1K Fast Primer BF9950

Product Features

This product is a single-component, self-drying, fast-drying primer that offers good adhesion to general metal substrates or over and undercoatings. It dries quickly, is easy to sand, and has good workability, making it particularly suitable for the base coating of small-area quick repairs on various types of vehicles.

Product Mixing Rates

BF9950 1K Fast Primer 1
BF6670 Thinner 0.8±20%

Instruction

  • Before use, mix thoroughly according to the ratio, adjust viscosity to 16-18 seconds/4 cups at 25°C, spray 2 coats, with a film thickness of 25-45μm.

  • Air dry for 30 minutes at 25°C

  • The usable time after mixing the paint is 6 hours at 25°C.

Cautions

  1. It is not advisable to apply too thick a coat at once; each layer requires a certain flash-off time.
  2. To ensure the best spraying results, please use the corresponding  thinner.
  3. The coating must be completely dry before sanding, otherwise issues like sandpaper sticking or sanding marks may occur.
  4. Avoid scraping putty over the coating of this product whenever possible.

Technical Data

Inspection items Technical indicators Inspection method
Material Status in Containers Easy to stir evenly without foreign matter GB/T 3186
Fineness, μm ≤30 GB/T 1724
Viscosity, Coated-4 cup,25°C,s 1000~5000 GB/T 1723
Solids content (120°C, 2h)% ≥50 GB/T 1725
Storage Stability, Grade Precipitability ≥ 8 grade and crusting ≥ 10 grade GB/T 6753.3
Viscosity, Coated – 4 cup, 25°C, s 16-18 GB/T 1723
Dryness Surface Drying , 25°C ≤10mins GB/T 1728
Completely dry, 25°C ≤30 mins
Hardness, pencil hardness tester ≥H GB/T 6739
Adhesion, Grid method, Grade ≤1 GB/T 9286
Adhesion between layers Great
Flexibility,mm 1 GB/T 1731
Impact strength,cm 50 GB./T 1732
Grindability(20 times) Easy sanding, non-stick sandpaper GB/T 1770
Waterproof,240h Non-foaming, non-wrinkling, non-falling GB/T 5209
Nitrogen resistance No biting, no bleeding GB/T 13493.4.18
Damp heat resistance(120h),Grade ≤1 GB/T 1740
Acid resistance(0.05mol/1 H2SO4),24h No foaming, no peeling, slight discoloration allowed GB/T 9274
Alkali resistance (0.1 mol/1 Na0H),24h No foaming, no peeling, slight discoloration allowed GB/T 9274
Salt Spray Resistance Series A (240h),

Series B (168h), Grade

 ≤1 GB/T 1771

Package and Storage

The standard  packing: 4kg or 20kg.

The product shelf life is 1 year at 25°C. Expired products can be used if tested, at your own risk.