PMMA Rod

Formula: PMMA, Acrylic

Form: Rod

Material: Polymethyl methacrylate (PMMA)

Commodity: Polymers

Poly(methyl methacrylate) (PMMA) rods are valued for their optical clarity, mechanical strength, and adaptability, making them essential in scientific and industrial applications. They are widely used in optical systems such as waveguides, lenses, and light transmission devices, with ongoing exploration into advanced technologies like all-optical modulation. Configurations combining PMMA rods with materials like black phosphorus have shown potential for responsive optical devices, including modulators and switches. Additionally, their lightweight and moldable properties make them ideal for innovative applications in automotive, aerospace, and biomedical engineering, driving advancements in materials research and development.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Polymers

Physical Properties

Element	Value
Abbe number	57.2
Flammability	HB
Radiation resistance	Fair
Refractive index	1.49
Resistance to Ultra-violet	Good
Limiting oxygen index( % )	17-20
Water absorption - over 24 hours( % )	0.2
Density( gcm⁻³ )	1.19

Chemical Resistance

Element	Value
Acids - concentrated	Good-Poor
Acids - dilute	Good-Poor
Alcohols	Good-Poor
Alkalis	Good
Aromatic hydrocarbons	Poor
Greases and Oils	Good
Halogenated Hydrocarbons	Poor
Halogens	Poor
Ketones	Poor

Electrical Properties

Element	Value
Dielectric constant @1MHz	2.6
Dissipation factor @ 1MHz	0.014
Dielectric strength( kV mm⁻¹ )	15
Surface resistivity( Ohm/sq )	10¹⁴
Volume resistivity( Ohmcm )	2-14 x 10¹⁵

Mechanical Properties

Element	Value
Hardness - Rockwell	M92-100
Poisson's ratio	0.35-0.4
Elongation at break( % )	2.5-4
Tensile modulus( GPa )	2.4-3.3
Izod impact strength( J m⁻¹ )	16-32
Tensile strength( MPa )	80

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	105
Heat-deflection temperature - 1.8MPa( C )	95
Lower working temperature( C )	-40
Upper working temperature( C )	50-90
Specific heat( J K⁻¹ kg⁻¹ )	1400-1500
Thermal conductivity( W m⁻¹ K⁻¹ )	0.17-0.19@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	70-77

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PMMA Rod

Tolerances

Material Properties for Polymers