Water-based acrylic heat insulation coating and preparation method thereof

Abstract

The invention relates to a water-based acrylic heat insulation coating which comprises the following components in percentage by weight: 15-18% of water-based elastic acrylic emulsion, 3-5% of opacity polymer, 10-15% of thermoplastic expansion tiny balloons, 10-15% of thermal expansion microcapsule, 8-10% of attapulgite, 8-12% of heat insulation powder, 15-20% of rutile type titanium dioxide, 10-12% of mica powder with the grain size of 800-1000 meshes, 0.3-0.5% of sodium polycarboxylic acid dispersing agent, 0.1-0.2% of defoamer, 0.08-0.10% of bactericidal preservative, 0.02-0.05% of pH regulator and the balance of deionized water. On the premises of playing roles in water proofing, protection and decoration, the water-based acrylic heat insulation coating of the invention has the advantages of reduced density, lowered heat transfer coefficient of paintcoat and improved heat insulation effect.

Description

technical field [0001] The invention relates to a water-based acrylic thermal insulation coating and a preparation method thereof, belonging to the technical field of architectural coatings. Background technique [0002] Building thermal insulation is an important aspect of saving energy and improving the living and use functions of buildings. Building energy consumption generally accounts for 30-40% of the total energy consumption, and most of it is heating and cooling energy consumption. At present, the external wall thermal insulation technology is developing towards the direction of high efficiency, thin layer, heat insulation, waterproof, and external protection integration. As an important part of building energy conservation, thermal insulation coatings have become a hot topic in industry research and have attracted attention from all over the world. Currently disclosed Chinese patents such as CN101348639A, CN101691469A, CN101319121A and other relevant thermal insulat...

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Problems solved by technology

Currently disclosed Chinese patents such as CN101348639A, CN101691469A, CN101319121A and other relevant thermal insulation coatings mainly use acrylate emulsion, hollow glass microspheres, dispersants, defoamers, pigments, fillers, etc. to achieve thermal insulation, It has the effect of heat insulation and waterproof and antifouling, but the composition of this coating contains inorganic materials such as hollow glass microspheres, acicular cordierite powder, sepiolite, expanded vermiculite, etc. The thermal coefficient is relatively large, and the disadvantages of thick insulation coating

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