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CLAREX®
PRECISION THIN SHEET
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CLAREX® PRECISION THIN SHEET is Acrylic (Poly-Methyl
Methacrylate) sheet which has excellent optical properties
and is manufactured by a specialized cell-casting
method. |
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| FEATURES:
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- Excellent
uniform thickness.
- Excellent
smooth surface.
- High
transmission.
- No
double refraction.
- Excellent
optical characteristics.
- Excellent
weatherability.
- Available
scratch-resistant.
Available in any colour. (see standard
colours)
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| AVAILABLE
THICKNESS: |
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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.)
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| AVAILABLE
SIZE: |
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400
x 550mm and 1000 x 1000mm
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| SCRATCH
RESISTANT (HARD COAT) GRADE: |
| Available
one side scratch resistant (one side hard coat) and both sides
scratch resistant. |
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| APPLICATIONS:
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Fresnel
Lens, Dial Lens, Name Plate, Watch Cover, Miniature
Models for Building, etc.
* Machining
and printing available to customer specification.
Contact Astra Products for details...
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| CLAREX®
PRECISION SHEET PHYSICAL PROPERTIES |
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| 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 |
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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%) |
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|
No
Change |
No
Change |
| Ethyl
Alcohol (50%) |
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|
No
Change |
No
Change |
| Soap Aqua
Solution |
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|
No
Change |
No
Change |
| Toluene |
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|
Dissolved |
No
Change |
| Acetone |
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|
Dissolved |
No
Change |
| Benzene |
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|
Swollen |
No
Change |
| Ethylene
Dichloride |
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|
Dissolved |
No
Change |
| ADHESION |
K-5400 |
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|
100/100 |
| FLAMMABILITY |
UL
standard |
>=0.8mm
Thickness |
94HB |
94HB |
*
Value provided cannot be guaranteed in your application due
to circumstances beyond our control.
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