Excellent Colorful Cast Pmma Board for City Light Sign
Property |
Unit |
Value |
|
Mechanical |
Specific Gravity |
-------- |
1.19-1.2 |
Rockwell Hardness |
kg/Cm2 |
M-100 |
|
Shear Strengh |
kg/Cm2 |
630 |
|
Rupture |
kg/Cm2 |
1050 |
|
Tensile Strength |
kg/Cm2 |
760 |
|
Yield |
kg/Cm2 |
1260 |
|
Impact Strength |
Cal/gr°C |
0.35 |
|
Thermal |
Specific heat |
Cal/xee/cm/°C/cm |
|
Thermal Seformation Temp |
°C |
100 |
|
Thermal Forming Temp |
°C |
140-180 |
|
Coefficient of Liner Thermal Expansion |
Cm/cm/°C |
6X10-5 |
|
Optical |
Light Transmittance |
% |
93 |
Refractive Index |
------- |
1.49 |
|
Electrical |
Dielectric Strength |
Kv/mm |
20 |
Surface Resistivity |
Ohm |
≥1016 |
|
other |
(Water(24hrs)Absorption |
% |
0.3 |
|
Taste
|
TASTE |
---------- |
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