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PBT 6000 耐低温撞击

添加时间:2013-05-29  信息来源:http://www.simibc.com/  作者:苏州希普能塑料
泰科纳PBT 6000
 
VANDAR® 6000 MF3001 NATURAL
 
VANDAR 6000 | PBT | Unfilled
 
Description
Vandar 6000 is a toughened polyester alloy with excellent cold temperature impact resistance.
 
Other Processing
Injection Molding
Rear Temperature    470-490(240-255) deg F (deg C)
Center Temperature  480-500(250-260) deg F (deg C)
Front Temperature   490-510(255-265) deg F (deg C)
Nozzle Temperature  500-520(260-270) deg F (deg C)
Melt Temperature    500-540(260-280) deg F (deg C)
Mold Temperature    100-250(40-120)  deg F (deg C)
Back Pressure       0-100            psi
Screw Speed         60-125           rpm
Injection Speed     Medium/Fast
 
Injection speed, injection pressure and holding pressure have to be optimized to the individual article geometry. To avoid material degradation during processing low back pressure and minimum screw speed have to be used. Overheating of the material has to be avoided, in particular for flame retardant grades. Up to 25% clean and dry regrind may be used.
 
ISO Data Mechanical properties Value Unit Test Standard
Phys Density 1200 kg/m³ ISO 1183
Mold shrinkage - parallel 0.5-0.9 % ISO 294-4
Mold shrinkage - normal 0.5-0.9 % ISO 294-4
Mech Mechanical properties Value Unit Test Standard
Tensile modulus (1mm/min) 1750 MPa ISO 527-2/1A
Tensile stress at yield (50mm/min) 45 MPa ISO 527-2/1A
Tensile strain at yield (50mm/min) 4.5 % ISO 527-2/1A
Nominal strain at break (50mm/min) >50 % ISO 527-2/1A
Tensile stress at 50% strain (50mm/min) 35 MPa ISO 527-2/1A
Flexural modulus (23℃) 1600 MPa ISO 178
Flexural strength (23℃) 55 MPa ISO 178
Notched impact strength (Izod) @ 23℃ 56P kJ/m² ISO 180/1A
Therm Thermal properties Value Unit Test Standard
Glass transition temperature (10℃/min) 78 ISO 11357-1,-2,-3
DTUL @ 1.8 MPa 74 ISO 75-1/-2
DTUL @ 0.45 MPa 106 ISO 75-1/-2
Coeff.of linear therm. expansion (parallel) 0.9 E-4/℃ ISO 11359-2
SpecProd Test specimen production Value Unit Test Standard
Processing conditions acc. ISO 7792-2 - Internal
Injection molding melt temperature 260 ISO 294
Injection molding mold temperature 82 ISO 294
Injection molding flow front velocity 300 mm/s ISO 294
Injection molding hold pressure 86 MPa ISO 294
 
Processing
Pre Drying
Necessary low maximum residual moisture content: 0.02%
 
To avoid hydrolytic degradation during processing, Vandar resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-40℉ (-40℃) at 250℉ (121℃) for 4 hours.
 
For subsequent storage of the material in the dryer until processed (<= 60 h) it is necessary to lower the temperature to 100℃.
 
Drying time (h):4
Drying temperature (℃):120 - 130
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