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celanex® 2500 10/9102
celanex® 2500 20/0184
celanex® 2500 20/0186
celanex® 2500 20/0644
celanex® 2500 20/2135
celanex® 2500 20/4089
celanex® 2500 20/4115
celanex® 2500 20/4116
celanex® 2500 30/2251
celanex® 2500 40/4118
celanex® 2500 50/9103
celanex® 2500 60/0176
celanex® 2500 70/4119
celanex® 2500 natural
celanex 2500 | pbt | unfilled
description
chemical abbreviation according to iso 1043-1: pbt moulding compound iso 7792- pbt, mghr, 08-030n
polybutylene terephthalate, easy flow, nucleated grade flammability ul 94 hb minimum thickness 1.0 mm. recognition by underwriters laboratories, usa (ul)
other processing
injection molding
melt temperature 250-260 ℃
mold temperature 75-85 ℃
maximum barrel residence time *) 5-10 min
injection speed fast
peripheral screw speed max.0,3 m/sec
back pressure 10-30 bar
injection pressure 600-1000 bar
holding pressure 400-800 bar
nozzle design open design preferred
injection speed, injection pressure and holding pressure have to be optimized to the inpidual 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. for grades containing flame retardants, a maximum temperature of 265℃ should not be exceeded.
ticona recommends only externally heated hot runner systems.
*) if the cylinder temperatures are higher than the recommended maximum temperatures, the max. residence time in the barrel has to be reduced.
iso data physical properties value unit test standard
phys density 1310 kg/m³ iso 1183
melt volume rate (mvr) 40 cm³/10min iso 1133
mvr test temperature 250 ℃ iso 1133
mvr test load 2.16 kg iso 1133
mold shrinkage - parallel 1.8 to 2.0 % iso 294-4
humidity absorption (23℃/50%rh) 0.2 % iso 62
mech mechanical properties value unit test standard
tensile modulus (1mm/min) 2700 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
nominal strain at break (50mm/min) 15 % iso 527-2/1a
tensile stress at break (50mm/min) 60 mpa iso 527-2/1a
tensile creep modulus (1h) 2400 mpa iso 899-1
tensile creep modulus (1000h) 1600 mpa iso 899-1
flexural strength (23℃) 90 mpa iso 178
charpy impact strength @ 23℃ 135 kj/m² iso 179/1eu
charpy impact strength @ -30℃ 130 kj/m² iso 179/1eu
charpy notched impact strength @ 23℃ 5 kj/m² iso 179/1ea
charpy notched impact strength @ -30℃ 4.5 kj/m² iso 179/1ea
therm thermal properties value unit test standard
melting temperature (10℃/min) 225 ℃ iso 11357-1,-2,-3
dtul @ 1.8 mpa 60 ℃ iso 75-1/-2
dtul @ 0.45 mpa 160 ℃ iso 75-1/-2
vicat softening temperature b50 (50℃/h 50n) 190 ℃ iso 306
coeff.of linear therm. expansion (parallel) 1.1 e-4/℃ iso 11359-2
limiting oxygen index (loi) 22 % iso 4589
flammability @1.6mm nom. thickn. hb class ul94
thickness tested (1.6) 1.49 mm ul94
ul recognition (1.6) ul - ul94
flammability at thickness h hb class ul94
thickness tested (h) 1 mm ul94
ul recognition (h) ul - ul94
elec electrical properties value unit test standard
relative permittivity - 100 hz 3.9 - iec 60250
relative permittivity - 1 mhz 3.8 - iec 60250
dissipation factor - 100 hz 13 e-4 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 23 kv/mm iec 60243-1
comparative tracking index cti 600 - iec 60112
specprod test specimen production value unit test standard
processing conditions acc. iso 7792 - internal
injection molding melt temperature 265 ℃ iso 294
injection molding mold temperature 80 ℃ iso 294
injection molding flow front velocity 200 mm/s iso 294
injection molding hold pressure 70 mpa iso 294
rheo rheological calculation properties value unit test standard
density of melt 1110 kg/m³ internal
thermal conductivity of melt 0.133 w/(m k) internal
specific heat capacity of melt 1920 j/(kg k) internal
ejection temperature 219 ℃ internal
processing
pre drying
necessary low maximum residual moisture content: 0.02%
celanex should in principle be predried. because of the necessary low maximum residual moisture content the use of dry air dryers is recommended. the dew point should be =< - 30℃. the time between drying and processing should be as short as possible.
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):2-4
drying temperature (℃):120-140
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东莞市乐泰塑胶原料有限公司
陈雪锋
13538676616
樟木头塑胶物流中心城E88号