Nanometer-reflection thermal insulation coating and preparation method thereof

Abstract

The invention relates to a nanometer-reflection thermal insulation coating and a preparation method thereof. The nanometer-reflection thermal insulation coating is formed by mixing the following materials in percentage by weight: 15-25% of Surfa Pore thermal insulation coating additive, 30-60% of pure acrylic emulsion, 5-15% of water, 3-8% of stuffing, 1.20% of thickener, 1.03% of wetting agent, 0.84% of defoaming agent, 0.65% of dispersing agent and 0.82% of coalescing agent. The nanometer-reflection thermal insulation coating has the advantages of admirable application property, excellent thermal radiation reflection property, relatively low coefficient of heat conductivity, super stain resistance, self-cleaning property and crack resistance, admirable weather resistance and color retention, excellent scrub resistance and the like.

Description

【Technical field】 [0001] The invention relates to a reflective heat-insulating coating, in particular to a nano-reflective heat-insulating coating and a preparation method thereof, belonging to the technical field of thermal insulation materials. 【Background technique】 [0002] Reflective heat insulation coatings first appeared in the United States in the 1940s. Air with low thermal conductivity was introduced between multi-layer aluminum films to make composite materials. new era. In the late 1970s, with the rapid development of science and technology, great progress has been made in radiation heat insulation and reflective heat insulation technology. Proceeding from the mechanism of heat transfer, a multi-way composite heat insulation scheme for the substrate is proposed, thus breaking the traditional heat insulation method of only using materials with low thermal conductivity for heat insulation. [0003] At the beginning, the research on reflective and heat-insulating ...

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Problems solved by technology

[0008] 3. The functional durability of the coating is poor

At present, most reflective heat insulation coatings have poor stain resistance. After a period of time, the surface loses its original white surface, and the functional reflective surface basically disappears. The reflective heat insulation effect of its products will be greatly reduced.

[0009] 4. The physical and mechanical properties of the coating film are relatively poor

Some water-based reflective heat insulation coatings often have fine cracks in the practical process, which cannot adapt to the stress change and deformation of the substrate

Once water enters through these cracks, the heat insulation effect of the system is greatly reduced.

[0010] 5. Poor decoration and high cost

At present, most reflective heat insulation coatings require a thicker coating film to achieve better reflective heat insulation effect. Due to the large filler particles, the surface of the paint film is relatively rough, which directly leads to an increase in the comprehensive use cost of the coating, which is not conducive to the product. to promote

[0011] 6. It is difficult to characterize the performance of reflective heat insulation, and the comprehensive evaluation is difficult

However, the inspection methods of these two items are relatively cumbersome, and the inspection instruments are relatively expensive and complicated, so it is very difficult to quickly evaluate the performance of reflective heat insulation coatings on site

GB / T25261-2010 "Reflective and heat-insulating coatings for buildings" defines the concept and calculation method of the equivalent coating thermal resistance of building reflective and heat-insulating coatings, but the calculation process requires a large amount of long-term basic test data as the basis, in terms of timeliness Cannot meet the requirements of field testing

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