparing the heat-insulating paint according to claim 8, characterized in that: The preparation method comprises the following steps: (1) Add the base resin, solvent and additive into a stirring kettle and stir evenly at a low speed; (2) Add thermal insulation fillers and reflective pigments and disperse at high speed to a fineness of ≤50 μm; (3) Adjust the viscosity to 80-100 KU (Stormer viscometer), filter and package.

Images