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Abrasion-resistant epoxy mortar and preparation method thereof

An epoxy mortar and anti-abrasion technology, which is applied in the field of hydraulic construction materials, can solve the problems of low epoxy resin strength, high epoxy resin specific gravity, and poor workability, and achieve excellent anti-abrasion performance, The effect of simple preparation method, good toughness and bonding performance

Inactive Publication Date: 2013-10-23
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the epoxy resin and fillers of the epoxy resin mortar provided by this patent have a high proportion of epoxy resin and fillers, few diluents, high mortar viscosity, poor workability, and inconvenience in construction; meanwhile, the strength of the epoxy resin is not high ( Compressive strength 50MPa, bond strength 2.5MPa)

Method used

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  • Abrasion-resistant epoxy mortar and preparation method thereof
  • Abrasion-resistant epoxy mortar and preparation method thereof
  • Abrasion-resistant epoxy mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: the preparation of epoxy resin slurry

[0038] (1) Preparation of curing agent: Add 10 parts by weight of triethylenetetramine, 1 part by weight of γ-aminopropyltriethoxysilane and 1 part by weight of 2,4,6-tris(dimethylamino)phenol Into the reactor, slowly add 10 parts by weight of 1,4-butanediol diglycidyl ether into the reactor at 15°C, and react for 2 hours to obtain curing agent I.

[0039] (2) Preparation of activator (obtained by referring to Chinese invention patent 201110237100.2): Mix 25 parts by mass of diethylenetriamine, 20 parts by mass of p-methoxyphenol and 20 parts by mass of formaldehyde (37% by mass), and add 0.65 Parts by mass of NaOH, heated to 40° C. for 20 h under stirring, and then fully dehydrated by decompression to obtain a high-efficiency furfural-acetone activator for grouting materials.

[0040] (3) Preparation of epoxy resin slurry: 60 parts by weight of epoxy resin E-44, 10 parts by weight of the activator prepared in step ...

Embodiment 2

[0041] Embodiment 2: the preparation of epoxy resin slurry

[0042] (1) Add 15 parts by weight of polyethylene polyamine, 3 parts by weight of γ-aminopropyltrimethoxysilane and 2 parts by weight of 2,4,6-tris(dimethylamino)phenol into the reactor, Slowly add 5 parts by weight of 1,6-hexanediol diglycidyl ether into the reactor at 40°C and react for 4 hours to obtain curing agent II.

[0043] (2) The preparation of the activator is the same as in Example 1.

[0044] (3) 100 parts by weight of epoxy resin E-51, 20 parts by weight of the activator prepared in step (2), 50 parts by weight of acetone, 40 parts by weight of furfural, 30 parts by weight of benzaldehyde, 16 parts by weight of step (1) The prepared curing agent II, 2 parts by weight of fatty acid glyceride, 5 parts by weight of 2,4,6-tris(dimethylamino)phenol, and 5 parts by weight of triethanolamine were mixed to obtain epoxy resin slurry II.

Embodiment 3

[0045] Embodiment 3: the preparation of epoxy resin slurry

[0046] (1) 14 parts by weight of isophorone diamine, 2.5 parts by weight of N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane and 2 parts by weight of 2,4,6- Tris(dimethylamino)phenol was added into the reactor, and 8 parts by weight of ethylene glycol diglycidyl ether was slowly added into the reactor at 25° C., and reacted for 3 hours to obtain curing agent III.

[0047] (2) The preparation of the activator is the same as in Example 1.

[0048] (3) 80 parts by weight of epoxy resin E-44, 12 parts by weight of the activator prepared in step (2), 30 parts by weight of acetone, 50 parts by weight of furfural, 20 parts by weight of butanone, 25 parts by weight of step (1) The prepared curing agent III, 2 parts by weight of Tween, 6 parts by weight of 2,4,6-tris(dimethylamino)phenol, and 3 parts by weight of diphenylformylhydrazide were mixed to obtain epoxy resin slurry III.

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Abstract

The invention belongs to the technical field of hydraulic structure construction materials and discloses abrasion-resistant epoxy mortar and a preparation method thereof. The abrasion-resistant epoxy mortar consists of the following components in parts by weight: 80-100 parts of sand, 25-40 parts of powder and 18-26 parts of epoxy resin slurry, wherein the epoxy resin slurry consists of the following components in parts by weight: 60-100 parts of epoxy resin, 10-20 parts of activating agent, 60-120 parts of carbonyl compound, 0-2 parts of surfactant, 10-25 parts of curing agent and 2-10 parts of accelerant. The abrasion-resistant epoxy mortar has excellent abrasion resistance (over 200h / (kg / m<2>) and low wear rate (below 0.16 percent), the compressive strength is over 90MPa, the bonding strength is over 4.9MPa, and the abrasion-resistant epoxy mortar can serve as an abrasion-resistant material and is applied to the field of hydraulic structure buildings.

Description

technical field [0001] The invention belongs to the technical field of hydraulic construction materials, and in particular relates to an anti-scouring epoxy mortar and a preparation method thereof. Background technique [0002] The overflow surface, spillway, stilling basin, apron and other parts of the dam of the hydropower station are often washed by high-speed sandy water flow. The erosion and cavitation damage of the concrete on the overflow surface by high-speed sandy water flow is a common and important problem in the construction and operation of hydropower projects. Improving the anti-scouring and anti-cavitation capabilities of the concrete on the overflow surface is the solution to this problem. important way. [0003] Some large and medium-sized hydropower projects in Northwest China generally have high water head and high dam body, and the flow rate of water in the discharge channel is very high. The high-speed water flow entrains suspended and displaced matter,...

Claims

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Application Information

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IPC IPC(8): C04B26/10
Inventor 梁利岩胡德焯史珺
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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