China Powder Network News Sand texture agents are mostly fluorine-containing resin or wax-based substances. They are mainly in the form of cotton wool or powder. They absorb moisture and are easily agglomerated under pressure. Due to the small amount of cotton-like agglomeration (the amount of cyclopolymerized powder is about 0.1%)

the dispersion in the powder coating is uneven, which causes customers to misunderstand that the amount is too large, and even suspects the purity of the sand texture agent. At the same time, lack of uniform dispersion will also lead to inconsistent gloss in various parts of the coating film or inconsistent gloss between batches. Most customers mix and stir fillers before use and then add them to the powder ingredients.

Substances used with sand texture agents include: organic bentonite, white carbon black, talc powder, polyethylene wax, etc. They work with sand texture agents to adjust the sand particle size, surface gloss, and wear resistance. wait. Organic bentonite can adjust the texture and gloss of the coating film, and the dosage is generally 0.5%. However, adding too much will cause the coating film to be rough.

At the same time, it will be difficult to extrude during the extrusion process, and the resulting flakes will also be too hard to crush. Bentonite is obtained through special treatment, and its own impurities lead to defects such as smoke and odor when added to powder coatings. The addition amounts of silica black, polyethylene wax, etc. are also below 1%.