Sheet in PMMA C Plexiglas 3000x2000 mm transparent

PMMA, polymethyl methacrylate or everyday acrylic, is cast here, that is cast in a mold instead of pressed through a die and is sold under the Plexiglas brand. Cast acrylic has longer molecular chains than extruded, which gives higher heat resistance, better mechanical values and tougher glued joints. At the same time it is harder to thermoform and slightly more expensive.

The density is 1.19 g/cm³. The tensile strength is 78 MPa, the tensile modulus 3350 MPa and the flexural strength 118 MPa. The elongation at break is 5.8 percent and the flexural modulus 3200 MPa. The impact strength is 16 kJ/m² unnotched and 2 kJ/m² notched. Vicat B50 sits at 110 °C and HDT/B at 0.45 MPa at 114 °C.

The maximum service temperature is 80 °C continuously and 90 °C for short periods. Decomposition does not start until above 280 °C. The linear expansion is 70 x 10⁻⁶ per kelvin and the thermal conductivity 0.19 W/(m·K). The light transmission for transparent sheets is 92 percent at 3 mm thickness and the refractive index 1.492. The water absorption is 0.2 percent after 24 hours immersed and 2.1 percent at saturation. The dielectric strength is 30 kV/mm and CTI 600 V. The building fire class is B2 per DIN 4102 and E per EN 13501. Transparent grades are approved for direct food contact under EU 10/2011.

The sheet is sawn, milled, drilled and polished with tools made for plastic. Thermoforming is done at temperatures around 160 to 170 °C for cast acrylic. Acrylic adhesive with methyl methacrylate is the standard choice for bonding. After milling and bonding the material should be annealed to reduce internal stresses and avoid stress cracking.

Transparent and colored acrylic is used for signs, illuminated signs, machine guards, inspection hatches, store fittings, displays, aquariums, safety glazing, exhibition builds, furniture fronts and roof domes. The material weighs half as much as glass at the same thickness and does not break into sharp shards.

This cast Plexiglas sheet is 3000x2000 mm in transparent, a format that suits both large surfaces and parts that are cut to your dimensions.

Not sure which material suits you? Call us and we will sort it out.