Röhm PLEXIGLAS® Softlight 7H df21 PMMA

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Röhm PLEXIGLAS® Softlight 7H df21 PMMA
Categories:	Polymer; Thermoplastic; Acrylic (PMMA)
Material Notes:	PLEXIGLAS® Softlight 7H df21, based on PLEXIGLAS® 7H, is characterized by diffuse scattering of light. Typical properties of PLEXIGLAS® molding compound are good flow high mechanical strength, surface hardness and mar resistance very good weather resistance. Special properties of PLEXIGLAS® Softlight 7H df21 are very good light diffusion combined with excellent light transmittance matte surfaces can be obtained by varying the extrusion parameters Application: Used for extruding profiles and sheets for lighting engineering applications Information provided by Roehm America LLC
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Physical Properties	Original Value	Comments

Specific Gravity	1.19 g/cc	ISO 1183
Melt Flow	1.1 g/10 min @Load 3.80 kg, Temperature 230 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	70.0 MPa	5 mm/min; ISO 527
Elongation at Break	5.5 %	5 mm/min; ISO 527
Tensile Modulus	3.30 GPa	1 mm/min; ISO 527
Charpy Impact Unnotched	20.0 kJ/m²	ISO 179/1eU
Charpy Impact, Notched	1.80 kJ/m²	ISO 179/1

Thermal Properties	Original Value	Comments
CTE, linear	6.30 µm/m-°C @Temperature 0.000 - 50.0 °C	ISO 11359
Deflection Temperature at 0.46 MPa (66 psi)	101 °C	ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	97.0 °C	ISO 75
Vicat Softening Point	104 °C	B / 50; ISO 306
Glass Transition Temp, Tg	110 °C	ISO 11357

Optical Properties	Original Value	Comments
Transmission, Visible	87 %	ISO 13468-2

Processing Properties	Original Value	Comments
Die Temperature	220 - 260 °C	Extrusion
Melt Temperature	220 - 260 °C
Drying Temperature	<= 95.0 °C	Predrying
Dry Time	2.00 - 3.00 hour	Predrying, Desiccant-Type Drier

Descriptive Properties
Half-Value Angle	5.4°	DIN 5036

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PROHM9362 / 319979

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