Röhm Plexiglas® 8H PMMA Molding Compound

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Röhm Plexiglas® 8H PMMA Molding Compound
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, General Purpose, Molded
Material Notes:	Description: PLEXIGLAS® 7H and PLEXIGLAS® 8H are molding compounds based on polymethyl methacrylate (PMMA). The special properties of these standard PLEXIGLAS® molding compounds are: high melt strength high mechanical strength, surface hardness and abrasion resistance high light transmission excellent weather resistance free colorability due to crystal clarity The special properties of PLEXIGLAS® 8H compound are: optimum mechanical properties increased heat deflection temperature high melt strength AMECA listing. Application: Used for extruding optical and technical profiles and sheets Information provided by degussa. The former Evonik Methacrylates business has been sold to Röhm GmbH (Roehm).
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Physical Properties	Original Value	Comments

Density	1.19 g/cc	ISO 1183
Melt Flow	0.952 g/10 min @Load 3.80 kg, Temperature 230 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	78.0 MPa	5 mm/min; ISO 527
Elongation at Break	6.5 %	5 mm/min; ISO 527
Tensile Modulus	3.30 GPa	1 mm/min; ISO 527
Charpy Impact Unnotched	2.00 J/cm² @Temperature 23.0 °C	ISO 179

Thermal Properties	Original Value	Comments
CTE, linear	80.0 µm/m-°C @Temperature 0.000 - 50.0 °C	ASTM E831
Vicat Softening Point	108 °C	B50; ISO 306
Flammability, UL94	HB @Thickness 1.60 mm	IEC 707

Optical Properties	Original Value	Comments
Refractive Index	1.49	ISO 489
Transmission, Visible	92 %	Transmission Factor; DIN 5036

Processing Properties	Original Value	Comments
Processing Temperature	220 - 260 °C	Barrel Temperature
Die Temperature	428 - 500 °F
Melt Temperature	220 - 260 °C
Drying Temperature	<= 98.0 °C	Predrying
Dry Time	2 - 3 hour	Desiccant-type drier

Descriptive Properties
Fire Rating	B2	DIN 4102

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