Comprehensive analysis and comparison of plexiglass acrylic sheet and polycarbonate sheet Ⅲ【Material Science】
Promoting the global influence and development of the optical grade ultra-thick polycarbonate (PC) sheet is of great significance for the application of special industrial transparent materials.
5. Comparison of mechanical properties: Optical grade special ultra-thick polycarbonate sheet transparent material, which can resist any smashing of 16 pounds (7.5 kg) hammer, and resist huge load impact, high-speed heavy impact and high-intensity impact, high-speed impact, large impact Weight impact, no shattering, no cracking, no silver streaks, pure high-definition, the board surface maintains dimensional stability without deformation, and maintains reliable mechanical properties; while the acrylic PMMA plexiglass material is a brittle material and does not have this performance.
6. Comparison of physical properties: Optical special ultra-thick polycarbonate sheet is a high-strength and tough material; acrylic PMMA plexiglass is brittle in texture and is a brittle material, with poor impact resistance, no impact, easy to break, narrow temperature resistance, and high temperature resistance. The mechanical properties of fatigue are significantly lower than those of polycarbonate, and it basically does not have the characteristics of engineering use.
Optical-grade special ultra-thick polycarbonate sheet is suitable for high pressure fields, but acrylic PMMA plexiglass cannot;
Optical grade special ultra-thick polycarbonate sheet is suitable for bulletproof field, acrylic PMMA plexiglass cannot;
Optical grade special ultra-thick polycarbonate sheet is suitable for anti-explosion field, acrylic PMMA plexiglass cannot;
Optical-grade special ultra-thick polycarbonate sheet is suitable for load-bearing and load-bearing fields, but acrylic PMMA plexiglass cannot;
Optical grade special ultra-thick polycarbonate sheet V0 flame retardant, acrylic PMMA plexiglass is flammable;
7. Processing comparison: Optical grade special ultra-thick polycarbonate sheet is easy to CNC process into industrial transparent parts such as plates, cylinders, cylinders, conical parts, irregular parts; acrylic PMMA plexiglass can also be machined theoretically, but Because plexiglass is a brittle material, its texture is relatively brittle, it is difficult to process, and the yield is low. In order to ensure the quality of industrial use and long-term use effect, acrylic PMMA plexiglass processing parts can only be used after X-ray flaw detection, so acrylic PMMA plexiglass materials are generally not used as processing materials for industrial transparent parts.
8. Comparison of fatigue resistance and durability: acrylic PMMA plexiglass has poor engineering durability, due to its brittle physical properties, and there are major defects in fatigue resistance in industrial use; optical-grade special ultra-thick polycarbonate sheet materials have good dimensional stability , The creep resistance is especially good, which can perfectly solve the fatigue resistance and durability of industrial transparent parts.