PVC plastic floor and preparation method thereof

Abstract

The invention provides a PVC plastic floor comprising a substrate layer, a middle layer, a decoration layer, a wearing layer and a paint layer jointed in sequence; either one or both of the substrate layer and the middle layer comprise one layer of PVC matrix and filling particles scattering in the PVC matrix; the filling particles comprise SiO2, Al2O3, CaCO3, and NaC1; the invention also comprises a PVC plastic floor preparation method; the PVC plastic floor is more stable than a conventional normal PVC plastic floor.

Description

technical field [0001] The invention relates to the field of floor manufacturing, in particular, the invention relates to a stone-plastic floor and a preparation method thereof. Background technique [0002] Stone-plastic flooring is popular among consumers because of its waterproof, wear-resistant, and long service life. It is generally composed of PVC (polyvinyl chloride) substrate layer, PVC middle layer, decorative layer, wear-resistant PVC layer, and UV paint. The layers are bonded sequentially, and the PVC base layer and the PVC middle layer are generally obtained by adding stone powder (usually calcium carbonate) to the PVC material, and then heat-fusion the mixture of the two. In the process of thermal fusion of stone powder (inorganic materials) such as calcium and organic material PVC, stone powder cannot produce cross-layer, cross-linking, and fusion reactions with PVC materials, but simply acts as a filling, and the heat shrinkage of these two materials There is...

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Problems solved by technology

[0002] Stone-plastic flooring is popular among consumers because of its waterproof, wear-resistant, and long service life. It is generally composed of PVC (polyvinyl chloride) substrate layer, PVC middle layer, decorative layer, wear-resistant PVC layer, and UV paint. The layers are bonded sequentially, and the PVC base layer and the PVC middle layer are generally obtained by adding stone powder (usually calcium carbonate) to the PVC material, and then heat-fusion the mixture of the two. In the process of thermal fusion of stone powder (inorganic materials) such as calcium and organic material PVC, stone powder cannot produce cross-layer, cross-linking, and fusion reactions with PVC materials, but simply acts as a filling, and the heat shrinkage of these two materials There is a large difference in ratio, and it is easy to form gaps, air bubbles or air chambers of different sizes (such tiny gaps are very obvious under a 10-fold magnifying glass), and the resulting stone-plastic floor has low strength and unstable product performance. Especially under the influence of temperature and moisture in the environment, this kind of stone-plastic floor products will have large size deviations, resulting in assembly gaps, which seriously affect the appearance and quality of the floor

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