Clarex® Precision Thin Sheet

•

•	Precision Thin Sheet	•	DR-I Diffusion Reflector
•	Non-Glare Sheet	•	DR-II Transmissive Diffusing Reflector
•	UV Cut Filter	•	DR-II EL Transmissive Diffusing Filter
•	UV Transmission Filter	•	DR-IIIC Light Diffusing Filter
•	NIR (Infra-Red) Filter	•	DR-IIIS Diffusing Filter
•	Anti-Bacteria Filter	•	DR-IV HSOT Light Scattering Panels & Shapes
•	AR (Anti-Reflective) Filter	•	Clarex Blue Ocean Front & Rear Projection Screens
•	AR & EMI Shield Filter	•	Clarex High-Temperature Acrylic Filters
•	Laser Scanner Filter	•	Clarex Low-Moisture Absorbing Filter
•	Light Guide Reflector	•	Clarex Permanent Anti-Fog Filter
•	Light Guide Panel

Home Page | Email Astra Products
Astra Products, Inc | Tel : (516) 546-4315 • Fax: (516) 868-2371

CLAREX® PRECISION THIN SHEET


	CLAREX® PRECISION THIN SHEET is Acrylic (Poly-Methyl Methacrylate) sheet which has excellent optical properties and is manufactured by a specialized cell-casting method.

FEATURES:

Smooth surface - roughness less than 0.02 µ
Excellent uniform thickness
Excellent smooth surface
High light transmission 92 - 94%
Isotropic transmission
No double refraction - no retardation
High molecular weight - > 2 million
Excellent optical characteristics
Excellent weatherability
Available scratch-resistant
Available in clear and many colors (standard colors)
Clear available 0.2mm thick and up
Colors available 0.5mm thick and up

Click here to see transmission and reflectance charts

AVAILABLE THICKNESSES and SIZES:

400mm x 550mm available in following thicknesses:
0.2mm, 0.3mm, 0.4mm. 0.5mm. 0.8mm

1000mm x 1000mm available in following thicknesses:
0.2mm, 0.3mm, 0.4mm. 0.5mm. 0.8mm, 1.0mm. 1.2mm, 1.5mm,
2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm and 5.0mm
(Please contact us if you require another thickness.)

SCRATCH RESISTANT (HARD COAT) GRADE:

Available one side scratch resistant (one side hard coat) and both sides scratch resistant.

APPLICATIONS:

Fresnel Lens, Dial Lens, Name Plate, Watch Cover, Architectural Models for Building, etc.

* Machining and printing available to customer specification. Contact Astra Products for details...

CLAREX PRECISION SHEET PHYSICAL PROPERTIES

PROPERTIES	METHOD	UNIT	Normal Grade	Hard Coat Grade
SPECIFIC GRAVITY	ASTM D-792		1.19	1.19
OPTICAL
Refractive Index	ASTM D-542		1.49	1.49 (1.54)
MECHANICAL
Elongation	ASTM D-638	%	5	5
Tensile Rupture Strength	ASTM D-638	kg/cm²	750	650
Flexural Rupture Strength	ASTM D-790	kg/cm²	1200	800
THERMAL
Heat Distortion Temperature	ASTM D-648	°C	110	110
Maximum recommended continuous temperature		°C	80	80
Coefficient of Thermal Expansion	ASTM D-696	cm/cm/°C	7 x 10^-5	7 x 10^-5
Specific Heat	ASTM D-638	cal/gr°C	0.35	0.35
DURABILITY
Hot Resistance	80°C x 100hr		No Change	No Change
Cold Resistance	-40°C x 100hr		No Change	No Change
Humid Resistance	60°Cx90%x100hr		No Change	No Change
Thermal Cycle	-40°C <-> 80°C (10 cycles)		No Change	No Change
ELECTRICAL
Surface Resistivity		W	>10¹⁶	>10¹⁶
PENCIL HARDNESS			2H	6~8H
CHEMICAL
Methyl Alcohol (50%)			No Change	No Change
Ethyl Alcohol (50%)			No Change	No Change
Soap Aqua Solution			No Change	No Change
Toluene			Dissolved	No Change
Acetone			Dissolved	No Change
Benzene			Swollen	No Change
Ethylene Dichloride			Dissolved	No Change
ADHESION	K-5400			100/100
FLAMMABILITY	UL standard	>=0.8mm Thickness	94HB	94HB

* Value provided cannot be guaranteed in your application due to circumstances beyond our control.

For more information concerning any of our products,
call us at (516) 546-4315 or fax to (516) 868-2371.
You may also email us or write to:
ASTRA PRODUCTS, INC · P.O. BOX 479 · BALDWIN, NY 11510 USA