SPC stone-plastic floor and preparation method thereof

Abstract

The invention discloses an SPC stone-plastic floor and a preparation method thereof. The SPC stone-plastic floor sequentially comprises a plastic balance layer, a stone-plastic base material layer, acolor film decoration layer, a PVC wear-resisting layer and a UV coating from bottom to top, lock catch grooves matched with each other are formed in the two sides of the stone-plastic base material layer, and raw materials of the stone-plastic base material layer are prepared from the following components including, by weight, 100 parts of PVC, 15 to 30 parts of CPE, 200 to 300 parts of calcium carbonate, 10 to 15 parts of an A4 molecular sieve, 8 to 10 parts of polyethylene wax, 1 to 3 parts of a silane surfactant, 3 to 5 parts of a phosphite ester type liquid barium-cadmium-zinc composite heat stabilizer and 0.5 to 1 part of butylated hydroxyanisole. According to the SPC stone-plastic floor, the PVC is modified through CPE, the stability of the PVC is improved through the phosphite ester type liquid barium-cadmium-zinc composite heat stabilizer and the butylated hydroxyanisole, and the CPE modification effect and the PVC stability are further improved through the A4 molecular sieve;and the SPC stone-plastic floor has good impact strength and dimensional stability, the dimensional shrinkage rate is smaller than 0.1%, and the SPC stone-plastic floor is not prone to deformation, warping and generating splicing open joints.

Description

technical field [0001] The invention relates to an SPC stone-plastic floor and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Stone plastic flooring (SPC) is a multi-layer structure PVC sheet flooring, which has the characteristics of ultra-thin and ultra-light, wear-resistant and high-elasticity, waterproof and moisture-proof, convenient paving, and long service life. It is widely used in indoor floor decoration. [0003] Stone-plastic flooring generally includes a multi-layer structure such as a base material layer, a decorative layer, and a wear-resistant layer. The base material layer is extruded through a thermal fusion process with natural stone powder (calcium carbonate powder) and polymer resin (polyvinyl chloride) as the main raw materials. forming. Due to the fact that the natural stone powder and the PVC material cannot react chemically during melting, the thermal shrinkage ratio of the two materials is q...

AI Technical Summary

Problems solved by technology

Due to the fact that the natural stone powder and the PVC material cannot react chemically during melting, the thermal shrinkage ratio of the two materials is quite different. At the same time, due to the poor thermal stability of the PVC material, the thermally extruded base material has a high dimensional shrinkage rate, resulting in floor dimensions. Large changes, easy to cause problems such as splicing, deformation and warping