Product characteristics and application of fluff powder

Fluff powder (elastic powder) refers to a powder composed of a special silicone resin modified by acrylic acid, polyurethane, colored or non-colored elastic hollow microspheres, and the single diameter is between 10 and 100 um.

1. Product characteristics:

1. The surface treated fluff powder is evenly dispersed and will not fly and pollute the scene.

2. It has excellent resistance to solvent and heat.

3. With a variety of colors to choose from, you can call out different colors.

4. This product is free of toxic, heavy metals and volatile substances.

5. Made of paint, the film can get a soft and delicate feeling.

6. Excellent dispersibility, can be directly dispersed using a mixer and a mixer.

7. Can be supplied with 8μ-100μ diameter fluff powder according to customer requirements.

8. The effect of matting. Compared with inorganic matting powder, the fluff powder has better bonding with the coating and good scratch resistance.

2、specification:

3、Reference formula

The viscosity of the coating should be increased to prevent sagging. Absorbing materials such as coated cardboard, the viscosity can be adjusted to be less. Process requirements: firstly use 60% of the total amount of solvent to pour into the whole powder, stir into a paste, then add the remaining 40% of the solvent, then stir and disperse another different substrate at high speed, the spraying conditions should also be corresponding Change, such as spraying a non-absorbent plastic surface,

4, product application

The amount of fluff powder added varies depending on the application and has a different amount. For example, the leather surface treatment is added by about 10-20%, while the plastic surface is added by about 25-35%, while the surface treatment (generally referred to as PU leather) is added by 5-8%.

The general purpose of the fluff powder is to increase its added value. The fine particle size (7um) is dense to the touch, and most of it is used in high-priced products such as lipsticks, computer casings, etc. The medium-sized (15um) touch is slightly thicker, mostly Used on leather or PU leather surfaces, and some car interiors. The large particle size (30um) is rough and has a customer's use on the sole or tennis racket grip.

5. Possible problems and countermeasures

1. Irresistible

   a. The coating film is too hard: use elastic resin instead, reduce the amount of curing agent

   b. The coating film is too soft: the curing agent is not used in a large amount, or the curing agent is improperly stored or the main solvent is volatilized to cause the coating film to be incompletely cured.

2. Dry cracking:

   a. Thinner to form a dry spray, which can be diluted to the desired spray viscosity.

   b. Solvent evaporation is too fast, should increase the amount of high boiling solvent, such as the amount of ethylene glycol ethyl ether acetate or use propylene glycol ether acetate or increase the proportion of cyclohexanone in the diluent ratio.

   c. After spraying, it should be dried before being placed in an oven.

   d. Spraying too thick, should control the film after dry film is 30.40um

   e. The proportion of fluff powder and resin is too large, reducing the amount of fluff powder

3. rough surface

   a. The wool powder is completely dispersed. Increase dispersion time and improve dispersion.

   b. A small amount of coarse and undispersed particles should be removed by filtration.

   c. The amount of fluff powder is too large, adjust the dosage

   d. too little solvent, forming a thousand spray, should be diluted to the appropriate viscosity

   e. Drying speed is too fast, should be placed on the surface and then placed in an oven or completely dry, the surface is fine.

4. Surface hair

   a. The fluff powder is seriously dispersed

   b. uneven spraying

   c. insufficient viscosity, increase the amount of thickener

5. No velvet

   a. The proportion of fluff powder and resin is not enough, increase the amount of fluff powder

   b. The coating film is too thick and the solvent evaporates too slowly.