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Daily Quiz (41)


When specifying epoxies for green concrete, what attributes are important?


True or false: A flake-filled epoxy novolac is a reasonable selection for use in a flue-gas desulfurization unit.


True or false: Carbonation is sometimes formed by the reaction of an amine with carbon dioxide and water to create amine blushing of epoxy coatings.


The U.S. Army Corps of Engineers has developed waterborne epoxy coatings that exceed the performance of high-VOC coatings that were traditionally used for locks and dams.


True or false: Fusion-bonded epoxy coatings are sometimes specified for sheet piling.


For successful application to green concrete, epoxies must be vapor-permeable and must have what other characteristic?


An epoxy curing agent is derived from what natural source?


True or false: Epoxy technology was not commercialized until the early 1960s.


What performance property of epoxy resins makes them useful as wood repair products?


True or false: Fire-resistive, intumescent coatings sometimes have epoxy and sometimes acrylic resin systems.


True or false: Flake-filled epoxy novolacs have been used to protect metal in flue gas desulfurization units.


True or false: The installed cost of thick-film resinous coating systems, such as high-build epoxies and polyureas, on concrete floors ranges from $3.50 to $7.00 per square foot, according to a recent D+D In Depth article.


What is a generic name for a hybrid coating that combines epoxy with siloxanes?


True or false: Minimal barrier protection is a major weakness of epoxy coatings.


What epoxy curing agent is made with the oil derived from a nut shell?


True or false: According to a JPCL article in 2014, high solids epoxies tend to have shorter pot lives but longer drying times than conventional epoxies.


What term is normally used to describe surface opalescence on epoxy films caused by reaction of amine co-reactant with carbon dioxide and water?


True or false: Epoxies have better alkali resistance than many other polymers.


True or false: Some epoxy coatings are formulated for application to green concrete that has cured for only 24 hours.


True or false: A silepoxy is formed by the combination of epoxy with siloxane.


True or false: A zinc silicate primer is classified as an organic zinc-rich primer.


True or false: Epoxies that are insensitive to high pH and are vapor-permeable have been developed for green concrete (concrete that has set but not fully cured).


Epoxy coatings formulated for application over green concrete (less than 28 days of cure) must withstand what special substrate conditions?


Where would you be most likely to use an epoxy novolac?


True or False? Epoxy technology was not commercialized until the 1940s.


What coating defect is caused by exceeding the recoat interval recommended by the manufacturer for an epoxy coating?


Anatase and rutile are types of what paint component?


True or False: A two-component epoxy is a thermoplastic coating.


Hybrid coatings that combine epoxies with siloxanes are called what?


What is generally considered a weakness of epoxy coatings?


True or false: Fusion-bonded epoxy coatings are cured by UV light.


True or false: Fusion bond epoxy (FBE) coating is widely used to protect structural steel in power plants.


True or false: Two- and three-coat epoxy systems are often recommended for ships' ballast tank linings.


The epoxy curing agent phenalkamine is derived from what source?


Two-component epoxy coatings cure by what mechanism?


An epoxy-modified siloxane clear coating would be classified as what type of anti-graffiti coating?


What coating defect is likely to be caused by exceeding the recoat interval recommended for an epoxy?


The term “mastic,” as in epoxy mastic, often refers to what characteristic?


The first epoxy coatings were sold in what year?


Bisphenol A is combined with which of the following to produce epoxy resins?


Which of the following generic coating types is not an alternative to polyurethane topcoats on metal substrates in atmospheric service?


 
 
   

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