Wrinkle pattern powder coating is a kind of fine art powder coating that uses wrinkle powder to add pigments to make its surface have line patterns. It has strong decorative properties and can cover up the defects of the substrate itself, and it is not easy to appear shrinkage on the surface. It has no high requirements and is widely used in doors and windows, steel and wood furniture, sewing machines, instruments, small electromechanical enclosures, and other fields. Most of the wrinkle pattern powder coatings are made of polyester-epoxy system, which has good anti-corrosion performance and poor aging performance. When the QUVB accelerated aging box is used for the aging test, the phenomenon of loss of gloss and chalking appears after 50 hours. , Can only be used indoors.
However, it takes 250-300 hours to use polyester-TGIC wrinkle pattern powder to show serious loss of gloss and chalking, and it can be used outdoors. This article mainly discusses the influence of factors such as the type of polyester resin, the type of filler, the ratio of polyester resin to pigment and filler, the amount of curing accelerator, and the amount of wrinkle agent in the polyester-TGIC system on its powder and coating film.
