BMGC301 Modified Bismaleimide Glass Cloth Laminate Insulation Board

product details

Description

Bismaleimide laminated glass cloth board is a plate-like laminate made from electrical non-alkali glass cloth impregnated with modified bismaleimide resin, baked and hot-pressed. It is designed for high-temperature insulation structures, such as slot wedges in motors. With a temperature rating of Class H, this material combines excellent mechanical strength, heat resistance, dielectric performance, and flame retardancy, making it ideal for use in H-class motors and electrical appliances as insulating structural components.


Features

  • High mechanical strength, providing stability and durability under mechanical stress.

  • Excellent heat resistance, suitable for Class H (180°C) applications.

  • Superior dielectric properties, ensuring reliable electrical insulation.

  • Good flame retardancy, enhancing fire safety in electrical equipment.

  • Strong radiation resistance, maintaining performance under electrical and thermal stress.

  • Low permeability, ensuring moisture and gas resistance.

  • Long-lasting durability, capable of withstanding harsh operating conditions.


Applications

Insulation structural components in high-temperature motors, such as slot wedges.

Electrical appliances requiring Class H insulation.

Components in transformers and generators where high mechanical and thermal performance is needed.

Any high-performance electrical equipment requiring flame-retardant and heat-resistant insulation materials.


Technical Data Sheet

Modified Bismaleimide Laminated Glass Cloth Board (BMIGC301)
No.Test ItemUnitValue
1Densityg/m³1.8~1.95
2Vertical Layer Bending Strength(normal)Mpa≥350
3Parallel Layer Impact Strength (simply supported beam method)KJ/m²≥60
4Vertical Layer Electrical Strength (90℃ transformer oil) (1mm thickness)Kv/mm≥14.0
5Parallel Layer Breakdown Voltage (90℃ transformer oil)kv≥35
6Dielectric Constant (50Hz)-≤5.5
7Dielectric Loss Factor(50Hz)
≤0.05
8Insulation Resistance after ImmersionΩ≥1.0*10^8
9Proof Tracking Index (PTI)-≥280
10Combustibility-HB40
11Temperature Index-180
12Water Absorption (1-20mm thickness)mg64~193
Note: Range value are measured for different thicknesses


Get A Quote

Send message

Please fill out the form below and we will get back to you as soon as possible.

+86 15866869385

+86 15866869385