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A preparation method of high-performance crack-resistant adhesive mortar for prefabricated buildings

A bonding mortar and construction technology, which is applied in the field of building materials, can solve problems such as weak bonding and easy cracking, and achieve the effects of low cost, good adhesion, and excellent crack resistance

Active Publication Date: 2021-01-19
浙江省通用砂浆研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current bonding mortar is easy to crack when bonding the organic foam insulation board, and the bonding is not firm.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing high-performance crack-resistant adhesive mortar for prefabricated buildings, comprising the following steps:

[0029] (1) Mix titanium diboride, sodium edetate, and absolute ethanol, place them in a ball mill for ball milling, and dry to obtain pretreated titanium diboride; wherein, the titanium diboride, ethylene diamine The mass ratio of sodium amine tetraacetate is 3:0.1;

[0030] (2) Mix and stir pretreated titanium diboride and epoxy resin adhesive to obtain titanium diboride coated with epoxy resin adhesive on the surface; finally add nano-bentonite, stir and mix to obtain diboride Titanium / epoxy resin adhesive / nano-bentonite composite material; wherein, the mass ratio of the pretreated titanium diboride, epoxy resin adhesive, and nano-bentonite is 2:1:1.1;

[0031] (3) Chitosan was dissolved in 13% sodium hydroxide solution and stirred for 15 minutes, filtered, dried and placed in a 5% glutaraldehyde solution at 40-50° C. for 1 hour, and ...

Embodiment 2

[0036] A method for preparing high-performance crack-resistant adhesive mortar for prefabricated buildings, comprising the following steps:

[0037] (1) Mix titanium diboride, sodium edetate, and absolute ethanol, place them in a ball mill for ball milling, and dry to obtain pretreated titanium diboride; wherein, the titanium diboride, ethylene diamine The mass ratio of sodium amine tetraacetate is 5:0.1;

[0038] (2) Mix and stir pretreated titanium diboride and epoxy resin adhesive to obtain titanium diboride coated with epoxy resin adhesive on the surface; finally add nano-bentonite, stir and mix to obtain diboride Titanium / epoxy resin adhesive / nano-bentonite composite material; wherein, the mass ratio of the pretreated titanium diboride, epoxy resin adhesive, and nano-bentonite is 2:1:1.5;

[0039] (3) Chitosan was dissolved in 13% sodium hydroxide solution and stirred for 35 minutes, filtered, dried and placed in a 5% glutaraldehyde solution at 40-50°C for 2 hours, then ...

Embodiment 3

[0044] A method for preparing high-performance crack-resistant adhesive mortar for prefabricated buildings, comprising the following steps:

[0045] (1) Mix titanium diboride, sodium edetate, and absolute ethanol, place them in a ball mill for ball milling, and dry to obtain pretreated titanium diboride; wherein, the titanium diboride, ethylene diamine The mass ratio of sodium amine tetraacetate is 3.5:0.1;

[0046] (2) Mix and stir pretreated titanium diboride and epoxy resin adhesive to obtain titanium diboride coated with epoxy resin adhesive on the surface; finally add nano-bentonite, stir and mix to obtain diboride Titanium / epoxy resin adhesive / nano-bentonite composite material; wherein, the mass ratio of the pretreated titanium diboride, epoxy resin adhesive, and nano-bentonite is 2:1:1.2;

[0047] (3) Chitosan was dissolved in 13% sodium hydroxide solution and stirred for 20 minutes, filtered, dried and placed in a 5% glutaraldehyde solution at 40-50°C for 1.2 hours, ...

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PUM

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Abstract

The invention discloses a preparation method of high-performance anti-cracking bonding mortar for an assembled building. The method comprises the following steps of firstly using sodium ethylene diamine tetracetate as modifying agent to prepare pretreated titanium diboride; then, preparing a titanium diboride / epoxy resin bonding agent / nanometer bentonite composite material with a core-shell structure; preparing modified chitosan; preparing chitosan crosslinking modified polyacrylic ester; finally adding ordinary Portland cement, sand, steel slag micro powder and fly ash into a stirring machine to be stirred and mixed for 5min; then, adding hydroxypropyl methyl cellulose ether, chitosan crosslinking modified polyacrylate and wood fiber; continuously stirring and mixing to obtain mortar. The mortar prepared by the method has the advantages of high stability, high intensity, good bonding performance and excellent anti-cracking performance. In addition, the preparation is simple; the costis low.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to a preparation method of high-performance anti-crack adhesive mortar for prefabricated buildings. Background technique: [0002] With the development of my country's construction industry, traditional construction methods have exposed many shortcomings, such as long construction period, low labor production efficiency, ineffective quality control, large energy consumption, etc., which can no longer keep up with the development of modern urbanization. The pace does not conform to a series of principles and policies such as energy conservation, emission reduction, and pollution control. Prefabricated buildings have gradually become the development direction of the construction industry because of their obvious advantages such as ensuring project quality, reducing energy consumption, and shortening the construction period. [0003] The so-called prefabricated building is to split t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B24/26C04B20/12C04B14/32C04B111/20
CPCC04B20/12C04B24/2641C04B28/04C04B2111/2038C04B2201/50C04B14/06C04B18/142C04B18/08C04B24/383C04B18/26C04B14/321C04B20/1037C04B20/1074
Inventor 汤薇洪峰孙秋砚
Owner 浙江省通用砂浆研究院