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General Properties

CLAREX General Properties

Properties Test Method
(ASTM)
Unit Measurement Value
Uncoated
PMMA
Hard Coat
PMMA (RH)
Optical Properties
Refractive Index D-542 - 1.49 1.53
(Surface)
1.49
(Substrate)
Total Light Transmittance D-1003 “ 93 92
Haze D-1003 “ 0.1 0.1
Mechanical Properties
Elongation D-638 “ 5 3
Tensile Rupture Strength D-638 MPa 75 50
Flexural Rupture Strength D-790 MPa 118 60
Flexural Modulus D-790 MPa 3.2~103 3.2~103
Impact Strength (Izod) D-256 KJ/m2 2.0 -
Rockwell Hardness D-785 M scale 100 -
Charpy Impact Strength D-256 KJ/m2 17 -
Pencil Hardness - H 2`3 6`8
Thermal Properties
Heat Distortion Temperature D-648 Ž 110 110
Coefficient of Thermal Expansion D-696 cm/cmŽ 7~10-5 7~10-5
Coefficient of Thermal Conductivity C-177 W/mŽ 0.17 0.17
Electrical Properties
Volume Resistivity D-257 ƒΆEcm >1016 >1016
Surface Resistivity D-257 ƒΆ >1016 >1016
Miscellaneous
Specific Gravity D-792 - 1.19 1.19
Water Absorption D-570 “ 0.3 0.3

¦ These are the measured value of 3.0mm thickness sheet, and are not for guarantee.
¦ Specifications are subject to change at any time.

CLAREX Chemical Resistant

Test Method Put each chemicals on the surface and leave it for 24 hours. Check the deterioration / damage by naked eye.
Test Result @No Change observed
’@Small Swelling
~@Dissolved or Cracked

Properties Uncoated PMMA Hard Coat PMMA (RH)
Acid
Sulfuric Acid (30%)  
Sulfuric Acid (98%) ~ 
Hydrochloric Acid (10%)  
Hydrochloric Acid (35%)  
Nitric Acid (30%)  
Nitric Acid (60%) ’ 
Acetic Acid (5%)  
Acetic Acid (98%) ~ 
Oleic Acid  
Alkali
Aqueous Ammonia (10%)  
Sodium Hydroxide (20%)  
Sodium Carbonate (20%)  
Soap Water  
Organic Solvent
Methyl Alcohol (100%) ’ 
Isopropyl Alcohol (100%)  
Ethyl Alcohol (100%)  
Ethyl Acetate ~ 
Toluene ~ 
Acetone ~ 
Benzene ’ 
Methyl Ethyl Ketone ~ 
Kerosene  
N-hexane  
Glycerin  

¦ These are the measured value of 3.0mm thickness sheet, and are not for guarantee.
¦ Specifications are subject to change at any time.

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