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What are the options for plexiglass sheets?

by:UNQ     2021-03-30
Different performance, different colors and visual effects to meet the ever-changing requirements. 1. Acrylic boards are divided into cast boards and extruded boards according to the production process. According to the transmittance, they can be divided into transparent boards, semi-transparent boards (including transparent boards for dyeing boards), and color boards (including black and white and color boards); according to performance Impact board, anti-ultraviolet board, ordinary board and special board such as high impact board, flame retardant board, frosted board, metal effect board, high wear-resistant board, light guide board, etc. Casting plate: high molecular weight, excellent rigidity, strength and excellent chemical resistance. Therefore, it is more suitable for processing large-size identification plaques, and the time during the softening process is slightly longer. This kind of board is characterized by small batch processing, incomparable flexibility in color system and surface texture effect, and complete product specifications, which can be used for various special purposes. Extruded plates: Compared with cast plates, extruded plates have lower molecular weight, slightly weaker mechanical properties, and higher flexibility. However, this feature is conducive to bending and hot forming processing, and the softening time is shorter. When processing large-size plates, it is beneficial to various rapid vacuum suction molding. At the same time, the thickness tolerance of the extruded plate is smaller than that of the cast plate. Because the extruded plates are mass-produced and automated, the colors and specifications are inconvenient to adjust, so the diversity of product specifications is limited.

2. There is another type of acrylic recycled board that uses recycled acrylic scrap, which is thermally degraded to obtain recycled MMA (methyl methacrylate) monomer, which is then obtained by chemical polymerization. After a rigorous process, the pure MMA monomer can be re-obtained, and there is no difference in quality from the newly synthesized monomer. However, the purity of the produced degradable monomers is not high, and the quality and performance of the sheet after forming are very poor. Summary: The extruded plate uses granular raw materials, which are extruded after being dissolved at high temperature, while the casting plate is directly cast with MMA monomer (liquid). Although the extruded plate is relatively flat and smooth in appearance, it is because it is formed when the granular raw material is formed. To complete the polymerization. When processed into plates, its structure and performance are weak, and it is not suitable for outdoor marking products. It is only suitable for indoor products such as crystal letters or product brackets. In addition, since most of the extruded panels do not have the function of UV protection, their outdoor use life is not the same as that of the cast panels. The color will gradually fade and it is easy to become brittle until it breaks. The casting plate is to complete the structural polymerization during the processing of the plate, during which the ultraviolet absorber is added, which has extremely high strength and UV function. The outdoor service life is more than 5 years or even 10 years, and the color is always bright as new during use.

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