Urea Formaldehyde - UF Urea Foam

Aug 16 2001

Advantages

Higher maximum operating temperature, better dielectric constant, tracking resistance and dimensional stability compared with cellulose filled urea formaldehyde.

Disadvantages

Lower HDT, tensile strength and flexural modulus; higher water absorption and mould shrinkage; lower surface hardness, elongation at break and volume resistance compared with cellulose filled urea formaldehyde.

Typical Properties

Property

Value

Density  (g/cm3)

0.01

Surface Hardness

SD50

Tensile Strength (MPa)

0.01

Flexural Modulus (GPa)

0.02

Notched Izod (kJ/m)

0.02

Linear Expansion (/°C x 10-5)

3

Elongation at Break (%)

0.2

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

90

Water Absorption (%)

20

Oxygen Index (%)

30

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

5

Dielectric Strength (MV/m)

10

Dissipation Factor1kHz

0.05

Dielectric Constant  1kHz

1.7

HDT @ 0.45 MPa (°C)

20-

HDT @ 1.80 MPa (°C)

75

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

NA

Mould Shrinkage (%)

3.5

Mould Temp. Range (°C)

NA

Applications

Flower arranging blocks, insulating panels.

 

Source : Abstracted from Plascams

For more information on Plascams please visit The Rubber and Plastics Research Association

 

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