Methods for Identifying the Quality of Powder Coatings

Appearance after baking: the appearance of good powder coating after spraying is delicate, full, transparent, and strong sense of plane. The appearance of the product after poor powder spraying is dim, rigid, foggy, impervious, and poor in plane sense, which affects the appearance of the product. The product with good glossiness has good glossiness and can stick to relative glossiness for a long time. The effect of poor powder glossiness is good when it is baked, and it will start to shine after a few months.

2. Adhesion and aging identification of powder coatings:
The powder coatings with good adhesion and aging have strong adhesion and toughness, and can persist in non pulverization and aging for several years. The powder coatings with poor adhesion and brittleness begin to age and pulverize after spraying for 3 months to half a year. The adhesion and bending of the products are comparatively tested, and the products with aging, pulverization, poor adhesion and aging are observed after several months. The sprayed products are easy to age, pulverize and rust.

3. High temperature identification of powder coatings:
High temperature, adjust the temperature to 220-230 degrees, heat preservation for 10-15 minutes, good powder coating has better temperature resistance and weather resistance, after high temperature baking, the color change is small, the gloss change is not big. Poor powder coating has poor temperature resistance and weather resistance, after high temperature baking, the color change is serious, the gloss becomes dumb. This method is especially effective for detecting outdoor light color powder, Poor pigments and fillers, poor temperature and weather resistance. Low cost, shoddy

The powder coating baking products produced by milestone Industrial Co. Ltd. have fine appearance, full, transparent, strong sense of plane, long service life, high temperature resistance and stable performance, which are highly praised by the majority of users.