Oxidized polyethylene wax emulsion water-repellent agent and preparation method thereof

Abstract

The invention relates to an oxidized polyethylene wax emulsion water-repellent agent which is prepared from the following raw materials by weight: 35-40% of oxidized polyethylene wax, 3-5% of compound mixed emulsifying agent of Tween-60, Span-80 and disproportionated rosin, 0.2-0.4% of silicon dioxide nano powder and the balance of water. The water-repellent agent has pH of 7-8 and viscosity of 150-450 mP*s. The emulsion is modified by nano silicon dioxide, so that the blend-modified emulsion stably exists in the form of adsorbing gas atom on nano-sized concave surface, and is equivalent to a layer of stable gas film on macroscopic surface, and oil or water cannot directly contact the surface of the material, therefore, the material surface presents hydrophobicity and oleophobicity, and obtains super-hydrophobic super-oleophobic effects. The product also has certain fire retardancy, and can meet waterproof and moistureproof functions as well as combustion-supporting performance of carton and pasteboard high-grade paper products.

Description

technical field [0001] The invention relates to a flame-retardant and moisture-proof technology for cartons, in particular to an oxidized polyethylene wax emulsion water-resistant agent. The invention also relates to a preparation method of the anti-water agent. Background technique [0002] From the end of the 1930s to the 1940s, it was found that adding some water-soluble synthetic resins to the paper fibers and drying them together would greatly improve the wet strength and water resistance, so the application of wet strength resin water repellents was rapid. developed. Usually the resin must be highly dispersible in water, that is, hydrophilic, reactive and have an opposite charge to the fiber, that is, cationic. These properties not only promote the adsorption of the resin on the fibers, but also effectively fix it, thereby improving the water resistance of the paper. [0003] At present, the commonly used water repellents mainly include D and classified according t...

AI Technical Summary

Problems solved by technology

In addition, in the 1970s, a lot of research was done on the modification of melamine formaldehyde resin abroad, and a high-solid, storage-stable trimeric amine-formaldehyde resin was developed. This type of resin is used in the coating formulation of starch-latex mixed adhesive Satisfactory results have been achieved, but even modified melamine resins will still produce a large amount of formaldehyde gas, volatile solvents, or crack small molecules during production, storage, and use, which will cause serious harm to human health. Combustible, pollutes the air, is unfriendly to the surrounding environment and greatly limits the scope of its use, so it is gradually eliminated

Anhui Bozhou Gujing Packaging Materials Co., Ltd. produces water repellent for beer box packaging products. According to customer requirements, the printed beer box surface paper should be treated with water resistance in special glazing equipment or laminating equipment, which is divided into oily ( solvent-based) and water-soluble, but because the solvent-based volatilizes a large amount of harmful gases such as organic solvents, which is not conducive to the health of employees, most companies now use water-soluble glazing agents for waterproofing

The company produces special water-resistant products for corrugated base paper and cardboard paper. According to customer requirements, it uses sizing paper or sprays it on cardboard paper, and adds a waterproof adhesive. It has good adhesion and waterproof performance, but the use of The cardboard after this anti-water oiling treatment must be completely soaked in water for more than 30 minutes before the three base papers can be completely peeled off, which is not conducive to improving production efficiency