Urea Formaldehyde - UF Urea Cellulose Filled

Aug 16 2001

Advantages

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

Disadvantages

Lower maximum operating temperature, worse dielectric constant, tracking resistance and dimensional stability compared with urea formaldehyde foam.

Typical Properties

Property

Value

Density (g/cm3)

1.47

Surface Hardness

RM115

Tensile Strength (MPa)

57

Flexural Modulus (GPa)

10

Notched Izod (kJ/m)

0.02

Linear Expansion (/°C x 10-5)

3

Elongation at Break (%)

0.8

Strain at Yield (%)

N/A

Max. Operating Temp. (°C)

75

Water Absorption (%)

0.6

Oxygen Index (%)

30

Flammability UL94

V0

Volume Resistivity (log ohm.cm)

12

Dielectric Strength (MV/m)

12

Dissipation Factor1kHz

0.04

Dielectric Constant  1kHz

7

HDT @ 0.45 MPa (°C)

260+

HDT @ 1.80 MPa (°C)

130

Material Drying  hrs @ °C

NA

Melting Temp. Range (°C)

95 - 105

Mould Shrinkage (%)

0.8

Mould Temp. Range (°C)

135 - 155

Applications

Electrical plugs and terminals, buttons, adhesives, binders, toilet seats, bottle caps, knobs and handles.

 

Source : Abstracted from Plascams

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

 

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