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Master Bond adhesives

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MRC Polymers NAXALOY™ 780-11G PC + PBT Blend  (discontinued **)
Categories: Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate/Polybutylene Terephthalate (PBT) Blend, Unreinforced; Polyester, TP; Polybutylene Terephthalate (PBT)

Material Notes: Mechanical properties measured on 1/8 in. (3.2 mm) samples.

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Physical PropertiesOriginal ValueComments
Density 1.27 g/ccASTM D792
Linear Mold Shrinkage, Flow 0.0040 - 0.0060 cm/cmASTM D955
Melt Flow 16 g/10 minASTM D1238
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 80.0 MPaASTM D638
Flexural Strength 127 MPaASTM D790
Flexural Modulus 4.50 GPaASTM D790
Izod Impact, Notched (ISO) 0.800 J/cm²ISO 180
 
Thermal PropertiesOriginal ValueComments
Deflection Temperature at 0.46 MPa (66 psi) 108 °CASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 102 °CASTM D648
 
Processing PropertiesOriginal ValueComments
Processing Temperature 255 - 275 °C
Rear Barrel Temperature 240 - 270 °C
Middle Barrel Temperature 245 - 275 °C
Front Barrel Temperature 250 - 280 °C
Nozzle Temperature 245 - 275 °C
Mold Temperature 63.0 - 93.0 °C
Drying Temperature 107 - 113 °C
Dry Time 4 - 6 hour
Moisture Content <= 0.020 %
Dew Point <= 0.000 °F
Drying Air Flow Rate 0.800 - 1.00 ft³/min (CFM)per lb/hour or resin processes
Injection Pressure 5000 - 25000 psi
Back Pressure 0.000 - 75.0 psi
Shot Size 50 - 80 %
Vent Depth 0.000500 - 0.000800 in
Cushion 0.250 in
Screw Speed 50 - 80 rpm
 
Descriptive Properties
Fill RateModerate - Fast
Hold40 - 60% of injection pressure
Packing50 - 75% of injection pressure

**
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