Overview
Polymethyl methacrylate (PMMA), commonly known as acrylic or plexiglass, is a synthetic polymer of methyl methacrylate. Developed in the 1930s, PMMA has become one of the most widely used transparent plastics globally. Mitsubishi Engineering's PMMA products are particularly recognized for their exceptional clarity, weatherability, and processing characteristics. As an engineering plastic, PMMA combines glass-like transparency with superior impact resistance. The material transmits up to 92% of visible light (more than glass) while weighing only half as much. Mitsubishi's proprietary formulations offer enhanced UV stability, making their PMMA suitable for long-term outdoor applications without significant yellowing or degradation.
Physical and Chemical Properties
PMMA exhibits excellent optical clarity with a refractive index of 1.49, comparable to glass. The material has good mechanical strength with a tensile strength of 50-77 MPa and elongation at break of 2-10%. Mitsubishi's grades often exceed these baseline properties through advanced polymerization techniques. Chemically, PMMA is resistant to many dilute acids, alkalis, and alcohols, though it can be attacked by strong solvents like acetone. The material has a maximum continuous service temperature of approximately 80-95°C. Mitsubishi Engineering has developed specialized high-heat resistance grades that maintain dimensional stability up to 100-110°C.
Main Applications
Mitsubishi PMMA is extensively used in automotive components such as light covers, instrument panels, and interior trim due to its combination of optical clarity and impact resistance. The electronics industry utilizes it for smartphone screen protectors, LCD light guides, and display windows. In architecture, Mitsubishi's PMMA sheets are employed for skylights, sound barriers, and decorative panels where weather resistance is crucial. The signage industry values its excellent machining characteristics for producing illuminated letters and displays. Medical applications include incubators, drug delivery devices, and dental prosthetics where biocompatibility is required.
Safety and Storage
PMMA is generally considered safe for most applications, classified as non-hazardous under normal conditions. However, dust generated during machining should be controlled through proper ventilation or PPE. Mitsubishi's PMMA products comply with international food contact regulations including FDA and EU standards. Storage recommendations include keeping sheets flat in a clean, dry environment at temperatures below 40°C. Stacked sheets should be protected with interleaving paper to prevent surface scratching. For long-term storage, maintain relative humidity below 60% to prevent potential moisture absorption that could affect processing characteristics.
B2B Procurement Guide
When sourcing Mitsubishi Engineering's PMMA, specify the required grade (standard, high-impact, UV-resistant, etc.), thickness tolerance, and optical properties. Standard sheet sizes typically range from 1,000×2,000mm to 2,000×3,000mm, with thicknesses from 1mm to 50mm available. Lead times vary based on order volume and customization requirements - standard grades typically have 2-4 week delivery, while special formulations may require 6-8 weeks. For bulk purchases (pallet quantities or more), volume discounts of 10-20% are commonly available. Consider ordering samples for testing optical and mechanical properties before large purchases.
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