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PMMA

Polymethylmethacrylate

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Overview

Applications

Comparison

Chemical formula

Specific gravity

1.19

Thermal properties

70~

Tg(℃)

N/A

Tm(℃)

Characteristics

Light transmittance

Scratch resistance

Weatherabilty

Rigidity

Colorability

Good impact resistance at thinner wall

Commentary

It is a polymer of methacrylate ester. It has high transparency, rigidity, and surface hardness, and has properties similar to glass.

Key points

Good chemical resistance to acids and alkalis.

For automotive applications, it is not suitable for headlights due to its thin wall, but is used for tail lamps due to its good colorability.

使われ方

Partition

Reason for adoption

Transparency, scratch resistance, self-supporting (transparency, scratch resistance, rigidity)

Water tank

Reason for adoption

Must be visible inside, scratch-resistant (transparency, scratch resistance), hard and unyielding (rigidity)

Tail lamp

Reason for adoption

Transparency, good colorability, dimensional stability, and no deformation, scratch resistance

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