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Nano-modified anti-leakage non-fire repair elastic material

A technology for nano-modification and repairing materials, which is applied in the direction of epoxy resin glue, adhesive type, polyurea/polyurethane adhesive, etc., and can solve the problem of data and related research without performance, lack of repairing material formula, etc. Problems, to achieve the effects of good aging resistance and medium corrosion resistance, strong adhesion, and good construction

Pending Publication Date: 2022-04-19
湛江港石化码头有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the article "Repairing the Bottom of Oil Tanks with Epoxy Resin", Wang Feng disclosed a repair material using 634 type epoxy resin as a binder, phenoxypropylene oxide as a plasticizer, and polyethylene polyamine as a curing agent. , used to repair the bottom of the oil tank, but the article did not give the performance data and related research of the material after repair
[0003] At present, there are relatively few reports on non-fire repair materials for oil tank bottoms and oil pipelines, and there are almost no relevant mature repair material formulas. Therefore, it is necessary to develop a chemical material suitable for oil tank bottoms and oil pipeline repairs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] Preparation of modified nano silica: add 1g of coupling agent KH550 to 200ml ethanol, weigh 200g of nano SiO 2 , after cleaning with ethanol, add it to the ethanol solution of the coupling agent, heat up to 60°C for 30 minutes after ultrasonic treatment for 30 minutes, cool and filter, wash the filter cake with an appropriate amount of ethanol and dry it for use.

[0032] Preparation of modified nano-alumina: add 1g of coupling agent KH570 to 200ml acetone, weigh 200g of nano-Al 2 o 3 , after washing with acetone, add it to the acetone solution of the coupling agent, heat up to 60°C for 30 minutes after ultrasonic treatment for 30 minutes, cool and filter, wash the filter cake with an appropriate amount of ethanol and dry it for use.

[0033] Preparation of nano-silica modified epoxy resin: heat bisphenol A epoxy resin E-51 to 80 degrees, add 5% bisphenol A epoxy resin E-51 quality modified nano-SiO 2 , stirred for 30 minutes, ultrasonically dispersed by an ultrasonic...

Embodiment 1

[0047] Component A contains by mass fraction: 15% nano-silica modified epoxy resin, 15% nano-alumina modified epoxy resin, 20% polyurethane modified epoxy resin (SL3422), 10% polyester Etherimide CRS5001, 22.6% 800 mesh barium sulfate powder, 15% ethylene glycol bisglycidyl ether, 2% triethanolamine, 0.2% MT-900 polyamide wax, 0.2% MT-201 silicone defoamer;

[0048] Component B contains by mass fraction: 10% diaminodiphenylmethane (DDM), 10% diethyltoluenediamine (DETDA), 20% methylcyclohexanediamine (HTDA), 10% bis -N,N'-(methyl-butylmethylene)-diethylenetriamine (ketimine reacted with methyl isobutyl ketone and diethylenetriamine), 38.9% 800 mesh sulfuric acid Barium powder, 8% ethylene glycol bisglycidyl ether, 3% 3-mercaptopropyltriethoxysilane, 0.1% MT-201 silicone defoamer;

[0049] A component and B component are mixed according to the mass ratio of 1:1.

[0050] The repair material provided in this example cured at room temperature for 7 days has a tensile elastic m...

Embodiment 2

[0052] Component A contains by mass fraction: 10% nano-silica modified epoxy resin, 30% nano-alumina modified epoxy resin, 20% polyurethane modified epoxy resin (Dow DER852), 5% Polyetherimide CRS5001, 12.5% ​​800 mesh barium sulfate powder, 20% triglycidyl isocyanate, 2% triethanolamine, 0.3% MT-900 polyamide wax, 0.2% MT-201 Silicone defoamer; B component contains by mass fraction: 15% of 4,4'-methylenebis (2,6-diethylaniline), 10% of diethyltoluenediamine (DETDA), 20% of 4,4'-diaminodicyclohexylmethane, 10% of bis-N,N'-(methyl-butylmethylene)-diethylenetriamine (methyl isobutyl ketone, Diethylenetriamine reaction ketimine), 33.9% of 800-mesh barium sulfate powder, 8% of triglycidyl isocyanate, 3% of 3-mercaptopropyltriethoxysilane, 0.1% of MT-201 silicone defoamer;

[0053] A component and B component are mixed according to the mass ratio of 1:1.

[0054] The repair material provided in this example has a tensile elastic modulus of 6.0Gpa, a flexural strength of 60MPa, a...

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Abstract

The invention discloses a nano-modified anti-leakage non-fire repair elastic material, and belongs to the technical field of engineering materials. The elastic material is cross-linked and cured under the action of a plurality of amine curing agents with different structures through mutual matching of the nano-modified epoxy resin, the polyurethane-modified epoxy resin and the toughening resin, so that a high-elasticity nano-modified IPN composite high polymer material is formed, and the material is good in constructability and easy to coat and scrape; the initial adhesion is high, and flowing is avoided; the body strength and the bonding strength with a steel plate and concrete are high; the aging resistance and the medium corrosion resistance are good; normal-temperature curing is achieved, and the curing speed is high; the coating does not contain volatile solvents and is basically not shrunk during hardening; the adhesive can be bonded on a wet base plane, but the adhesive force in a dry environment is stronger; the use is convenient, safe and non-toxic. The material can be used for repairing the bottom of the oil tank or a pipeline without fire, so that the safety of the oil tank area is ensured while the normal operation of the oil tank area is ensured.

Description

technical field [0001] The invention relates to the technical field of engineering materials, in particular to a nano-modified anti-leakage non-fire repair elastic material. Background technique [0002] Oil storage tanks and oil pipelines are important equipment in the process of oil storage and transportation. With the extension of use time, the tank bottom and pipelines will leak to varying degrees. The current method of repairing the oil tank bottom and oil pipelines The main method is welding, that is, welding the patch steel plate on the defect position. This method usually has strict requirements on the construction conditions and high requirements on the rust removal of the steel plate. At the same time, the welding process has the risk of fire and explosion in the oil depot. Therefore, the non-fire repair process for the bottom of the oil tank has received extensive attention. Chemical grouting materials are widely used in road repair because of their excellent pro...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J175/04C09J163/02C09J11/04C09J11/08C08G59/40C08G59/56
CPCC09J163/00C09J175/04C09J11/04C09J11/08C08G59/4042C08G59/56C08K2201/011C08K2003/2227C08L2205/04C08L75/04C08L79/08C08K9/06C08K3/36C08K3/22C08K3/041C08L81/06
Inventor 黄李培王伟张其荣金声庭巩永忠
Owner 湛江港石化码头有限责任公司
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