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The Z9010W/G/B 2K Extra Fast Repair Primer Surfacer is a two-component acrylic urethane primer manufactured by Zuotong, formulated for collision repair shops, mobile repair services, and quick refinish centers that require reduced cycle times. It is designed for application over 400#-600# grit sanded steel, body filler, cured epoxy primer, and sanded old paint films. The product is available in white, grey, and black to support different topcoat hiding requirements. It is paired with Z9025H (weight-mix) or Z9025HT (volume-mix) hardeners and ZK103 universal thinners in fast, standard, and slow drying grades.
At 25°C, the primer reaches a dust-free state in 5 minutes and can be wet-sanded for topcoat preparation after 35 minutes. When baked at 60°C, dust-free time drops to 2 minutes and sanding time to 15 minutes. The pot life is approximately 30 minutes at 25°C after mixing, allowing technicians to prepare a measured batch without excessive waste.
The acrylic urethane resin system bonds to steel, body filler, epoxy primer, and cured old paint films that have been sanded with 400#-600# grit paper. The primer acts as an isolation layer between the substrate and the topcoat, reducing the risk of color bleed-through and chemical reaction between dissimilar coating layers.
By weight, the ratio is Z9010 Primer : Z9025H Hardener : ZK103 Thinner = 4:1:1.5-2. By volume, the ratio is Z9010 Primer : Z9025HT Hardener : ZK103 Thinner = 4:1:1.5-2. The thinner range allows adjustment for ambient temperature and humidity. Application uses a gravity-feed spray gun with a 1.5-1.7 mm nozzle at 1.8-2.5 bar air pressure, applied in two coats with a 5-15 minute flash-off between coats at 25°C.
The cured film is formulated for wet sanding with 800#-1000# grit paper. The product is not intended for direct application over stainless steel or galvanized steel; an appropriate epoxy primer or wash primer is required on those substrates first.
White, grey, and black are the three standard shades. Grey is commonly used as a neutral base, white supports light-colored topcoats, and black provides a dark base for solid dark colors and metallic finishes where reduced film build is desired.
Specification Category | Details |
|---|---|
Base Material | Two-component acrylic urethane |
Compatible Substrates | 400#-600# grit sanded steel, old paint films, epoxy primer, body filler (bondo) |
Mixing Ratio (Weight) | Z9010 Primer : Z9025H Hardener : ZK103 Thinner = 4:1:1.5-2 |
Mixing Ratio (Volume) | Z9010 Primer : Z9025HT Hardener : ZK103 Thinner = 4:1:1.5-2 |
Pot Life (25°C) | Approx. 0.5 hours (30 minutes) |
Spray Application | Gravity-feed gun, 1.5-1.7 mm nozzle, 1.8-2.5 bar air pressure |
Coating Method | 2 coats, 5-15 min flash-off at 25°C |
Dust-free Time (25°C) | 5 minutes |
Polishing Time (25°C) | 35 minutes |
Dust-free Time (60°C Baked) | 2 minutes |
Polishing Time (60°C Baked) | 15 minutes |
Post-Cure Sanding | 800#-1000# grit wet sanding recommended |
Unsupported Substrates | Stainless steel, galvanized steel (direct application) |
Drying Condition | Dust-free Time | Polishing Time |
|---|---|---|
Room Temp (25°C) | 5 MIN | 35 MIN |
Baked (60°C) | 2 MIN | 15 MIN |
All substrates must be clean, dry, and free of grease, wax, and loose rust. Steel and old paint surfaces should be sanded with 400#-600# grit abrasive. Body filler should be finished and sanded smooth before primer application. Stainless steel and galvanized steel require a compatible epoxy or wash primer prior to this product.
After the final coat, allow the primer to reach the polishing time at the specified temperature before sanding. Wet sanding with 800#-1000# grit paper is recommended to achieve a smooth surface for topcoating. Inspect for pinholes or surface imperfections before applying the basecoat or topcoat.
The product is packaged in 3.75 L (4 kg) cans, with 4 cans per carton. Unopened containers have a shelf life of 2 years when stored in a cool, dry, well-ventilated area away from direct sunlight and heat sources. The product is intended for professional use only; operators should wear appropriate personal protective equipment and observe fire prevention measures during application and storage.
It is formulated for 400#-600# grit sanded steel, body filler, cured epoxy primer, and sanded old paint films. It should not be applied directly to stainless steel or galvanized steel.
At 25°C, the mixed product has a pot life of approximately 30 minutes. Mix only the amount that can be used within that window.
At 25°C, dust-free time is 5 minutes and sanding time is 35 minutes. When baked at 60°C, dust-free time is 2 minutes and sanding time is 15 minutes.
The shelf life is 2 years in unopened original containers stored in a cool, dry, well-ventilated area. Packaging is 3.75 L (4 kg) cans, 4 cans per carton.
