Application of Polyimide Glass Cloth Laminated Sheets

Polyimide Glass Cloth Laminated Sheets (PIGC301): PIGC301 Glass Cloth Laminated Sheets is a high-performance rigid l...

Polyimide Glass Cloth Laminated Sheets (PIGC301):

PIGC301 Glass Cloth Laminated Sheets is a high-performance rigid laminated insulation material manufactured by impregnating E-glass fiber cloth with polyimide (PI) resin and hot-pressing under high temperature and pressure. It is classified as a Class C（200℃） insulation material, specifically designed for high-temperature, high-strength, and high-reliability electrical applications.

1. Core Characteristics

Extreme Heat Resistance (Class C Insulation):
Continuous operating temperature ranges from 220°C to 260°C, with even higher short-term tolerance.
Features a very high Glass Transition Temperature (Tg), ensuring it does not soften or significantly lose mechanical strength at elevated temperatures.
Superior Mechanical Strength:
Maintains high flexural and tensile strength at both room and high temperatures.
Excellent dimensional stability with a low coefficient of thermal expansion, making it highly resistant to deformation.
Outstanding Electrical Properties:
Low dielectric constant and low dielectric loss across a wide range of temperatures and frequencies.
Strong arc resistance and high dielectric breakdown voltage (typically >40KV).
Chemical & Environmental Stability:
Exceptional radiation resistance (suitable for the nuclear industry).
Inherently flame retardant (UL94-V0 rated) with low smoke and zero halogen.
Highly resistant to acids, alkalis, and most organic solvents.

2. Typical Applications

Because its performance far exceeds standard epoxy glass sheets (like FR4/G10), it is primarily used in high-precision and high-demand scenarios:
Aerospace & Defense:
Used for inner linings, high-temperature insulation barriers, and radome structural components in missiles and satellites.
Insulation for electronic control systems located near aircraft engines.
Semiconductor & Electronics Industry:
High-Temperature Test Fixtures: Used as carrier boards for chip burn-in testing, which requires enduring long-term thermal cycling.
Wave/Reflow Soldering Pallets: Serves as a fire-resistant support material during PCB soldering processes.
Heavy Power Equipment:
Class H or C Motors: Manufacturing motor slot wedges, spacers, bushings, and structural supports for transformers.
Insulating components for high-voltage switchgear and traction motors (e.g., in high-speed rails and subways).
Nuclear Industry & Research:
Electrical insulation components inside nuclear power plants that require both radiation and heat resistance.
Precision Machining:
CNC-machined into precision insulating bolts, washers, gears, and sealing parts for high-temperature environments.

3. Selection Guide (Comparison with FR4 sheet)