Semitransparent walnut-color calcined Umber odorless polyurethane wood lacquer and preparation method thereof

Abstract

The invention relates to a semitransparent walnut-color calcined Umber odorless polyurethane wood lacquer and a preparation method thereof. The polyurethane wood lacquer is composed of a component A and a component B, wherein a weight ratio of the component A to the component B is 1: 0.5, the component A comprises odorless alkyd resin, matting silica, dispersant, walnut-color color paste, a leveling agent, an antifoaming agent, an anti-settling agent and a solvent, and the component B is a benzene-free curing agent mainly comprising TDI, HDI trimer or an addition product. The prepared semitransparent walnut-color calcined Umber odorless polyurethane wood lacquer does not contain aromatic hydrocarbon, aldehyde ketone and heavy metals, achieves odorless effect in 48 h after coating and film formation and has the advantages of no deposition during storage, good levelability, good hand feeling, high scratch resistance and no ghosting phenomenon; when woodenware is coated with the polyurethane wood lacquer, the woodenware has clear and penetrating wood grains, appears to be elegant, noble, plain and natural, endows people with the feelings of elegance and comfortableness, adapts to modern aesthetic views and is favored by the market and popular among customers; and the polyurethane wood lacquer is extensively applied to surface decoration and protection of woodenware, metals, plastics, etc.

Description

Technical field [0001] The invention relates to a preparation method of a two-component polyurethane wood lacquer, in particular to a semi-transparent walnut color calcined ambassador-type anti-scratch two-component polyurethane wood topcoat. Background technique [0002] With the improvement of people's material and cultural living standards, consumers have higher and higher requirements for the coating effect of furniture, which has driven the rapid growth of domestic wood coatings. In the furniture coating market, American-style painted furniture occupies a large market share. Most of the domestic furniture industry uses color concentrates (a metal complex dye, such as heavy metals exceeding the standard, containing pathogenic substances, temperature resistance, It has poor lightfastness and migration resistance, commonly known as Grace) for wood-grain rubbing and varnishing. The resin used for rubbing is mostly ordinary alkyd resin and linseed oil. The furniture will still be...

AI Technical Summary

Problems solved by technology

In the furniture coating market, American-style painted furniture occupies a relatively large market share. Most of the domestic furniture industry uses color essence (a metal complex dye, such dyes have serious problems such as heavy metals exceeding the standard, containing pathogenic substances, temperature resistance, Poor light fastness and migration resistance, commonly known as Grace) for wood grain wiping and varnishing colorants, most of the resins used for wiping are ordinary alkyd resins and linseed oils, and the furniture still remains for a long time after painting. Odor; today's huge wood paint market has higher and higher requirements for paint products. Especially wood polyurethane (PU) paint has excellent comprehensive performance and is widely used by consumers, but there are many shortcomings in the product, such as whitening and blistering , delamination, non-scratch resistance, ghosting, fingerprints are not easy to disappear, etc.