Transparent primer dipped with unsaturated polyester and preparation method thereof

Abstract

The invention discloses a transparent primer dipped with unsaturated polyester. The transparent primer is composed of the following components at a weight ratio: primary paint: a diluent: an initiator: an accelerator=100:150:(1-2):(1.2-2.5); the primary paint is composed of the following components: 70-80% of unsaturated polyester resin, 5% of epoxy acrylic resin, 0.3-0.5% of a defoamer, 0.3-0.5% of a dispersant, 0.5-0.8% of an anti-settling agent, 0.2-0.4% of a flatting agent, 0.1-0.3% of a polymerization inhibitor, 4-6% of a polishing agent and 7-18% of an active solvent. The unsaturated polyester resin is allyl ether modified unsaturated polyester resin, the solid content of which is 72-78% and the viscosity of which is 2000-3000mpa.s; the active solvent is a mixture of styrene and a polyester transparent primer; and the diluent is composed of acetic ether, styrene, methylbenzene and acetone. The transparent primer dipped with unsaturated polyester disclosed by the invention has relatively good defoaming property and sag prevention, and is strong in seepage force, excellent in fillibility, and the sealing effect is obviously superior to that of a PU sealing primer in the market, so that the problem that the film collapses is effectively solved. The transparent primer for firstly dipping woodware is labor-saving and material-saving, energy-saving and environment-friendly, high in construction efficiency and suitable for flow line production.

Description

technical field [0001] The invention relates to a decorative paint, in particular to a dip-coating unsaturated polyester transparent primer and a preparation method thereof. Background technique [0002] General furniture factories mostly use poor texture, loose and soft porous substrates such as medium density fiberboard, artificial veneer boards and solid wood panels to produce furniture due to cost reasons. During the coating process, it is easy to have pinholes, collapse and other disadvantages, which seriously affect the coating effect. At present, furniture factories usually use spraying or brushing PU sealing primer to block the outward diffusion of moisture and volatile substances in the wood, slow down the deformation of wood due to moisture absorption, fill the tube holes of the substrate, and apply the primer after drying and polishing. Pack. However, the solid content of the PU sealing primer is low. After construction, the surface of the board is dry and there...

AI Technical Summary

Problems solved by technology

However, it is easy to produce air bubbles and pinholes in the process of dip coating, which will affect the sealing effect. This shortcoming limits its application.

The related patent CN105623493.A discloses a double-curing unsaturated polyester white primer and its preparation method, but it only discloses the construction by spraying method, and there is no explanation on whether it is applicable to the construction by dip coating