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Preparation and Characterization of Carboxyl-terminated Poly(butadiene-co-acrylonitrile)-epoxy Resin Prepolymers for Fusion-bonded-epoxy powder coating

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Journal of Wuhan University of Technology(Materials Science) 2012年第4期27卷 694-701页

作者：刘敬成刘晓亚 School of Chemical & Material Engineering Jiangnan University

Liquid carboxyl-terminated poly（butadiene-co-acrylonitrile）（CTBN）-epoxy resin（EP） prepolymers were prepared with different contents of *** chemical reactions between EP and CTBN were characterized by Fourier ransform infrared（FTIR） spectroscopy and gel permeation chromatography（GPC）.The scanning electron micrograph（SEM） and dynamic mechanical analysis（DMA） of curing films showed phase separation,and the rubber particles were finely dispersed in the epoxy *** properties analysis of curing films showed that impact strength and elongation at break increased significantly upon the addition of CTBN,indicating good toughness of the modified epoxy *** analysis（TGA） showed that the incorporation of CTBN had little effect on the thermal stability of ***-bonded-epoxy（FBE） powder coatings modified with CTBN-EP prepolymers were *** experimental results demonstrate the ability of CTBN-EP prepolymers,toughening technology to dramatically enhance the flexibility and impact resistance of FBE coatings without compromising other key properties such as corrosion protection.

关键词： epoxy powder coating carboxyl-terminated butadiene acrylonitrile prepolymers

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Effects of direct stray current on the performance of cathodic disbonding epoxy powder coatings

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Petroleum Science 2019年第6期16卷 1417-1429页

作者： Yan-Yu Cui Rui-Tao Bu De-You Wang Yu-Jun Wang College of Airport Civil Aviation University of ChinaTianjin 300300People’s Republic of China Beijing Aviation Oil Construction Limited Company Beijing 100012China

The influence of the direction and magnitude of direct(DC)stray current on the disbonding performance of epoxy powder coating was studied by using electrochemical impedance spectroscopy and scanning electron microscopy *** results show that the application of DC stray current could accelerate the anodic *** peeling degree of the coating increases as the magnitude of positive DC stray current interference increases in the range of 2–*** 16V positive stray current disturbance,the degree of coating disbonding *** the application of negative stray current,the coating peeling becomes more serious,and the degree of peeling increases as the DC stray current increases.

关键词： epoxy powder coating DC stray current coating disbanding

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Study on Low Application Temperature Process of Three Layer Polyethylene coating

Study on Low Application Temperature Process of Three Layer ...

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The 2011 International Conference on Key Engineering Materials and Computer Science(KEMCS 2011)

作者： SHAO Huaiqi GUO Xiaoyan JIANG Tao ZHANG Qibin College of Material Science and Chemical Engineering Tianjin University of Science and Technology Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and EngineeringNankai University CNPC Research Institute of Engineering Technology

The mechanical property of X80 longitudinally welded pipe, as part pipeline for second west-east natural gas transmission pipeline project, is disadvantageously affected by normal coating process of three layer polyethylene coating(3LPE)The low application temperature process of three layer polyethylene coating coated at 18595℃ was studied to meet the requirement of the coating temperature of X80 longitudinally welded pipeThe suitable epoxy powders and coating process were determined by evaluating coating properties of varied epoxy powdersThe properties of 3LPE, which was coated by using suitable low temperature cured epoxy powder at temperature of 18595℃, were nearly same to the ones of 3LPE at the normal coating temperature(20030℃) and meet the requirement of external anti-corrosion properties of X80 longitudinally welded pipeAccording to the results, a criteria was provided to CNPC and applied to project of second west-east natural gas transmission pipeline.

关键词： three layer polyethylene low application temperature epoxy powder coating X80 longitudinally welded pipe

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