Polyurea-modified acrylic acid phase-change heat-insulating elastic putty and preparation method thereof

Abstract

The invention discloses polyurea-modified acrylic acid phase-change heat-insulating elastic putty and a preparation method thereof. The preparation method comprises the following steps: firstly usingHDPE as a support body, preparing an HDPE qualitative phase-change material; secondly, performing the washing and deoiling, surface roughening and coupling treatment to hollow glass beads so as to obtain the glass beads after the surface coupling treatment; enabling titanium dioxide and lanthanum oxide to be deposited on the surface of the hollow glass beads by using a hydrothermal method, to obtain the decorated hollow glass beads; and preparing polyurea-modified acrylic acid elastic emulsion; finally, using the polyurea-modified acrylic acid elastic emulsion as a film former, using the HDPEqualitative phase-change material, talcum powder and the decorated hollow glass beads as filler, and preparing the polyurea-modified acrylic acid phase-change heat-insulating elastic putty with the help of an assistant. The elastic putty has the characteristics of good bonding strength, elasticity, water resistance and permeability resistance, and has the functions of phase-change energy-storing and temperature-regulating, temperature control and heat insulation.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a polyurea-modified acrylic phase-change thermal insulation elastic putty and a preparation method thereof. Background technique [0002] At present, my country's building energy consumption accounts for about 35% of the total energy consumption of the society, and building energy conservation has been listed as one of the top ten energy-saving projects in the country. In order to achieve the goal of building energy saving of 50% and 65%, "external wall insulation engineering technology" is generally implemented for new buildings and existing buildings, with emphasis on the implementation of EPS (polystyrene foam board) / XPS (extruded polystyrene foam board) Thin plaster external wall insulation system and PS (polystyrene) particle slurry external wall external insulation system. Practice in the past few years has proved that the above-mentioned thermal insulation system h...

AI Technical Summary

Problems solved by technology

Practice in the past few years has proved that the above-mentioned thermal insulation system has defects such as many joints, large internal stress of the material, poor dimensional stability, and large deformation caused by thermal stress, which can easily cause cracks in the thermal insulation layer, and then cause cracks in the protective layer.