Röhm ACRYLITE PLUS® ZK-M Impact Acrylic Polymer

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Röhm ACRYLITE PLUS® ZK-M Impact Acrylic Polymer (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, General Purpose, Molded; Acrylic, Heat Resistant, Molded; Acrylic, Impact Modified, Molded
Material Notes:	ACRYLITE PLUS® ZK-M impact acrylic polymer is an amorphous, impact-modified thermoplastic molding and extrusion compound based on polymethyl methacrylate (PMMA). Typical properties of ACRYLITE PLUS® impact acrylic polymers are high weather resistance, high light transmission, improved resistance to stress cracking, good melt flow rate, and easy to color. The special properties of ACRYLITE PLUS ZK-M polymer are medium impact/break resistance and strength, low melt flow rate, high heat resistance, AMECA listed as ZKM (x), and FDA food contact use. Application: Used for injection molded parts. Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.
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Physical Properties	Original Value	Comments

Specific Gravity	1.18 g/cc	ASTM D792
Bulk Density	0.710 g/cc	ASTM D1895
Water Absorption at Saturation	0.30 %	ASTM D570
Linear Mold Shrinkage	0.0030 - 0.0060 in/in	ASTM D955
Melt Flow	3.5 g/10 min @Load 3.80 kg, Temperature 230 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell M	68	ASTM D785
Tensile Strength at Break	8500 psi	ASTM D638
Elongation at Break	30 %	ASTM D638
Elongation at Yield	5.0 %	ASTM D638
Tensile Modulus	320000 psi	ASTM D638
Flexural Strength	13000 psi	ASTM D790
Flexural Modulus	320000 psi	ASTM D790
Izod Impact, Notched	0.500 ft-lb/in @Temperature 0.000 °C	1/4" bar; ASTM D256
	0.850 ft-lb/in @Temperature 23.0 °C	1/4" bar; ASTM D256

Thermal Properties	Original Value	Comments
CTE, linear	40.0 µin/in-°F @Temperature 0.000 - 156 °C	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	196 °F @Thickness 6.35 mm	Annealed; ASTM D648
Vicat Softening Point	210 °F	ASTM D1525

Optical Properties	Original Value	Comments
Haze	<= 1.0 %	ASTM D1003
Yellow Index	<= 0.30 %	ASTM D1925
Transmission, Visible	91.5 %	ASTM D1003

Processing Properties	Original Value	Comments
Middle Barrel Temperature	450 - 480 °F
Melt Temperature	450 - 480 °F
Mold Temperature	110 - 180 °F
Drying Temperature	180 °F
Dry Time	3 - 4 hour

**
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PCYR00057 / 101046

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