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Epoxy polymer modified cement mortar and preparation method thereof

A technology of epoxy polymer and cement mortar, which is applied in the field of building materials, can solve the problems of less attention on impermeability and chloride ion penetration resistance, achieve improved adhesion and anti-seepage performance, improve anti-seepage performance, and use simple raw materials Effect

Active Publication Date: 2021-10-08
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After searching, it is found that the existing polymer modified cement pays more attention to its mechanical properties and bonding properties, but less attention is paid to the impermeability and chloride ion permeation resistance. Therefore, it is necessary to develop a cement with high adhesion, impermeability and Cement mortar with anti-chloride ion penetration performance

Method used

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  • Epoxy polymer modified cement mortar and preparation method thereof
  • Epoxy polymer modified cement mortar and preparation method thereof
  • Epoxy polymer modified cement mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0039] Embodiment 1-3 A kind of cement mortar modified by epoxy polymer

[0040]

[0041] Preparation method: comprising the following steps:

[0042] (1) After mixing the water-based epoxy resin and the curing agent of the formula consumption, stir for 30 minutes at a stirring speed of 200r / min to obtain an epoxy resin emulsion;

[0043] (2) After mixing cement, sand, wetting agent, defoamer and dispersant, add water and stir at a speed of 500r / min for 15 minutes to obtain a mixture; then add the epoxy resin emulsion obtained in step (1) to the mixture Stir at a speed of 50 r / min for 30 minutes to obtain the cement mortar.

Embodiment 4-6

[0044] Embodiment 4-6 A kind of cement mortar modified by epoxy polymer

[0045]

[0046]

[0047] Preparation method: comprising the following steps:

[0048] (1) After mixing the water-based epoxy resin and the curing agent of the formula consumption, stir for 25 minutes at a stirring speed of 280r / min to obtain an epoxy resin emulsion;

[0049] (2) After mixing cement, sand, wetting agent, defoamer and dispersant, add water and stir at a speed of 600r / min for 15 minutes to obtain a mixture; then add the epoxy resin emulsion obtained in step (1) to the mixture Stir at a speed of 80 r / min for 20 minutes to obtain the cement mortar.

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Abstract

The invention provides epoxy polymer modified cement mortar and a preparation method thereof, and belongs to the technical field of building materials. The cement mortar comprises the following components in parts by weight: 80-100 parts of water-borne epoxy resin; 30-50 parts of a curing agent; 20-50 parts of cement; 25-40 parts of sand; 0.5-1 part of a wetting agent; 0.5-1 part of a defoaming agent; and 0.5-1 part of a dispersant. The cement mortar provided by the invention is mainly used for the outer wall of a lining steel pipe, so that the cement mortar has strict requirements on the anti-seepage performance of the cement mortar, and the mechanical property, the adhesive force and the anti-seepage performance of the prepared cement mortar are obviously improved by selecting the specific components of the raw materials in the implementation process.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an epoxy polymer modified cement mortar and a preparation method thereof. Background technique [0002] Ordinary cement-based composite materials, such as ordinary concrete or cement mortar, are heterogeneous and multi-inorganic brittle materials, and this porous material will be accelerated under the erosion of external aggressive media such as carbon dioxide, water, chloride ions, sulfates, etc. damage, the service life is greatly shortened. After adding polymer materials, many properties of cement-based materials such as strength, deformation ability, bonding performance, waterproof performance, durability, etc. will be improved, and the degree of improvement is greatly related to the poly-ash ratio, the type and performance of the polymer, etc. relation. [0003] The first polymers used in concrete were natural polymers, such as asphalt in rocks, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2201/52C04B24/281C04B24/04C04B24/32C04B14/06C04B24/42C04B24/383
Inventor 谢祥明姚楚康赵雅玲李娜娜郑莉黄红梅钟哲
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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