May 2023 Vol. 1

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 * Alexander Ahrens * Baltoflake™ * Coating Condition Survey * Dulux * ExcelPlas Labs * Epoxy Phenolic Coatings * Failure Analysis * Graphene * Hempel * Jotun * INPEX * Intertherm 228 * PCN * Protective Coatings * Richard Kopinski * SeamFlow™ * Self-Healing Coatings * Sherwin Williams * Smart Coatings * Troels Skrydstrup


Judgement in Lawsuit Brought by INPEX Against AkzoNobel NV Over Allegedly Defective Epoxy-Phenolic Coating
Following the use of Intertherm 228 (I228) on pipework and equipment modules, degradation and decolourisation issues arose with respect to the coated pipework and equipment.

Chemical Spill at Akzo Nobel Coatings Plant in Northwest Houston


Dulux Maker & Akzo Nobel’s Price Hikes, Resilient Volumes Boost Profit

Coating Consultant Warren Brand Has Passed Away

Akzo Nobel Coating Guru Richard Kopinski Named 2023 Scientist of the Year

Glass Flake Coating ‘Could Mean End to Substructure Surface Maintenance’
30 years’ exposure to the North Sea’s harsh environment, analysis revealed that the coating at the splash zone was intact, still smooth and showing no signs of delamination.

Hempel’s New Underwater Hulls Coating Reduces Emissions and Costs

Independent Coating Consultancy with a Unique and Comprehensive Understanding of Protective Coatings in the LNG, Oil & Gas, Mining, Infrastructure and Marine Sectors

Asian Focus for Hempel’s Seam Fairing Solution for Ship Hulls

At Last a Route for Circularity for Epoxy Coatings
Catalytic Disconnection of C–O Bonds in Epoxy Resins and Coatings

Steel Bridge-Coating Systems and Their Environmental Impacts: Current Practices and Future Trends [PDF]

The Importance of Hull Coating Specifications

Coatings 101: Condition Assessments: An Overview


Recent Advances in Epoxy Coatings for Corrosion Protection of Steel: Experimental and Modelling Approach-A Review

New Epoxy and Hardener System Based on an Imidazolium Ionic Liquid as an Anticorrosive Coating for Steel in the Marine Environment

Enhanced Protection of Epoxy Coatings with Manganese-Doped Zinc Molybdate with Synergistic Corrosion Resistance Effects

Synthesis, Characterization and Protective Efficiency of Novel Polybenzoxazine Precursor as an Anticorrosive Coating for Mild Steel

Corrosion Control by Autonomous Self-Healing Epoxy Coatings Based on Superabsorbent Healing Agents

Mechanochemical Stable Coating for Lasting Corrosion Protection

Temporary Anti-Corrosive Double Layer on Zinc Substrate Based on Chitosan Hydrogel and Epoxy Resin

CO2 Permeation Through Fusion-Bonded Epoxy Coating in Humid Environments

Studying Weathering Degradation of Polyurethane Coating Over Epoxy Primer

Exploring Epoxy Coating Failures with ExcelPlas
While epoxy coatings are generally durable and effective at preventing corrosion, there are a few common types of epoxy coating failures that can occur:

  • Adhesion failure: This occurs when the epoxy coating fails to properly adhere to the surface of the pipe, which can be caused by factors such as improper surface preparation or a poorly formulated coating. Adhesion failure can result in the coating peeling or flaking off, exposing the underlying steel surface to corrosion.
  • Blistering: This occurs when small bubbles or blisters form on the surface of the epoxy coating, which can be caused by improper surface preparation, moisture contamination, or excessive heat during curing.
  • Cracking: This occurs when the epoxy coating develops small cracks, which can be caused by factors such as thermal expansion and contraction, improper coating thickness, or exposure to chemicals.
  • Delamination: This occurs due to intercoat or interfacial adhesion failure due to the presence of a weak boundary layer such as silicone or hydrocarbon oil contamination.


Failure Analysis and Investigation of Protective Coatings in Mining, Marine Offshore Oil & Gas Chemical Plants, Energy Infrastructure and Bridges (Ask the Experts)

Critical Questions for Protective Coatings for Asset Protection in Oil & Gas, LNG:

  • Why is the coating not stopping corrosion?
  • Why is the coating delaminating or blistering?
  • Has the coating been correctly specified / applied?
  • Does the coating meet the manufacturing standard, including properties such as correct hardness/cure, adhesion and thickness?
  • What surface preparation and atmospheric conditions must be achieved to successfully apply the coating?
  • Does the coating have any defects in it? How will these affect performance?
  • Why did the coating fail? Root cause assessment.
  • How can the coating be successfully repaired/remediated so that it doesn’t fail again?

ExcelPlas Labs can answer these questions and more…


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This newsletter is brought to you by ExcelPlas Coating Labs (

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.

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