PMMA Granules

PMMA Granules are part of our wide range of engineering materials. A polymer material, they come in 14 different variations that can be customized for properties like impact strength, hardness and UV resistance. PMMA Granules are widely used in applications like protective screens, lenses and transparent armor due to their lightweight and shatter-resistant properties. With an extensive range of granules to choose from, you can select the optimal grade for your specific application.

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Properties

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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 Granules

Material Properties for Polymers