Röhm PLEXIGLAS® Heatstop 8N black PMMA

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Röhm PLEXIGLAS® Heatstop 8N black PMMA (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA)
Material Notes:	Product Profile: PLEXIGLAS® Heatstop 8N black is an amorphous thermoplastic molding compound (PMMA). Typical properties of PLEXIGLAS® molding compounds are: good flow high mechanical strength, surface hardness and abrasion resistance very good weather resistance Special properties of PLEXIGLAS® Heatstop 8N black are: heat-reflection (IR) high total solar reflection (TSR), reflects 21% of the solar energy reduces the heat build-up of plastic parts, thus increases the dimension stability. Application: PLEXIGLAS® Heatstop 8N black is suitable for injection molding of technical components, as well as for extrusion/coextrusion. Owing to its superior brilliance, high-gloss (Class A) black surfaces can be obtained. The former Evonik Methacrylates business has been sold to Röhm GmbH (Roehm).
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Physical Properties	Metric	English	Comments

Density	1.19 g/cc	0.0430 lb/in³	ISO 1183
Melt Flow	3.0 g/10 min @Load 3.80 kg, Temperature 230 °C	3.0 g/10 min @Load 8.38 lb, Temperature 446 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	77.0 MPa	11200 psi	5 mm/min; ISO 527
Elongation at Break	5.5 %	5.5 %	5 mm/min; ISO 527
Tensile Modulus	3.30 GPa	479 ksi	ISO 527
Charpy Impact Unnotched	2.00 J/cm²	9.52 ft-lb/in²	ISO 179/1eU

Thermal Properties	Metric	English	Comments
CTE, linear	144 µm/m-°C @Temperature 0.000 - 50.0 °C	80.0 µin/in-°F @Temperature 32.0 - 122 °F	ISO 11359
Deflection Temperature at 0.46 MPa (66 psi)	103 °C	217 °F	ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	98.0 °C	208 °F	ISO 75
Vicat Softening Point	108 °C	226 °F	B/50; ISO 306
Glass Transition Temp, Tg	117 °C	243 °F	ISO 11357
Flammability, UL94	HB	HB	IEC 707

Processing Properties	Metric	English	Comments
Melt Temperature	220 - 260 °C	428 - 500 °F
Mold Temperature	60.0 - 90.0 °C	140 - 194 °F	Injection
Drying Temperature	<= 98.0 °C	<= 208 °F	Predrying
Dry Time	2.00 - 3.00 hour	2.00 - 3.00 hour	Predrying

**
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