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Anti-seepage leak-stopping epoxy adhesive and preparation method thereof

A leaky epoxy adhesive and coupling agent technology, applied in the direction of adhesives, epoxy resin adhesives, adhesive types, etc., can solve the problems of high brittleness of the adhesive layer, low bonding strength, poor fatigue resistance, etc. Improved toughness, low cost, good durability

Inactive Publication Date: 2011-08-17
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these adhesives or mortars are difficult to cure in water or have low bonding strength after curing, and the ratio of adhesives on the market is strict, or the construction is prone to sudden aggregation. After curing, the adhesive layer is brittle, low in impact strength, and poor in fatigue resistance. agent

Method used

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  • Anti-seepage leak-stopping epoxy adhesive and preparation method thereof
  • Anti-seepage leak-stopping epoxy adhesive and preparation method thereof
  • Anti-seepage leak-stopping epoxy adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Component A: Take 120 parts of cement dried at 50°C for 5 hours and 10 parts of auxiliary filler calcium oxide, add 5 parts of KH560, stir for 5 minutes, mix evenly, and set aside. B component: Take 100 parts of epoxy resin E-44, add 10 parts of diluent, 2.8 parts of accelerator diethylene triamine, stir for 5 minutes, and mix well. Add component A to component B, stir for 5 minutes, mix well, then add 30 parts of self-toughening phenalkamine modified curing agent T31, stir well, and measure its performance. The metal-to-metal shear strength was tested using the national standard, and it was cured at room temperature for 24 hours, and its shear strength reached about 21.91MPa.

Embodiment 2

[0030] Component A: Take 100 parts of cement dried at 50°C for 5 hours and 10 parts of calcium oxide as an auxiliary filler, add 5 parts of Nanda One, stir for 5 minutes, mix well, and set aside. Part B: Take 100 parts of epoxy resin E-44, add 10 parts of diluent, 2.8 parts of accelerator triethylenetetramine, stir for 5 minutes, and mix well. Add component A to component B, stir for 5 minutes, mix well, then add 40 parts of self-toughening phenalkamine modified curing agent T31, stir well, and measure its performance. The national standard is used to test the shear strength of its metal to metal, and it is cured at room temperature for 24 hours, and its shear strength reaches about 15.22MPa.

Embodiment 3

[0032] Component A: Take 120 parts of cement dried at 50°C for 5 hours and 10 parts of calcium oxide as auxiliary filler, add 4 parts of KH560, 5 parts of petroleum sulfonic acid, stir for 5 minutes, mix well, and set aside. B component: Take 100 parts of epoxy resin E-44, add 10 parts of diluent, 2.8 parts of accelerator tetraethylenepentamine, stir for 5 minutes, and mix well. Add component A to component B, stir for 5 minutes, mix well, then add 40 parts of self-toughening phenalkamine modified curing agent T31, stir well, and measure its performance. The national standard is used to test the metal-to-metal shear strength. After the dry glue is cured at room temperature for 24 hours, the shear strength reaches about 17.00MPa, and the adhesive strength when the dry glue is cured in water is 19.3MPa; when the wet glue is cured in water, The bonding strength is 6.8MPa.

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Abstract

The invention provides a moisture / water-curable anti-seepage leak-stopping epoxy adhesive which is prepared by complexing epoxy resin, self-toughening phenolic aldehyde amine modified curing agent T31, diluter, mahogany acid, coupling agent, promoter diethylenetriamine, filler cement and auxiliary filler calcium oxide according to a certain mass ratio. After being applied, the anti-seepage leak-stopping epoxy adhesive can be directly cured in water; the bonding strength is improved after curing, and the durability is high; and the adhesive layer ductility is improved without adding other toughener, and better impact ductility is achieved. The steel-steel dry-state adhesive application test on a universal electronic testing machine shows that the shear strength can be up to about 15.0-22.0MPa, the bonding strength is 18.0-21.0MPa after dry-state adhesive application and in-water curing, and the bonding strength is 4.0-7.0MPa after wet-state adhesive application and in-water curing.

Description

Technical field [0001] The invention belongs to the technical field of adhesives and their bonding, and relates to a construction type wet / water curing anti-seepage and leak-stopping epoxy adhesive and a preparation method thereof. Background technique [0002] With the development of economy and society, underwater construction projects are increasing, and the demand for underwater curing adhesives is increasing. At present, the underwater curing adhesives mainly include epoxy resin and polyurethane. For underwater epoxy adhesives, there are mainly underwater epoxy adhesives prepared with 810, 1085, MA, and ketimine curing agents or called underwater epoxy mortar. Most of these adhesives or mortars are difficult to cure in water or the bonding strength after curing is low, and the adhesive ratio on the market is strict, or construction is easy to burst. After curing, the adhesive layer is brittle, low impact strength, poor fatigue resistance, and needs to be toughened. Agent. ...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/06C09J11/08C09J11/04
Inventor 谢建军黄凯冉德龙李娜
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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