Beaded paint and coating preparation method thereof

Abstract

The invention discloses beaded paint and a coating preparation method thereof. The paint comprises a gloss oil material and a beaded material which are cured in sequence, wherein the surface tension of a gloss oil material coating is smaller than that of a beaded material coating. The gloss oil material is prepared from, by weight, 58-68 parts of alkyd resin, 8-11 parts of butyl-etherified melamine formaldehyde resin, 3-6 parts of phenyl melamine formaldehyde resin, 2-4 parts of polyisocyanate, 0.8-1 part of a leveling agent, 0.4-0.7 part of a sealed acidic environment-friendly drier, 2-3 parts of wax paste, 16-18 parts of an environment-friendly solvent and 1.7-2.7 parts of organosilicon modified resin. The beaded material is prepared from, by weight, 60-66 parts of high-molecular-weightsaturated polyester resin, 15-18 parts of methyl etherified melamine formaldehyde resin, 8-10 parts of sealed polyisocyanate, 0.3-0.5 part of a sealed acidic environment-friendly drier, 0.4-0.5 part of wax powder, 1-3 parts of an adhesion promoter and 7-9 parts of a quick-drying solvent. According to the method, a mellow beaded effect can be achieved by adjusting the surface tension of the two coatings, unique visual and tactile effects are achieved, and the beaded paint is resistant to stamping, strong in adhesive force and high in processability.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a beaded coating and a coating preparation method thereof. Background technique [0002] Art paint, also known as art paint, is a paint variety with special effects composed of special materials. Applying this paint on the surface of an object will protect the object. The difference is that after the paint is formed into a film, the film will form Or various beautiful patterns or patterns appear, the appearance is colorful, distinct, beautiful and generous, and has obvious high decorativeness. At present, there are art paints with effects such as cracks, wrinkles, crystal lines, orange lines, and pearlescent effects on the market, which have been widely used on the surfaces of aluminum alloy or steel structures such as machine tools, equipment, instruments, electric tools, and safes. However, it is popularized and used in high-efficiency and large-scale plate printing industrie...

AI Technical Summary

Problems solved by technology

However, its application effect is difficult to form a round and beautiful beaded layer. Figure 4 As shown, the bead shape presented is not obvious enough, and the complete bead shape is not formed. The cobalt and manganese used are not environmentally friendly and advanced. The ink layer with high concentration alkyd resin ratio, high molecular polyester The surface tension between the varnish layers of the resin cannot form a large surface tension difference, resulting in poor beading effect in coating applications, because the surface tension of the metal is large, and the polyester resin in the varnish material is crosslinked with isocyanate. The polyurethane urea-based structure is well combined with the metal surface. The varnish material on the metal substrate cannot form a certain contact angle to shrink, and the bottom layer and the surface of the metal substrate cannot form a good shrinkage bead. When the varnish is spread on After coating on the metal substrate, the ink material with lower surface tension is coated on the surface of the varnish layer. The alkyd resin itself used in the ink material has a relatively low surface tension. Since the surface tension of the ink material is lower than that of the metal substrate, the adhesion Small, so that the ink layer on the surface is difficult to form a complete bead point on the surface of the varnish

Using initiators and solvents with different boiling points to affect the surface tension of varnish materials and ink materials, it is difficult to quickly and uniformly control the change of surface tension due to the presence of initiators, solvent consumption and small dosage

[0004] At present, the main reasons restricting the use of beaded coatings in the field of spraying and printing iron cans include: 1. The surface tension of material coatings in the field of spraying and printing iron cans is different, and the effect of beaded coatings is difficult to control, and it is impossible to form a better coating. Beaded pattern; 2. In order to achieve the beaded effect, the existing techniques such as sprinkling dots are used to greatly reduce the surface tension of the substrate, so that the beaded coating can achieve the effect people want, but because the surface tension of the substrate is too low , beaded coatings are prone to defects such as poor adhesion and poor processability; 3. The existing beaded coating formulations include bead point initiators, hammering agents containing silicone oil, etc., which are likely to cause damage to the environment and equipment during use. Pollution

Therefore, beaded coatings have been unable to be used on a large scale

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