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PBT 4302 含30%玻纤增强,抗弯曲

添加时间:2013-05-28  信息来源:http://www.simibc.com/  作者:苏州希普能塑料
泰科纳PBT 4302
 
CELANEX® 4302 EC3638 GRAY
CELANEX® 4302 EC4405 RALLY CHARCOAL 96
CELANEX® 4302 ED3002 BLACK
CELANEX® 4302 EF3001 NATURAL
 
CELANEX 4302 | PBT | Glass Reinforced
 
Description
Celanex 4302 is a 30% glass reinforced PBT designed for improved mold flow, warp resistance and surface appearance.
 
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 1490 kg/m³ ISO 1183
Mold shrinkage - parallel 0.2-0.4 % ISO 294-4
Mold shrinkage - normal 0.4-0.6 % ISO 294-4
Humidity absorption (23℃/50%RH) 0.15 % ISO 62
Mech Mechanical properties Value Unit Test Standard
Tensile modulus (1mm/min) 8900 MPa ISO 527-2/1A
Tensile stress at break (5mm/min) 120 MPa ISO 527-2/1A
Tensile strain at break (5mm/min) 2.8 % ISO 527-2/1A
Flexural modulus (23℃) 8700 MPa ISO 178
Flexural strength (23℃) 190 MPa ISO 178
Charpy impact strength @ 23℃ 56 kJ/m² ISO 179/1eU
Charpy impact strength @ -30℃ 41 kJ/m² ISO 179/1eU
Charpy notched impact strength @ 23℃ 9.9 kJ/m² ISO 179/1eA
Charpy notched impact strength @ -30℃ 8.3 kJ/m² ISO 179/1eA
Notched impact strength (Izod) @ 23℃ 13.9 kJ/m² ISO 180/1A
Therm Thermal properties Value Unit Test Standard
Melting temperature (10℃/min) 225 ISO 11357-1,-2,-3
Glass transition temperature (10℃/min) 55 ISO 11357-1,-2,-3
DTUL @ 1.8 MPa 173 ISO 75-1/-2
DTUL @ 0.45 MPa 218 ISO 75-1/-2
Coeff.of linear therm. expansion (parallel) 0.18 E-4/℃ ISO 11359-2
Coeff.of linear therm. expansion (normal) 1.25 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 48 MPa ISO 294
 
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℃.
 
Drying time (h):4
Drying temperature (℃):120 - 130
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