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Formula: CA
Form: Disk
Material: Cellulose acetate (CA)
CAS Number: 9004-35-7
Commodity: Polymers
Cellulose Acetate disks are a versatile product available in 119 variations that cover a wide range of diameters, thicknesses and tolerances. It is made from cellulose acetate which is a thermoplastic polymer derived from cellulose that exhibits high strength, toughness and optical clarity. Its durability, low cost and ease of fabrication make it ideal for applications ranging from scientific equipment to consumer goods. These disks can be machined, bonded or thermoformed for use as washers, spacers, lenses, windows, and other precision components across industrial, optical, and medical settings. With such a large range of options, Goodfellow's Cellulose Acetate disks enable you to select the optimal configuration for your specific application.
Tolerances
Disk
| Thickness | ±20% |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Good-Poor |
| Alcohols | Fair-Poor |
| Alkalis | Poor |
| Aromatic hydrocarbons | Good-Poor |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good-Poor |
| Halogens | Poor |
| Ketones | Poor |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | ~5 |
| Dissipation factor @ 1kHz | 0.06 |
| Dielectric strength( kV mm⁻¹ ) | 11 |
| Volume resistivity( Ohmcm ) | 5 x 10¹² |
Physical Properties
| Element | Value |
|---|---|
| Flammability | HB |
| Radiation resistance | Fair |
| Refractive index | 1.49 |
| Resistance to Ultra-violet | Fair |
| Limiting oxygen index( % ) | 19 |
| Water absorption - over 24 hours( % ) | 1.9-7 |
| Density( gcm⁻³ ) | 1.3 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Rockwell | 34-125 |
| Tensile modulus( GPa ) | 01-Apr |
| Izod impact strength( J m⁻¹ ) | 100-450 |
| Abrasive resistance - ASTM D1044( mg/1000 cycles ) | 65 |
| Tensile strength( MPa ) | 12-110 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 52-105 |
| Heat-deflection temperature - 1.8MPa( C ) | 48-86 |
| Lower working temperature( C ) | -20 |
| Upper working temperature( C ) | 55-95 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1200-1900 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.16-0.36@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 80-180 |
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PHB/PHV 8% Film Formula: PHB92/PHV 8
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PHB/PHV 1% Powder
Formula: Biopolymer
Maximum Particle Size: 300µm
Weight: 500g
Category: Green Production
Molecular Weight: 490k g/mol
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