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Epoxy powder primer used for anticorrosion paint for outer walls of deep sea oil transportation steel pipes and preparing method thereof

An oil transmission steel pipe, anti-corrosion coating technology, applied in anti-corrosion coatings, powder coatings, epoxy resin coatings and other directions, can solve the problems affecting the service life and safety of the seabed, poor mechanical properties at low temperature, poor adhesion of steel pipes, etc. The effects of seawater corrosion resistance, long service life, excellent water resistance and adhesion

Active Publication Date: 2015-04-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the harsh environment of offshore oil and gas transportation, ordinary epoxy coating primers have poor low-temperature mechanical properties, are prone to scratches and abrasions under external forces, and have poor adhesion to steel pipes, prone to cracks, The peeling phenomenon seriously affects its service life and safety on the seabed

Method used

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  • Epoxy powder primer used for anticorrosion paint for outer walls of deep sea oil transportation steel pipes and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An epoxy powder primer used for the anticorrosion coating on the outer wall of deep-sea oil pipeline steel pipes consists of the following raw materials in parts by mass:

[0030] 40 parts of E-12 epoxy resin, 10 parts of novolak epoxy resin, 25 parts of filler, 9 parts of curing agent, 0.1 part of antioxidant, 0.2 part of coupling agent, 0.9 part of benzoate, 0.3 part of leveling agent 1 part, 1 part of graphene, 1 part of polyvinyl butyral, 3 parts of modified polytetrafluoroethylene wax micropowder, 0.2 part of rare earth chloride, and 1 part of pigment.

[0031] Described filler is made up of the raw material of following weight part:

[0032] 25 parts of precipitated barium sulfate, 6 parts of rutile titanium dioxide, 5 parts of active silica powder, 3 parts of mica powder, 1.5 parts of aluminum tripolyphosphate, and 0.2 parts of fumed silica.

[0033] The fineness of the precipitated barium sulfate, rutile titanium dioxide, active silicon micropowder and mica pow...

Embodiment 2

[0043] An epoxy powder primer used for the anticorrosion coating on the outer wall of deep-sea oil pipeline steel pipes consists of the following raw materials in parts by mass:

[0044] 45 parts of E-12 epoxy resin, 15 parts of novolak epoxy resin, 35 parts of filler, 10 parts of curing agent, 1 part of antioxidant, 0.5 part of coupling agent, 0.9 part of benzoate, 0.5 part of leveling agent 1 part, 2 parts of graphene, 1 part of polyvinyl butyral, 4 parts of modified polytetrafluoroethylene wax micropowder, 0.3 part of rare earth chloride, and 1 part of pigment.

[0045] Described filler is made up of the raw material of following weight part:

[0046] 30 parts of precipitated barium sulfate, 8 parts of rutile titanium dioxide, 7 parts of active silica powder, 4 parts of mica powder, 2.5 parts of aluminum tripolyphosphate, and 0.5 parts of fumed silica.

[0047] The fineness of the precipitated barium sulfate, rutile titanium dioxide, active silicon micropowder and mica pow...

Embodiment 3

[0057] An epoxy powder primer used for the anticorrosion coating on the outer wall of deep-sea oil pipeline steel pipes consists of the following raw materials in parts by mass:

[0058] 45 parts of E-12 epoxy resin, 20 parts of novolac epoxy resin, 40 parts of filler, 12 parts of curing agent, 0.5 parts of antioxidant, 0.7 parts of coupling agent, 1.4 parts of benzoate, 0.8 parts of leveling agent 2 parts, 2 parts of graphene, 2 parts of polyvinyl butyral, 4 parts of modified polytetrafluoroethylene wax micropowder, 0.4 part of rare earth chloride, 2 parts of pigment.

[0059] Described filler is made up of the raw material of following weight part:

[0060] 35 parts of precipitated barium sulfate, 10 parts of rutile titanium dioxide, 7 parts of active silica powder, 5 parts of mica powder, 3 parts of aluminum tripolyphosphate, and 1 part of fumed silica.

[0061] The fineness of the precipitated barium sulfate, rutile titanium dioxide, active silicon micropowder and mica po...

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Abstract

The invention provides an epoxy powder primer used for anticorrosion paint for outer walls of deep sea oil transportation steel pipes and a preparing method thereof. The epoxy powder primer comprises following raw materials by mass: 40-50 parts of E-12 epoxy resin, 10-25 parts of linear phenolic epoxy resin, 25-45 parts of a filler, 9-15 parts of a curing agent, 0.1-1 part of an antioxidant, 0.2-1 part of a coupling agent, 0.9-1.8 parts of benzoate, 0.3-1 part of a levelling agent, 1-3 parts of graphene, 1-2 parts of polyvinyl butyral, 3-5 parts of modified polytetrafluoroethylene wax micropowder, 0.2-0.4 part of rare earth chloride and 1-3 parts of pigment. The epoxy powder primer has excellent wear resistance, resistance to pressure, bending resistance and impact resistance, is excellent in adhesion force and fraction of coverage for steel pipes, and can effectively protect the steel pipes from being corroded by various corrosive media in sea water for a long term.

Description

technical field [0001] The invention relates to the anticorrosion technology of marine engineering steel pipes, in particular to an epoxy powder primer used for anticorrosion coatings on the outer walls of deep sea oil transportation steel pipes and a preparation method thereof. Background technique [0002] 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 adopted by most countries. Although pipeline transportation has many advantages, on the seabed with high concentration of electrolyte, high pressure and low temperature, and complex ecological environment, submarine oil and gas transportation pipeline transportation faces more severe corrosion and application environment. Therefore, it is very important to study the coatings for seawater stress corrosion and scratch resistance to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D163/04C09D129/14C09D5/08C09D5/03C09D7/12
CPCC08K2201/014C08L2205/02C08L2205/035C09D5/033C09D5/08C09D7/47C09D7/61C09D7/63C09D7/65C09D163/00C08L63/04C08L29/14C08L27/18C08K13/02C08K3/16C08K3/04C08K5/098C08K2003/3045C08K3/36C08K2003/2241
Inventor 姚正军姚田甜周金堂李天明刘沛江
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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