Coating Types Flashcards
Acrylics convertible or non convertible
Non convertible
Acrylics curing mechanism
Coalesces
Acrylics # of compounds
1
What are the characteristics of acrylic paint?
Excellent weathering and UV resistance
Can be applied as coalescence curing emulsions/water dispersions
Decorative rather than corrosion resistance
Alkyds organic or non organic?
Organic
Alkyds convertible or non convertible?
Convertible
Alkyds curing mechanism is?
Oxidation
Alkyds # of compounds?
2
What is a characteristics of an alkyd coating?
Referred to as oil based paints
Advantages - single packaged materials
Broad range of colours
Disadvantages - can be very slow curing products
Limited thickness per coat
Chlorinated rubber organic or non organic?
Organic
Chlorinated rubber convertible or non convertible?
Non convertible
Curing mechanism for chlorinated rubber is?
Evaporation
of compounds in chlorinated rubber is?
1
What are the characteristics of chlorinated rubber?
Large quantities of VOCs
not widely used anymore.
Evaporation curing
Excellent resistance to water, sunlight, and many chemicals
Epoxy organic or non organic?
Organic
Epoxy convertible or non convertible?
Convertible
Curing mechanism of epoxy?
Polymerization
of components for epoxy?
2
What are the characteristics of epoxy?
Two component epoxy resin (base) and curing agent (converter)
Can be solvent based, water based or solvent free
Excellent adhesion, chemical and water resistance and wet adhesion
Amine cured epoxies are especially sensitive to amine blush
Chalking with atmospheric (UV) exposure
Furan organic or non organic?
Organic
Furan convertible or non convertible?
Convertible
Characteristics of furan?
not common
Resins made from organic material
Broad range of chemical resistance
Blend with cement to form a trowelable mortar
Applied by bricklayers not coating applicators
Latex emulsion organic or non organic
Organic
Latex emulsion convertible or non convertible?
Non convertible
Curing mechanism for latex emulsion
Coalescence
Characteristics of latex emulsion?
Low humidity needed.
Resins normally thermoplastic resin types
Phenolic organic or non organic
Organic
Phenolic convertible or non convertible?
Convertible
Characteristics of phenolic?
Immersion service
Typically used where low pH environments and higher temperatures are factors
Excellent resistance to acids
Polyaspartic organic or non organic?
Organic
Polyaspartic convertible or non convertible?
Convertible
Curing mechanism for polyaspartic is?
Polymerization
of compounds in polyaspartic?
2
Characteristics of polyaspartic is ?
Low VOC system
Pot life 5min to several hours
Films builds 15mils in a single pass
Polyester organic or non organic
Organic
of compounds is polyester coating?
2
Characteristics of polyester coating?
Industrial and marine grade. Short pot life. Petroleum storage tank linings. High abrasions resistance Glass flake reinforced high build coating Excellent moisture resistance
Polysiloxanes organic or non organic?
Both organic and inorganic
Polysiloxanes convertible or non convertible
Convertible
Characteristics of polysiloxanes coating are?
Used in services with abrasion, chemicals, extreme UV and high temperatures
Three major categories
1) inorganic polysiloxanes
2) epoxy-polysiloxanes hybrids
3) acrylic-polysiloxanes hybrids
Polyurethane organic or non organic?
Organic
Polyurethane convertible or non convertible
Convertible
Curing mechanism for polyurethane is?
Polymerization
of components for polyurethanes are?
2
Characteristics of polyurethanes are?
Two major types - aliphatic : resistant to UV
Aromatic - chemical resistance in immersion
Excellent gloss
Many hazards is isocyanate
Available with variety of curing times
Polyureas organic or non organic
Organic
Polyureas curing mechanism is?
Polymerization
Polyureas # of components are?
2
Characteristics of polyureas coatings are?
Very flexible, short cure time
Most require the use of an epoxy primer on steel
Silicones organic or non organic
Non organic
Characteristics of silicone coatings are?
Resist high temp and UV
Used as foul-release coating in marine industry
Formed by chemical modification of quarts, sand or silicon
Most Require heat to cure but some cure at ambient temperatures.
Vinyl esters organic or non organic?
Organic
of compounds in vinyl esters coating
2
Characteristics of vinyl esters coating?
Lining , short pot life, excellent abrasion resistance
Inorganic zinc organic or non organic?
Non organic
Inorganic zinc curing mechanism?
Hydration ( CO2)
of compounds in inorganic zinc
2
Characteristics or inorganic zinc?
High temp resistance 400 degrees Celsius Self healing Does not adhere to its self Widely used primer for steel structures Provides cathodic protection Resistant to different chemicals
Organic zinc organic or non organic?
Organic
of compounds in organic zinc
2
Characteristics of organic zinc
Doesn’t take humidity to cure
Organic resin with zinc filler examples epoxy, polyurethane etc
Limited cathodic protection factor
Vinyls organic or non organic
Organic
Vinyls convertible or non convertible
Convertible
Characteristics of vinyl coating is?
Earliest coating
We’re used on highway bridges and extensively in the marine industry
Contain large amount of VOCs
Acrylics organic or non organic?
Organic