Angle-foldable PVC rigid-flexible composite board and preparation method thereof

Abstract

The invention discloses an angle-foldable PVC rigid-flexible composite board and a preparation method thereof. The composite board comprises a rigid layer, a flexible layer and a facing layer, whereinan external corner groove and an internal corner groove are formed in the rigid layer, and the rigid layer is prepared from PVC resin, a calcium-zinc composite stabilizer, stearic acid, polyethylenewax, polyacrylate, chlorinated polyethylene, bamboo wood powder, calcium carbonate stone powder, azodicarbonamide, an antibacterial filler and sodium iodide; and the flexible layer is prepared from the following raw materials: PVC resin, a PVC softening agent, a calcium-zinc composite stabilizer, stearic acid, polyethylene wax, calcium carbonate stone powder, azodicarbonamide, an antibacterial filler and sodium iodide. According to the invention, a rigid-flexible composite structure is adopted, so good impact resistance is achieved; internal and external corners can be bent along the internaland external corner grooves and can be seamlessly spliced; the antibacterial filler is added, so the mechanical property of the board is improved, and the board is waterproof and mildew-proof; the rigid layer, the flexible layer and the facing layer are subjected to hot-pressing composite molding together, process is simple, the use of glue is avoided, and energy conservation and environmental protection are better achieved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a bendable PVC rigid-flexible composite board and a preparation method thereof. Background technique [0002] PVC is a kind of thermoplastic polymer material, which is often mixed with wood (wood cellulose, plant cellulose), stone powder, etc. in the board to form new composite decorative materials such as wood-plastic board, stone-plastic board, etc., because it has both wood and plastic Or the properties and characteristics of stone powder and plastics have been widely used in interior decoration and other fields. [0003] Traditional wood-plastic panels or stone-plastic panels have poor bending resistance and are easy to break. When they are used for wall or floor decoration, they must be sawed and then spliced ​​through internal or external corner lines when they meet corners. For example, "A male corner structure" disclosed in Chinese patent literature, its annou...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the poor bending resistance and easy breakage of the composite boards in the prior art. When they are used for wall or floor decoration, when corners are encountered, the boards must be sawed and then spliced ​​through internal corner lines or external corner lines. , the construction process is cumbersome, the connection stability of the boards is poor, and the decorative effect is affected. A PVC rigid-flexible composite board with bendable angles and its preparation method are provided. Layer compounding, so that the PVC rigid-flexible composite board has good mechanical properties, not easy to break and deform, and at the same time, it can be bent at the corner without cutting and connecting with male and female corners, which simplifies the construction process , to ensure the decorative effect

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