PMMA plastic (polymethyl methacrylate), popularly known as methacrylate, is one of the engineering plastics. This highly transparent thermoplastic polymer is obtained from the polymerisation of the monomer methyl methacrylate. Thanks to its transparency, aesthetics and scratch resistance, PMMA can be considered an alternative to glass.
Properties of PMMA
PMMA has numerous properties and characteristics that make it the polymer of choice for many applications in the automotive, lighting, construction, cosmetics and medical sectors.
- Exceptional optical properties.
- Rigidity and dimensional stability.
- Excellent resistance to ultraviolet radiation and weather aging.
- Transparency and glossy finish.
- Hardness and scratch resistance.
- Can be polymerised in spherical solid form or spherical methacrylate polymers.
The advantages of this material are numerous: low weight, high transparency, easy moulding, less brittleness and possible repair in case of any surface damage. PMMA is non-toxic if fully polymerised. Moreover, it is a thermoplastic that can be recycled by chemical processes, since its monomer MMA is the only plastic that can undergo the recycling process an infinite number of times without losing its mechanical characteristics and transparency.
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