Introduction, production and application of PMMA in life

PMMA (Polymethyl Methacrylate), commonly known as acrylic glass or plexiglass, is a transparent thermoplastic with the following characteristics:

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• High Transparency: Light transmittance of up to 92%, superior to ordinary glass.

• Lightweight: Density of about 1.18 g/cm³, lighter than glass.

• Weather Resistance: UV-resistant, less prone to yellowing or aging.

• Mechanical Properties: Good impact resistance and strength.

• Processability: Easy to cut, drill, thermoform, etc.

Production of PMMA

PMMA is primarily produced through free radical polymerization, with common methods including:

1. Bulk Polymerization:

• Methyl methacrylate (MMA) monomer is mixed with an initiator and heated to initiate polymerization.

• Suitable for producing sheets, rods, etc.

2. Suspension Polymerization:

• MMA monomer is suspended in water, and an initiator is added for polymerization.

• Suitable for producing granular PMMA.

3. Emulsion Polymerization:

• MMA monomer is emulsified in water, and an initiator is added for polymerization.

• Used for producing coatings, adhesives, etc.

Applications of PMMA in Daily Life

PMMA is widely used in various fields:

1. Construction:

• Used as windows, skylights, partitions, etc., as a substitute for glass.

• Used in billboards, lightboxes, etc.

2. Automotive:

• Used for lamp covers, dashboards, windows, etc.

3. Medical:

• Used to manufacture intraocular lenses, dental materials, surgical instruments, etc.

4. Optics:

• Used for eyeglass lenses, camera lenses, optical fibers, etc.

5. Household:

• Used to make furniture, bathtubs, aquariums, etc.

6. Art:

• Used for sculptures, decorations, display stands, etc.

Summary

With its excellent transparency, lightweight, and weather resistance, PMMA is widely used in construction, automotive, medical, optical, and other fields, becoming an indispensable material in modern life.

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