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Formula: PVDF
Form: Rod
Material: Polyvinylidene fluoride (PVDF)
CAS Number: 24937-79-9
Commodity: Polymers
PVDF Rod combines high mechanical strength, chemical resistance, and low moisture absorption in a solid cylindrical format ideal for machining into high-performance parts. Its stability under UV, radiation, and chemical attack ensures reliable operation in aggressive and outdoor environments. Industries use PVDF rods in precision pump components, insulators, and structural parts for chemical handling equipment. Specific applications include machining corrosion-resistant spindle shafts, fabricating dielectric supports in high-voltage systems, and producing durable marine hardware. In research, PVDF rods are utilized to create prototypes for chemical process equipment, assess machining performance of engineering polymers, and test piezoelectric transducer designs. The rod format’s structural integrity and machinability make it indispensable in demanding industrial and laboratory settings.
Tolerances
Rod
| Diameter | +20% / -10% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alcohols | Good |
| Alkalis | Fair |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good-Fair |
| Halogens | Good-Poor |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.2-0.4 |
| Hardness - Rockwell | R77-83 |
| Poisson's ratio | 0.34 |
| Elongation at break( % ) | 50 |
| Tensile modulus( GPa ) | 01-Mar |
| Izod impact strength( J m⁻¹ ) | 120-320 |
| Abrasive resistance - ASTM D1044( mg/1000 cycles ) | 24 |
| Tensile strength( MPa ) | 25-60 |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 8.4 |
| Dissipation factor @ 1kHz | 0.06 |
| Dielectric strength( kV mm⁻¹ ) | 13 |
| Surface resistivity( Ohm/sq ) | 10¹³ |
| Volume resistivity( Ohmcm ) | 10¹⁴ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | V0 |
| Radiation resistance | Fair |
| Refractive index | 1.42 |
| Resistance to Ultra-violet | Excellent |
| Limiting oxygen index( % ) | 44 |
| Water absorption - over 24 hours( % ) | 0.04 |
| Density( gcm⁻³ ) | 1.76 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 120-150 |
| Heat-deflection temperature - 1.8MPa( C ) | 80-115 |
| Lower working temperature( C ) | -40 |
| Upper working temperature( C ) | 135-150 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.1-0.25@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 80-140 |
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