Storable low temperature cured powder coating and preparation method thereof

Abstract

The invention discloses a storable low temperature cured powder coating and a preparation method thereof. The powder coating mainly comprises 30 to 40 percent of epoxy resin, 19 to 29 percent of modified polyester resin, 0.5 to 1.2 percent of acrylic acid, 0.08 to 0.15 percent of phosphite ester, 20 to 38 percent of pigment and filler, 0.2 to 3 percent of W-187 low temperature curing agent, and 0.15 to 0.6 percent of curing accelerator. The method for preparing the powder coating comprises the following steps: mixing, heating, melting, extruding, tabletting, cooling, crushing, ACM-crushing and sieving all the raw materials to achieve the fineness of 180 meshes, and packing a finished product. The storage time of the powder coating is greatly prolonged, and the curing temperature is reduced; the powder coating has excellent performance, and is widely applied to surface coating and painting of hardware, electric appliances, home appliances, automobiles, furniture, mechanical equipment and the like; the energy is reduced and the using cost is reduced, so the production cost of enterprises is reduced; and the method ensures the large-scale production of the enterprises, and increases the economic benefits of the enterprises.

Description

Technical field [0001] The invention belongs to the technical field of surface coating and coating, in particular, the invention relates to a low-temperature curing powder coating and a preparation method thereof. Background technique [0002] In the prior art, powder coatings have long been poorly cured at primary low temperature, and the usual storage period is more than one month. During storage and long-distance transportation, powder coatings are prone to agglomeration and cannot be used, so that the production costs of enterprises remain high. , It brings great obstacles to the large-scale production of enterprises, and has a serious impact on the economic benefits of enterprises. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a storage-resistant low-temperature curing powder coating with long storage period, low curing temperature and excellent performance ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, powder coatings have long been poorly cured at primary low temperature, and the usual storage period is more than one month. During storage and long-distance transportation, powder coatings are prone to agglomeration and cannot be used, so that the production costs of enterprises remain high. , which brings great obstacles to the large-scale production of enterprises and has a serious impact on the economic benefits of enterprises