3240 Epoxy glass laminated sheet

3240 Epoxy-phenolic glass cloth laminated sheet is made of alkali-free E-glass cloth impregnated with epoxy resins by processing under heat and pressure.
This product having high mechanical and dielectric properties, fine heat and humidity resistance, can be used in electrical machine and devices as insulating construction parts in moist circumstances and in transformer oil.

1.Applications: With high mechanical strength, Insulation, heat resistance, electrical properties and good moisture resistance properties. Widely range of applications, for example: Suitable for using as insulating structural parts in electric equipment, such as electric generators, motors, switch board, etc.

2. Thickness: 0.2-100mm  Size:; 1220x2440mm; 1020x2020mm  Temperature grade:B glass(130℃)  Color: yellow, red , green, black.

3.The other size can be supplied according to customers’ requests.

※Products can be supplied sheets or shapes according to customer drawing

※Note: The values noted in above technical specification are given only  for our customers’ reference and should not be used in writing specifications.

4.Technical data:

Properties

Unit

Index Value

Fact Value

3240-A

3240-A

Flexural Strength perpendicular to laminations

A: under normal conditions

Mpa

≥340

345

Impact Strength parallel to laminations (Charpy)

KJ/m2

≥33

34.5

Tensile Strength

Mpa

≥300

300

Insulation Resistance after immersion in water (D-24/23)

W

≥5.0×108

5.1×108

Dielectric Strength perpendicular to laminations
(in 90±2 ℃ transformer oil, 1 mm)

KV/mm

≥10.2

10.4

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

KV

≥35

36.1

Permittivity (50Hz)

≤5.5

5

Permittivity (1MHz)

≤5.5

5.1

Dissipation Factor (50Hz)

≤0.04

0.032

Dissipation Factor (1MHz)

≤0.04

0.032

Water Absorption (D-24/23, 1.6mm

≤mg

34

21.5

Density

g/cm3

(1.70-1.90)

1.9

Color

Natural

Natural

Reference Standard

GB/T1303.1-1998

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