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Preparation method of porous coated resin foamed particles, heat-reflecting and heat-insulating coating for exterior walls and preparation method thereof

A technology of foamed particles and heat-insulating paint, which is applied in reflection/signal paint, coating, sputtering coating, etc., can solve the problems of the need to improve the heat-insulation effect, the high gloss, and the uneven surface of the paint film, and achieve Excellent thermal insulation effect, good heat reflection effect, low thermal conductivity effect

Active Publication Date: 2016-06-29
广西防城港美好涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hollow glass microspheres are the main filler of heat-reflective and heat-insulating coatings. However, the preparation process of high-quality hollow glass microspheres is complicated and the price remains high; thus raising the price of heat-reflecting and heat-insulating coatings
[0004] 2. Poor appearance
The presence of a large number of hollow glass microspheres on the surface makes the surface of the paint film uneven, and it is impossible to obtain a film surface with a smooth surface and high gloss.
[0005] 3. The heat insulation effect needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of porous coated resin foam particles:

[0028] Through a twin-screw extrusion granulation device, polypropylene (PP) thermoplastic resin is made into thermoplastic resin particles with a diameter of 2 μm by melt extrusion; it is put into an autoclave, and high-pressure gas (CO 2 , N 2 ) and organic solvent (chloroform, ethanol) to form a high-pressure mixed fluid, the pressure of the high-pressure fluid is 2MPa, and the weight ratio of each component of the high-pressure mixed fluid is CO 2 :N 2 : chloroform: ethanol = 1:1:1:1; make the high-pressure mixed fluid reach saturation in the thermoplastic resin particles, and finally heat and foam the saturated thermoplastic resin particles in 150°C continuous hot air medium to obtain the degree of expansion High, foamed thermoplastic resin particles with a closed-cell structure and a particle size of 12 μm.

[0029] Aluminum is used as the coating material, and the surface of thermoplastic resin foamed partic...

Embodiment 2

[0031] Preparation of Porous Coated Resin Expanded Particles

[0032] Through the twin-screw extrusion granulation device, polystyrene (PS) thermoplastic resin is made into thermoplastic resin particles with a diameter of 2 μm by melt extrusion; it is put into an autoclave, and high-pressure gas (CO 2 , N 2 ) and organic solvent (chloroform, ethanol) to form a high-pressure mixed fluid, the pressure of the high-pressure fluid is 2MPa, and the weight ratio of each component of the high-pressure mixed fluid is CO 2 :N 2 : chloroform: ethanol = 1:1:1:1; make the high-pressure mixed fluid reach saturation in the thermoplastic resin particles, and finally heat and foam the saturated thermoplastic resin particles in 150°C continuous hot air medium to obtain the degree of expansion High, foamed thermoplastic resin particles with a closed-cell structure and a particle size of 20 μm.

[0033] Aluminum is used as the coating material, and the surface of thermoplastic resin foamed par...

Embodiment 3

[0035] Preparation of Porous Coated Resin Expanded Particles

[0036] Through the twin-screw extrusion granulation device, polymethyl methacrylate (PMMA) thermoplastic resin is made into thermoplastic resin particles with a diameter of 2 μm by melt extrusion; it is put into an autoclave, and high-pressure gas ( CO 2 , N 2 ) and organic solvent (chloroform, ethanol) to form a high-pressure mixed fluid, the pressure of the high-pressure fluid is 2MPa, and the weight ratio of each component of the high-pressure mixed fluid is CO 2 :N 2 : chloroform: ethanol = 1:1:1:1; make the high-pressure mixed fluid reach saturation in the thermoplastic resin particles, and finally heat and foam the saturated thermoplastic resin particles in 150°C continuous hot air medium to obtain the degree of expansion High, foamed thermoplastic resin particles with a closed-cell structure and a particle size of 10 μm.

[0037] Aluminum is used as the coating material, and the surface of thermoplastic ...

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Abstract

The invention discloses a method for preparing porous coated resin foamed particles. The porous coated resin foamed particles are prepared by sequentially expanding and foaming thermoplastic resin particles and magnetron sputtering metal coating. The invention also discloses a heat-reflecting and heat-insulating paint for exterior walls and a preparation method thereof. The paint uses porous coating resin foamed particles as heat-reflecting and heat-insulating fillers, uses silicone-modified acrylic emulsion as a base material, and is equipped with inorganic Made from flake material and water. The porous coating resin foam particles have a porous structure inside, with a pore diameter of about 0.5 μm, which is close to the free path of air at 40°C, relatively weak convection and conduction, and good heat insulation effect; and the metal coating on the surface of the particles has a good heat reflection effect. The solar reflectance of heat-reflective and heat-insulating coatings is ≥0.80, and the hemispherical emissivity is ≥0.78. It has high reflectivity, low thermal conductivity and excellent heat insulation effect.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a method for preparing porous coating resin foamed particles, a heat-reflecting and heat-insulating coating for exterior walls with the porous coating resin foaming particles as components, and the heat-reflecting and heat-insulating paint for exterior walls Coating preparation method. Background technique [0002] Building energy-saving coating is a kind of building material product that can play an important role in building energy-saving insulation and reducing building energy consumption. Heat-reflective heat-insulating coating is a kind of building energy-saving coating, which has high solar reflectance and high infrared reflectance, and has the function of blocking heat conduction and convection. Architectural reflective heat insulation coatings are suitable for roofs and exterior walls of houses / buildings, and can be sprayed, rolled, brushed, etc., suitable f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D5/33C09D7/12C08J9/00C23C14/35C23C14/20B22F1/02
Inventor 纪家江
Owner 广西防城港美好涂料有限公司
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