Chapter 8 - Coating Types And Curing Mechanisms

Question 1

List 2 non convertible coating types.

Answer 1

Vinyl and chlorinated rubber

Question 2

List three convertible coating curing mechanisms

Answer 2

Oxidation, Co reaction polymerization, hydrolysis and fusion.

Question 3

List two characteristics of oxidation cure coatings.

Answer 3

Not suitable for immersion service.

not suitable for use over alkaline substrate. Limited dry film thickness per coat.

Question 4

List three coating types that cure by polymerization

Answer 4

Epoxies, polyurethane, polyureas, polyaspartics, polysiloxanies

Question 5

Induction time is?

Answer 5

The time required by the product data sheet coatings manufacture between mixing the coating and the start of application

Question 6

What is a main requirement for a hydration coating to cure?

Answer 6

Moisture

Question 7

Industrial and marine coatings are commonly referred to by?

Answer 7

Generic resin type

Question 8

Oil based coatings applied over alkaline surfaces may result in?

Answer 8

Saponification.

Question 9

The two broad classifications for curing mechanisms are.

Answer 9

Non convertible and convertible.

Question 10

Vinyl esters are never used as a?

Answer 10

Primer

Question 11

Vinyl esters are often referred to as

Answer 11

Linings

Question 12

Thermoplastic coatings soften when heated and what when cooled

Answer 12

Return to there original hardness

Question 13

Thermoset coatings harden when heated and what when cooled?

Answer 13

Retain their hardness

Question 14

Non convertible coatings cure solely by

Answer 14

Solvent evaporation

Question 15

What is a special case of solvent evaporation cure employed by acrylic, latex and epoxy emulsion coatings?

Answer 15

Coalescence

Question 16

Convertible coatings undergo a chemical change known as?

Answer 16

Polymerization

Question 17

Non convertible coatings do not?

Answer 17

Polymerize