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LG PMMA HI 855H

Polymethyl Methacrylate Acrylic

Supplied by LG MMA Corp.

The technical datasheet with complete property values for LG PMMA HI 855H is available to members of the Prospector Plastics Database.
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Product Description
PMMA is excellent in impact resistance compared to general glasses, but relatively lower among plastics so it is demanded to be improved in this respect. LG MMA has improved the impact resistance of PMMA using acrylic rubbers, and maintained the weatherability. Impact resistant grade of PMMA is applied to the area where impact strength is required such as signboards, lightings, displays, and vending machines.
General  
Material Status 
  • Commercial: Active
Availability 
  • Asia Pacific
  • Europe
  • North America
  • South America
  
Additive 
  • Rubber Impact Modifier
Features 
  • Good Weather Resistance
  • High Impact Resistance
  • Impact Modified
Uses 
  • Decorative Displays
  • Electronic Displays
  • Lighting Fixtures
Appearance 
  • Clear/Transparent
Forms 
  • Granules
Physical
Nominal Value
Unit
Test Method
Specific Gravity
 
 ASTM D792
Melt Mass-Flow Rate (MFR) (230°C/3.8 kg)
g/10 min
 ASTM D1238
Molding Shrinkage - Flow
in/in
 ASTM D955
Water Absorption (24 hr)
%
 ASTM D570
Mechanical
Nominal Value
Unit
Test Method
Tensile Strength (Yield)
psi
 ASTM D638
Tensile Elongation (Yield)
%
 ASTM D638
Flexural Modulus
psi
 ASTM D790
Flexural Strength (Yield)
psi
 ASTM D790
Impact
Nominal Value
Unit
Test Method
Notched Izod Impact
ft·lb/in
 ASTM D256
Hardness
Nominal Value
Unit
Test Method
Rockwell Hardness (M-Scale)
 
 ASTM D785
Thermal
Nominal Value
Unit
Test Method
Deflection Temperature Under Load (264 psi, Unannealed)
°F
 ASTM D648
Vicat Softening Temperature
°F
 ASTM D1525 2
CLTE - Flow
in/in/°F
 ASTM D696
Flammability
Nominal Value
Unit
Test Method
Flame Rating - UL
     UL 94
--
 
  
0.0591 in, All
 
  
UL File Number
 
  
UL
Nominal Value
Unit
Test Method
RTI Str (0.0591 in)
°F
 UL 746
RTI Imp (0.0591 in)
°F
 UL 746
RTI Elec (0.0591 in)
°F
 UL 746
Optical
Nominal Value
Unit
Test Method
Refractive Index
 
 ASTM D542
Transmittance (118 mil)
%
 ASTM D1003
Haze (118 mil)
%
 ASTM D1003
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: LG PMMA HI 855H, LG PMMA , LGPMMAHI855H, LGPMMA, PMMAHI 855 H, PMMAHI 855H, PMMAHI855, PMMA, HI 855 H, PMMAHI855H, HI 855H, HI855, 855H, HI855H, Acrylic, Acrylic, Polymethyl Methacrylate, Acrylic Polymethyl Methacrylate, Acrylic (PMMA), Acrylic PMMA, LG MMA, AcrylicPolymethylMethacrylate, AcrylicPMMA, 855HI, 855PMMAHI
Features
Features may also be described by the following terms: Good Weather Resistance, Weather Resistant, High Impact Resistance.
Uses
Uses may also be described by the following terms: Decorative Displays, Electronic Displays.
Injection
Nominal Value
Unit
 
Drying Temperature
°F
  
Drying Time
hr
  
Suggested Max Moisture
%
  
Rear Temperature
°F
  
Middle Temperature
°F
  
Front Temperature
°F
  
Mold Temperature
°F
  
Injection Pressure
psi
  
Notes
1Typical properties: these are not to be construed as specifications.
2Loading 1 (10 N)
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.