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Plexiglas® Heatresist hw55

Category:	Acrylic (PMMA) , Polymethyl Methacrylate Acrylic
Manufacturer:	Evonik Industries AG
Trademark:	Plexiglas®
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	tR4Glo_Plexiglas-Heatresist-hw55.pdf
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Product Profile:
PLEXIGLAS® Heatresist hw55 clear is a copolymer based on methyl methacrylate (MMA) with comonomer constituents.

Besides showing the familiar properties of standard PLEXIGLAS® molding compound, such as

high light transmission,

good flowability,

high mechanical strength, surface hardness and abrasion resistance, as well as

excellent weatherability,

PLEXIGLAS® Heatresist hw55 clear offers the additional benefits of

increased heat deflection temperature under load and

improved resistance to stress cacking

optimised inherent color,

AMECA listing.

Application:
PLEXIGLAS® Heatresist hw55 clear is particularly suitable for injection molding of technical items.

Examples:
lighted keys, luminaire covers, fiber optics.

General Information
Features	Copolymer Good Colorability Good Flow Good Weather Resistance High ESCR (Stress Crack Resist.) High Hardness High Strength
Uses	Fibers Optical Applications Protective Coverings
Appearance	Clear/Transparent
Forms	Pellets
Processing Method	Injection Molding
Multi-Point Data	Isothermal Stress vs. Strain (ISO 11403-1) Secant Modulus vs. Strain (ISO 11403-1) Shear Modulus vs. Temperature (ISO 11403-1) Viscosity vs. Shear Rate (ISO 11403-2)

Physical	Nominal Value	Unit	Test Method
Density	1.19	g/cm³	ISO 1183
Melt Volume-Flow Rate (MVR) (230°C/3.8 kg)	1.20	cm³/10min	ISO 1133
Water Absorption			ISO 62
23°C, 24 hr	2.2	%
Equilibrium, 23°C, 50% RH	0.60	%

Mechanical	Nominal Value	Unit	Test Method
Tensile Modulus	3600	MPa	ISO 527-2/1
Tensile Stress (Break)	80.0	MPa	ISO 527-2/5
Tensile Strain (Break)	3.5	%	ISO 527-2/5

Impact	Nominal Value	Unit	Test Method
Charpy Unnotched Impact Strength (23°C)	20	kJ/m²	ISO 179/1eU

Thermal	Nominal Value	Unit	Test Method
Heat Deflection Temperature
0.45 MPa, Unannealed	109	°C	ISO 75-2/B
1.8 MPa, Unannealed	106	°C	ISO 75-2/A
Glass Transition Temperature	122	°C	ISO 11357-2
Vicat Softening Temperature	119	°C	ISO 306/B50
CLTE - Flow (0 to 50°C)	7.0E-5	cm/cm/°C	ISO 11359-2

Flammability	Nominal Value		Test Method
Flame Rating (1.60 mm)	HB		UL 94

Optical	Nominal Value	Unit	Test Method
Refractive Index	1.510		ISO 489
Transmittance ¹	90.0	%	ISO 13468-2

Injection	Nominal Value	Unit
Drying Temperature	< 109	°C
Drying Time	2.0 to 3.0	hr
Processing (Melt) Temp	220 to 250	°C
Mold Temperature	60.0 to 90.0	°C

Note Message
1 .	D65

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