2016年6月30日星期四

Application of micronized wax in the coating


It will generate a small amount of low polymer and low molecular weight polyethylene in the production polyethylene, it is known as polymer wax or polyethylene wax. It is widely used because of its hardiness, heat resistance, chemical resistance and wear resistance. This part of wax as an additive can be added directly to polyolefin processing in normal production, it can increase the product optical and process performance.

Polymer wax can be used as dispersion lubricants of plastics and pigments, hot-melt adhesives and wax, auto detailing wax, etc. Polymer wax is a nontoxic, and tasteless, and no corrosion, and white or slightly micro-yellow of solid, relative molecular quality for 1800-8000. It has good chemical stability.

Paint wax mainly added in the form of additives, wax additives exist in aqueous emulsion form. Mainly it improves smoothing and scratch resistance of coating, and water resistance. Besides, it can also affect the rheological property of coating. It can be used as a matting agent in Matt lacquer, according to the grain size and grain size distribution, wax additives extinction effect also varies. Micro-crystallization of modified polyethylene wax can be used for improving surface properties of water-borne industrial coatings. Polyethylene waxes for coatings can be made high gloss solvent paints waterborne coatings, powder coating.

Micronized wax is widely applied to printing ink, paint, and coating, it has became an essential important accessories in paint and ink production. Most micronized waxes are made through the micronization process, but some are micro-powder production of amide waxes, microcrystalline wax, natural waxes. The molecular weight of polyethylene wax is about 1000-5000, and its melting point is 100-120 ℃. It has excellent resistance to friction, scratch, anti-adhesion and gloss. Wide branched-chain structure and better wear resistance. But the properties of high density and low density polyethylene micronized wax are different.

The functions of micronized wax in the coating films are as follows:
1. waxes in distribution of the film to protect coating film from scratching, abrasion and provides abrasion resistance, such as container coatings, wood coatings, decorative paints require this feature.
2. its low coefficient of friction provides excellent coating of slipperiness.
3. because of the stability of wax gives the film better resistance to water, salt spray, etc.
4. it prevent laminating
5. choosing the right wax, it has different matting effect depend on different amount
6. prevent silica induration deposition and increase the coating stability in storage.
7. antiMetalMarking, especially in the printed cans of paint, in addition to offering good processing properties, it can also serve to protect the printed tank storage stability. Click here to get more!

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