• LAMNA TED RODS

    Laminated rods is made

of cotton cloth or glass cloth impregnated with phenolic resin or epoxy phenolic resin or epoxy phenolic resin respectively and hot pressed with forming round .The rods are suitable for use as insulating parts for mechanical, motors.electric equipment and can be used in transformer oil.

3721Phenolic cloth Laminating Rod

3721B Phenolic cloth Laminating Rod 

Appearance

The surface of the rods should be smooth without any air bulb and impurities small defect in colour or surface finish which are not impair use are allowed.

Nominal length and Tolerance

650mm ± 15mm 1000 ± 25mm

Diameter

8 ～ 150mm

8 ～ 100mm

Diameter deviation

8 -100mm

± 0.5mm ～± 2.3mm

± 0.5mm ～± 2.3mm

Deformation(%)

6 ～ 19mm

max.1.0

max.1.0

20mm up

max.1.5

max.1.5

Density min

1.26 ～ 1.30/cm³

1.26 ～ 1.30/cm³

Bending strength

min.914kgf/cm²

min.84 4kgf/cm²

Pressing strength

min.1410kgf/cm²

min.1310kgf/cm²

Parallel-to laminate break-down voltage

min.10kv

min.9kv

water absorbtion(%)

8 ～ 14mm

max.1.3

max.1.4

15 ～ 25mm

max.1.0

max.1.1

26 ～ 51mm

max.1.2

max.1.3

• Phenolic Cotton Fabric Laminate

Type ： 3025 3025B 3025C
Featrres:3025 Phenolic Cotton Fabric laminate is made of layers cotton cloth impregnated phenolic resin by processing under heat and pressure.

Properties

Unit

Value

3025

3025B

3025C

Products Applications

high mechanical properties ,machined as insulating construction parts.

high mechanical properties ,machined as insulating construction parts.

high mechanical properties ,machined as insulating construction parts.

Specific Gravity

1.30 ～ 1.42

1.30 ～ 1.45

1.30 ～ 1.45

Martens Heat Resistance (LW) (min)

℃

125

125

125

Tensile Strength(min)

Kgf/cm²

1100

900

700

Tensile Strength(min)

Kgf/cm²

700

－

－

Bonding (min.)

Kgf

550

550

550

Impact Strength (min.)Charpy

Kgf/cm²

25

－

－

Breakdown strength perpendicular to lamination in transformer oil at 90 ± 2 ℃ for 1.1 ～ 2mm thickness(min.)

Kv/mm

3.0

2.5(1.5 ～ 2mm thickness)

2.5(1.5 ～ 2mm thickness)

• Phenolic Paper Laminate

properties

Unit

value

3021

301B

3021C

Products Applications

high mechanical properties electrical and mechanical devices

high mechanical properties electrical and mechanical devices

high mechanical properties electrical and mechanical devices

Specific Gravity

1.30 ～ 1.45

1.30 ～ 1.45

1.30 ～ 1.45

Heat Resistance (Thickness less than 20mm )

℃

115

115

115

Flexural Strength (min.)(Thickness more than 2mm )

Kgf/cm²

1200

900

900

Tensile Strength (min.)

Kgf/cm²

1000

－

－

 Insulation resistance Parallel to lamination
Under normal condition
In case of humidity

Ω

1.0×10⁹

1.0×10⁷

1.0×10⁹

1.0×10⁶

1.0×10⁹

1.0×10⁶

Voltage endurance perpendicular to lamination in transformer oil 5minutes for 1.1 ～ 2mm thickness

kv/mm

5

14

12

Voltage endurance parallel to lamination in transformer oil for 5 minutes at 20 ± 5 ℃

kv

14

12

10

 ●Epoxy Glass Cloth Laminated Sheet

Properties

Unit

Grade

3240

3240B

Flexural strength perpendicular to laminations

—

Mpa

                   —

             —

A: under normal conditions

≥

—

340

320

E-1/150: 150±5 ℃

—

—

—

—

Impact Strength parallel to laminations (Charpy)

≥

KJ/m²

33

30

Insulation Resistance after immersion in water

(D-24/23)

≥

Ω

5.0×10⁸

1.0×10⁸

Dielectric Strength perpendicular to laminations

(in 90±2 ℃ transformer oil, 1 mm in thickness)

≥

MV/m

14.2

14.2

Breakdown Voltage parallel to laminations (in 90±2℃ transformer oil)

≥

KV

35

30

Permittivity (50Hz)

≤

—

5.5

—

Permittivity (1MHz)

≤

—

5.5

—

Dissipation Factor (50Hz)

≤

—

0.04

—

Dissipation Factor (1MHz)

≤

—

0.04

—

Water Absorption (D-24/23, 1.6mm in thickness)

≤

mg

19

—

Density

　—

g/cm³

(1.70-1.90)

(1.70-1.90)

Flammability

　—

—

—

—

—

Color

　—

—

Natural

Natural

—

Reference Standard

　—

—

GB/T1303.1

-1998

Enterprise Standard