Waterborne primer for wood rod pencil and preparation method thereof

Abstract

The invention belongs to the field of waterborne paint, and particularly relates to waterborne primer for a wood rod pencil and a preparation method thereof, wherein the primer is prepared from the following ingredients parts by weight: 85 to 100 parts of water-base resin, 3 to 6 parts of coalescents, 1 to 2 parts of wetting agents, 1 to 3 parts of dispersants, 0.2 to 1 part of defoaming agents, 40 to 60 parts of titanium pigment, 30 to 40 parts of talcum powder, 20 to 30 parts of heavy calcium and 4 to 6 parts of thickening agents. The waterborne primer for the wood rod pencil prepared by the preparation method has the advantages that the drying is fast; the attaching force is strong; the shielding power is high; the smoothness is realized in the production line.

Description

technical field [0001] The invention belongs to the field of water-based paint, in particular to a water-based primer for wooden pencils and a preparation method thereof. Background technique [0002] Pencil is an important writing tool in the cultural life of modern people. The most traditional wooden pencil is still the main tool in the fields of sketching, painting, examination, and make-up due to its writing characteristics, and has an irreplaceable position. In order to protect and leave the wooden pencil, it must be painted, and to achieve the ideal painting effect, the primer must be applied first, that is, the white primer is applied on the surface of the wooden rod with a paint machine, and then painted Cloth with colored finish. The purpose of coating the white primer is to cover the texture of the wooden pole surface and the original color of the wood, improve the smoothness of the surface, and facilitate the smoothness, gloss and color of the colored topcoat. ...

AI Technical Summary

Problems solved by technology

[0003] Most of the traditional solvent-based pencil paints are nitro paints, and there are a lot of organic solvents. These compounds will seriously endanger our natural environment and health during production and use; the most obvious feature of organic solvents is their strong Irritant odor, these irritating odors will seriously irritate the eye mucous membranes, nasal mucous membranes, respiratory tract mucous membranes and cause skin allergies; a certain amount of plasticizer will be added to nitro pencil paint, which seriously interferes with endocrine; nitro pencil paint usually has a solid content of If it is low, it must reach a certain viscosity during construction and needs to be applied several times, and the low solid content will also lead to low fullness of the paint film, which will affect the hardness; nitro pencil paint has high requirements on the humidity during construction, and the surface of the coating The moisture content must be lower than 12%, and the high humidity weather during production is not conducive to construction, and the prepared slurry cannot be exposed to high-humidity air for a long time, as it is very easy to absorb water and solidify and cannot be reused, resulting in slurry Material waste; when the humidity is high, the water vapor in the air or on the substrate will condense into dew on the coating film, resulting in whitening and greatly reducing the yield; the film-forming substance in nitro paint is nitrocellulose, nitrocellulose Cotton cellulose is degreased from cotton fiber with strong acid, so nitrocellulose cellulose will introduce free acid into the nitro paint, and free acid will cause the decomposition of cellulose resin, further leading to loss of gloss, discoloration, and pulverization of the paint film Even cracking, resulting in low-quality nitro-lacquer finished products; at the same time, the storage and transportation conditions of nitro-lacquer are extremely harsh, can not be exposed to rain, moisture will cure and deteriorate; can not be exposed to sunlight, can not be collided, it is easy to cause organic solvent explosion; choose high anti-corrosion Packing materials, stored in a cool and ventilated place, isolated from fire sources, away from heat sources

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