Super-levelling low-temperature curing powder coating for MDF

Abstract

The invention belongs to the field of functional powder coatings, and particularly relates to a super-levelling low-temperature curing powder coating for an MDF. The powder coating is prepared from the following raw materials in percentage by weight: 20%-40% of epoxy resin, 10%-50% of polyester resin, 1%-10% of acrylic resin, 0-9% of a chemical flatting agent, 1%-5% of modified epoxy resin, 0.2%-0.6% of an adhesion promoter, 2.2%-6.6% of a curing agent, 0.1%-0.5% of a curing accelerator, 1%-3% of a flatting agent, 0.1%-0.6% of a gloss enhancer, 0.1%-0.5% of a surface conditioning agent, 0.3%-0.6% of benzoin, 0.2%-0.8% of a degassing agent, 0.3%-0.7% of an antioxidant, and 10%-20% of filler and pigment. According to the super-levelling low-temperature curing powder coating, the glossiness is adjusted by adjusting the amount of acrylic resin and the chemical flatting agent; highlight, matt and flat coats can be prepared; and the super-levelling low-temperature curing powder coating has the advantages of excellent levelling property, good adhesive force and low curing temperature.

Description

technical field [0001] The invention belongs to the field of functional powder coatings, in particular to a super-leveling low-temperature curing powder coating for MDF. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating. With the advantages of environmental protection, no pollution, high efficiency and energy saving, simple process, durable coating, etc., it is being widely used in various fields all over the world, and is growing at a rate of more than ten percent every year. Powder coatings have occupied a very important position in the coatings industry. [0003] MDF board is medium density fiberboard, which has good physical and mechanical properties and processing performance, and can be made into boards of different thicknesses. It is widely used in furniture manufacturing, construction, interior decoration, etc. The existing spraying process of MDF boards is paint spraying and powder spraying, but with the national ...

AI Technical Summary

Problems solved by technology

Due to the low thermal conductivity of MDF itself, due to the slow heat absorption during the curing process, problems such as poor leveling often occur

Images