Quantifying Sound Coating Adhesion

2000 ◽  
Author(s):  
C. D. Gaughen
Keyword(s):  
Coating Adhesion

Polyvinyl chloride/epoxy double layer powder coating enhances coating adhesion and anticorrosion protection of substrate

2021 ◽  
Vol 158 ◽  
pp. 106335
Author(s):  
ChuanXing Wang ◽  
YuYing Han ◽  
Wenxue Wang ◽  
Juan Liu ◽  
Ning Wang ◽  
...  
Keyword(s):  
Polyvinyl Chloride ◽  
Double Layer ◽  
Powder Coating ◽  
Coating Adhesion ◽  
Anticorrosion Protection

Effect of preliminary vacuum plasma treatment on coating adhesion

2016 ◽  
Author(s):  
Vladimir A. Slabodchikov ◽  
Dmitry P. Borisov ◽  
Vladimir M. Kuznetsov
Keyword(s):  
Plasma Treatment ◽  
Coating Adhesion ◽  
Vacuum Plasma

The Influence of Contaminants on the Failure of Protective Organic Coatings on Steel

CORROSION ◽  
1977 ◽  
Vol 33 (6) ◽  
pp. 209-217 ◽  
Author(s):  
E. L KOEHLER
Keyword(s):  
Atmospheric Corrosion ◽  
Specific Effect ◽  
Organic Coating ◽  
Organic Coatings ◽  
Basic Solution ◽  
Water Displacement ◽  
Coating Adhesion ◽  
Conductive Film ◽  
Filiform Corrosion ◽  
Corrosion Mechanisms

Abstract While the ability of the organic coating to conduct corrosion currents may sometimes come into play, primarily the corrosive deterioration of protective organic coatings is brought above by the flow of corrosion currents through a film of electrolyte beneath the organic coating. Any of several specific mechanisms may be involved. The influences of contaminants lie in their abilities to: (1) draw water through the organic coating to establish a conductive film of moisture, (2) provide ions to carry the corrosion currents, and (3) provide ions of specific effect on underfilm corrosion mechanisms. Specific attention is given here to the effects of underfilm salt contaminants on atmospheric corrosion. Filiform corrosion observed is interpreted as a form of anodic undermining corrosion, which involves transport of the anion and the effect of the anion on the dissolution of metal from beneath the organic coating. Cathodic detachment, also observed, is interpreted in terms of cationic transport and the ability of the specific cation to form a strongly basic solution, resulting in loss of organic coating adhesion by water displacement.

Electrophoretic Deposition of Lignin Reinforced Polymer Coatings

2015 ◽  
Vol 654 ◽  
pp. 247-251 ◽  
Author(s):  
M. Federica de Riccardis ◽  
Daniela Carbone ◽  
Daniela Cuna
Keyword(s):  
Melting Point ◽  
Carbonyl Group ◽  
Electrophoretic Deposition ◽  
Composite Coatings ◽  
Polymer Coatings ◽  
Chemical Interactions ◽  
Coating Adhesion ◽  
Beneficial Effects ◽  
Reinforced Polymer ◽  
Conductive Substrates

Composite coatings based on PEEK and Lignin were obtained by EPD. The addition of Lignin had some beneficial effects, the most relevant being an increased coating adhesion on conductive substrates. Before using in EPD suspensions, Lignin was functionalised by a carbonyl group. This functionalisation produced chemical interactions between PEEK powder and Lignin, and, as a consequence, better results in terms of both EPD efficiency and adhesion coating. Moreover, the addition of Lignin increased the hydrophobicity of PEEK coatings when they were thermally treated at temperature lower than the melting point of PEEK.

scholarly journals Pretreatment of CFRP by Amino Thermoset Abrasive Air Jet Machining

2021 ◽  
Author(s):  
Yangyang Zhao ◽  
Wenzhuang Lu ◽  
Yansong Zhu ◽  
Dunwen Zuo
Keyword(s):  
Orthogonal Experiment ◽  
Impact Angle ◽  
Erosion Mechanism ◽  
Coating Adhesion ◽  
Fiber Damage ◽  
Air Jet ◽  
Five Factors ◽  
Reinforced Plastic ◽  
Aircraft Skin ◽  
Four Levels

Abstract An effective pretreatment method of carbon fiber reinforced plastic (CFRP) aircraft skin was proposed. In this article, the function of the amino thermosetting abrasives entrained by the airflow on the CFRP aircraft skin is introduced and discussed to achieve the purpose of enhancing the coating adhesion and prolonging the service life. An orthogonal experiment with five factors and four levels was designed and carried out, including jet pressure, target distance and impact angle, moving speed and particle size. The best pretreatment process was obtained by analyzing surface morphology, wettability and adhesion. The erosion mechanism of CFRP coating pretreatment with abrasive impact was studied emphatically. The results show that the critical pressure for fiber damage is 0.4 MPa, and the better surface energy is 38.0 mN/m. Semi-ductile erosion has been identified as the main erosion mechanism of amino thermosetting abrasives eroding CFRP. Effective assurance was provided for the improved surface of the aircraft CFRP skin and enhanced coating adhesion in this study.

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