PVDF

POLYVINYLYDENE DIFLUORIDE (PVDF)

PVDF is a high-crystal polymer, which unites superb chemical resistance with good mechanical, thermal and electric properties.

 

g16-300x200

PROPERTIES:

  • Superb chemical resistance to strong acids and bases as well as to hydrolysis,
  • good sliding properties and abrasion resistance
  • durability and creep resistance (better then other fluoropolymers
  • good insulating properties
  • exceptional resistance to UV radiation and other atmospheric factors
  • high load resistance also in low temperatures
  • high admissible working temperature (150°C),
  • physiologically harmless (admitted to direct contact with food),
  • good machinability and compression strength
  • very good dimensional stability,
  • low flammability

APPLICATION:

On account of its properties PVDF is widely used in various branches of industry such as petrochemical and chemical industry, food industry, paper industry, textile industry and nuclear industry. Hardness, rigidity and abrasion resistance are the most important properties of PVDF because of which it is often applied in transportation techniques, electrical engineering, laser engineering, solar installations, exhaust gas treatment, water supply systems, electronics, filters, and elements of safety equipment.
Examples of elements that can be manufactured from PVDF: agitator parts, elements of sliding container inserts, flanges, rollers, filtering sheets, seals, plugs, insulators or pipe installations.

TECHNICAL INFORMATION

Properties Unit PVDF
GENERAL PROPERTIES
Density G/cm3 1,79
Water absorption, saturation % 0,04
Hygroscopic rate, saturation 230 C % 0,04
MECHANICAL PROPERTIES
Tensile strength at yield N/mm2 50
Elongation at break % 20
Tensile modulus N/mm2 2000
Hardness H 961/30 N/mm2 80
Impact strength kJ/m2 No break
Notched impact KJ/m2 6
Time unit tensile(1% 1000h) N/mm2 3
THERMAL PROPERTIES
Thermal dimensional stability A (ISO-R 75) 0C 115
Thermal dimensional stability B (ISO-R 75) 0C 155
Upper temporary service temperature limit 0C 165
Upper permanent service temperature limit 0C 145
Melting point 0C 182
Linear thermal expansion coefficient 23-1000C 10ExpE5x1/K 12
Thermal conductivity(230C) W/Km 0,14
Fire class according to UL-Standard 94 V0
ELECTRICAL PROPERTIES
Dielectric constant 10E x p6 Hz 8
Volume resistivity 0Hm cm 10Exp 15
Dielectric strength kV/mm 60
Surface resistivity Ohm 10Exp 13
Dielectric dissipation factor 10E x p6 Hz 0,08
Rods PVDF
Density (g/cm3) 1,78
diameter mm Weight kg/m
10 0,15
20 0,6
30 1,3
25 0,92
40 2,32
50 3,62
60 5,19
70 7,04
80 9,22
100 14,42
110 17,47
125 22,6
140 28,33
150 32,6
165 39,4
200 57,9
250 90,1
Sheets PVDF
Dencity (g/cm3) 1,78
diameter mm Weight kg/m
10X500 9,7
15X500 14,6
20X500 19,18
25X500 23,75
30X500 28,9
40X500 38,1
50X500 47,3
60X500 56,85
70X500 66,7
80X500 75,9
90X500 85,1
100X500 94,2