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Nano ZnO/SiO2 sol modified self-cleaning silicone-acrylic exterior wall insulating mould coating

A silicone-acrylic exterior wall and thermal insulation coating technology, applied in the direction of reflection/signal coatings, coatings, etc., to achieve excellent adaptability, excellent thermal insulation effect, and the effect of reducing heat energy transmission

Active Publication Date: 2010-11-10
CHONGQING HANGLI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of coating has the advantages mentioned above, it still cannot achieve the anti-contamination properties for the two types of pollutants at the same time.

Method used

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  • Nano ZnO/SiO2 sol modified self-cleaning silicone-acrylic exterior wall insulating mould coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of nano ZnO / SiO2 sol-modified silicon acrylic exterior wall self-cleaning heat-insulating coating, comprising the following steps (wherein each percentage is a percentage by weight):

[0021] 1. Put 40% fluorine-modified silicon-acrylic emulsion into the material tank first, and dope 8% nano-Sb with SnO 2 , nano ZnO sol and nano SiO 2 4% of the sol and 2% of the silane-based molecular bridge were added sequentially and then dispersed at a speed of 1200 rpm, and ultrasonic waves were introduced to assisted dispersion for 40 minutes to generate a base material liquid.

[0022] 2. Add 12% hollow ceramic microspheres, 13% titanium dioxide, and 0.2% defoamer, 0.1% bactericide, 0.5% thickener, 0.45% film-forming aid, and 6% rheological agent to the base in sequence In the feed liquid, finally add deionized water and stir for 40 minutes at a speed of 1200 rpm to mix evenly, and adjust the viscosity to 80KU (both thickener and rheological agent can adjust ...

Embodiment 2～6

[0024] Using the raw materials in the following table and their weight ratio relationship and adjustment parameters, and using the same preparation method as in Example 1, the nano ZnO / SiO2 sol-modified silicon acrylic exterior wall self-cleaning heat-insulating coating of the present invention was prepared:

[0025]

[0026] The above-mentioned infrared reflective nanomaterial is nano-Sb, or nano-Sb doped SnO 2 , or prior art infrared reflective nanomaterials.

[0027] The above molecular bridge modification materials are silane molecular bridges, or other existing molecular bridge modification materials.

[0028] The above-mentioned conventional auxiliary materials such as defoamers, bactericides, thickeners, film-forming aids, and rheological agents are commonly used constituents in the field of coatings. As prior art, no further description will be made.

[0029] Using the present invention as an exterior wall coating, after testing, the prepared coating has a sunlight...

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Abstract

The invention discloses a nano ZnO / SiO2 sol modified self-cleaning silicone-acrylic exterior wall insulating mould coating, which is prepared by the following components by weight percent: 30-50% of fluorine modified silicone-acrylic emulsion, 6-10% of a infrared reflection nanomaterial, 3-5% of nano ZnO sol, 3-5% of nano SiO2 sol, 1-3% of a molecular bridge modifying material, 8-15% of hollow ceramic micro-spheres, 8-13% of titanium white, other conventional auxiliary materials with a conventional dosage and the balance of deionized water. The coating in the invention has room temperature infrared emission and sunshine heat reflection functions, can reflect at least 54% of full-spectrum energy in sunshine radiation, converts at least 58% of absorbed sunshine energy into infrared rays which are radiated into air by the mode of an atmospheric window waveband, and reduces indoor heat energy transmitted by the inner surface of a wall body. The coating of the invention also is an exterior wall coating with a lyophobic-oleophobic double lotus effect self-cleaning function, and has high weather ability.

Description

technical field [0001] The invention relates to an exterior wall heat-insulating paint with self-cleaning function and light-heat reflection function, in particular to nano ZnO / SiO2 sol modified silicon acrylic exterior wall self-cleaning heat-insulation paint. Background technique [0002] In my country's current energy-saving, thermal insulation technology system for exterior walls of buildings, it has become a consensus in the industry to use exterior wall insulation coatings with light and heat reflection functions to greatly reduce the absorption and accumulation of light and heat on the surface of the topcoat. The light and heat absorption and reflection properties of the topcoat are related to the success or failure of the heat insulation and energy saving system; the object of its action is sunlight to the outside, and the gradient material layer of the heat insulation system to the inside. Avoiding excessive absorption and accumulation of light and heat in the topco...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D7/12C09D5/33
Inventor 赵航李朝丽
Owner CHONGQING HANGLI IND
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