聚醚酰亚胺,棒, PEI, Black, 12.3mm直径

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品牌:	Goodfellow
产地:	英国

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Colour[颜色]	Black
Description[描述]	Machining Feedstock
Diameter[直径]	12.3mm
Grade[等级]	Ultem? 1000-7107
Length[长度]	100mm - 1000mm
Electrical Properties(电气特性)
Dielectric constant @1kHz	3.10
Dielectric strength ( kV mm?? )	30.0 @1.6mm
Dissipation factor @ 1MHz	0.0013 @1
Surface resistivity ( Ohm/sq )	4x10??
Volume resistivity ( Ohmcm )	7.10??
Mechanical Properties(机械性能)
Abrasive resistance - ASTM D1044 ( mg/1000 cycles )	10
Compressive modulus ( GPa )	2.9
Elongation at break ( % )	60.0
Hardness - Rockwell	R125
Izod impact strength ( J m?? )	50.0
Poisson's ratio	0.440
Tensile modulus ( GPa )	2.90
Tensile strength ( MPa )	85.00
Physical Properties(物理性质)
Density ( g cm?? )	1.270
Flammability	V-0@0.4mm
Limiting oxygen index ( % )	47
Radiation resistance	Good
Resistance to Ultra-violet	Good-Fair
Water absorption - equilibrium ( % )	1.30
Water absorption - over 24 hours ( % )	0.250
Pultrusion(挤拉成型)
Compressive strength ( MPa )	140
Chemical Resistance(耐化学性)
Acids - concentrated	Good
Acids - dilute	Good
Alcohols	Good
Alkalis	Good-Poor
Aromatic hydrocarbons	Poor
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Ketones	Poor
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	56.000
Heat-deflection temperature - 0.45MPa ( C )	200
Heat-deflection temperature - 1.8MPa ( C )	190.0
Specific heat ( J K?? kg?? )	2000.0
Thermal conductivity ( W m?? K?? )	0.22 @23℃
Upper working temperature ( C )	170 - 200