Phenolic cotton cloth laminate

Mark

Structure

Class Т

Purpose

Dimensions

 Phenolic cotton cloth A GOST 2910-74 THAT 05758799-014-96 (for  thickness over 50,0 mm)

Cotton fabric, phenol formaldehyde pitch

105°С

For work in transformer oil and on air in conditions of normal relative humidity of 45-75 % at that (15-35) °С and frequency of a current of 50 Hz

Sheets in the size (450-980) х (1000-2480) mm; thickness-0,5-200mm

Constructional textolite ПТК GOST 5-78

Cotton fabric, phenol formaldehyde pitch

105° С

For manufacturing gears of worm wheels, plugs, bearings of sliding of rings

Sheets in the size (450-980) х (600-1980) mm. thickness-0,5-200,0 mm

Carpentry phenolic cotton cloth ПТ GOST 5-78

Cotton fabric, phenol formaldehyde pitch

105° С

For manufacturing details for which mark ПТК is intended, but working at lower loadings

(450-980)х(600-1980)mm , thickness — 0,5-70,0 mm

Phenolic cotton cloth rod 1class  и 2 class , GOST-5385-74

Cotton fabric, heat-convertible binding 

105° С

For work in transformer oil and on air in conditions of normal relative humidity

Diameter of 8,0-25,0 mm and 30,0-200,0 mm., length 500 and 1000 mm

The name of parameters

Unit of measure

А

ПТК

ПТ

Breaking point at a bend to perpendicularly layers, not less

МPа

90

152

142

Breaking point at a stretching, not less

МPа

45

-

-

Breaking point at compression in parallel layers, not less

МPа

-

160

155

Impact strength on Charpy on samples with a cut, not less

kJ / m2

With a cut 7,8

36

36

Density

g/сm3

1,3-1,4

1,3-1,4

1,3-1,4

Water absorption, no more for sheets thickness of 3,5 mm

mg

166

-

-

Water absorption, not less

%

-

0,7

0,7

Specific volumetric electric resistance, not less after air-conditioning in conditions 24h/ 23 With / 93 %, for sheets of thicknesses. 8,0 mm

Оhm- m

1-106

-

-

Penetrative pressure in parallel layers (one-minute testing) in conditions of M (90), transformer oil, not less

кV

15

15

15