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Micronisation method: Micronisation can be done by using jet microniser or microniser/classifier production process, i.e. by using coarse wax in high-speed state after intense collision with each other and gradually broken into particles, and then by centrifugal centrifugal force, and then blown out under the weightlessness to collect and get. This is currently the more widely used manufacturing method.
1. Melting method: the solvent is heated and melted in a closed, high-pressure container, and then discharged under appropriate cooling conditions to obtain finished products; the disadvantage is that the quality is not easy to control, the operating cost is high and dangerous, while some waxes are not suitable for this method.
2. Emulsification method: fine and round particles can be obtained, suitable for water-based systems, but the surfactant added will affect the water resistance of the coating film.
3. Dispersion method: the wax is added into the tree wax/solution and dispersed by using ball mill, roller or other dispersing equipment; the disadvantage is that it is difficult to obtain high quality products and the cost is high.
4. micronisation method: micronisation can be used in the form of jet microniser or microniser/classifier production process, i.e. the use of coarse wax in the high-speed state of intense collision with each other after the gradual fragmentation into particles, and then by the centrifugal centrifugal force, under weightlessness, was blown out of the collection and obtained. This is currently the most widely used manufacturing method. Although there are many ways to use polyethylene wax, but still to micronised wax is more, and there are many kinds of micronised wax on the market, and the production process of each manufacturer is also different, so that the particle size distribution of micronised wax, relative molecular mass, density, melting point, hardness, and other properties of the plant are somewhat different. The manufacture of polyethylene waxes generally involves high-pressure and low-pressure polymerisation; the high-pressure method produces polyethylene waxes with branched chains and lower density and melting temperature, while the low-pressure method produces straight-chain waxes with low specific gravity; polyethylene waxes come in a variety of densities; for example, in the case of the same low-pressure method of producing non-polar PE waxes, the low-density ones (with low-branched chains and high degree of crystallinity) are usually harder, with better abrasion resistance and resistance to trauma, but with lower slippery properties and lower coefficient of friction. However, they are slightly less slippery and have a lower coefficient of friction.
Polymer wax has developed into a new class of functional materials, the functionalisation of organic polymer micropowder is also becoming a research hotspot, and the preparation, application and in-depth development of polymer micropowder will surely open up more new properties and applications, forming a new field of functional polymers and smart materials. The excellent performance of polymer wax provides good physicochemical properties for new product development, and more series of waxes will be released to meet the requirements of various fields such as inks, coatings and finishing agents. China's polymer wax industry will also go to the world.
