Preparation method of special anticorrosion high-temperature-resistant epoxy resin for oil exploitation sucker rod

A technology of epoxy resin and oil exploitation, which is applied in the field of preparation of new epoxy resin, can solve the problems of high brittleness, low high temperature resistance, large curing shrinkage rate of vinyl ester resin, etc., and achieve high bending strength and improved bending strength Effect

Inactive Publication Date: 2020-04-24
达森(天津)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the large curing shrinkage rate of vinyl ester resin and its poor corrosion resistance, especially alkali resistance, the sucker rod formed by pultrusion of carbon fiber / vinyl ester resin has a long-term corrosion resistance in acid, alkali and salt. It is not necessarily the best choice for heavy oil wells; E51 epoxy resin and anhydride curing agent have relatively high brittleness, low toughness and low high temperature resistance after curing

Method used

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  • Preparation method of special anticorrosion high-temperature-resistant epoxy resin for oil exploitation sucker rod
  • Preparation method of special anticorrosion high-temperature-resistant epoxy resin for oil exploitation sucker rod

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for preparing a special anti-corrosion and high-temperature resistant epoxy resin for oil extraction sucker rods, comprising the following steps in sequence:

[0023] (1) 30 parts of 4,4' diaminodiphenylmethane tetraglycidylamine, 30 parts of aminophenol-based trifunctional epoxy resin, 30 parts of bisphenol A epoxy resin, 5 parts of trimethylolpropane Triglycidyl ether was added to the reaction kettle at a temperature of 30°C and stirred under vacuum for 60 minutes to obtain the epoxy resin main agent;

[0024] (2) Add 1 part of carbon nanotubes and 8 parts of coupling agent to 100 parts of deionized water, and fully stir at a temperature of 25°C to prepare a mixture, and pass the mixture through a disperser at 80°C to a high degree of dispersion , preparing a solution in which carbon nanotubes are dispersed, cleaning the dispersed carbon nanotubes with ethanol or acetone, and then drying the cleaned carbon nanotubes at 60° C. for 120 minutes to obtain functio...

Embodiment 2

[0029] A method for preparing a special anti-corrosion and high-temperature resistant epoxy resin for oil extraction sucker rods, comprising the following steps in sequence:

[0030] (1) 32 parts of 4,4' diaminodiphenylmethane tetraglycidylamine, 32 parts of aminophenol-based trifunctional epoxy resin, 32 parts of bisphenol A epoxy resin, 7 parts of trimethylolpropane Triglycidyl ether was added into the reactor at a temperature of 40° C. and stirred under vacuum for 60 minutes to obtain the epoxy resin main agent;

[0031] (2) Add 3 parts of carbon nanotubes and 9 parts of coupling agent to 100 parts of deionized water, and fully stir at a temperature of 30°C to prepare a mixture, and pass the mixture through a disperser at 80°C to a high degree of dispersion , preparing a solution in which carbon nanotubes are dispersed, cleaning the dispersed carbon nanotubes with ethanol or acetone, and then drying the cleaned carbon nanotubes at 80° C. for 130 minutes to obtain functional...

Embodiment 3

[0036] A method for preparing a special anti-corrosion and high-temperature resistant epoxy resin for oil extraction sucker rods, comprising the following steps in sequence:

[0037] (1) 33 parts of 4,4' diaminodiphenylmethane tetraglycidylamine, 33 parts of aminophenol-based trifunctional epoxy resin, 33 parts of bisphenol A epoxy resin, 8 parts of trimethylolpropane Triglycidyl ether was added into the reactor at a temperature of 45° C. and stirred under vacuum for 60 minutes to obtain the epoxy resin main agent;

[0038] (2) Add 4 parts of carbon nanotubes and 9 parts of coupling agent to 100 parts of deionized water, and fully stir at a temperature of 35°C to prepare a mixture, and pass the mixture through a disperser at 80°C to a high degree of dispersion , preparing a solution in which carbon nanotubes are dispersed, cleaning the dispersed carbon nanotubes with ethanol or acetone, and then drying the cleaned carbon nanotubes at 80° C. for 140 minutes to obtain functional...

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Abstract

The invention relates to a preparation method of a special anticorrosion high-temperature-resistant epoxy resin for an oil exploitation sucker rod. The preparation method comprises the following steps: preparation of an epoxy resin main agent, preparation of functionalized carbon nanotubes, preparation of a reinforcing and toughening liquid, preparation of a curing agent and preparation of epoxy resin. The special anticorrosion high-temperature-resistant epoxy resin for the oil exploitation sucker rod, prepared by the method, has the advantages of high temperature resistance, corrosion resistance and high bending strength; the Tg temperature reaches 180-200 DEG C, the Tg temperature is increased by 50% or above, the requirements for production and use of sucker rods of all oil fields including high-temperature oil wells and ultra-deep wells can be almost met, the average bending strength is equal to or larger than 150 MPa, and the bending strength is improved by 25%.

Description

technical field [0001] The invention belongs to the technical field of novel epoxy resin preparation, and in particular relates to a preparation method of a special anti-corrosion and high-temperature resistant epoxy resin for oil exploitation sucker rods. Background technique [0002] Rod pumping is the most widely used mechanical oil recovery technology in oil-producing countries in the world. At present, most of the sucker rods used are metal sucker rods, mainly steel sucker rods, etc. The disadvantages of steel sucker rods The main reasons for failure and failure are: 1. Heavy weight (the pumping unit has a large load and consumes a lot of power); 2. It is easy to corrode; 3. It is prone to fatigue fracture (poor fatigue resistance and short service life); 4. Frequent joints Fracture (maintenance takes a long time and reduces oil production); 5. Piston effect, etc. [0003] In order to solve the aforementioned problems of steel sucker rods, reduce energy consumption and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/42C08G59/68C08G59/38C08K3/04C08K9/04C08K9/06
CPCC08G59/4215C08G59/686C08G59/38C08K9/06C08K9/04C08K3/041C08K2201/011
Inventor 王章安
Owner 达森(天津)材料科技有限公司
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