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Epoxy resin adhesive used for repairing pipe

An epoxy resin, liquid epoxy resin technology, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problem of not suitable for long-term buried metal pipeline maintenance, repair material compressive capacity and bonding strength Low resistance to chemical media immersion, etc., to achieve the effects of excellent compressive capacity, easy quality control, and excellent construction performance

Active Publication Date: 2007-10-24
天津市巨星防腐检测工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing adhesives for pipeline repair are made of epoxy resin and curing agent, plus certain additives and fillers. The disadvantages are that the repairing materials have low compressive strength and bonding strength, and are resistant to immersion in chemical media. In order to ensure that the repaired pipeline has a long service life, higher requirements are put forward for the repairing material in terms of compressive strength, bonding strength and resistance to immersion in chemical media.
However, because these materials are extremely expensive, they are not conducive to large-scale promotion and application, and are not suitable for the maintenance of long-term buried metal pipelines.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preferred component of epoxy resin adhesive for pipeline repair, wherein, in parts by weight

[0019] Material A: liquid epoxy resin 1, propylene oxide butyl ether 0.1, isobutyl titanate 0.008, organic bentonite 0.08, iron powder 0.1, aluminum powder 0.3, titanium powder 0.05, aluminum oxide 0.06, silicon carbide 0.04;

[0020] Material B: amidoamine 1, ethyl acetate 0.04, dimethylaminomethylphenol 0.05; when used, the proportion is A material 1, B material 0.6.

Embodiment 2

[0022] Composed of material A and material B, wherein: material A: by weight, liquid epoxy resin 1, propylene oxide butyl ether 0.05, isobutyl titanate 0.001, organic bentonite 0.05, iron powder 0.02, aluminum powder 0.1 , titanium powder 0.01, aluminum oxide 0.02, silicon carbide 0.02;

[0023] Material B: in parts by weight, amidoamine 1, ethyl acetate 0.02, and dimethylaminomethylphenol 0.02; the proportion in use is: material A 1, material B 0.2.

Embodiment 3

[0025] It is composed of material A and material B, wherein: material A: in parts by weight, liquid epoxy resin 1, propylene oxide butyl ether 0.2, isobutyl titanate 0.02, organic bentonite 0.2, iron powder 0.2, aluminum powder 0.5 , titanium powder 0.1, aluminum oxide 0.1, silicon carbide 0.1;

[0026] Material B: in parts by weight, amidoamine 1, ethyl acetate 0.1, and dimethylaminomethylphenol 0.1; the proportion in use is: material A 1, material B 0.8.

[0027] The manufacture method of epoxy resin adhesive for above-mentioned pipeline repair,

[0028] (1) According to the formula ratio, add propylene oxide butyl ether into the liquid epoxy resin, heat to 75°C, keep warm for 0.5h, and wait until the epoxy resin is completely dissolved;

[0029] (2) Add isobutyl titanate, organic bentonite, iron powder, aluminum powder, titanium powder, aluminum oxide, and silicon carbide in sequence to the dissolved epoxy resin and stir to make A in the adhesive. material;

[0030] (3) ...

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PUM

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Abstract

The invention discloses an epoxy resin adhesive to repair pipe, which consist of material A and material B with weight rate at 0. 2-0. 8, wherein the material A is composed of 1wt% liquid epoxy resin, 0. 05-0. 2wt% epoxypropane butyl ether, 0. 001-0. 02wt% isobutyl titanic acid, 0. 05-0. 2wt% organic alta-mud, 0. 02-0. 2wt% ferric powder, 0. 1-0. 5wt% aluminium powder, 0. 01-0. 1wt% titanium powder, 0. 02-0. 1wt% alumina, 0. 02-0. 1wt% carborundum; the material B contains 1wt% carbamoyl-amine, 0. 02-0. 1wt% acetic ether and 0. 02-0. 1wt% dimethylamino cresol methyl. The invention can reduce the repairing cost greatly, which simplifies the manufacturing technique without special equipment.

Description

technical field [0001] The invention belongs to an adhesive for pipeline repair engineering, in particular to an epoxy resin adhesive for pipeline repair. Background technique [0002] The existing adhesives for pipeline repair are made of epoxy resin and curing agent, plus certain additives and fillers. The disadvantages are that the repairing materials have low compressive strength and bonding strength, and are resistant to immersion in chemical media. In order to ensure that the repaired pipeline has a long service life, higher requirements are put forward for the repairing material in terms of compressive strength, bonding strength and chemical medium immersion resistance. Many new adhesives have been introduced on the market, and they have been widely used in civil or industrial small-scale bonding. However, because these materials are extremely expensive, they are not conducive to large-scale popularization and application, and are not suitable for the maintenance and...

Claims

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Application Information

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IPC IPC(8): C09J163/00F16L55/16
Inventor 陈沿明王勇张儒杰孙学辉张军焦庆川
Owner 天津市巨星防腐检测工程有限公司
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