doris@pj.com.cn (510)3259832
A two-component pure epoxy primer Excellent adhesion to General substrates Excellent anti-corrosion for various metal substrates and glass fiber reinforced plastics. A good protective coating for various vehicles, machinery and equipment
Product name: 2K Intermediate Coat
Product Numbers: BF9920
Standard packaging: 4KG/20KG
Product Features:
A two-component pure epoxy primer
Excellent adhesion to General substrates
Excellent anti-corrosion for various metal substrates and glass fiber reinforced plastics.
A good protective coating for various vehicles, machinery and equipment.
Complementary products and mix ratio
|
BF9920 2K intermediate coat |
4 |
|
BF7750 4:1 2K middle coat /primer curing agent |
1 |
|
BF6660 Epoxy Primer Thinner |
1.8±20% |
Instructions：
① Mix thoroughly according to the proportion before use, adjust the mixture’s viscosity to 16-18 seconds/4 cups, spray 2 times at 25°C, with the film thickness reaching 35-55μm.
②Flash dry for 10-15min
Bake at 70-80°C for 45min
Air dry at 25°C for 24h
③After being mixed, the paint should be stored at 25°C and used within 6 hours.
Things to note：
①The primer should not be excessively thick each time. Let the layer dry for 5-10 minutes before applying the next layer.
②Use the complementary curing agent and thinner to achieve the desire results.
③The paint layer must be completely dried before sanding, or it may stick to the sandpaper or produce sand marks.
Technical indicators
|
Inspection items |
Technical indicators |
Inspection method |
|
|
Material Status in Containers |
Easy to stir evenly without foreign matter |
GB/T 3186 |
|
|
Fineness, μm |
≤25 |
GB/T 1724 |
|
|
Viscosity, 25°C,CPS |
≥80 |
GB/T 1725 |
|
|
Solids content (120°C, 2h)% |
≥60 |
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 trunk , 25°C |
≤30min |
GB/T 1728 |
|
Hard work, 25°C |
≤24h |
||
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Drying, 70-80°C |
≤45min |
||
|
Hardness, pencil hardness tester |
≥H |
GB/T 6739 |
|
|
Adhesion, Grid method, Grade |
≤1 |
GB/T 9286 |
|
|
Compatibility with silver powder paint and vamish |
Good adhesion between layers |
|
|
|
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 (120h), Series B (72h), Grade |
≤1 |
GB/T 1771 |
|
Storage：
The product shelf life is 1 year at 25°C. Expired products can be used if tested, at your own risk.
Automotive Painting Technology: The Combination
Complete guide for changing the color of car pai
With the rapid development of the automotive ind
Contact: Miss Doris
Phone: 001-5103259832
Tel: (510)3259832
Email: doris@pj.com.cn
Add: No.18, Duruan North 2nd Road, Jiangmen , Guangdong
