PCN – Communicating News In Protective Coatings Globally in Real Time
Leading Source of Industry News on Protective Coatings for Oil & Gas, Pipelines, Marine and Construction
NEWSMAKERS: * Akzo Nobel * Axalta * Dulux * ExcelPlas * International Paints * Jotun * Nippon
DuluxGroup shareholders have overwhelmingly voted in favour of the company’s $3.8 billion sale to Japanese paint giant Nippon
Pipeline Coating Failures and Preventions
Action Launched Against Akzo Nobel (International Paints) Over Alleged Defects in Protective Coating
Corrosion Control on High Value Assets
Meeting corrosion protection goals is a tough job. These coatings must be carefully applied to high-value assets.
Protecting Industrial Facilities from Harsh Environmental Corrosion
“There is a huge need for an anti-corrosion coating that can go on in areas where conventional coatings tend to fail,”
Axalta Protective Coating Systems (NYSE:AXTA) Releases FY 2019 Earnings Guidance
Graphene and Boron Nitride Nanoplatelets for Improving Vapor Barrier Properties in Epoxy Nanocomposites (New Tech)
Enhancement of the Epoxy Coating Corrosion/Cathodic Delamination Resistances on Steel by a Samarium Based Conversion Coating (New Tech)
Effect of Surface Modified WO3 Nanoparticle on the Epoxy Coatings for the Adhesive and Anticorrosion Properties of Mild Steel (New Tech)
High Protective Performance Coatings for Mild Steel (New Tech)
Effect of Ageing on Cathodic Protection by Fusion Bonded Epoxy Coatings
Enhancing Corrosion Resistance of Epoxy Coating on Steel Reinforcement
Can a New Graphene Coating Save the Chinese Military from Rusting Away in the South China Sea?
Why DFT is So Important for Protective Coatings (ExcelPlas Coating Labs)
Generally, corrosion protection is provided by the ability of the cured system being able to slow down the passage of ions, oxygen and water down to the substrate. To meet this need, coatings manufacturers have developed technical products that have an optimum dry film thickness to provide maximum performance. Under thickness of a coating system can lead to a high concentration of small rust spots which spread over the surface – so called ‘rust rashing’. Over thickness can lead to solvent entrapment and stress in a coating leading to adhesion failure in the form of blisters, delamination or cracking.
In the same way, applying coatings for maintenance or cosmetic reasons on top of previously applied systems may initially appear to have extended the life of the structure.
However, continuous re-painting of certain systems can eventually create a failure of the total coating. This effect may not be evident for some weeks or months, but adhesion failures caused by internal stress generated by applying additional coatings is a common problem on maintenance contracts. To avoid such problems the coating surveyor needs to be aware of the coating specification and be aware of the products and the potential problems with thickness variations. Depending on the specific industry, there are a number of standards which refer to the use of dry film thickness gauges and how they should be used. SSPC – PA2, ASTM D7091, ISO 19840 and IMO PSPC all describe procedures in relation to measuring dry film thickness in different sectors, surfaces and substrates.
This newsletter is brought to you by ExcelPlas Coating Labs (http://www.excelplas.com/)
ExcelPlas Labs provides independent testing, analysis and investigation on protective coatings to prevent corrosion.
ExcelPlas has extensive analytical capabilities for testing of Protective Coatings and Insulation Consulting for major oil and gas companies.
We conduct corrosion surveys, coating sampling, coating analysis and testing to ensure coating specifications for a wide range of onshore and offshore clients in Australia and the Asia-Pacific Region.
ExcelPlas Labs offer a full range of coating testing and analytical services to Australia’s mining, oil, gas and infrastructure sectors.
Forensic analysis for undertaking various coating based failure investigations and problem solving.
ExcelPlas Undertakes Analysis & Testing of Polymer Coating Systems including:
• Epoxy Protective Coatings
• Epoxy-Phenolic Protective Coatings
• Fusion bonded epoxy (FBE)
• Dual-Layer Fusion bonded epoxy (DLFBE)
• Liquid applied epoxy (LAE)
• Abrasion resistant overcoat (ARO)
• Three-layer PE (3LPE)
• Multi-component liquid spray (MCL)
• Heat shrink sleeves (HSS)
Testing on Coatings that ExcelPlas can Undertake includes:
• Coating identification by Infra-red Analysis (FTIR)
• Degree of Cure by Thermal Analysis (DSC)
• Coating Filler Identification by X-ray Analysis (EDS/XRD)
• Coating Microstructure by Embedding, Polishing and Optical Microscopy (OM)
• Coating Thermal Stability and Composition by Thermogravimetric Analysis (TGA)
DSC – Phase transition/volatiles / Tg / degree of cure/characterisation
TGA – Volatile compounds, inorganic mass % mix ratio
Element mapping for chlorides on paint flakes
Microscopy -Count layers and thickness of layers
-Assess porosity and voids
-Check distribution and orientation of filler particles
Condition monitoring and analysis of corrosion prevention coatings (epoxies, epoxy-phenolics)
Testing of Epoxy Coatings (LAE, FJC, FBE), heat shrink sleeves and tapes, barrier tapes and meshes.