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3240 Epoxy phenol aldehyde glass cloth laminated sheet
3240 Epoxy phenol aldehyde glass cloth laminated sheet

Mechanical,electrical,electronic,applications,high mechanical strengh under moderate temperature and has competitive price!!!..

Our laminated product is formed through heat pressing after electric industry alkali glass cloth dips into the epoxy phenolic resin. It has high mechanic and dielectric performance, applicable as insulation structural components for electromechanical/electrical equipment, as well as used under damp environmental conditions and in oil of transformer.

The outside appears tidy and smooth, not allow any bubble, impurity or other evident defect, but slight scratch is allowed. Edge is to be cut tidy and the end surface is not allowed to have any delamination and/or crackle..

Table 1 Performance index 

Order

Item name

Unit

Test method

Index

1

Density

g/cm3

GB/T5130 section 8.1

(1.70-1.90)

2

Water absorption

mg

GB/T5130 section 8.2

Refer to table 2

3

Vertical layer direction bending strength

MPa

GB/T5130 section 5.1

340

4

Vertical layer direction compression strength

MPa

GB/T5130 section 5.3

(350)

5

Tensile strength

MPa

GB/T5130 section 5.7

(300)

6

Compact strength (Simply strut-beam method)

KJ/m3

GB/T5130 section 5.5.1

33

7

Insulation resistance after water dipping

Ω

GB/T5130 section 6.3

5.0 × 108

8

Mediate loss factor, 1MHz hour

____

GB/T5130 section 6.2

≤ 0.04

9

Dielectric constant, 1MHz hour

____

GB/T5130 section 6.2

≤ 5.5

10

Vertical layer direction electric strength at 90±2 transformer oil

KV/mm

GB/T5130 section 6.1

Refer to table 3

11

Parallel layer direction striking voltage

kV

GB/T5130 section 6.1

≥ 35

 
Table 2 Water absorption 

Average hickness mm

Water absorption mg

Average thickness mm

Water absorption mg

Average thickness mm

Water absorption mg

0.4

≤ 17

2.0

≤ 20

10

≤ 34

0.5

≤ 17

2.5

≤ 21

12

≤ 38

0.6

≤ 17

3

≤ 22

14

≤ 41

0.8

≤ 18

4

≤ 23

16

≤ 46

1.0

≤ 18

5

≤ 25

20

≤ 52

1.2

≤ 18

6

≤ 27

25

≤ 61

1.6

≤ 19

8

≤ 31

Single side processing to 22.5

≤ 73

 
Table 3 Electric strength 

Average thickness mm

Average strength kV/mm

Average thickness mm

Electric strength kV/mm

Average thickness mm

Electric strength kV/mm

0.4

≥ 16.9

1.0

≥ 14.2

2.2

≥ 11.4

0.5

≥ 16.1

1.2

≥ 13.7

2.4

≥ 11.1

0.6

≥ 15.6

1.4

≥ 13.2

2.5

≥ 10.9

0.7

≥ 15.2

1.6

≥ 12.7

2.6

≥ 10.8

0.8

≥ 14.8

1.8

≥ 12.2

2.8

≥ 10.5

0.9

≥ 14.5

2.0

≥ 11.8

3.0

≥ 10.2

3240 Epoxy phenol aldehyde glass cloth laminated sheet

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