Enhancement of barrier and corrosion protection performance of epoxy coatings through adding eco‐friendly lamellar biochar

2022 ◽  
Author(s):  
Beibei Zhang ◽  
Gang Wang ◽  
Shenghua Ma ◽  
Hui Wang ◽  
Jinbo Bai
Keyword(s):  
Corrosion Protection ◽  
Epoxy Coatings

Mesoporous CeO2 containers in water-borne epoxy coatings for dual active corrosion protection of mild steel

2021 ◽  
Vol 158 ◽  
pp. 106376
Author(s):  
Songhua Gu ◽  
Hongwei Shi ◽  
Chunjie Zhang ◽  
Wei Wang ◽  
Fuchun Liu ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Epoxy Coatings ◽  
Mesoporous Ceo2 ◽  
Water Borne ◽  
Active Corrosion

Zinc-reduced graphene oxide for enhanced corrosion protection of zinc-rich epoxy coatings

2018 ◽  
Vol 123 ◽  
pp. 185-189 ◽  
Author(s):  
Shuai Teng ◽  
Yang Gao ◽  
Fengli Cao ◽  
Debin Kong ◽  
Xiaoyu Zheng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Corrosion Protection ◽  
Epoxy Coatings ◽  
Reduced Graphene

Application of factory-applied epoxy coatings for corrosion protection of buried trunk pipelines

2021 ◽  
pp. 293-303
Author(s):  
Александр Михайлович Ефремов ◽  
Петр Дмитриевич Волянский ◽  
Павел Олегович Ревин ◽  
Сергей Владимирович Ануфриев
Keyword(s):  
Corrosion Protection ◽  
Oil And Gas ◽  
Raw Materials ◽  
Epoxy Coating ◽  
Economic Feasibility ◽  
Directional Drilling ◽  
Epoxy Coatings ◽  
The Usa ◽  
Construction Experience ◽  
Main Production

При сооружении трубопроводов в России, странах Европы и Африки наиболее распространенным является применение труб с трехслойными полиэтиленовыми покрытиями. В то же время опыт строительства магистральных нефте- и газопроводов в США, Канаде, ряде других стран свидетельствует о возможности использования эпоксидных покрытий в качестве эффективной антикоррозионной защиты труб. В этой связи была начата научно-исследовательская работа по определению целесообразности применения двухслойных эпоксидных покрытий для антикоррозионной защиты магистральных трубопроводов подземной прокладки, эксплуатируемых организациями системы «Транснефть». Цель настоящего исследования - оценка технической и экономической целесообразности использования эпоксидных покрытий как альтернативы полиэтиленовой изоляции трубопроводов. Были проведены лабораторные исследования образцов трех систем эпоксидных покрытий, осуществлен сравнительный анализ технических свойств эпоксидной и полиэтиленовой изоляции. Установлено, что эпоксидные покрытия превосходят полиэтиленовые по ряду свойств, в частности обладают повышенной стойкостью к температурным воздействиям, УФ-излучению, катодному отслаиванию, а также повышенной механической прочностью, что позволяет обеспечить сохранность покрытия при строительстве трубопроводов методом наклонно-направленного бурения и прокладке в скальных грунтах. Основные мощности по производству сырья для эпоксидных порошковых покрытий локализованы в России, в то время как сырье для полиэтиленовых покрытий в основном производится за рубежом. Установлена экономическая целесообразность применения двухслойного эпоксидного покрытия как альтернативы трехслойному полиэтиленовому покрытию для трубопроводов больших диаметров - более 720 мм. Для внедрения труб с двухслойным эпоксидным покрытием на объектах ПАО «Транснефть» проводится его апробация, включающая строительство опытного участка трубопровода. When constructing pipelines in Russia, Europe, and Africa, it is the most common to use pipes with threelayer polyethylene coatings. At the same time, the oil and gas pipeline construction experience in the USA, Canada, and a number of other countries, as well as the construction of the Zapolyarye - Purpe elevated main pipeline by Transneft PJSC, indicates the possibility of using epoxy coatings as an effective pipe corrosion protection solution. In respect thereof, research study to determine the feasibility of using two-layer epoxy coatings for corrosion protection of underground pipelines operated by the Transneft system entities was instituted. The purpose of this study is to assess the technical and economic feasibility of using epoxy coatings as an alternative to polyethylene insulation of pipelines. Laboratory studies of samples of three epoxy coating systems, as well as a comparative analysis of the process properties of epoxy and polyethylene insulation were conducted. It has been established that epoxy coatings are superior to polyethylene coatings in a number of properties, in particular, they are characterized by increased resistance to temperature effects, UV radiation, cathodic disbondment, as well as increased mechanical strength, which makes it possible to ensure safety of the coating during the construction of pipelines by directional drilling and laying in rocky soils. The main production facilities for raw materials for epoxy powder coatings are localized in Russia, while raw materials for polyethylene coatings are mainly produced abroad. The economic feasibility of using a twolayer epoxy coating as an alternative to a three-layer polyethylene coating for pipelines of large diameters (over 720 mm (28 in)) was established. Testing for the introduction of pipes with a two-layer epoxy coating at the Transneft PJSC facilities is being performed, including construction of an experimental pipeline section.

Studies of the corrosion protection of immersed metallic structures by sub-aquatic applications of epoxy coatings

1993 ◽  
Vol 34 (10) ◽  
pp. 1685-1696 ◽  
Author(s):  
Y. Massiani ◽  
J.P. Crousier ◽  
A. Lazzeri
Keyword(s):  
Corrosion Protection ◽  
Epoxy Coatings ◽  
Metallic Structures

scholarly journals Evaluation of the anticorrosion of waterborne epoxy coatings containing cerium salt-activated ceria nanoparticles deposited onto carbon steel substrates

2018 ◽  
Vol 56 (3B) ◽  
pp. 96
Author(s):  
Anh Son Nguyen ◽  
Thuy Duong Nguyen ◽  
Thu Thuy Thai
Keyword(s):  
Carbon Steel ◽  
Corrosion Protection ◽  
Salt Spray ◽  
Ceo2 Nanoparticles ◽  
Ceria Nanoparticles ◽  
Epoxy Coatings ◽  
Artificial Defect ◽  
Waterborne Epoxy ◽  
Cerium Salt ◽  
Steel Substrates

The presence work investigates the corrosion protection of waterborne epoxy coatings containing CeO2 nanoparticles activated with cerium salt for the carbon steel substrates. First, the dispersion of activated nanoparticles in the epoxy matrix was observed by field emission scanning electron microscopy (FESEM). The electrochemical impedance spectroscopy (EIS) was carried out to evaluate the role of the activated-CeO2 nanoparticles in the organic coatings immersed in a 0.5 M NaCl solution. Thus, the effect of the cerium ion activated ceria nanoparticles on the coatings presented the artificial defect in the aggressive environment was examined via salt spray test. Complementary studies were performed using the cross-cut and pull-off test to assess the adherence properties of the samples. Results revealed that the presence of activated-CeO2 nanoparticles enhanced corrosion protection properties of waterborne epoxy coating without losing adherence properties.

scholarly journals Corrosion behavior of duplex polyaniline/epoxy coating on mild steel in 3% NaCl

2005 ◽  
Vol 59 (11-12) ◽  
pp. 317-320
Author(s):  
Milica Gvozdenovic ◽  
Branimir Grgur ◽  
Zorica Kacarevic-Popovic ◽  
Vesna Miskovic-Stankovic
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Corrosion Behavior ◽  
Epoxy Coating ◽  
Constant Current ◽  
Pani Film ◽  
Electrode Position ◽  
Gravimetric Analysis ◽  
Epoxy Coatings ◽  
New Findings

The corrosion behavior and thermal stability of epoxy coatings electrodeposited on mild steel and on mild steel with electrochemically deposited polyaniline (PANI) film were investigated by electrochemical impedance spectroscopy (EIS) and thermo gravimetric analysis (TGA). The aim of the paper was to present new findings on the corrosion protection of mild steel by a duplex PANI/-epoxy coating in 3% NaCI solution and to determine the effect of thin PANI film on the protective properties of the coating. PANI film was deposited electrochemically on mild steel from an aqueous solution of 0.5 mol dm"3 sodium benzoate and 0.1 mol dm"3 aniline at a constant current density of 1.5 mA cm"2. Non-pigmented epoxy coatings on mild steel and on mild steel with PANI film were obtained by cathodic electrode position at constant voltage and stirring conditions. The resin concentration in the electrode position bath was 10 wt.% solid dispersion in water at pH 5.7. The applied voltage was 250 V, the temperature 26?C and the deposition time 3 min. It was shown that thin PANI film could be used to modify the surface of mild steel prior to epoxy coating deposition, due to the increased corrosion protection of a duplex PANI/epoxy coating comparing to an epoxy coating on mild steel in 3% NaCl solution.

Waterborne bio-based epoxy coatings for the corrosion protection of metallic substrates

2019 ◽  
Vol 136 ◽  
pp. 105265 ◽  
Author(s):  
Shunli Zheng ◽  
Daniel Angel Bellido-Aguilar ◽  
Jun Hu ◽  
Yinjuan Huang ◽  
Xin Zhao ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Epoxy Coatings ◽  
Metallic Substrates
Sign in / Sign up

Export Citation Format

Share Document