PI (polyimide) sheet

PI (polyimide) sheets boasts excellent chemical resistance, a key performance advantage that makes it stand out in industrial applications. It maintains structural and performance stability in most common chemical environments—exhibiting good tolerance to organic acids, inorganic acids (e.g., dilute sulfuric acid, hydrochloric acid), alkaline solutions (e.g., sodium hydroxide solution), and most organic solvents (e.g., ethanol, acetone, petroleum ether). It rarely dissolves, corrodes, or degrades in these media. Additionally, it has impermeability to industrial fluids like oils and hydraulic oils, suiting scenarios where contact with such substances is unavoidable.

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Features & Advantages of PI

Ultra-high temperature polyimide (PI) polymer characteristics and advantages

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High Temperature

UL certified for long-term use at 260℃; maintains strength even at 300℃.

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Wear Resistance

Excellent durability under high temp, heavy load and corrosive conditions.

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Self-Lubricating

Low friction — works oil-free and in oil, water, steam, mild acids/alkalis.

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Corrosion Resistance

Insoluble in common solvents; resists organic and inorganic chemicals.

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High Strength

Superior mechanical strength, rigidity and surface hardness.

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Easy Processing

Supports injection molding, machining, bonding and ultrasonic welding.

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Hydrolysis Resistant

Works for thousands of hours in steam above 250℃ or pressurized water.

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Flame Retardant

UL94 V-0 at 1.45 mm thickness without additives.

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Low Smoke

Produces very low smoke and toxic gases when burned.

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Electrical Stability

Stable electrical performance across wide temp/frequency ranges.

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Radiation Resistance

Retains mechanical properties under high-dose gamma radiation.

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Dimensional Stability

Excellent dimensional stability under demanding conditions.

PI Properties Table

Ultra-high temperature polyimide (PI) polymer performance table

Test Item Test Standard Unit JHPI-10 JHPI-10-21 JHPI-10-22 JHPI-HT JHPI-YS JSJHTPI-01 JSJHTPI-02
Density ISO 1183 g/cm3 1.40 1.43 1.7 1.4 1.36 1.32 1.36
Tensile Strength ISO 527 Mpa 96 90 60 92 121 90 97
Elongation at Break ISO 527 % 10 5 2.5 8 13 8 8
Flexural Strength ISO 178 Mpa 148 126 90 140 171 130 138
Charpy Impact Strength ISO 179 MPa 90 135 13 88 No Break 100 No Break
Heat Deflection Temperature ISO 75-1/-2 ℃ 300 300 300 320 255 230 250
Continuous Service Temp. UL746B ℃ 350 350 350 380 250 250 250

High-Performance Polyimide (PI) Solutions

Discover the versatile applications of high-temperature polyimide (PI) polymer, a material engineered for extreme environments and superior performance.

Key Characteristics & Applications

High-temperature polyimide is a high-performance polymer widely used across various industries, including automotive, semiconductors, electronics, and more. Its exceptional properties make it a go-to material for demanding applications.

  • Low friction and wear-resistant components under high speed and pressure.

  • Excellent creep or plastic deformation resistance.

  • Superb self-lubricating or oil-lubricating properties.

  • Liquid sealing components for high-temperature and high-pressure environments.

  • High bending, tensile, and impact strength.

  • Corrosion, radiation, and rust-resistant components.

  • Components for long-term use at temperatures above 300°C, with short-term resistance up to 400-450°C.

  • High-temperature structural adhesives for extreme conditions.

  • Microelectronics applications including stress-buffering coatings and dielectric films.

Typical Products

  • Mold hot runner insulation plates and rings
  • Piston rings, valve seats
  • Chip test sockets
  • Copier separation claws
  • Laser imprinting rollers
  • Semiconductor chip nozzles
  • Semiconductor industry fixtures and jigs
  • Gas chromatography seals
  • Rolling, sliding, and thrust washers
  • Plasma torch vortex rings
  • Gears, Automotive engine gaskets
  • Glass industry brackets
  • Microwave components

Application Industries

  • Aerospace
  • Medical devices
  • Analytical and testing equipment
  • Petrochemicals
  • Gears and seals
  • Electronics, Semiconductors, Photovoltaics, FPD
  • Food processing, packaging, and beverage filling
  • New energy vehicles
  • Textile printing and dyeing machinery
  • Composites
  • General machinery