Thickness analysis of chromium oxide passivation layer
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Thickness analysis of chromium oxide passivation layer This graph shows a significant increase in the thickness of the oxide film in this test. This chromium-rich film is not only stronger and deeper. The average thickness of the Stoffford product is 27.5 angstroms. In this test, the nitric acid only averaged 19 angstroms. |
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Product Description
PVDF rod with 20-150mm diameter
Description
PVDF has high strength, super chemical resistance, high temperature resistance, UV resistance. What's more, its dielectrical property is also very good. Compared with PTFE, it has higher surface hardness. The global production capacity of PVDF is only next to PTFE in the fluoropolymer family
Characteristics
-Excellent chemical resistance
-High toughness and rigidity
-Good dielectrical properties
-Good UV and radiation resistance
-Easy to machine
-Good sliding resistance,
-High wear resistance
-Nice dimensional stability
Applications
Silicon chip carrier
PVDF nozzle
Technical Data Sheet
PROPERTIES Test Method Unit Value
I.Physical Properties
Density ISO 1183 g/cm3 1.8
Water absorption 24hrs ISO 62 % <0.05
II.Thermal Properties
Heat deflection temperature - HDT/A ISO 75-2 ºC 104
Min. service temperature ºC -40
Max. service temperature-Long Term ºC 150
Thermal conductivity at 23 ºC DIN 11359 W/(K*m) 0.13
Coefficient of linear thermal expansion ISO 11359 10-4*K-1 0.2
Flammability Rating(6mm thickness) UL 94 - V-0
III.Mechanical Properties at 23ºC
Tensile strength at yield ISO 527-2 MPa 50
Tensile strength at break ISO 527-2 Mpa 46
Elongation at break ISO 527-2 % ≥50
Modulus of elasticity after tensile test ISO 527-2 MPa 2,000
Modulus of elasticity after flexural test ISO 178 MPa 2,000
Hardness - Shore D DIN 53505 78
Charpy impact strength ISO 179 kJ/m2 N. B.
Friction coefficient DIN 53375 0.33
IV.Electrical Properties at 23ºC
Dielectric constant at 1 MHz IEC 60250 106Hz 7.25
Dielectric loss factor at 1 MHz IEC 60250 106Hz 0.18
Volume resistively IEC 60093 Ohm (Ω) * cm ≥1013
Surface resisively IEC 60093 Ohm (Ω) ≥1014
Dielectric strength IEC 60243-1 kV/mm 22
NOTE: 1 g/cm3 = 1,000 kg/m3, 1 Mpa = 1 N/mm2, 1kV/mm = 1 MV/m
Statement:
Property data contained herein are typical values of resin for your reference and comparison purposes only. PRIOR will not provide any legally binding guarantee of certain properties, or any suitability.
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