Daily Quiz (24)


True or false: Polysiloxanes are a variation on polyurethane coating chemistry that allows for faster curing times and higher film builds.


True or false: A polysiloxane coating is a version of the larger generic class of polyureas.


True or false: Polysiloxane topcoats are not noted for having a high degree of thermal stability and heat-resistance.


True or false: Acrylic resin can be used in a polysiloxane coating.


What is the common generic chemistry in all polysiloxane coating types?


True or false: ASTM has a standard for polysiloxane topcoats for use over spray polyurethane foam roofing.


True or false: A recent JPCL article describes a third-generation polysiloxane coating with a completely inorganic binder.


What is the common chemistry in all polysiloxane coating types?


What is another name for aliphatic polyurea?


True or false: For high-performance protective coatings, polysiloxanes that combine silicone with acrylic or epoxy have demonstrated the greatest benefit.


Polysiloxanes are noted for all but which one of the following performance properties?


True or false: Two-coat systems consisting of zinc primers and finish coats based on polyaspartics or polysiloxanes have proven effective on steel bridges, according to a JPCL article on innovations in bridge coatings.


True or false: High-performance polyurethanes, polyaspartics, polysiloxanes, and fluoropolymers are best bets to retain gloss and color for long periods in atmospheric exposure.


True or false: Some suppliers point out that use of a polysiloxane topcoat can enable a two-coat system for corrosion control of steel substrates, as opposed to a conventional three-coat system, such as zinc/epoxy/polyurethane.


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


True or False: Polysiloxanes are claimed by some supplier companies to be effective as part of a two-coat system for protecting steel from corrosion and providing durable UV resistance.


Why is a polysiloxane classified as a hybrid coating?


True or false: Polysiloxane coatings are isocyanate-free.


What is the common chemistry in all polysiloxane coating types?


True or false: Moisture-cured, single-pack polysiloxanes have been developed and are now on the market.


True or false: Despite their higher cost, polysiloxanes and fluorourethanes are sometimes specified for water tank exteriors.


What makes a polysiloxane a hybrid coating?


Why is a polysiloxane classified as a hybrid coating?


True or false: Acrylic-modified polysiloxane coatings generally have strong UV resistance and gloss retention properties.


 
 
   

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