1. The acrylic sheet is divided into the casting board and extrusion board according to the production process. According to the transmittance, it can be divided into transparent board, translucent board (including transparent board of dyeing board), color board (including black and white and color board); Impact plate, anti-ultraviolet plate, ordinary plate and special plate such as high impact plate, flame retardant plate, frosted plate, metal effect plate, high wear plate, light guide plate, etc.
A: Casting plate: high molecular weight, excellent stiffness, strength, and excellent chemical resistance. Therefore, it is more suitable for processing large-sized signboards, which is relatively long in the softening process. This sheet is characterized by small batch processing, incomparable flexibility in the color system and surface texture effects, and complete product specifications for a variety of special applications.
B: Extrusion plate: Compared with the cast plate, the extruded plate has a lower molecular weight, a slightly weaker mechanical property, and higher flexibility. However, this feature facilitates bending and thermoforming processes with a shorter softening time. It is advantageous for various rapid vacuum forming when dealing with large-sized sheets. At the same time, the thickness tolerance of the extruded plate is smaller than that of the cast plate. Since the extrusion plate is mass-produced in an automated manner, color and specifications are inconvenient to be conditioned, so the product specification diversity is limited.
2, Acrylic also has a kind of recycled material recycling board is the use of recycled acrylic trim, after thermal degradation to obtain regenerated MMA (methyl methacrylate) monomer, and then obtained by chemical polymerization. After a rigorous process, the pure MMA monomer can be regained, and there is no difference in quality from the new synthetic monomer. However, the degradation monomer produced is not high in purity, and its quality and performance are poor after the sheet is formed.
