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Phenolic Cotton Cloth Tube

1. Material: It is made of specialized cotton cloth impregnated phenolic resin, after dried, then heated, pressed and baked.

2.Heat resistance level: E class.

 


Description:

1. Funcation: High mechanical strength properties, wear resistance, low water absorption rate.

2. Standard: JB 4037-85

3. Usage: Used as the radial thrust bearing and material with wear resistance.

 

Technical parameters

Item

units

values

 

 

 

 

 

 

 

 

3520

3640

3641

380

382

364

355

356

3652

 

 

Density

g/cm
3

Less thanΦ25mm, ≥1.03.
More thanΦ25mm, ≥1.1

Less thanΦ13mm, ≥1.65.
More thanΦ13mm, ≥1.7

Less thanΦ13mm, ≥1.65.
More thanΦ13mm, ≥1.7

≥1.25

—-

≥1.40

≥1.5

≥1.5

≥1.5

Bending strenth

MPa

≥50-60

≥17

—-

≥137

≥400

≥117.6

—-

≥150

>80

Compressive strength

MPa

≥50-60

≥68

≥138

≥118

≥98

≥68.6

≥80

≥70

≥70

Shear strength

MPa

—-

—-

≥14.7

—-

—-

≥9.8

≥8.0

≥12

≥10

Water absorption rate

%

3-10

—-

0.4-1.0

≤1.2

—-

—-

—-

—-

—-

Vertical layer direction voltage resistance(in 90℃±2℃ transformer oil 5min)

KV

8.5~6

7~18

—-

—-

—-

7~18

—-

—-

—-

Parallel layer direction voltage resistance (in 90℃±2℃ transformer oil 5min)

KV

20~25

25

—-

—-

≥25
Normal state

—-

30

—-

25

Surface voltage resistance

KV

12

12

—-

—-

—-

—-

—-

—-

—-

Dielectric loss factor (50Hz,180℃±2℃)

 

≤0.03

≤0.03

 

 

 

 

 

 

≤0.03

Volume resistivity 180℃

MΩ.m

—-

—-

—-

—-

—-

≥10
5

—-

≥10
5

—-

Thermal stability

120(24h)

—-

—-

105(24h)

—-

—-

—-

—-

—-