CLAREX® Optical Quality Cell Cast Acrylic Precision Thin Sheet

The base substrate for almost all of the other products we offer!


CLAREX® Cell Cast Sheet combines many desirable features.

CLAREX® PRECISION THIN SHEET – (poly-methyl methacrylate) affords unsurpassed optical properties, excellent uniform thickness (from .008 inch) and surface smoothness with high transmission rates and minimum optical distortion. Several surface options are available.

See Transmission and Reflectance Charts

APPLICATIONS – LCD protective windows, camera and lens covers, sensor & light filters, architectural models, microfluidics substrate, and more.

THICKNESS – 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 1.0 | 1.2 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0mm.
Ultra thin sheets are available. Thicknesses as low as 0.008". We can also produce 0.004” as special order.

SIZE – 400mm x 550mm is standard. For clear uncoated glossy sheets 0.5mm and greater, our standard size is 500mm x 500mm. Please contact us to discuss custom sheet size options.

MACHINING / PRINTING - Available to customer specification.

COLORS – Many colors, clears and neutral grays are available. See standard colors.
Clear available 0.2mm thick and up. Colors available 0.5mm thick and up.
If we don’t already have the color you need in our portfolio, we offer color-matching service as well.

COATINGS – Scratch Resistant (Hard Coat) 6H-8H Pencil Hardness – available one side scratch-resistant and both sides scratch-resistant.
Super-hardcoat (9H) also available.
Contact us for custom tuned antireflection coatings!

SURFACES – Multiple nonglare textures (not a coating) available one or both sides. See “nonglare” options. Available one or both sides in any combination.

SPECIAL FORMULATIONS – The standard formulation can be modified for sheets which can withstand higher operating temperatures, and/or sheets that absorb less moisture.

FEATURES

  • Smooth surface - roughness less than 0.02 µ
  • Excellent uniform thickness
  • High light transmission 92 - 94%
  • Isotropic transmission
  • No double refraction - no retardation
  • Virtually no autofluorescence
  • High molecular weight - 2+ million
  • Excellent optical characteristics
  • Excellent weatherability
PROPERTIES
PROPERTY METHOD UNIT NORMAL HARDCOAT
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
Available with higher temperature ratings on request, 90-95ºC
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°C x 90% x 100hr   No Change No Change
Thermal Cycle -40°C <-> 80°C
(10 cycles)
  No Change No Change
ELECTRICAL
Surface Resistivity   W >1016 >1016
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
+
PENCIL HARDNESS     2H 6~8H
ADHESION K-5400     100/100
FLAMMABILITY UL standard >=0.8mm
Thickness
94HB 94HB