High-binding-power odor-removing water-based vacuum plastic emulsion and preparation method thereof

Abstract

The invention relates to a high-adhesion odor-removing water-based vacuum plastic emulsion and a preparation method thereof. The main component of the high-adhesion odorless water-based vacuum plasticemulsion is an imidazolyl propionate modified polyurethane compound, imidazolyl propionate has strong surface affinity with low surface tension, the rigidity is large, cohesive energy is high, and high adhesion force can be provided; residual acrylate, imidazole and derivatives thereof are subjected to an addition reaction in the synthesis process; obtained odorless, odorless and non-volatile small molecules can be used as a wetting agent to be rapidly spread on the surface of a base material, meanwhile, one end of the small molecules serving as an interface agent closely acts on the base material, the other end of the small molecules is combined with a polymer containing an imidazole structure, and the adhesive force of the polymer on the surface of the base material is improved. The water-based vacuum plastic emulsion is solvent-free, odorless, high in binding power and simple and convenient in post-treatment.

Description

technical field [0001] The invention relates to a water-based vacuum-absorbing plastic latex with high cohesive force and deodorization and a preparation method thereof. Background technique [0002] Water-based vacuum plastic is widely used in the lamination of PVC, PP and other soft films with MDF, particle board, multi-layer board, wood and other materials. Various color decorations and three-dimensional lines can be printed on the film, and the board produced by vacuum blister technology presents an aesthetic feeling that ordinary boards cannot achieve, and is very popular among people. [0003] Conventional water-based vacuum blisters are made by mixing water-based polyurethane dispersions with water-based ethylene-vinyl acetate emulsions. Water-based polyurethane emulsion is usually synthesized by the acetone method. Although most of the acetone will be distilled out later, there will still be about a small amount of acetone remaining in the system. Although ethylene...

AI Technical Summary

Problems solved by technology

However, since the water-based ethylene-vinyl acetate emulsion is less stable under neutral or weakly alkaline conditions than under weakly acidic conditions, increasing the amount of organic amine neutralizer may cause the water-based vacuum suction plastic system to be unstable

Therefore, some manufacturers use water-based acrylate emulsion instead of water-based ethylene-vinyl acetate emulsion, which can perfectly solve the problem of continuous release of acetic acid and ensure the performance of water-based vacuum plastic. However, due to incomplete polymerization of water-based acrylate emulsion, there is a small amount of acrylate monomer. body residue, although the smell is low, but in essence, it will pose a greater threat to the health of the operator

[0005] For the solvent acetone residue of water-based polyurethane dispersion in water-based vacuum plastic glue, although those skilled in the art have carried out a lot of explorations, there has been no good solution all the time, which is mainly due to the use of acetone method for water-based polyurethane dispersion. Excellent performance and process stability, while other methods at this stage cannot achieve the balance of performance and process stability