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Preparation method of porous coated resin foamed particles, and outer wall heat-reflection thermal-insulation paint and preparation method thereof

A technology of foamed particles and heat-insulating coatings, which is applied in the direction of reflection/signal coatings, coatings, sputtering coatings, etc., which can solve the problems of thermal insulation effect to be improved, high gloss, poor appearance, etc., and achieve excellent insulation Good heat effect, good heat reflection effect, good heat insulation effect

Active Publication Date: 2014-12-03
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 preparation method of porous coated resin foamed particles, which comprises the following step: sequentially carrying out expansion foaming and magnetron sputtering metal coating on thermoplastic resin particles to obtain the porous coated resin foamed particles. The invention also discloses an outer wall heat-reflection thermal-insulation paint and a preparation method thereof. The paint is prepared by using the porous coated resin foamed particles as a heat-reflection thermal-insulation filler, an organic silicon modified acrylic acid emulsion as a base material, and an inorganic flaky material and water as auxiliary materials. The inside of the porous coated resin foamed particles is a porous structure, the pore diameter is 0.5 mu m or so, and the porous coated resin foamed particles have the free path approximate to air at 40 DEG C, and have weak convection conductivity and favorable thermal-insulation effect. The particle surface is provided with the metal coating, and thus, has favorable heat-reflection effect. The sun reflectivity of the heat-reflection thermal-insulation paint is greater than or equal to 0.80, and the hemispherical emittance is greater than or equal to 0.78; and the heat-reflection thermal-insulation paint has the advantages of high reflectivity, low heat conductivity coefficient and excellent thermal-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 Applications(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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