Röhm ACRYMID® TT50 Poly(n-methyl methacrylimide (PMMI)

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Röhm ACRYMID® TT50 Poly(n-methyl methacrylimide (PMMI)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA)
Material Notes:	ACRYMID® TT50 is a highly heat distortion-resistant poly(n-methyl methacrylimide) (PMMI). Besides showing the properties common to all ACRYMID® molding compounds, such as high heat deflection temperature under load, excellent transmission and clarity, very high strength and rigidity, as well as good weather resistance. ACRYMID® TT50 is special in that it is listed by AMECA. Application: ACRYMID® molding compound is particularly suitable for injection molding of items meant for applications that involve high heat loads. Information provided by Roehm America LLC
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Physical Properties	Original Value	Comments

Specific Gravity	1.21 g/cc	ISO 1183
Melt Flow	5.0 g/10 min @Load 10.0 kg, Temperature 260 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	80.0 MPa	5 mm/min; ISO 527
Elongation at Break	3.0 %	5 mm/min; ISO 527
Tensile Modulus	4.00 GPa	1 mm/min; ISO 527
Charpy Impact Unnotched	20.0 kJ/m²	ISO 179/1eU

Thermal Properties	Original Value	Comments
CTE, linear	53.0 µm/m-°C @Temperature 0.000 - 50.0 °C	ISO 11359
Deflection Temperature at 0.46 MPa (66 psi)	146 °C	ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	142 °C	ISO 75
Vicat Softening Point	150 °C	B / 50; ISO 306
Glass Transition Temp, Tg	151 °C	ISO 11357
Flammability, UL94	HB @Thickness 1.50 mm	IEC 60695-11-10

Optical Properties	Original Value	Comments
Refractive Index	1.53 @Wavelength 589 nm	ISO 489
Transmission, Visible	>= 91 %	ISO 13468-2

Processing Properties	Original Value	Comments
Melt Temperature	250 - 280 °C
Mold Temperature	110 °C	Injection Molding
Drying Temperature	<= 100 °C	Predrying
Dry Time	2.00 - 3.00 hour	Predrying, Desiccant-Type Drier

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PROHM9333 / 319950

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