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Daily Quiz (14)


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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