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Recommendation of resin for wood coatings

2016-3-24 Read:1

Recommendation of resin for wood coatings
Advantages
1.It dries rapidly 2.The construction is simple 3.Its gloss is stable and unlikely to be influenced by environment
Disadvantages
1.It doesn’t have adequate richness 2.It doesn’t have adequate hardness, and generally is of HB grade. 3.It doesn’t have solvent resistance剂
Typical Technologies
1.NC bottom, NC surface 2.PU bottom, NC surface
Construction Methods
1.Roller painting 2.Dipcoating 3.Spraying (manual spraying, electrostatic spraying, etc.)
For wood coatings, recommendations are 3139, 3670, 3370D, 3370C and 2050, etc., satisfying demands of different varieties of paints
Common Problems during Application
Basically, all short oil alkyd resin and thermoplastic acrylic resin can be applied for nitro-lacquer; only that there will be difference in gloss, tenacity and other performances when being applied as undercoat, lusterless paint and varnish due to intrinsic difference in solvent, compatibility and viscosity. Brushing or blushing during spraying and brush painting can be solved by adjusting the solvent
Referential Formula of NC Semi-matt Varnish

Raw Materials

1/2NC

3670

4250

Anti-settling Agent

Matting Powder

Flatting Agent

Defoaming Agent

Mixed Solvent

Proportioning

20

20

10

0.5

1

0.3

0.1

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