PMMA (acrylic) is a transparent thermoplastic and one of the world's most widely used plastics thanks to its processability and ease of coloration. Acrylic is also chemically stable with good mechanical properties and resistance to the elements.
Applications: Lenses, light shades, light pipes, optical fibers, signage.
Behavior: Acrylic has poor chemical resistance, and can be brittle and vulnerable to stress cracks. If this poses problems, PC can be substituted in. Extra draft is required during tooling.
|Density||1.01 – 1.20 g/cc||0.0365 – 0.0434 lb/in³|
|Hardness||68 – 113||68 – 113|
|Tensile Strength (Yield)||13.0 – 65.0 MPa||1890 – 9430 psi|
|Tensile Strength (Ultimate)||22.1 – 49.0 MPa||3210 – 7110 psi|
|Elongation at Yield||0.62 – 30 %||0.62 – 30 %|
|Elongation at Break||3.0 – 150 %||3.0 – 150 %|
|Dielectric Strength||18.0 – 50.0 kV/mm||457 – 1270 kV/in|
|Melt Temperature||180 – 274 °C||356 – 525 °F|
Painting the surface of a part improves its aesthetic appearance and can provide brand recognition to consumers. In addition, painting can have a protective effect on parts.
Screen printing is a printing technique where a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil.
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