Why do Powder Coatings Fail?
There are many reasons why coatings fail and this can normally be attributed to poor application and inept quality assurance practices. Below are a list of why the powder coating process might fail...
Ultra Violet Radiation (UV)
Ultra Violet radiation from the Sun will breakdown many coatings. Coatings may discolour, get brittle and crack.
Salts
These can be underneath the powder at coating time and can cause corrosion to the object leading to early failure of the coating. This endorses the need for a good working enironmental with rigid procedures.
Pinholes
A single layer of coating runs the risk of pinhole size coating failures. These permit chemicals to attack the unprotected surface and the bonding. Again, this puts the focus on quality assurance and procedures.
Brittleness
Some coatings are more brittle than other, overly brittle coatings my crack or chip.
Abrasion
Different type of coating handle abrasion and wear to differing extents. It is important to select the correct kind of coating to take account of wear and tea.
Links in this section:
• why do coatings fail? • why coatings don't stick? • powder types & suitability
• health & safety documentation •chemical resistance
There are many reasons why coatings fail and this can normally be attributed to poor application and inept quality assurance practices. Below are a list of why the powder coating process might fail...
Ultra Violet Radiation (UV)
Ultra Violet radiation from the Sun will breakdown many coatings. Coatings may discolour, get brittle and crack.
Salts
These can be underneath the powder at coating time and can cause corrosion to the object leading to early failure of the coating. This endorses the need for a good working enironmental with rigid procedures.
Pinholes
A single layer of coating runs the risk of pinhole size coating failures. These permit chemicals to attack the unprotected surface and the bonding. Again, this puts the focus on quality assurance and procedures.
Brittleness
Some coatings are more brittle than other, overly brittle coatings my crack or chip.
Abrasion
Different type of coating handle abrasion and wear to differing extents. It is important to select the correct kind of coating to take account of wear and tea.
Links in this section:
• why do coatings fail? • why coatings don't stick? • powder types & suitability
• health & safety documentation •chemical resistance
Coating Types:
• Epoxy Polyester Powder
• Epoxy Powder
• Polyester Powder
• Speciality Powder
Technical Sheets• Click here to download
