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PBT 2003HR 耐水解,水解稳定

添加时间:2013-05-23  信息来源:http://www.simibc.com/  作者:苏州希普能塑料
泰科纳PBT 2003HR
 
CELANEX® 2003 HR EF3001 NATURAL
CELANEX® 2003HR ED3002 BLACK
 
CELANEX 2003HR | PBT | Unfilled
 
Description
Celanex 2003HR is an unfilled polybutylene terephthalate which has an excellent hydrolysis resistance, mechanical properties and processability
 
Other Processing
Injection Molding
Rear Temperature    450-470(230-240) deg F (deg C)
Center Temperature  460-480(235-250) deg F (deg C)
Front Temperature   470-500(240-260) deg F (deg C)
Nozzle Temperature  480-500(250-260) deg F (deg C)
Melt Temperature    460-500(235-260) deg F (deg C)
Mold Temperature    150-200(65-93)   deg F (deg C)
Back Pressure       0-50             psi
Screw Speed         Medium
Injection Speed     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 Physical properties Value Unit Test Standard
Phys Density 1310 kg/m³ ISO 1183
Melt volume rate (MVR) 20 cm³/10min ISO 1133
MVR test temperature 250 ISO 1133
MVR test load 2.16 kg ISO 1133
Humidity absorption (23℃/50%RH) 0.25 % ISO 62
Mech Mechanical properties Value Unit Test Standard
Tensile modulus (1mm/min) 2500 MPa ISO 527-2/1A
Tensile stress at yield (50mm/min) 60 MPa ISO 527-2/1A
Tensile strain at yield (50mm/min) 4 % ISO 527-2/1A
Tensile strain at break (50mm/min) >50 % ISO 527-2/1A
Flexural modulus (23℃) 2500 MPa ISO 178
Flexural strength (23℃) 80 MPa ISO 178
Charpy impact strength @ 23℃ NB kJ/m² ISO 179/1eU
Charpy impact strength @ -30℃ 190 kJ/m² ISO 179/1eU
Charpy notched impact strength @ 23℃ 6 kJ/m² ISO 179/1eA
Charpy notched impact strength @ -30℃ 6 kJ/m² ISO 179/1eA
Notched impact strength (Izod) @ 23℃ 5.5 kJ/m² ISO 180/1A
Notched impact strength (Izod) @-30℃ 5.5 kJ/m² ISO 180/1A
Therm Thermal properties Value Unit Test Standard
DTUL @ 1.8 MPa 55 ISO 75-1/-2
DTUL @ 0.45 MPa 150 ISO 75-1/-2
Vicat softening temperature B50 (50℃/h 50N) 190 ISO 306
Coeff.of linear therm. expansion (parallel) 1.3 E-4/℃ ISO 11359-2
Coeff.of linear therm. expansion (normal) 1.2 E-4/℃ ISO 11359-2
Elec Electrical properties Value Unit Test Standard
Relative permittivity - 1 MHz 3.2 - IEC 60250
Dissipation factor - 1 MHz 200 E-4 IEC 60250
Volume resistivity >1E13 Ohm*m IEC 60093
Surface resistivity >1E15 Ohm IEC 60093
Electric strength 15 kV/mm IEC 60243-1
Comparative tracking index CTI 600 - IEC 60112
 
Processing
Pre Drying
Necessary low maximum residual moisture content: 0.02%
 
To avoid hydrolytic degradation during processing, CELANEX 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° C.
 
Drying time (h):4
Drying temperature (℃):120 - 130
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