Acrylic resin, low-VOC acrylic coating material and preparation method of acrylic resin

Abstract

The invention discloses acrylic resin. A formula of the acrylic resin comprises a base material and an initiator, wherein the base material comprises a monomer and a solvent; the monomer comprises a common monomer and a special monomer, and the special monomer comprises tert-butylaminoethyl methacrylate and cyclohexyl methacrylate. The invention also discloses a low-VOC acrylic coating material prepared by taking the acrylic resin as a raw material and a preparation method of the acrylic resin. On the basis of a traditional process, special monomers are introduced, high-temperature reaction iscarried out, the monomer concentration is adjusted, the molecular weight is reduced, vacuum negative pressure devolatilization is carried out, a strong solvent is diluted, the high-solid low-viscosity environment-friendly low-VOC acrylic resin is obtained, and a very good effect is obtained by testing that all indexes exceed the traditional indexes. The acrylic resin with uniform molecular weight, high solid content and low viscosity is obtained, and the defects in the prior art that high solid content and low viscosity resin is non-uniform in molecular weight, low in hardness, incapable of reaching the variable linkage density, affected in chemical resistance and the like are overcome.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to an acrylic resin, a low-VOC polypropylene coating material and a preparation method thereof. Background technique [0002] Propylene coating material is based on acrylic resin and configured with isocyanate-containing curing agent. The coating has the advantages of high hardness, good adhesion and flexibility, and good anti-corrosion performance. It is used in machine tools, hardware, automobiles, and large It is widely used in steel structure, construction machinery and other fields. [0003] However, in the preparation of polypropylene coating materials, it is difficult to achieve high solidity and low viscosity simultaneously in the preparation, which limits its application. In the prior art, high-solid and low-viscosity resins generally have disadvantages such as non-uniform resin molecular weight, low hardness, and low variable density, which affects chemical resistance and...

AI Technical Summary

Problems solved by technology

[0003] However, in the preparation of polypropylene coating materials, it is difficult to achieve high solidity and low viscosity at the same time, which limits its application

In the prior art, high-solid and low-viscosity resins generally have disadvantages such as uneven resin molecular weight, low hardness, and low variable density, which affects chemical resistance.

In addition, the existing polypropylene coating materials contain a certain amount of volatile organic compounds (VOC), which is not conducive to environmental protection.

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