Electrical insulation

Electrical insulation

Glass fiber sheets, rods and tubes insulating materials are used in the production of components that require good mechanical, chemical and electrical properties

They have besides good mechanical and electrical insulating properties, high climate resistance. It is used in production of components with good mechanical and electrical properties, for electrical equipment at higher temperatures or in humid environments, for stressed electrical insulating components, such as chassis, body equipment, housing parts of distribution boards, transformers, switchgears, electrical machines.

Characteristics of Fiberglass Electroisolant Materials

Electrical Insulation:
High Dielectric Strength: Fiberglass materials have high dielectric strength, making them effective insulators even under high voltage conditions. Low Dielectric Constant and Loss: This ensures minimal energy loss during the operation of electrical systems.
Mechanical Properties:
High Tensile Strength: Fiberglass is known for its excellent tensile strength, which helps maintain structural integrity under mechanical stress. Lightweight: Despite its strength, fiberglass is lightweight, which is advantageous in many applications.
Thermal Properties:
High Thermal Stability: Fiberglass can withstand high temperatures without degrading, making it suitable for use in environments with extreme thermal conditions. Low Thermal Conductivity: This property helps in minimizing heat transfer, which is crucial for maintaining the efficiency of electrical systems.
Chemical Resistance:
Fiberglass materials are resistant to a wide range of chemicals, including acids and alkalis, which ensures longevity and durability in various environments.
Moisture Resistance:
They have low water absorption, ensuring that their insulating properties are maintained even in humid or wet conditions.

Fiberglass G10, G11, FR4 sheets, rods and tubes

Each type of insulating material has specific properties that make it suitable for certain applications. Selection depends on factors such as thermal conductivity, electrical properties, fire resistance, mechanical strength, and environmental impact.

Brominated epoxy resin systems used in FR-4 and FR-5 materials were originally created to stop or retard potential fire hazards caused by over-heating or electrical failure resulting in arcing. While HBr is very effective at flame retardation, the resulting white smoke (HBr) can corrode copper, standard grade mild and stainless steels and most other metals. In 1998 NEMA updated their standards to differentiate G-10 and G-11 from FR-4 and FR-5. This update specifically excludes the use of bromine or other halogen flame retardants in the production of G-10 or G-11.


Electrical and Electronic Components:
– Used in the manufacturing of PCBs, transformers, motors, and generators.
– Insulating tapes and sleeving protect wires and cables from electrical, thermal, and mechanical damage.
Aerospace and Automotive:
– Employed in various components for their lightweight, strength, and insulating properties.
– Used in engine compartments and other high-temperature areas.
– Industrial Equipment:
– Insulation for high-voltage equipment and machinery.
– Used in the construction of insulators, bushings, and switchgear.
– Used in the reinforcement of building materials.
– Provides structural support and thermal insulation.


  • Durability: Long-lasting even under harsh conditions.
    Versatility: Can be molded and fabricated into various shapes and sizes.
    Safety: Reduces the risk of electrical fires and improves overall safety in electrical systems.