Learn about the product characteristics of acrylic glass

Acrylic glass has outstanding inductive mechanics function and ranks in the forefront of general plastics. The tensile, flexural, and contraction strengths are all higher than polyolefins, and higher than polystyrene, polyvinyl chloride, etc., and its impact resistance is poor, but it is also slightly Better than polystyrene. The cast bulk polymerized polymethyl methacrylate sheet (such as aerospace plexiglass sheet) has higher tensile, tortuous, and shrinking mechanical functions, and can reach the level of engineering plastics such as polyamide and polycarbonate.

Generally speaking, the tensile strength of polymethyl methacrylate can reach the level of 50-77Mpa, and the bending strength can reach the level of 90-130Mpa. The upper limit of these functional data has reached or even exceeded some engineering plastics. The elongation at break is only 2%-3%, so the mechanical features are basically hard and brittle plastics.

It is notch-sensitive and easy to crack under stress, but the fracture is not as sharp and uneven as polystyrene and ordinary glass. 40°C is a secondary transition temperature, which is equivalent to the temperature at which the pendant methyl group starts to move. If it exceeds 40°C, the resistance and ductility of the material will be improved. Polymethyl methacrylate has low surface hardness and is easy to scratch.

The heat resistance of polymethyl methacrylate is not high. Although its glass transition temperature reaches 104°C, the maximum continuous operating temperature varies between 65°C and 95°C depending on the conditions of the workpiece, and the heat distortion temperature is about 96 ℃ (1.18MPa), Vicat softening point is about 113℃