Preparation method and application of phase change energy storage redispersible latex powder

Abstract

The invention belongs to the fields of building powder coatings, dry powder putty, dry powder mortar, and building heat insulation and energy conservation, and concretely relates to a preparation method and an application of phase change energy storage redispersible latex powder. The phase change energy storage redispersible latex powder is microcapsule core-shell structure having a phase change soft core and a hard shell, wherein a phase change material accounts for 60-70% of the total mass of the latex powder, and the glass transition temperature is -5-0 DEG C. After the latex powder forms afilm, the phase change enthalpy reaches 100-120 KJ / Kg. A microcapsule composed of styrene-acrylic acid is wrapped with the phase change material without affecting the physicochemical properties of resin, so the latex powder has the advantages of simple structure, low cost, excellent thermal insulation performance, good crack resistance, no seepage and no "super cooling" phenomenon, can be appliedto the fields of building powder coatings, dry powder putty, dry powder mortar, and building thermal insulation and energy saving, and can meet decoration, thermal insulation, energy saving and otherrequirements.

Description

technical field [0001] The invention belongs to the fields of architectural powder coatings, dry powder putty, dry powder mortar, building heat preservation and energy saving, and in particular relates to a preparation method and application of phase change energy storage redispersible latex powder. Background technique [0002] Since the energy crisis in the 1970s, the application of thermal energy storage technology in the field of industrial energy conservation and new energy has been paid more and more attention. Among them, phase change energy storage technology is getting more and more attention in the field of building energy consumption, which accounts for 20-40% of primary energy consumption. much research and application. At present, there are mainly three methods for preparing phase change energy storage building materials: impregnation method, direct incorporation method and microcapsule method. Instability and other problems, using capsule technology to encapsu...

AI Technical Summary

Problems solved by technology

At present, there are mainly three methods for preparing phase change energy storage building materials: impregnation method, direct incorporation method and microcapsule method. Instability and other problems, using capsule technology to encapsulate phase change materials can greatly eliminate the "phase separation" phenomenon, improve the stability of phase change materials, and increase their service life, but phase change material microcapsules have low thermal conductivity , Poor compatibility with building materials and high process costs