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Waterproof adhesive for outer walls and preparing method thereof

A waterproof glue, exterior wall technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of high glass transition temperature of pure acrylic emulsion, affecting the appearance of buildings, and high viscosity of elastic emulsion , to achieve the effect of good UV resistance, good waterproof effect and high tensile strength

Inactive Publication Date: 2012-07-11
CHANGJIANG DAYU CONSTR WATERPROOF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, many buildings nowadays adopt frame structures, and the walls are made of porous bricks with poor water drainage effect. Once local cracks occur in the plaster layer or surface wall, the buildings are prone to water leakage and other phenomena.
Therefore, in rainy days and other conditions, water easily penetrates the wall through the cracks in the wall, causing the deterioration of the indoor wall surface, which seriously affects the overall image of the building
[0004] The method of exterior wall waterproofing has been widely reported, but the effect is mostly not obvious
For example, the traditional transparent waterproof adhesive is composed of a single elastic emulsion and various additives. However, the viscosity of the elastic emulsion is too high, so it is easy to get dusty after the film is formed, which affects the appearance of the building.
In addition, the prior art also reports a transparent waterproof adhesive obtained by compounding a single pure acrylic emulsion and various additives. However, the glass transition temperature of the pure acrylic emulsion is relatively high, so it is difficult to form a film in winter and is easy to crack.

Method used

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  • Waterproof adhesive for outer walls and preparing method thereof
  • Waterproof adhesive for outer walls and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] Correspondingly, the present invention also provides a preparation method of waterproof glue for exterior walls, comprising the following steps:

[0031] Mix 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, ethylene glycol, deionized water and an antifoaming agent to obtain a premix; Add bactericide, pure acrylic emulsion and acrylate copolymer water dispersion, stir to obtain the waterproof glue for exterior wall.

[0032] 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate, also known as alcohol ester-12 or dodecyl alcohol ester, can lower the minimum film-forming temperature of the emulsion. The use of pure acrylic emulsion with acrylate copolymer aqueous dispersion can improve the tensile strength, stain resistance and water resistance of the emulsion system. The present invention has no special requirements on the manufacturer and model of the pure acrylic emulsion, and a product of a type well known to those skilled in the art can be used, preferably pure acrylic emu...

Embodiment 1

[0038] 1. According to the ratio of raw materials shown in Table 1, first add deionized water into the mixing tank and stir, then mix alcohol ester-12 and ethylene glycol evenly and add them to the mixing tank, then add YS-202 defoamer to obtain the pre- Mixed liquid;

[0039] 2. Add JINDA302 bactericide to the premix and stir, then slowly add pure acrylic emulsion CB200B, continue stirring for 10 minutes, and finally add elastic emulsion TX2068 slowly and stir for 5 minutes to obtain waterproof glue for exterior walls.

[0040] The performance measurement of the waterproof glue for exterior wall prepared by the present embodiment:

[0041] Clean the base surface with brushes, rags and other cleaning tools. There should be no clear water on the base surface, and try not to damage the effect of the original base surface;

[0042] Stir the waterproof glue for the outer wall prepared in this example evenly, apply the rolling brush or spraying process on the base surface in layer...

Embodiment 2～3

[0047] According to the ratio of raw materials in Table 1, the waterproof glue for exterior walls was prepared by using the preparation method of Example 1.

[0048] The performances of the waterproof adhesives for exterior walls prepared in Examples 2 and 3 were respectively measured by the method of Example 1, and the results are shown in Table 1.

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Abstract

The invention discloses a waterproof adhesive for outer walls and a preparing method thereof. The waterproof adhesive contains deionized water, 2,2,4-trimethyl-1,3-pentanediol single isobutyric acid ester, antifoaming agents, ethylene glycol, acrylic latex, bacteriacides and acrylate copolymer water dispersoid in weight ratio of (13-18) : (1.5-2.5) : (0.1-0.3) : (1.2-2) : (36-44) : (0.1-0.3) : (36-44). The 2,2,4-trimethyl-1,3-pentanediol single isobutyric acid ester and the acrylic latex are compounded, and contents of all components are adjusted, so that the waterproof adhesive for outer walls does not stick to hands after film-forming drying, is not prone to be interfered by outer factors and does not affect appearance of buildings; is high in tensile strength and good in waterproof effect; and has good weather resistance and a function in ultraviolet resistance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a waterproof glue for exterior walls and a preparation method thereof. Background technique [0002] With the continuous development of society and the increasing number of buildings, the shrinkage and cracking of the brick-concrete joints of the outer walls of buildings is not uncommon, causing water leakage on the walls, which brings great troubles to people's home life. In view of this, waterproofing has become an indispensable link in human life, and waterproof materials have also continued to develop over time. At present, the water discharge measures for the ground, interior walls and pipelines are relatively complete. Rigid waterproof materials or flexible waterproof coatings are generally used. Among them, rigid waterproof materials include waterproof mortar and general-purpose waterproof coatings, and flexible waterproof coatings include polymer cement-based w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/14C09D7/12
Inventor 吴鹏曹迈宇
Owner CHANGJIANG DAYU CONSTR WATERPROOF ENG