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TUFNOL Grade 1P/24 


Phenolic Paper laminate with flame retardant low smoke formulation

Paper/phenolic resin laminated plastic

(SRBP - Synthetic Resin Bonded Paper) 

A quality electrical paper grade with enhanced fire and smoke properties

This is an insulating sheet material with electrical qualities similar to Kite Brand TUFNOL but with the additional features of improved fire properties.  TUFNOL Grade 1P/24 is manufactured with a specially formulated phenolic resin, which provides flame retardant properties combined with much reduced smoke output in a fire.  It is a good electrical insulating material meeting the requirements of BS EN 60893-3-4 Type PF CP 206 (and the former BS 2572 Type P3) and it also meets Class FV0 flammability in the BS 6334 (IEC 707) test.  In addition, it achieves Class 1 performance in the BS 476 Part 7 ‘Surface spread of flame’ test.


What is Grade 1P/24 used for?

Grade 1P/24 is used in electrical applications where a high quality electrical insulating sheet is required with the additional protection of improved fire properties.  Many conventional insulation applications would benefit from the use of flame retardant materials and the low smoke and good spread of flame performance offered by Grade 1P/24 is of particular importance in areas where escape from fire may be restricted.  It can be used for items such as terminal boards, mounting plates, busbars and cable supports in railway applications, ships and ferries and a wide range of underground and restricted access areas

 

TYPES AVAILABLE

 

Sheets

Natural colour Grade 1P/24

Yes

Minimum order quantities may apply.



SPECIFICATIONS for TUFNOL Grade 1P/24

BRITISH STANDARDS

Current Standards

Recent Standards

(now obsolete)

Sheet

BS EN 60893-3-4 Type PF CP 206

plus Flammability category FV0 plus BS 476 Part 7 Surface Spread of Flame Class 1

BS 2572 Type P3

Standard quality testing is to British Standards.


PHYSICAL PROPERTIES

TUFNOL Grade 1P/24 Sheet

PROPERTY

TYPICAL RESULT

UNITS

Cross breaking strength

150

MPa

Shear strength, flatwise

90

MPa

Water Absorption

 

 

- 1.6mm thick.

50

mg

- 3mm thick.

65

mg

- 6mm thick.

80

mg

Electric strength, flatwise in oil at 90ºC

 

 

- 1.6mm thick.

11

MV/m

- 3mm thick.

9

MV/m

Electric strength, edgewise in oil at 90ºC

45

kV

Insulation resistance after immersion in water

5x109

ohms

Loss tangent at 1 MHz

0.040

-

Permittivity at 1 MHz

5.4

-

Flammability category

FV0

-

Relative density

1.36

-

Maximum working temperature**

 

 

- continuous

90

ºC

- intermittent

120

ºC

Thermal classification

Class E

-

Test methods as BS EN 60893-2, 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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