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Commonly known as plexiglass, their products are molding material and profiles two. Better performance molding compound 372 is a modified acrylic #, 373 # plastic. 372 # plexiglass for the small amount of methyl methacrylate and styrene copolymer, and its performance is better molding. PMMA is 372 # 373 # 100 powder plus 5 copies of the small breast rubber blends, have a high impact resistance. Glass density 1.18g/cm3, lighter than ordinary silica glass half. Mechanical strength of ordinary silica glass more than 10 times. It is light and tough, easy to color, has good electrical insulation properties. Chemical stability, resistant to chemical corrosion in general, but soluble in aromatic hydrocarbons, chlorinated hydrocarbons and other organic solvents. Under normal conditions, a more stable size. Its biggest drawback is the low surface hardness, easy to scratch hard objects nap. Requirements for the manufacture of glass has a certain transparency and strength of vibration, explosion-proof and observe other aspects of parts, such as aircraft and automobile windows, air cover, oil cups, optical lenses, transparent model, transparent pipes, lights shade, and a variety of equipment parts oil standard, can be used as insulating materials, billboards and so on.