Cellulose Propionate CP Material Information

Relatively lower plasticiser migration than Cellulose Acetate or Cellulose Acetate Butyrate. Stiffer than Cellulose Acetate or Cellulose Acetate Butyrate. Transparent and glossy with better low temperature impact properties Cellulose Acetate or Cellulose Acetate Butyrate.

Polymer Type

Thermoplastic

Advantages

Relatively lower plasticiser migration than Cellulose Acetate or Cellulose Acetate Butyrate. Stiffer than Cellulose Acetate or Cellulose Acetate Butyrate. Transparent and glossy with better low temperature impact properties Cellulose Acetate or Cellulose Acetate Butyrate.

Disadvantages

Lower weathering resistance than Cellulose Acetateor Cellulose Acetate Butyrate. More expensive than Cellulose Acetate or Cellulose Acetate Butyrate. Attacked by acids & alkalis and swollen by chlorinated and aromatic hydrocarbons, alcohols and ketones.

Typical Properties of CP

Property	Value
Density (g/cm3)	1.22
Surface Hardness	RR94
Tensile Strength (MPa)	35
Flexural Modulus (GPa)	1.76
Notched Izod (kJ/m)	0.13
Linear Expansion  (/°C x 10-5)	12
Elongation at Break (%)	60
Strain at Yield (%)	4
Max. Operating Temp. (°C)	60
Water Absorption (%)	1.8
Oxygen Index (%)	17
Flammability UL94	HB
Volume Resistivity (log ohm.cm)	12
Dielectric Strength (MV/m)	11
Dissipation Factor 1kHz	0.03
Dielectric Constant  1kHz	4
HDT @ 0.45 MPa (°C)	96
HDT @ 1.80 MPa (°C)	82
Material. Drying  hrs @ (°C)	2 @ 70
Melting Temp. Range (°C)	180 - 250
Mould Shrinkage (%)	0.5
Mould Temp. Range (°C)	40 -  50

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