Introduction to Powder Coatings

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Powder coatings are completely different from general coatings and are present in the form of fine powders. Since no solvent is used, it is called a powder coating. The main features of powder coatings are: pollution-free, high efficiency and resource saving.

Powder coating is a new, solvent-free, 100% solid powder coating. It has the characteristics of no solvent, no pollution, energy and resource saving, labor intensity reduction and high mechanical strength of coating film.

It has two broad categories: thermoplastic powder coatings and thermosetting powder coatings.

Thermoplastic powder coatings are composed of thermoplastic resins, pigments, fillers, plasticizers and stabilizers. Thermoplastic powder coatings include: polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester.

Thermosetting powder coatings are composed of thermosetting resins, curing agents, pigments, fillers and auxiliaries. The thermosetting powder coating includes an epoxy resin, a polyester resin, and an acrylic resin.

Disadvantages: The powder on the corners is not uniform, the film defects are difficult to cover after curing, and the curing conditions are high.

There are many classification standards, and the names of various types of powders on the market are uneven. According to the properties of film-forming materials, they are divided into two categories: thermoplastic powder coatings and thermosetting powder coatings. Or the appearance of the film-forming substance is divided into: matt type, high-gloss type, art type, and the like. Can also be divided into two categories according to the use environment: indoor and outdoor.

Wood Working Dril

The three-point wood drill is a variant of the twist drill, because the conventional twist drill is easy to deviate when drilling on a flat processing surface. When drilling metal, a pilot hole is usually drilled to locate the Drill Bit. But when doing woodworking, we can have a more convenient choice. The straight tip of the three-point woodworking drill is nailed into the wood like an awl to ensure that the drill will not slip.

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