Exterior wall putty

Abstract

The invention belongs to the field of construction materials and relates to exterior wall putty. The exterior wall putty comprises the following components by weight: 10-15 parts of polymer powder, 30-50 parts of light clay bricks, 10-15 parts of perlites, 6-9 parts of high-alumina cement, 12-18 parts o mullites, 10-15 parts of bentonite, 2-4 parts of szaibelyites, 1-3 parts of dextrin powder, 3-5 parts of methyl cellulose, 5-8 parts of silica powder, 5-10 parts of fibrilia or viscose, 8-18 parts of water glass, 4-6 parts of dispersable emulsion powder and 10-15 parts of aluminium oxide solutions and silicon dioxide sol composite suspension solutions combined at the mass ratio of 1:1; the polymer powder is a modified mixture of polyethylene and polypropylene; the specific modification comprises the following steps by weight: 4-9 parts of aluminium dihydrogen phosphate, 0.5-4 parts of C12H25SO3Na, 3-4 parts of EPDM, 6-8 parts of aluminium acid ester coupling agents and 2-3 parts of phosphate ester are added into a base material which consists of 30-60 parts of ultrahigh molecular weight polyethylene with the molecular weights of 4-7 million and 15-25 parts of high density polypropylene with the molecular weights of 1-1.4 million; the mixture is kneaded in an internal mixer for 40-50 min at the temperature of 110-120 DEG C. according to the invention, the exterior wall putty is excellent in adhesiveness and filling ability and can prevent walls from discoloring and falling off.

Description

technical field [0001] The invention belongs to the field of building materials and relates to an exterior wall putty. Background technique [0002] At present, there are many kinds of putty for exterior walls, which are mainly used for cement walls and concrete walls, with different strengths. When the exterior wall putty is used to renovate some ceramic tile walls and mosaic walls, the putty has defects such as weak adhesion and poor water resistance; at the same time, it also has low fire protection rating, great dependence on the exterior wall structure and limited aesthetics , while achieving fire protection, it is impossible to pay attention to other important indicators such as heat preservation, waterproof, strength, and moisture absorption rate, and it is impossible to take into account the problems of long service life, low resource consumption, light environmental pollution, and light weight. [0003] CN101544856B (2012-9-26) discloses an exterior wall putty, how...

AI Technical Summary

Problems solved by technology

When the exterior wall putty is used to renovate some ceramic tile walls and mosaic walls, the putty has defects such as weak adhesion and poor water resistance; at the same time, it also has low fire protection rating, great dependence on the exterior wall structure and limited aesthetics , while achieving fire protection, it is impossible to pay attention to other important indicators such as heat preservation, waterproof, strength, and moisture absorption rate, and it is impossible to take into account the problems of long service life, low resource consumption, light environmental pollution, and light weight.

[0003] CN101544856B (2012-9-26) discloses a kind of exterior wall putty, but its adhesion, filling, waterproof, strength, moisture absorption rate, preventing wall discoloration and peeling off and other performances still need to be improved

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