EPGC308 Epoxy Fiberglass Sheet

product description

EPGC 308 Epoxy Fiberglass Sheet is a product made by impregnating epoxy resin matrix onto electronic-grade alkali-free glass fiber cloth and processed through heat pressing. This product meets the requirements of IEC60893-2004 and GB/T 1303.4-2009 standards. It has a brownish yellow color, and other colors can be customized as needed.

EPGC308 epoxy sheet are suitable for insulating structural parts of electrical equipment such as class H motors, traction motors, transformers, carbon brush holders, railcars,wind energy generators, thermal insulating layer of aerospace equipments, etc.

Advantages：

1.Remarkable mechanical strength at medium or elevated temperatures, including a tensile elongation of more than 50% even at higher temperatures. This ensures its resilience and ability to withstand mechanical stress effectively.

2.Consistent electrical performance, characterized by an insulation resistance of up to 1012Ω even after being immersed in water. This demonstrates its reliable and stable electrical insulation capabilities.

3.Enhanced dielectric strength under high humidity conditions (exceeding 35kV) when laminated parallel to the layers. This feature makes it particularly suitable for applications requiring dependable electrical insulation in humid environments.

Applications:

Slot Wedges	Machine parts	Electromechanical Components
Terminal Boards and Tag Strips	Bolt Insulation	Presses and moulds
High-Voltage Switches	Elements that support very high dynamic efforts	High frequency equipment

Technical Parameter：

General Properties：
Property	Unit of measure	Typical Value
Density	gc/m3	1.90-2.05
Water Absorption (5mm)	%	≤0.04
Flame Retardant	UL94	–
Electrical Properties：
Property	Unit of measure	Typical Value
Electrical Strength ⊥	kV/mm， thickness=3mm	≥10.2
Electrical Strength ∥	kV	≥45
Tracking Resistance	PTI	–
Insulation resistanceafter immersion	MΩ	5*104
Mechanical Properties：
Property	Unit of measure	Typical Value
Flexural Strength	MPa	≥340
Tensile Strength	MPa	≥300
Compressive Strength ⊥	MPa	≥350
Modulus Of Elastricity	MPa	≥24000
Impact Strength ∥	kJ/m2	≥50
Thermal Properties：
Property	Unit of measure	Typical Value
Thermal Charactersitices	℃	180
Notes：
Disclaimer: The above values are based upon routine test data and do not form the basis of a supply contract. These products may be used in a diverse range of applications and whilst every effort is made to ensure the information in this data sheet is accurate, it must be stressed that it is the user’s responsibility to ensure suitability for the intended end use.

Our Certificates

We are steadily growing into a leading Chinese enterprise in electrical insulation materials with international brand influence.

The company holds multiple certifications including ISO9001, ISO14001, and OHSAS18000, and our products have passed UL, RoHS, CE, and MSDS testing reports.

With over 65 years of experience in the insulation materials industry, a comprehensive quality control system, and mature after-sales service, we have earned a good reputation both domestically and internationally.

EPGC308 Epoxy Fiberglass Sheet