September 2019 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 * Axalta * Dulux * ExcelPlas * International Paints * Jotun

Akzo Nobel Coatings Shows Progress Towards Strategic Goals


Hempel Coatings Appoints New Group Director of Research & Development (R&D)

Self-Repairing Coatings for Corrosion Protection (A Review)

Assessment of Self-Healing Epoxy-based Coatings Containing Microcapsules Applied on Hot Dipped Galvanized Steel

Investigation of Loaded Halloysite Nanotubes with Novel Inhibitor as a Smart Anticorrosion Epoxy Coating

Electrochemical Study on Corrosion Resistance of Epoxy-Coated Reinforcing Steel in Bridge Concrete

A Mechanistic Study of Corrosion of Graphene and Low zinc rich Epoxy Coatings on Carbon Steel in Salt Environment

Enhancement of the Epoxy Coating Corrosion/Cathodic Delamination Resistances on Steel by a Samarium Based Conversion Coating

Graphene oxide encapsulated by mesoporous silica for intelligent anticorrosive coating: studies on release models and self-healing ability!divAbstract


ExcelPlas Protective Coating Assessment and Testing
ExcelPlas Testing & Inspection are all experienced in dealing with assessing corrosion and protective coatings on structures and facilities in the production of oil, gas and other resources within the marine environment.

ExcelPlas Protective Coatings Laboratory
To ensure the performance of protective coatings ExcelPlas Labs can test the following
* Thickness & Composition determination through the Paint Sample
* Elemental composition determination through the Paint Sample
* Advanced Polishing and Stereo Optical Microscopy (SOM)
* Polymer coatings identification by FTIR and NMR
* Coating Performance and Durability Assessment by Electrical Impedance Spectroscopy (EIS)
* Fracture mechanism determination of Protective Coatings
* Understanding film chemistry, thickness and hardness interplay
* Chemical compositions/variations correlation of Protective Coatings

Why DFT is So Important to 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 (

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.