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Grade: Unplasticized
Formula: UPVC
Form: Disk
Material: Polyvinyl Chloride (PVC)
CAS Number: 9002-86-2
Commodity: Polymers
Unplasticized PVC Disk provides high rigidity, low flammability, and chemical inertness, making it an excellent engineering polymer for structural and insulating applications. Unlike plasticized PVC, this unmodified form offers superior dimensional stability and resistance to creep. Industries such as electrical engineering, construction, and chemical processing rely on unplasticized PVC disks for insulators, corrosion-resistant components, and precision-engineered parts. Specific applications include gaskets in chemical apparatus, electrical insulating spacers, and laboratory test disks for solvent resistance studies. In research, unplasticized PVC disks are examined for their mechanical response under load, resistance to hydrocarbon solvents, and performance in high-voltage insulation. Their unique balance of rigidity, chemical durability, and electrical stability ensures a vital role in energy, chemical, and structural technology development.
Tolerances
Disc
| Thickness | ±20% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good-Poor |
| Acids - dilute | Good |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Poor |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Fair-Poor |
| Halogens | Fair |
| Ketones | Poor |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2.7-3.1 |
| Dissipation factor @ 1kHz | 0.025 |
| Dielectric strength( kV mm⁻¹ ) | 14 |
| Volume resistivity( Ohmcm ) | 10¹⁶ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | V0 |
| Radiation resistance | Fair |
| Refractive index | 1.54 |
| Resistance to Ultra-violet | Good |
| Limiting oxygen index( % ) | 42 |
| Water absorption - over 24 hours( % ) | 0.03-0.4 |
| Density( gcm⁻³ ) | 1.4 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Rockwell | R106-120 |
| Elongation at break( % ) | 60 |
| Tensile modulus( GPa ) | 2.5-4 |
| Izod impact strength( J m⁻¹ ) | 20-1000 |
| Tensile strength( MPa ) | 25-70 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 70 |
| Heat-deflection temperature - 1.8MPa( C ) | 67 |
| Lower working temperature( C ) | -30 |
| Upper working temperature( C ) | 50-75 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1000-1500 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.12-0.25@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 75-100 |