High-build nanometer unsaturated polyester wood coating and preparation method thereof

Abstract

The invention belongs to the field of nanometer materials, and specifically provides a high-build nanometer unsaturated polyester wood coating and a preparation method thereof. The coating comprises the following components in parts by weight: 100 parts of unsaturated polyester resin, 15 to 20 parts of a nanocomposite mother liquor, 0.5 to 1.0 part of a composite corrosion inhibitor, 6 to 8 partsof an organic corrosion inhibitor, 1 to 3 parts of a flame-retardant filling material, 3 to 5 parts of an initiator, 2 to 4 parts of a promoter and 5 to 10 parts of an organic solvent. The preparationmethod comprises the following steps: weighing the unsaturated polyester resin, the nanocomposite mother liquor, the composite corrosion inhibitor, the organic corrosion inhibitor, the flame-retardant filling material, the initiator, the promoter and the organic solvent, carrying out mixing in proportion, and carrying out dispersion and grinding until the particle size of an obtained material is100 nm or below so as to prepare the high-build nanometer unsaturated polyester wood coating. The coating provided by the invention has rapid drying speed and high strength and toughness, exerts a shielding effect to electromagnetic wave, is insusceptible to aging, and has a function of flame retardation.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a thick-build nanometer unsaturated polyester wood coating and a preparation method thereof. Background technique [0002] Wood products include solid wood and wood-based panels (plywood, medium density fiberboard and particle board). Coatings used for supplies, stationery, toys, etc. are mainly furniture coatings. Wood coatings are divided into two categories according to the wood manufacturing process, plate pre-coating and finished wood coating coatings, and are divided into solvent-based coatings, water-based coatings and solvent-free coatings according to coating types. [0003] Unsaturated polyester wood lacquer is a solvent-free varnish. The unsaturated polyester resin obtained through thermal polycondensation reaction of dibasic acid and diol with unsaturated bonds as the film-forming material is used as a film-forming substance. Under the action of energy, it polymer...

AI Technical Summary

Problems solved by technology

At room temperature, the final hardness cannot be reached within many days, and the products are easy to stick when stacked, which cannot meet the requirements of industrial high-quality and high-efficiency coating

The heat of evaporation of water is high, and in high and low temperature environments, the drying of water-based coatings is slower, and it is particularly prone to construction problems such as whitening, cracking, mirror frames, and uneven gloss; (2) general-purpose unsaturated paint Polyester resin itself has poor mechanical properties, low strength, and poor toughness; it is easy to crack after curing, and has no shielding effect on electromagnetic waves, and is easy to age under ultraviolet light

Although existing toughening modification methods improve the toughness of unsaturated polyester resin to a certain extent, they damage other excellent properties of the resin, such as: reducing the strength and wear resistance of the resin.

(3) poor flame retardant effect

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