Preparation method of self-adhesive acrylic acid paint for coating

Abstract

The present invention relates to a self-adhesive acrylic acid paint for coating, and a preparation method thereof. The self-adhesive acrylic acid paint is prepared from the following raw materials, 0.6-2% of a functional monomer, 8-11% of a hard monomer, 8-10% of a soft monomer, 0.1-0.8% of an emulsifier, 0.1-0.3% of a dispersing agent, 0.05-0.25% of an antifoaming agent, 0.015-0.2% of an oxidation-type initiator, 0.001-0.02% of a reduction-type initiator, 0.02-0.15% of an electrolyte, 1-5% of ammonia water and 72-82% of deionized water. The method comprises: adding the monomers, the initiators, the emulsifier, the dispersing agent and other components to a reactor; carrying out a polymerization reaction to a certain extent; continuously adding the remaining monomers, the initiators and other raw materials to the reactor in a certain time interval until the reaction is completed. According to the present invention, the paint can be directly coated on the substrate without the base coating; the case of the coating falling is not generated after the coating is cured; the peeling strength of the compounded coating is not affected after performing the next printing compounding process; the paint has high transparency and high glossiness after the paint forms the film; the method has characteristics of low production cost, safety and environmental protection; the primer precoating process in the traditional coating process is reduced so as to substantially save the cost, and provide the pollution-free production for the coating environment.

Description

Technical field [0001] The invention relates to a method for manufacturing a self-adhesive acrylic paint that can be applied to coating various substrate films, and belongs to the field of new environment-friendly polymer materials. Background technique [0002] At present, domestic food packaging films have higher and higher requirements for appearance. Because acrylic acid has high transparency and high gloss, the conventional method is to coat a layer of acrylic paint on the film to make it have a beautiful appearance. At present, acrylic coating The processing technology is to first coat a layer of polyurethane primer on the substrate, and then coat a layer of acrylic topcoat. The main reason is that the existing acrylic paint and the substrate have poor adhesion. After the machine is cured, the coating is almost completely peeled off with adhesive tape, and the subsequent process can no longer be used for printing and compounding. If a layer of primer is added before ac...

AI Technical Summary

Problems solved by technology

[0002] At present, domestic food packaging films have higher and higher requirements for appearance. Because acrylic acid has high transparency and high gloss, the conventional method is to coat a layer of acrylic paint on the film to make it have a beautiful appearance. At present, the coating of acrylic acid The processing technology is to first coat a layer of polyurethane primer on the substrate, and then coat a layer of acrylic topcoat. The main reason is that the existing acrylic paint and the substrate have poor adhesion. After the machine is cured, almost all the coatings are peeled off with adhesive tape, and the subsequent process can no longer be used for printing and compounding. If a layer of primer is added before acrylic coating, it will not only increase the cost, but also because the current mature technology is mainly solvent-based polyurethane primer. Coating, this coating method pollutes the environment greatly and has a certain impact on the health of operators. Although water-based polyurethane and water-based acrylic primers have been used in recent years, the cost is too high, and the technology has yet to be verified.

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