Waterborne thermal insulation nano-coating and preparation method thereof

Abstract

The invention discloses a waterborne thermal insulation nano-coating and a preparation method thereof, and belongs to the technical field of special coatings. The waterborne thermal insulation nano-coating is prepared from the following components by mass: 5-15 parts of water, 1-6 parts of additives, 20-45 parts of pigment and filler, 20-60 parts of a binder and 1-3 parts of a coupling agent, wherein the pigment and filler comprises functional filler including nanosilica aerogel, hollow glass microbeads, titanium dioxide and potassium hexatitanate whiskers as well as physical filler includingtalcum powder, light calcium carbonate and wollastonite. The binder comprises water-soluble silicone resin, waterborne acrylic emulsion and waterborne acrylic elastic emulsion. The coating has low thermal conductivity and excellent thermal insulation effect, can realize large-scale industrial production, can be applied to thermal insulation of high-temperature pipelines and equipment, and can alsobe well applied to thermal insulation of internal and external walls of buildings.

Description

technical field [0001] The invention belongs to the technical field of special coatings, and in particular relates to a preparation method of water-based nano thermal insulation coatings. technical background [0002] Unnecessary heat conduction leads to lower energy utilization efficiency in various environments and increases additional energy consumption. Early heat insulation materials were mostly perlite, fiber, etc. With the development of industry, the huge consumption of energy and the increasingly stringent requirements for environmental protection, more and more industries pay more attention to energy conservation and pursue product value maximization. [0003] A nanocomposite material refers to a composite material composed of two or more solid phases, at least in one dimension, in a nanoscale size (ie, 1-100 nm). Nanocomposites not only have the small size effect of nanoparticles, but also have special properties such as large specific surface area, high surface...

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Problems solved by technology

[0006] The present invention uses nano-silica airgel composite hollow glass microspheres as the main heat insulation material, and potassium hexatitanate whisker composite rutile titanium dioxide as an infrared sunscreen to make a nano-heat-insulation and heat-insulation coating. Some defects of existing thermal insulation coatings (mainly high thermal conductivity) and the high cost of preparing thermal insulation coatings by using nano-silica aerogel alone

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