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Master Bond adhesives

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Röhm Acrylite® 7H Acrylic Polymer  (discontinued **)
Categories: Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Optical Grade, Molded

Material Notes:

Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 1.19 g/ccASTM D792
Bulk Density 0.660 g/ccASTM D1895
Water Absorption <= 0.30 %ASTM D570
Linear Mold Shrinkage 0.0040 - 0.0070 cm/cmASTM D951
Melt Flow 1.3 g/10 min
@Load 3.80 kg,
Temperature 230 °C
ASTM D1238
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell M 94ASTM D785
Tensile Strength at Break 12950 psiASTM D638
Elongation at Break 4.0 - 6.0 %ASTM D638
Elongation at Yield 4.0 - 6.0 %ASTM D638
Tensile Modulus 530 ksiASTM D638
Flexural Strength 17970 psiASTM D790
Flexural Modulus 480 ksiASTM D790
Izod Impact, Notched 0.510 ft-lb/in
@Diameter 6.35 mm
BAR; ASTM D256
 
Thermal PropertiesOriginal ValueComments
CTE, linear 40.0 µin/in-°F
@Temperature 0.000 - 100 °C
ASTM D696
Deflection Temperature at 1.8 MPa (264 psi) 212 °F
@Thickness 6.35 mm
Annealed; ASTM D648
Vicat Softening Point 217 °FASTM D1525
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.49ASTM D542
Haze <= 1.0 %ASTM D1003
Yellow Index <= 1.0 %ASTM D1925
Transmission, Visible 92 %ASTM D1003
 
Processing PropertiesOriginal ValueComments
Middle Barrel Temperature 428 - 500 °FCylinder Temp
Melt Temperature 428 - 500 °F
Mold Temperature 90.0 - 175 °F
Drying Temperature 175 °F
Dry Time 3 - 4 hour

**
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PCYR00016 / 89020

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