聚对苯二甲酸乙二醇酯,棒, Polyester, PET, PETP, Opaque White, 25mm直径

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品牌:	Goodfellow
产地:	英国

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Colour[颜色]	Opaque White
Diameter[直径]	25mm
Length[长度]	100 mm - 1000 mm
Structure[结构]	Semi Crystalline
Chemical Resistance(耐化学性)
Acids - concentrated	Good-Poor
Acids - dilute	Good
Alcohols	Good
Alkalis	Poor
Aromatic hydrocarbons	Good-Fair
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Fair-Poor
Ketones	Good-Fair
Electrical Properties(电气特性)
Dielectric constant @1MHz	3
Dielectric strength ( kV mm?? )	17.0
Dissipation factor @ 1kHz	0.0020
Surface resistivity ( Ohm/sq )	10??
Volume resistivity ( Ohmcm )	>10??
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	20.000 - 80.000
Heat-deflection temperature - 0.45MPa ( C )	115
Heat-deflection temperature - 1.8MPa ( C )	80.0
Lower working temperature ( C )	-40 - -60
Specific heat ( J K?? kg?? )	1200.0 - 1350.0
Thermal conductivity ( W m?? K?? )	0.15 - 0.40 @23℃
Upper working temperature ( C )	115 - 170
Physical Properties(物理性质)
Density ( g cm?? )	1.300 - 1.400
Flammability	HB
Limiting oxygen index ( % )	21
Radiation resistance	Good
Refractive index	1.580-1.640
Resistance to Ultra-violet	Fair
Water absorption - equilibrium ( % )	< 0.70
Water absorption - over 24 hours ( % )	0.100
Mechanical Properties(机械性能)
Coefficient of friction	0.20 - 0.40
Hardness - Rockwell	M94-101
Izod impact strength ( J m?? )	13.0 - - 35.0
Poisson's ratio	0.370 - 0.440
Tensile modulus ( GPa )	2.00 - 4.00
Tensile strength ( MPa )	80.00 , for biax film 190-260