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There are several Ultra-High Build (UHB) Coatings that are applied today. These are typically Amine epoxies, have a 2:1, 3:1, or 4:1 mix ratio, are 95% to 100% volume solids, have a pot life of 20-45 minutes at 25 degrees Celcius, and are applied to a DFT of 500 - 3000 microns.
These coatings are often applied as tank linings, or on marine structures, structural steel and as various other protective coatings, with a long (10+ years) service life requirement.
It is these coatings we are discussing today.
Ultimately, the best solution for spraying Ultra High Build coatings is a plural component sprayer.
Should, however, UHB coatings have to be sprayed with standard single-leg machines, the following 12 tips will help ensure a successful job:
|The four key advantages of these types of systems are as follows:|
No pot life problems
Product heating for reduced viscosityBy reducing viscosity 'sprayability' is increase and in turn, less solvent is required.
Reduction in material wasteBy mixing materials as it is applied, the only waste at the end is what's left between mixer and gun, not 1/4 to 1/2 a kit as is commonplace when 'hot potting'.
Elimination of off-ratio mixingOne of the most common causes of coating failure and waste is incorrect mixing ratios. The electronic controls in plural component sprayers ensures material is always dispensed at the correct ratio. Should it start to go off-ratio, the machine will either shutdown or alert you.
Contact Blast-One to talk to our team of experts for more information on spraying UHB coatings.