Polyimide Foam (PI Foam) refers to the molecular structure of the aryl heterocyclic polymer compounds containing imide groups, the main chain of the aryl ring and heterocyclic as the main structural unit, the beginning of the research is to meet the aerospace field for heat-resistant, high-strength, lightweight structural materials for the urgent needs of the polymer materials, polyimide is the best polymer materials can be used in practice the best overall performance, is located in the polymer new material Polyimide has excellent performance.
Polyimide Foam has excellent performance, its high temperature resistance, low temperature resistance, strong insulation, coefficient of thermal expansion similar to that of metals, excellent mechanical properties and processing performance, non-toxic, intrinsic flame retardant and other characteristics, so that it is widely used in various fields and play an irreplaceable role.
| Flexible Polyimide Foam | Rigid Polyimide Foam | ||||||
| 1 | 2 | 3 | 4 | 1 | 2 | ||
| I. Physical and Chemical Properties | Apparent Density, kg/m³ | 5.0–6.0 | 6–10 | 10–15 | 15–32 | 70–110 | 110–200 |
| Thermal Conductivity, W/m·K (23°C ±2°C) | ≤0.04 | ||||||
| Moisture Absorption Rate (Relative Humidity 95%±3%, temperature 49℃±2℃, time 96 h), % | ≤5 | ||||||
| Radiation resistance | No significant changes in appearance after receiving a cumulative radiation dose of 10,000 Gy. | After receiving a cumulative radiation dose of 200,000 Gy , no significant changes in appearance. | |||||
| Temperature resistance | -55°C for 12 hours: no cracking; 300°C for 12 hours: surface remains non-tacky. | -55°C for 12 hours, no cracking; 300°C for 12 hours, no surface tackiness. | |||||
| Acid Resistance (20% Hydrochloric Acid) | Immersion for 24 hours, no surface changes | ||||||
| Alkali resistance (10% sodium hydroxide) | Immersion for 24 hours, no surface changes | ||||||
| Oil resistance (120# gasoline) | Soaked for 24 hours, no change in surface volume | ||||||
| Tensile strength, MPa | ≥0.05 | ≥0.06 | ≥0.07 | ≥0.08 | ≥0.2 | ≥0.3 | |
| Permanent Compression Deformation, % | ≤30 | ≤28 | ≤25 | ≤20 | |||
| Compressive strength (10%), MPa | ≥0.35 | ≥0.45 | |||||
| II. Material Toxicity | Room Temperature Toxicity | Meets requirements of GJB11.2 and GJB11.3 | |||||
| At-Room-Temperature Smoke and Toxicity | Complies with FTPc regulations | ||||||
| III. Fire Protection Performance | (Limiting) Oxygen Index, % | ≥32 | ≥40 | ||||
| Smoke Density (Dm) (Flameless Mode, Flame Mode) | ≤100 | ≤200 | |||||
| Flame resistance | Self-extinguishes within 1 second after removal from flame source with no melting droplets | ||||||
| Low Flame Spread | Meets FTPc regulation requirements | ||||||
| IV. Combustion Performance | Material latent heat (combustion heat value), MJ/m² | ≤45 | |||||
| V. Construction Performance | Workability | Dust-free, easy to cut, easy to package, meeting user construction process requirements | |||||
| VI. Acoustic Performance | Noise Reduction Coefficient | ≥0.6 | |||||
Max size: 1.25*2.5m
Flame retardant, A-0 level fire prevention
Ultra-low thermal conductivity (≤ 0.004 (W- m-1-K-1))
Non-absorbent, anti-condensation, non-failure in the presence of water
High and low temperature resistance (-260℃-350℃)
VOC is zero, no smell
Environmentally friendly, non-toxic
Good toughness, good resilience, not easily damaged
Density as light as 5kg/m3
Acid and alkali resistance oil resistance
UV resistance
Good weather resistance
No slagging, no mould
Ultra-low smoke emission, smoke density less than 15
| Item | Test Methods | parameters | ||
| Physical and Chemical Properties | Apparent density (kg/m3) | GB/T6343-2009 | 8±1KG | |
| Thermal conductivity （W* m-1*K-1） | GB/T10295-2008 | ≤0.037 | ||
| Continuous temperature to use | recommended value | -260°C to 250°C | ||
| Moisture absorption rate (humidity 95%, temperature 25℃) | GB/T20312-2006 | ≤3% | ||
| aperture ratio | GB/T10799-2008 | ≥95% | ||
| absorption | Standing tone wave test (full band) | ≥0.75 | ||
| Surface insulation ( Ω .cm) | GB/t 31838.2-2019 | 1.21E+16 | ||
| Electrical strength (kv/mm) | ASTM D149-20 | 1.87 | ||
| Tensile strength (kPa) | ASTM D3574-17 | >45 | ||
| Compression strength (kPa) | GB/T6344-2008 | 4.83kPa (25% deformation) | ||
| Thermal decomposition temperature/°C | GB/T19466.2-2004 | 550°C | ||
| Toxicity | VOC | Gas phase mass spectrometer (SGS testing) | 0 | |
| Toxicity of ambient releases and pyrolysis products | 2010FTP Rules Annex 1 Part 2 | lower toxicity | ||
| smoke density | <15 | |||
| flue gas toxicity | fit | |||
| Fire Resistance | flame retardant | UL 94-2013 | V0 | |
| Limiting oxygen index (%) | GB8410-2006 | >37 | ||
| Self-extinguishing time | 0 second | |||
| Combustion Performance | ||||
| Burning length | 0 mm | |||
| droplet | no | |||
• Effectively reduces the weight of the hull, thereby lowering fuel consumption and increasing cargo capacity
• Applications:
Thermal and acoustic insulation systems for naval vessels;
Cabin noise reduction and insulation ventilation pipe insulation
Ceiling noise reduction and muffling
Lithium Energy Storage Batteries
Thermal insulation: Thermal conductivity ≤0.033 W/m·K, stably protect power batteries under extreme high/low temperature, block heat spread during thermal runaway.
Intrinsic fire resistance: Self-extinguishing after flame removal, ultra-low smoke emission to extend evacuation time in thermal failure accidents.
Waterproof & moisture-proof non-absorbent foam, permanent humidity isolation for battery packs.
Excellent cushioning shock absorption, buffer expansion stress of battery cells.
Impact-absorbing lightweight padding for safety helmets and spacecraft living cabins, adaptable to high-vacuum working environments.
Thermal isolation liner for aircraft and satellite thermal protection systems.
These products are liquid polyimide resin films rather than foam boards, extended matching materials of our composite system:
Aerospace-grade quality control
Stable production capacity
Customizable density and thickness
CNC precision cutting service
OEM & private label support
Fast global shipping
Technical consultation available
We support industrial and aerospace-level project requirements.
Property | Polyimide Foam | PU Foam | Phenolic Foam | Rock Wool |
Max Temp | 250°C | 120°C | 150°C | 600°C |
Cryogenic Resistance | Excellent | Poor | Moderate | Poor |
Flame Retardancy | UL94 V0 | Needs additive | Good | Non-combustible |
Smoke Emission | Very Low | High | Medium | Low |
Weight | Ultra-Light | Light | Medium | Heavy |
Aerospace Suitable | Yes | No | Limited | No |
Beyond supplying standard foam sheets, JLON manufactures finished polyimide foam components according to customer drawings, CAD files, and production requirements.
Available processing capabilities include:
CNC profile cutting
Precision milling
Grooving and slotting
3D surface machining
Die cutting
Assembly kitting
Ready-to-install PI foam components help customers reduce production time and improve assembly efficiency.
JLON applies strict quality control throughout manufacturing to ensure consistent material performance.
Quality inspection includes:
Raw material inspection
Density verification
Dimensional inspection
Batch consistency checking
Appearance inspection
Technical support is available for:
Material selection
Density recommendation
Thickness design
Machining methods
Composite integration
From polyimide foam sheets to customized insulation components, JLON provides complete solutions for demanding engineering applications.
Polyimide foam is a lightweight high-performance insulation material with excellent thermal stability, flame resistance, low smoke generation, and acoustic absorption properties. It is widely used in aerospace, transportation, marine, and industrial high-temperature applications.
Depending on the grade and application conditions, polyimide foam can provide continuous operating performance at approximately 300–350°C and maintain reliable insulation performance under thermal cycling and extreme environments.
Yes. Polyimide foam has inherent flame resistance and produces very low smoke during fire exposure. It also shows minimal melting and dripping behavior, making it suitable for safety-critical insulation applications.
Polyimide foam offers high-temperature resistance, low density, excellent thermal insulation, acoustic absorption, dimensional stability, and long service life compared with conventional polymer foam materials.
Polyimide foam is commonly used in aerospace insulation, aircraft cabins, UAV thermal protection, rail transportation, marine systems, battery thermal management, and industrial high-temperature equipment.
Yes. JLON provides both flexible and rigid polyimide foam in sheets, blocks, and customized components to meet different insulation, structural, and processing requirements.
Yes. JLON offers customized solutions including density, thickness, dimensions, CNC machining, and finished insulation components according to customer drawings and technical requirements.
Yes. Polyimide foam can be precision processed through CNC cutting, milling, grooving, slotting, and other machining methods to produce complex insulation parts.
Selection depends on operating temperature, insulation requirements, density, mechanical needs, and installation conditions. JLON can recommend suitable PI foam solutions based on application requirements.
Yes. JLON provides material recommendations, technical support, samples, prototype development, and OEM fabrication services for polyimide foam projects.
