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3PE anticorrosive paint epoxy bottom layer for outer wall of deep sea oil and gas transmission steel pipe and preparation method of 3PE anticorrosive paint epoxy bottom layer

An anti-corrosion coating, oil and gas technology, applied in the direction of anti-corrosion coatings, coatings, epoxy resin coatings, etc., can solve the problems of poor toughness of epoxy resin, and achieve the effects of reducing pollution, good processability, and long service life

Inactive Publication Date: 2015-03-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a 3PE anti-corrosion coating epoxy bottom layer on the outer wall of deep-sea oil and gas transportation steel pipes, so as to improve the shortcomings of poor toughness of epoxy resin itself, and have good mechanical properties and production and processing properties

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  • 3PE anticorrosive paint epoxy bottom layer for outer wall of deep sea oil and gas transmission steel pipe and preparation method of 3PE anticorrosive paint epoxy bottom layer

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preparation example Construction

[0045] The preparation method of the 3PE anti-corrosion coating epoxy primer on the outer wall of the deep-sea oil and gas transmission steel pipe includes the following steps:

[0046] Step a. Mix epoxy resin, graphene oxide and coupling agent evenly, place them in an ultrasonic oscillator, and use 50Hz, 1000W ultrasonic treatment for 7 to 8 hours;

[0047] Step b. Mix the well-mixed raw materials in step a with gas-phase SiO 2 Mix and stir for 20 to 30 minutes, the speed of the mixer is 700 to 900 rpm, so that the gas phase SiO 2 Evenly dispersed;

[0048] Step c. The product in step b is mixed with a curing agent for the preparation of tensile shear samples and impact samples, and the samples are cured at 80° C. for 6 hours to obtain the epoxy bottom layer.

Embodiment 1

[0051] (1) Raw materials:

[0052] Epoxy resin: bisphenol F type epoxy resin

[0053] Silane coupling agent: KH-550

[0054] Graphene oxide

[0055] Vapor SiO 2

[0056] Curing agent: T-31 curing agent

[0057] According to the mass percentage, the ratio of the above raw materials is: epoxy resin 60%, silane coupling agent 5%, graphene oxide 1.5%, gas phase SiO 2 3.5%, curing agent 30%.

[0058] (2) Preparation method:

[0059] a. Mix epoxy resin, graphene oxide and coupling agent evenly, place in an ultrasonic oscillator, and use 50Hz, 1000W ultrasonic treatment for 7 hours;

[0060] b. Combine the well-mixed raw materials in step a with gas-phase SiO 2 Mix and stir for 30 minutes to make the gas phase SiO 2 Evenly disperse, the speed of the mixer is set to 800 rpm during the mixing process;

[0061] c. The product in step b is mixed with a curing agent for the preparation of tensile shear samples and impact samples, and the samples are cured at 80° C. for 6 hours to...

Embodiment 2

[0063] (1) Raw materials:

[0064] Epoxy resin: bisphenol F type epoxy resin

[0065] Silane coupling agent: KH-550

[0066] Graphene oxide

[0067] Vapor SiO 2

[0068] Curing agent: T-31 curing agent

[0069] According to the mass percentage, the ratio of the above raw materials is: epoxy resin 65%, silane coupling agent 10%, graphene oxide 0.5%, gas phase SiO 2 2%, curing agent 22.5%.

[0070] (2) Preparation method:

[0071] a. Mix epoxy resin, graphene oxide and coupling agent evenly, place in an ultrasonic oscillator, and use 50Hz, 1000W ultrasonic treatment for 8 hours;

[0072] b. Combine the well-mixed raw materials in step a with gas-phase SiO 2 Mix and stir for 20 minutes to make the gas phase SiO 2 Evenly disperse, the speed of the mixer is set to 700 rpm during the stirring process;

[0073] c. The product in step b is mixed with a curing agent for the preparation of tensile shear samples and impact samples, and the samples are cured at 80° C. for 6 hou...

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Abstract

The invention provides a 3PE anticorrosive paint epoxy bottom layer for an outer wall of a deep sea oil and gas transmission steel pipe and a preparation method of the epoxy bottom layer. The epoxy bottom layer comprises the following raw materials in percentage by mass: 60%-75% of epoxy resin, 5%-10% of a silane coupling agent, 0.5%-1.5% of graphene oxide, 2%-5% of gaseous phase SiO2 and 15%-30% of a curing agent. The preparation method comprises the following steps: mixing the raw materials evenly; carrying out ultrasonic treatment; putting into a stirrer and stirring evenly; and heating and solidifying, so as to obtain the epoxy bottom layer. The epoxy bottom layer has excellent mechanical property and wide application; and particularly, the anti-tensile shearing strength and the impact strength are improved.

Description

technical field [0001] The invention belongs to the technical field of steel pipeline anticorrosion, and in particular relates to a 3PE anticorrosion coating epoxy primer on the outer wall of a deep sea oil and gas transmission steel pipe and a preparation method thereof. Background technique [0002] As an important energy and strategic material of a country, oil and gas resources play a vital role in the fields of modern military, industry and human life. With the depletion of onshore oil and gas resources caused by over-exploitation, the competition, exploitation and utilization of offshore oil and gas have become the focus and focus of military, political, economic and diplomatic concerns of all countries in the world today. At present, the development of offshore oil and gas resources is usually transported by large ships and pipelines. Among them, submarine pipeline transportation has the outstanding advantages of high safety performance and low cost, and has been adop...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/12
CPCC09D163/00C08K3/04C08K3/36C08K9/06C08K2201/003C09D5/08C09D7/61C09D7/62
Inventor 姚正军徐丹周金堂李天明刘沛江
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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