Method for preparing mortar sealing bonding material

A technology of sealing bonding and mortar, which is applied in the field of building materials, can solve the problems of low bonding strength, affecting bonding strength, and inability to withstand heat for a long time, so as to improve the toughening effect, increase compatibility, and reduce production costs Effect

Active Publication Date: 2018-09-18
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is sealant. The problem of sealant is that it cannot withstand heat for a long time, especially in high temperature and humid environment, it is easy to produce bubbles and cracks, which will affect the bonding strength.
The other is cement mortar. The problem of this kind of sealing material is that the bonding strength is low and leakage is easy to occur.
The sealing material has good construction performance, high early strength, and continuous strengthening in the later stage, but the bonding strength is not high

Method used

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  • Method for preparing mortar sealing bonding material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Step 1: Take 1 weight part of carbon nanotubes and add 20 weight parts of acidic solution (a mixture of concentrated sulfuric acid and concentrated nitric acid, the mixing mass ratio of the two is 3:1), and then add 0.2 weight part of dispersant (polyethylene Diol, molecular weight is 190) ultrasonic dispersion (ultrasonic power is 150KW, and ultrasonic temperature is stabilized at 25 ℃) obtains the acidified chopped carbon nanotube S-CNT-COOH that length is 30nm, then adds 1 weight part of molecular weight and is 80000 Methoxy-PEG-amino, reacted for 30min, and then centrifuged, washed and vacuum freeze-dried to prepare methoxy-PEG-amino modified chopped carbon nanotubes (S-CNT-COOH@MPEG-NH 2 );

[0031] Step 2: Take 50 parts by weight of steel slag, 40 parts by weight of granulated slag, 45 parts by weight of water, 0.01 part by weight of water reducing agent, and 0.6 part by weight of retarder, and mix and wet grind until the median particle size is ≤ 6um , to prepar...

Embodiment 2

[0035]Step 1: Take 3 parts by weight of carbon nanotubes and add 20 parts by weight of an acidic solution (a mixture of concentrated sulfuric acid and concentrated nitric acid, the mixing mass ratio of which is 3:1), and then add 1 part by weight of a dispersant (polyethylene Glycol, molecular weight is 420) ultrasonic dispersion (ultrasonic power is 150KW, and ultrasonic temperature is stable at 25 ℃) obtains the acidified short-cut carbon nanotube S-CNT-COOH that length is 50nm, adds the molecular weight of 0.5 weight part again and is 10000 Methoxy-PEG-amino, reacted for 60min, and then centrifuged, washed and vacuum freeze-dried to prepare methoxy-PEG-amino modified chopped carbon nanotubes (S-CNT-COOH@MPEG-NH 2 );

[0036] Step 2: Take 50 parts by weight of steel slag, 50 parts by weight of granulated slag, 50 parts by weight of water, 0.6 part by weight of water reducing agent, and 0.01 part by weight of retarder, mix and wet grind until the median particle size is ≤ 6um...

Embodiment 3

[0040] Step 1: Take 2 parts by weight of carbon nanotubes and add 20 parts by weight of an acid solution (a mixture of concentrated sulfuric acid and concentrated nitric acid, the mixing mass ratio of which is 3:1), and then add 1 part by weight of a dispersant (polyethylene Glycol, molecular weight is 420) ultrasonic dispersion (ultrasonic power is 150KW, and ultrasonic temperature is stable at 25 ℃) obtains the acidified chopped carbon nanotube S-CNT-COOH that length is 40nm, then adds 2 parts by weight of molecular weight of 10000 Methoxy-PEG-amino, reacted for 60min, and then centrifuged, washed and vacuum freeze-dried to prepare methoxy-PEG-amino modified chopped carbon nanotubes (S-CNT-COOH@MPEG-NH 2 );

[0041] Step 2: Take 60 parts by weight of steel slag, 40 parts by weight of granulated slag, 50 parts by weight of water, 0.6 part by weight of water reducing agent, and 0.01 part by weight of retarder, and mix and wet grind until the median particle size is ≤ 6um , to...

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Abstract

The invention discloses a method for preparing a mortar sealing bonding material, which solves the problem that the existing mortar sealing bonding material has high production cost and various performances need to be improved. The method comprises the following steps: firstly modifying carbon nanotubes to obtain methoxy-PEG-amino-modified chopped carbon nanotubes, and then taking steel slag, granulated slag, water, a water reducing agent and a retarder to be mixed for wet grinding until the median diameter is less than or equal to 6mu m to obtain slurry A; then adding quartz sand, fluorogypsum, ordinary Portland cement, water, an early strength agent and a thixotropic lubricant to the slurry A, and uniformly mixing to obtain slurry B; and finally, adding the chopped carbon nanotubes to the slurry B, and then adding a styrene-butadiene emulsion, an antifoaming agent and a coupling agent, mixing and stirring to obtain a modified mortar sealing bonding material. The method disclosed by the invention has a simple process and low production cost, and the prepared mortar sealing bonding material has high bonding strength, and has good bonding strength, anti-impact toughness, and good waterproof and anti-seepage performance and anti-cracking performance especially in a high temperature environment.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a preparation method of a mortar sealing adhesive material. Background technique [0002] The prefabricated concrete structure is a concrete structure formed by prefabricated concrete components as the main component, which is assembled, connected and combined with parts cast in place. In today's international construction field, prefabricated concrete structures are different in various countries and regions, and mainland China is still in the development and research stage. In recent years, the modernization of the domestic housing industry has achieved certain results, but there is still a long way to go in the application of housing systems and other fields. [0003] With the rise of the prefabricated construction industry, a series of problems have emerged that restrict the rapid development of the prefabricated construction industry. The exterior wall components of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2201/52C04B14/026C04B18/142C04B18/141C04B18/0445C04B2103/302C04B2103/22C04B2103/10C04B2103/50C04B24/26
Inventor 苏英徐焰贺行洋陈顺杨进王迎斌曾三海陈威秦景燕储劲松马梦阳黄健翔
Owner HUBEI UNIV OF TECH
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