High-hardness, high-toughness, scratch-resistant PVC paste for PVC foam wallpaper and preparation method thereof

Abstract

The invention discloses a high-hardness, high-toughness and anti-scratch PVC (Polyvinyl Chloride) paste for a piece of PVC foamed wallpaper. The paste disclosed by the invention comprises DOP (Dioctyl-Phthalate), nano graphene oxide, nano aluminium oxide, titanium dioxide, viscosity reducer, organic silicon compound powder, PVC paste resin, a micro-ball foaming agent and a thermal stabilizer. The invention further discloses a preparation method of the high-hardness, high-toughness and anti-scratch PVC paste for the PVC foamed wallpaper. The high-hardness, high-toughness and anti-scratch PVC paste for the PVC foamed wallpaper disclosed by the invention has the characteristics of being safe, non-toxic, high in hardness and toughness, anti-scratch and the like, and can be widely applied to indoor finish and decoration of various public and private places.

Description

technical field [0001] The invention relates to a high-hardness, high-toughness and scratch-resistant PVC paste for PVC foam wallpaper and a preparation method thereof, which are mainly used in the technical field of wall surface decoration materials. Background technique [0002] Wallpaper, also known as wallpaper, is a widely used interior decoration material. Because wallpaper has the characteristics of changeable style, various colors, rich patterns, safety and environmental protection, convenient construction, reasonable price, easy to replace and many other interior decoration materials, it is popular in developed countries and regions such as Europe, America, Southeast Asia, Japan and South Korea. gained considerable popularity. With the improvement of people's living standards in our country, wallpapers are widely favored by consumers because of their variety of colors and styles, especially PVC wallpapers, because of their realistic patterns, strong three-dimension...

AI Technical Summary

Problems solved by technology

[0005] However, the traditional PVC wallpaper, especially the PVC foam wallpaper, has the characteristics of poor hardness, easy collapse under force, and not resistant to scratches. Therefore, the development of PVC foam wallpaper has been greatly restricted.

The above-mentioned problems in the traditional PVC foam wallpaper are mainly caused by the following two reasons: 1. The degree of polymerization of the PVC paste resin used in the traditional PVC foam wallpaper is generally 950-1050, and the PVC paste resin with this degree of polymerization is generally 950-1050. It belongs to the PVC paste resin with a lower degree of polymerization, and the PVC paste resin with a lower degree of polymerization has lower hardness, lower resilience, higher compression set, weaker tensile strength and lower wear resistance. Second, traditional PVC foam wallpaper generally adds 20-30% inorganic fillers to its PVC paste, the most important inorganic fillers are heavy calcium carbonate, talcum powder and titanium dioxide, and the amount of inorganic fillers used is The particle size is generally 400-1000 mesh. Although the addition of inorganic fillers can save a certain amount of cost and improve the hardness and rigidity of the entire system by a small amount, these inorganic fillers of several microns or even tens of microns are not compatible with PVC paste resin, DOP, viscosity reducer, foaming agent and other polymers and organic materials have significant differences in chemical structure and physical form, which makes the whole system lack of affinity, and therefore leads to a large increase in the strength and toughness of the entire PVC foaming system. Amplitude reduction

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