High Solids Paint
10-10-2011, 09:59 AM
#1
Honda-Tech Member
Thread Starter
High Solids Paint
I've been detailing more vehicles and its led me to research more about different types of paints and different types of clear coats.
I thought I'd start a discussion about High Solids Paint to see what some of the body guys in here think about it.
Here is a well written piece for those unfamiliar with High Solids Paint.
link: http://www.substech.com/dokuwiki/dok...-solids_paints
I thought I'd start a discussion about High Solids Paint to see what some of the body guys in here think about it.
Here is a well written piece for those unfamiliar with High Solids Paint.
link: http://www.substech.com/dokuwiki/dok...-solids_paints
High-solids paints
Dr. Dmitri Kopeliovich
High-solids paints are the paints containing at least 65% of solid components (binders, pigments and additives) mixed with a solvent serving as a vehicle.
Due to low content of solvent the viscosity of high-solids paints is 3-4 times higher than in conventional Solvent-borne paints and may reach 10000 cP (centipoise).
The viscosity of high-solids paints may be reduced chemical modification or heating the paint before application to 104-150°F (40-66°C).
High-solids paints are formulated as either a single-component or two-component systems:
Two-component high-solids paints start chemical curing (cross-linking) just after the components (resin and cross-linking agent) have been mixed together. The paints have very short pot life when mixed.
Single-component high-solids paints cure by heating (baking) to about 300-400°F (150-200°C).
Air dry single-component high-solids paints cure as a result of chemical reaction with Oxygen or moisture of the surrounding air at normal or slightly elevated temperature.
Polymer resins used as the binders in high-solids paints:
Epoxies
Urethanes
Alkyds
Vinyls
Acrylics
High-solids paints are applied by spray guns.
High pressure pumps are used in the spray equipment for application of high viscosity high-solids paints.
The paint viscosity may be reduced by a heater mounted between the pump and the spray gun. Two-head spray guns may be used for application of two-component high-solids paints. Two-head spray equipment provides mixing the components in atomized state. The resin and the hardener (cross-linking agent) are supplied from different containers by individual pumps preventing clogging the system due to possible early thickening of the paint.
Advantages of high-solids paints as compared to conventional solvent-borne paints:
Low toxicity due to low content of VOC (volatile organic compounds).
Low fire hazard.
Low amount of paint is stored, shipped and sprayed for obtaining a coating of a given thickness and area.
Simpler and less expensive exhausting equipment is required.
Wide range of the coating thickness may be obtained.
Fewer spraying operations is required for building a coating of a given thickness.
Help self-orientation and alignment of metal flakes in automotive metallic paints.
Disadvantages of high-solids paints as compared to conventional solvent-borne paints:
High viscosity causing difficulties in pumping and atomizing.
Limited application methods may be used.
Better Surface preparation is required due to insufficient cleaning effect of low solvent.
Short pot life.
Modification of spraying equipment (heater, high pressure pumps, two-head gun) is required.
Dr. Dmitri Kopeliovich
High-solids paints are the paints containing at least 65% of solid components (binders, pigments and additives) mixed with a solvent serving as a vehicle.
Due to low content of solvent the viscosity of high-solids paints is 3-4 times higher than in conventional Solvent-borne paints and may reach 10000 cP (centipoise).
The viscosity of high-solids paints may be reduced chemical modification or heating the paint before application to 104-150°F (40-66°C).
High-solids paints are formulated as either a single-component or two-component systems:
Two-component high-solids paints start chemical curing (cross-linking) just after the components (resin and cross-linking agent) have been mixed together. The paints have very short pot life when mixed.
Single-component high-solids paints cure by heating (baking) to about 300-400°F (150-200°C).
Air dry single-component high-solids paints cure as a result of chemical reaction with Oxygen or moisture of the surrounding air at normal or slightly elevated temperature.
Polymer resins used as the binders in high-solids paints:
Epoxies
Urethanes
Alkyds
Vinyls
Acrylics
High-solids paints are applied by spray guns.
High pressure pumps are used in the spray equipment for application of high viscosity high-solids paints.
The paint viscosity may be reduced by a heater mounted between the pump and the spray gun. Two-head spray guns may be used for application of two-component high-solids paints. Two-head spray equipment provides mixing the components in atomized state. The resin and the hardener (cross-linking agent) are supplied from different containers by individual pumps preventing clogging the system due to possible early thickening of the paint.
Advantages of high-solids paints as compared to conventional solvent-borne paints:
Low toxicity due to low content of VOC (volatile organic compounds).
Low fire hazard.
Low amount of paint is stored, shipped and sprayed for obtaining a coating of a given thickness and area.
Simpler and less expensive exhausting equipment is required.
Wide range of the coating thickness may be obtained.
Fewer spraying operations is required for building a coating of a given thickness.
Help self-orientation and alignment of metal flakes in automotive metallic paints.
Disadvantages of high-solids paints as compared to conventional solvent-borne paints:
High viscosity causing difficulties in pumping and atomizing.
Limited application methods may be used.
Better Surface preparation is required due to insufficient cleaning effect of low solvent.
Short pot life.
Modification of spraying equipment (heater, high pressure pumps, two-head gun) is required.
Thread
Thread Starter
Forum
Replies
Last Post
EricUSC
Honda / Acura
18
03-08-2006 01:26 PM
