Acrylic sheet classification!
Many plexiglass (acrylic) sheet variations. Ordinary board are: a transparent plate, the transparent plate stained, white plate, color plate; special plate are: sanitary board, clouds panels, mirror panels, cloth panels, hollow plate, impact plate, fire-retardant board, wear-resistant plate, checkered surface, matte board, pearl panels, metal plates and other effects. Different performance, different colors and visual effects to meet the ever-changing requirements.
1, according to the production process of acrylic panels and sub-casting plate pressing plate, press transmittance can be divided into the transparent plate, translucent panels (including dyeing plate transparent plate), Swatch (including black and white and color plates); according to the performance fractance impingement plate, UV plate, plate and special plate ordinary plate as high impact, fire-retardant board, matte board, metallic plates, high wear-resistant plate, the light guide plate and the like.
A: casting plate: high molecular weight, excellent stiffness, strength and excellent chemical resistance. Thus more suitable for processing large-sized identification plaque, in the softening process is relatively longer time. This feature is a small batch plate processing, there are unmatched flexibility in color and surface texture effect of the system, and the complete product specifications, useful in a variety of special applications.
B: pressing plate: Compared with casting plate, pressing plate lower molecular weight, mechanical properties weaker, relatively high flexibility. However, this feature is conducive to bending and hot forming, softening shorter. In dealing with the larger size of the plate, it is conducive to all kinds of rapid vacuum forming. Meanwhile, the pressing plate thickness tolerances smaller than the cast slab. Since the pressing plate is a high volume automated production, color and size inconvenience conditioning, so the diversity of product specifications are subject to certain restrictions.
2, there is a call back to the acrylic panels are renewable materials recycled acrylic scrap, after thermal degradation regenerated MMA (methyl methacrylate) monomer, followed by the chemical reaction of polymerization and then come. After a rigorous process, can retrieve pure MMA monomer, and newly synthesized monomers, there is no difference in quality. But produced by the degradation of the monomer purity is not high, after the sheet metal forming, its quality, poor performance.
Summary: When squeezed a particulate material, dissolved after high temperature extrusion molding, and casting plate with MMA monomer (liquid) directly cast molding, extrusion, although relatively flat and smooth upper plate appearance, but because of the particulate material forming to complete the polymerization. When processed into sheets its structure, performance is weak, is not suitable as a material for outdoor identify the product, the product is only suitable for indoor or word crystal products such as stents. In addition, as most do not squeeze plate with anti-ultraviolet function, life casting plate with its outdoor use is quite different, the color will gradually fade and easy to embrittlement, until rupture. Cast slab is completed sheet structure polymerization process, during which added an ultraviolet absorber, with high strength and UV capabilities, outdoor life of up to 5 years or even 10 years, during use of color has been bright as new.