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1.Introduction:
PMMA resin is a mature product. It has excellent weather-resist and heat-resist character, and excellent transparency and gloss. Besides, it has stable physical, chemical, optical, and electrical,etc., characters. It may be widely applied on electronic panel, mechanical parts, watch and clock shell, motorcycle and automobile indicator, tele communication material, insulation parts and sun glasses, etc
2.Application:
1.Construction: show window, doors, light-absorpting shade, telephone booth.
2.Advertisement: lamphouse,signboard,indicator,display rack.
3.vehicle: door and window of car and train.
4.Medical: infant incubator, many kinds of medical apparatus.
5.Civilian goods: bath room, art work, cosmetics, bracket.
6.Industrial: instruments and meters and protecting cover.
7.Lighting: daylight lamp, ceiling lamp,lamp shade
3.Property:
|
Property item
|
Test method
|
Test number
|
units
|
|
Basic properties
|
hardness
|
ASTM D-785
|
M-95
|
|
|
Bulk Density
|
ASTM D-1182
|
0.77
|
gm/cm3
|
|
Water Absorption
|
ASTM D-570
|
0.3
|
%
|
|
Physical properties
|
Specific Gravity
|
ASTM D-792
|
1.19
|
|
|
Light transmission
|
ASTM D-1003
|
92
|
%
|
|
Melt Flow Index
|
ASTM D-1238
|
1.8
|
gm/10min
|
|
Flammability
|
|
1/16"HB
|
UL-94
|
|
Mould Shrinkage
|
ASTM D-955
|
0.002-0.006
|
mm/mm
|
|
Mechanical properties
|
Impact Notched IZOD
|
ASTM D-256
|
2.0
|
kg-cm/cm
|
|
Tensile Strength
|
ASTM D-638/PSI
|
10200/720
|
Kg/cm2
|
|
Flexural Strength
|
ASTM D-790/PSI
|
15600/1100
|
Kg/cm2
|
|
Tensile Elongation
|
ASTM D-638
|
5.0
|
%
|
|
Refractive index
|
ASTM D-542
|
1.491
|
|
|
Dielectric strength
|
ASTM D-149
|
500
|
Volts/Mil
|
|
Impact notched IZOD
|
ASTM D-256
|
0.37
|
ft-lbs/in2
|
|
Electrical Properties
|
Volume Resistivity
|
ASTM D-257
|
1015
|
Ω.m
|
|
Loss Factor
|
ASTM D-150
|
0.19
|
|
|
Dielectric Constant
|
ASTM D-150-647b
|
3.7
|
|
|
Power Factor
|
ASTM D-150-647
|
0.5
|
|
|
Thermal Properties
|
Heat Distortion Temp
|
ASTM D-648
|
100/212
|
°C/°F
|
|
Vicat Softening Point
|
ASTM D-648
|
113/235
|
°C/°F
|
