Chi Mei Acryrex® CM-205G Optical Grade PMMA Resin

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Chi Mei Acryrex® CM-205G Optical Grade PMMA Resin
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Optical Grade, Molded
Material Notes:	Optical grade resin with low melt volume-flow rate. Applications: Widely used in optical extrusion applications. LGP raw material for 3D LCD TV and LCD monitor backlights. ACRYREX® Optical PMMA Resin is made with 99% methyl methacrylate (MMA) and 1% additives. It features good cleanliness, weather resistance, heat resistance, transparency, and gloss. It also exhibits stable physical, chemical, optical, and electrical properties. ACRYREX® Optical Grade PMMA Resin is widely used in the application of optical grade light guide plates, lighting signage, and backlight modules. Information provided by Chi Mei Corporation
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Physical Properties	Metric	English	Comments

Specific Gravity	1.19 g/cc	1.19 g/cc	ASTM D792
Water Absorption	0.30 % @Temperature 25.0 °C, Time 86400 sec	0.30 % @Temperature 77.0 °F, Time 24.0 hour	ASTM D570
Melt Flow	1.8 g/10 min @Load 3.80 kg, Temperature 230 °C	1.8 g/10 min @Load 8.38 lb, Temperature 446 °F	Cond. I; ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	97 @Thickness 6.35 mm	97 @Thickness 0.250 in	ASTM D785
Tensile Strength	70.6 MPa	10200 psi	1/8', 6mm/min; ASTM D638
Elongation at Break	5.0 %	5.0 %	1/8", 6mm/min; ASTM D638
Flexural Yield Strength	108 MPa	15600 psi	1/4", 2.8mm/min; ASTM D790
Izod Impact, Notched	0.196 J/cm @Thickness 6.35 mm	0.367 ft-lb/in @Thickness 0.250 in	ASTM D256

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	100 °C	212 °F	1/4", 120°C/hr; ASTM D648
Vicat Softening Point	113 °C	235 °F	1/8", 50°C/hr; ASTM D1525
Flammability, UL94	HB @Thickness 1.59 mm	HB @Thickness 0.0625 in

Optical Properties	Metric	English	Comments
UV Transmittance	92 % @Thickness 3.17 mm	92 % @Thickness 0.125 in	ASTM D1003

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PCHI9914 / 280799

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