Cellulose acetate butyrate

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Cellulose Acetate Butyrate (CAB) is Thermoplastic

Contents 1 Properties 2 Advantages 3 Disadvantages 4 Applications

Properties

• Density (g/cm3) 1.18
• Surface Hardness RR69
• Tensile Strength (MPa)35
• Flexural Modulus (GPa)1.3
• Notched Izod (kJ/m) 0.26
• Linear Expansion (/°C x 10-5) 12
• Elongation at Break (%) 60
• Strain at Yield (%) 4
• Max. Operating Temp. (°C) 60
• Water Absorption (%) 1.3
• Oxygen Index (%)17
• Flammability UL94 HB
• Volume Resistivity (log ohm.cm) 11
• Dielectric Strength (MV/m)10
• Dissipation Factor 1kHz 0.04
• Dielectric Constant 1kHz 5
• HDT @ 0.45 MPa (°C) 73
• HDT @ 1.80 MPa (°C) 62
• Material. Drying hrs @ (°C) 2 @ 70
• Melting Temp. Range (°C) 170 - 240
• Mould Shrinkage (%) 0.5
• Mould Temp. Range (°C) 40 - 50

Advantages

Better weathering characteristics than Cellulose Acetate or Cellulose Propionate. Tougher than Cellulose Acetate. Lower moisture absorption than Cellulose Acetate. Transparent and glossy surface finish.

Disadvantages

Attacked or swollen by many solvents including chlorinated and aromatic hydrocarbons, alcohols and ketones. More expensive than Cellulose Acetate.

Applications

Tool handles, panels for illuminated signs, steering wheels, goggles, bathroom fittings, decorative trim for cars and consumer durables, drawing stencils, pens, pneumatic system traps, blister packaging, laminating with aluminium foil.