Strippable temporary package film composition

Abstract

The invention discloses a strippable temporary package film composition. The composition is prepared from the following raw materials in percentage by mass: 60-80 percent of aliphatic waterborne polyurethane emulsion, 5-10 percent of silica sol, 2-5 percent of titanium dioxide, 3-5 percent of mica, 1-3 percent of waterborne silicone oil, 0.1-0.5 percent of sodium dodecyl benzene sulfonate, 0.5-1 percent of alkali-swelled acrylic acid thickener, 0.3-0.6 percent of polyether modified dimethyl siloxane, 0.1-0.5 percent of acrylic copolymer sylvine, 0.1-0.5 percent of polyether modified organic silicon and the balance of distilled water; and the aliphatic waterborne polyurethane emulsion is prepared from the following raw materials in parts by mass: 40-80 parts of isophorone diisocyanate, 25-40 parts of polypropylene glycol, 25-80 parts of polyethylene glycol, 3-10 parts of dimethylolpropionic acid, 50-80 parts of butanone, 5-12 parts of diethylenetriamine, 3-9 parts of triethylamine, 1-3 parts of dibutyltin dilaurate and 40-80 parts of distilled water. The strippable temporary package film composition is prepared by selecting aliphatic waterborne polyurethane emulsion and silica sol as film-forming substances to improve the mechanical strength and strippable performance of coating and the durability for acid, alkali and salt solutions.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to a peelable temporary packaging film composition. Background technique [0002] In order to prevent the materials or semi-products exposed to the atmosphere from being polluted, corroded and damaged, and prolong their service life, they are usually coated with good protective and peelable coatings on their surfaces for effective and temporary maintenance. Archive protection. In this way, it can not only isolate the invasion of air, salt spray, and microorganisms from the outside to achieve anti-corrosion effect; but also achieve the effect of cleaning and decontamination by adsorbing pollutants. Compared with solvent-based protective coatings, water-based protective coatings are safer and more environmentally friendly, so they are widely used in the field of product packaging and decoration. However, the existing water-based protective coatings still have the disadvantag...

AI Technical Summary

Problems solved by technology

However, the existing water-based protective coatings still have the disadvantages of low film strength, poor peelability and single protective performance.