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Gluewater in use for construction

A construction and glue technology, applied in the field of construction adhesives, can solve the problems of human harm, toxicity, construction inconvenience, etc., and achieve the effect of strong impermeability and weathering resistance.

Inactive Publication Date: 2007-05-09
吕小伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the construction adhesives used in the market are in the form of powder, viscous paste and liquid, which are selected according to the environment of use, but their main components are: polyvinyl formal is mixed with cellulose, Such adhesives will release toxic formaldehyde gas during use, which is harmful to the human body.
The so-called aldehyde-free binders on the market are not aldehyde-free in the true sense. In fact, the fully alkalized polyvinyl formal in the prior art is changed into a partially alkalized polyvinyl formal, so that The release of formaldehyde gas is reduced, but not completely eradicated, and the existing adhesives are also poor in water resistance and crack resistance, which brings inconvenience to construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Use methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and other series, use one or several of them as raw materials, add water to compound first Stir and mix, and then add water glass to the aqueous solution after mixing and mix, the weight ratio is: cellulose: water glass: water = 1: 1: 10, to obtain liquid glue for construction.

Embodiment 2

[0012] Example 2: Use methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and other series, use one or several of them as raw materials, add water to compound first Stir and mix, and then add water glass to the aqueous solution after mixing and mix, the weight ratio is: cellulose: water glass: water = 2: 3: 20, to obtain liquid glue for construction.

Embodiment 3

[0013] Example 3: Using methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and other series, using one or several of them as raw materials, adding water to compound Stir and mix, and then add water glass to the aqueous solution after the above compound and stir to mix and mix, the weight ratio is: cellulose: water glass: water = 4: 12: 40, to obtain liquid glue for construction.

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PUM

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Abstract

This invention discloses a construction glue, which is composed of cellulose, water glass and water at a weight ratio of (1-4) :( 1-12) :( 10-40). The glue is prepared by mixing cellulose and water, adding water glass, and stirring. The cellulose is one or more of methylcellulose, ethylcellulose and carboxypropyl cellulose. The glue does not contain formaldehyde, thus is environmentally friendly. Since water glass is adopted for adhesion, the glue has good adhesiveness, good impermeability and good weathering resistance. The peel strength at 180 deg.C is greater than or equal to 20 N / 20 mm, 30% higher than the JC438-91 standards.

Description

technical field [0001] The invention relates to a construction adhesive, in particular to a construction glue. Background technique [0002] At present, the construction adhesives used in the market are in the form of powder, viscous paste and liquid, which are selected according to the environment of use, but their main components are: polyvinyl formal is mixed with cellulose, Such adhesives will release toxic formaldehyde gas during use, which is harmful to the human body. The so-called aldehyde-free binders on the market are not aldehyde-free in the true sense. In fact, the fully alkalized polyvinyl formal in the prior art is changed into a partially alkalized polyvinyl formal, so that The release of formaldehyde gas is reduced, but not completely eradicated, and the existing adhesive has poor water resistance and crack resistance, which brings inconvenience to construction. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the...

Claims

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Application Information

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IPC IPC(8): C09J101/08
Inventor 吕小伟
Owner 吕小伟