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The US Environmental Protection Agency defines "Volatile Organic Compounds (VOC)" in 40 CFR 51.100(s) as “any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, which participates in atmospheric photochemical reactions.”
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Epoxy solvent-borne coatings are well established for protective coatings due to their outstanding adhesion and corrosion resistance. Since the passage of the Clean Air Act in 1990, coating formulators have developed alternatives to the traditional volatile organic compounds (VOCs) and hazard air pollutants (HAPs) historically used in solvent-borne protective coatings. The two main approaches employed have been high solids coatings and replacement of solvents with water.
Most flooring materials require a dry sub-straight before they can be applied and many of the flooring manufacturers have added maximum floor moisture content for their warranties to maintained. Contractors responsible for getting a building turned over to the owner are often finding themselves making a choice between shot basting and sealing the floors or setting up a temporary climate control system.
The presentation is meant to be a guide for owners, contractors, and engineering/inspection teams – from the perspective of a licensed resident engineer – on how to be successful bidding, scheduling, coordinating, and performing work on a large scale and high-profile coatings contract. Contractors will gain insight into aspects of the project that may be outside their specialty and see examples of unanticipated issues that develop during a major project that should be considered when preparing a bid.
Compliance with California's Prop 65 regulations have become even more complicated since the new Clear and Reasonable Warning labeling rules took effect on August 30, 2018. These changes are a definite game changer. With this legal imperative, companies selling products in California may need to consider specific and proactive compliance strategies to address the various implications of the rule. In particular, the new warning labels will be required to list at least one chemical that prompted the warning, along with its associated health effects.
Over the last thirty years, I have been asked by numerous people, including my children, what I do for a living. After trying to explain about corrosion, site condition assessments, coating system selection, specification writing, inspection, training, etc., I default to a standard answer that I am sure many of my readers have used - "I watch paint dry."
Fire is the biggest threat for the crews in aircraft, ships, submarines, and land vehicles. As a result of such threats there have been use of fire/flame retardants coatings increased exponentially to curb economic and social consequences of fire [1]. There are various types of coatings available to fight against the fire. Two classes of fire protection technologies are being used currently, 1) Fire retardant and 2) Fire resistant. Fire retardant coatings are passive fire protection coatings where such coatings can slow down the spread of the flames allowing more time for evacuation and firefighting. Fire resistant coatings typically inhibiting the flame penetration or do not ignite upon in contact with fire [2].
Choosing the right approach to water tower maintenance maximizes budgets and service life.
A vintage water tank, approximately 2 million gallon capacity, survives from the 1960’s into the 21st century to find its roof collapsing due to an inadequate paint job. A structural assessment and root cause analysis are made.
Current and impending environmental regulations are leading to the development and use of new technologies in a variety of marine and protective coatings applications. Among the various challenges presented to the coatings industry, the desire to decrease the level of volatile organic compounds (VOCs) in traditional solventborne coatings ranks among the most prevalent.
With a history of proven performance in architectural and industrial coatings and the ability to adhere to less-than-ideally prepared substrates, alkyd resins have remained at the forefront of coating technology for well over 50 years. With such an established history, alkyds are often thought of as old technology and synonymously associated with flammable solvents and high levels of volatile organic compounds (VOC). These historical associations are not the contemporary story.
The evaluation of clear waterborne acrylic coatings as topcoats in field-applied protective coating systems will be described. Clear coatings were evaluated over both waterborne and solventborne systems. The results of the effects of waterborne systems on properties such as corrosion resistance, gloss, and accelerated weathering will be discussed.