3020 Phenolic Paper Laminated Sheet

0.4

±0.07

8

±0.47

0.5

±0.08

10

±0.55

0.6

±0.09

12

±0.62

0.8

±0.10

14

±0.69

1

±0.12

16

±0.75

1.2

±0.14

20

±0.86

1.6

±0.16

25

±1.00

2

±0.19

30

±1.15

2.5

±0.22

35

±1.25

3

±0.25

40

±1.35

4

±0.30

45

±1.45

5

±0.34

50

±1.55

6

±0.37

Notes:
  Other tolerances may be agreed upon by the supplier and the purchaser.
  Where the nominal thickness is not one of the listed preferred thicknesses,   the tolerances shall comply with those for the next higher preferred nominal   thickness.
  Available supply dimensions: 960±15 mm × 1460±15 mm, 960±15 mm × 1960±15 mm

1

Flexural   strength (perpendicular to layer)

MPa

≥1.6

≥120

2

Apparent   flexural modulus

MPa

≥1.6

≥(7000)

3

Compressive   strength (perpendicular to layer)

MPa

≥5

≥(250)

4

Shear strength   (parallel to layer)

MPa

≥5

≥(10)

5

Tensile   strength

MPa

≥1.6

≥(100)

6

Bond strength

N

≥10

≥3200

7

Dielectric   strength (perpendicular to layer) in oil at 90℃±2℃

MV/m

≤3

See Table 3

8

Breakdown   voltage (parallel to layer) in oil at 90℃±2℃

kV

>3

≥20

9

Relative   permittivity 48Hz～62   Hz

—

≤3

≤5.5

10

Relative permittivity   1M Hz

≤3

—

11

Dielectric   loss factor 48Hz～62   Hz

—

≤3

≤0.05

12

Dielectric   loss factor 1M Hz

≤3

—

13

Insulation   resistance after water immersion

Ω

All

≥1×10⁷

14

Comparative   tracking index (CTI)

—

≥3

≥(100)

15

Long-term heat   resistance T1

—

≥3

≥(105)

16

Density

g/cm³

All

(1.3 ~ 1.4)

17

Water   absorption

mg

All

See Table 4

0.4

≥19.0

1.6

≥14.3

0.5

≥18.2

1.8

≥13.9

0.6

≥17.6

2

≥13.6

0.7

≥17.1

2.2

≥13.4

0.8

≥16.6

2.4

≥13.3

0.9

≥16.2

2.6

≥13.2

1

≥15.8

2.8

≥13.0

1.2

≥15.2

3

≥13.0

1.4

≥14.7

—

—

For the   dielectric strength perpendicular to layers in oil at (90±2) ℃, either the 20s step-up voltage   test or the 1-minute withstand voltage test may be selected. Materials   complying with either test shall be deemed to meet the requirements of this   standard for dielectric strength perpendicular to layers in oil at (90±2) ℃.
  If the arithmetic mean measured thickness of the specimen falls between two   thickness values listed in the table above, the required value shall be   obtained by linear interpolation.
  If the arithmetic mean measured thickness is less than 0.4 mm, the dielectric   strength requirement shall adopt the value for 0.4 mm.
  If the nominal thickness is 3 mm and the arithmetic mean measured thickness   exceeds 3 mm, the required value for 3 mm thickness shall apply.
  Type 3020 shall be preconditioned in air at (105±5) ℃ for 96 hours before testing, then   immediately transferred to hot oil.

0.4

≤165

5

≤342

0.5

≤167

6

≤382

0.6

≤168

8

≤470

0.8

≤173

10

≤550

1

≤180

12

≤630

1.2

≤188

14

≤720

1.6

≤204

16

≤800

2

≤220

20

≤970

2.5

≤240

25

≤1150

3

≤260

One side   machined to 22.5

≤1380

4

≤300

Notes
 
  ① If the arithmetic mean measured thickness of the specimen falls between two   thickness values listed in the above table, the corresponding required value   shall be determined by linear interpolation.
  ② If the arithmetic mean measured thickness is less than 0.4 mm, the water   absorption requirement shall adopt the limit value for 0.4 mm. If the nominal   thickness is 25 mm and the arithmetic mean measured thickness exceeds 25 mm,   the limit value for 25 mm thickness shall apply. For plates with nominal   thickness greater than 25 mm, single-side machining to 22.5 mm is required,   and the machined surface shall be smooth.