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Kite Brand TUFNOL

Phenolic Paper laminate

Paper/phenolic resin laminated plastic

(SRBP - Synthetic Resin Bonded Paper)


First class electrical insulation

Kite Brand TUFNOL is a first class electrical insulating materials with good dielectric strength and high insulation resistance.  It has low moisture absorption and good mechanical strength, although its impact strength is lower than that of most other grades of Tufnol.   Kite Brand sheet meets British Standard BS EN 60893-3-4 Type PF CP 206. It is readily machined and can be hot punched in thicknesses up to 3.2mm.


What is Kite Brand used for?

Kite Brand is the most widely used of all TUFNOL phenolic paper grades, wherever a good quality general purpose electrical insulation material is required. It is used for a multitude of different applications at low, medium and high voltages, including such items as terminal boards, mounting panels, tag strips, coil formers, insulating sleeves and bushes, busbar supports, tool and instrument handles, coil supports, insulated enclosures, brush holders, insulating spacers and special purpose plugs and sockets.


TYPES AVAILABLE

 

Sheets

 

Rods

 

Tubes

 

Other sections

Natural colour Kite Brand

 

Yes

No

(use Swan Brand)

Yes

Hollow sections only

Black Kite Brand

Yes*

 

 

 

 

 

 

 

 

*Minimum order quantities may apply.



SPECIFICATIONS for Kite Brand TUFNOL

 

BRITISH STANDARDS

Current Standards

Recent Standards

(now obsolete)

Sheet

BS EN 60893-3-4 Type PF CP 206

BS 2572 Type P3

BS 5102 Type 1

Round Tube

BS EN 61212-3-2 Type PF CP 32

BS 6128 Part  9 Type PF CP 91

Rectangular Tube

BS 6128 Part 13 Type PF CC 131

 

NEMA*

 

 

Sheet

NEMA LI-1-1983 Type XXX

 

Tube

NEMA LI-1-1983 Type XXX

 

Admiralty*

 

 

Sheet

NES 2053

 

Round Tube

NES 2054

 

 *Testing and certification to these standards is subject to special enquiry.   Standard quality testing is to British Standards.



PHYSICAL PROPERTIES

Kite Brand TUFNOL Sheet

 

PROPERTY

TYPICAL RESULT

UNITS

Cross breaking strength

175

MPa

Impact strength, notched, Charpy

2.7

kJ/m2

Compressive strength, flatwise

350

MPa

Compressive strength, edgewise

200

MPa

Resistance to flatwise compression

1.2

%

Shear strength, flatwise

105

MPa

Water Absorption

 

 

- 1.6mm thk.

39

mg

- 3mm thk.

47

mg

- 6mm thk.

56

mg

- 12mm thk.

70

mg

Electric strength, flatwise in oil at 90ºC

 

 

- 1.6mm thk.

14.5

MV/m

- 3mm thk.

13

MV/m

- 6mm thk.

8.8

MV/m

- 12mm thk.

6.1

MV/m

Electric strength, edgewise in oil at 90ºC

55

kV

Insulation resistance after immersion in water

1x1010

ohms

Loss tangent at 1 MHz

0.037

-

Permittivity at 1 MHz

5.1

-

Relative density

1.36

-

Maximum working temperature**

 

 

- continuous

90

ºC

- intermittent

120

ºC

Thermal classification

Class E

-

Thermal conductivity through laminae

0.26

W/(mK)

Thermal expansion in plane of laminae

1.8

x 10-5/K

Specific heat

1.5

kJ/(kgK)

Test methods as BS EN 60893-2, where applicable.

 

Kite Brand TUFNOL Round Tube

 

PROPERTY

TYPICAL RESULT

UNITS

Axial compressive strength

190

MPa

Cohesion between layers

110

MPa

Water absorption

1.0

mg/cm2

Insulation resistance after immersion in water

1x109

ohms

Axial electric strength in oil at 90ºC

40

KV

Radial electric strength in oil at 90ºC

 

 

- 1.6mm wall

8

MV/m

- 3mm wall

6

MV/m

Relative density

1.35

-

Test methods as BS EN 61212-2, where applicable.

 

**Users of highly stressed components at temperatures approaching the maximum are recommended to seek further advice from Tufnol Composites Ltd.

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