Cross linker of insulating anti-crack mortar

Abstract

The invention relates to a cross linker of insulating anti-crack mortar, comprising the components with mass fraction as follows: 76-82% of acrylic emulsion, 0.4-0.7% of dispersant, 0.2-0.5% of wetting agent, 1.5-2.4% of thickener, 0.2-0.4% of fungicide and the balance of deionized water. The cross linker of the invention can improve the flexibility and waterproofness of the cement mortar, enhancethe alkaliproof breaking strength retention of fiberglass gridding cloth and prevent the cement mortar alkali from eroding the fiberglass gridding cloth by covering the fiberglass gridding cloth so as to improve the service life pf the gridding cloth and ensuring more compact connection between the gridding cloth and the anti-crack mortar; a flexible polymer film layer and a hardening cement bodyinterpenetrate each other and form a stable and flexible protective layer by firm bonding, thus solving the defect of overlarge elastic modulus and linear expansibility between an insulating layer and the protective layer and finish of the anti-crack mortar, achieving flexible release of stress and effectively reducing the linear shrinkage of the system.

Description

technical field [0001] The invention relates to a chemical raw material for construction, in particular to an anti-cracking mortar crosslinking agent used for soaking alkali-resistant glass fiber mesh cloth during construction of a building insulation layer. Background technique [0002] As global resources are facing more and more severe situations, how to reduce building energy consumption has become a subject that requires key research, and external wall insulation technology can make a huge contribution to building energy conservation. At present, my country's external wall insulation technology is still in its infancy and growth stage, and there are still many problems; mainly due to the poor matching between the system materials, the "flexible deformation of each structural layer is inconsistent, and the layer-by-layer stress release is not consistent. Balance", eventually leading to the widespread cracking of the thermal insulation system, which not only affects the ap...

AI Technical Summary

Problems solved by technology

At present, my country's external wall insulation technology is still in its infancy and growth stage, and there are still many problems; mainly due to the poor matching between the system materials, the "flexible deformation of each structural layer is inconsistent, and the layer-by-layer stress release is not consistent. Balance", eventually leading to the widespread cracking of the thermal insulation system, which not only affects the appearance of the building's exterior decoration, but also causes the following problems: (1) The normal deformation of the base layer causes cracks or hollowing in the system

(2) Cannot resist stress due to temperature and humidity changes

(3) Due to poor hydrophobicity, rainwater and ground surface water penetrate and penetrate the protective layer, thereby destroying the thermal insulation composite system

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