Innovative Manufacturer of Honeycomb and MI Heating Products
Innovative Manufacturer of Honeycomb and MI Heating Products
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| Material: | Aramid Paper | Foil Thinkness: | 0.05, 0.06 Or 0.076 Mm |
|---|---|---|---|
| Cell Size: | 2, 3, 5, 8 Mm | Coating: | Phenolic Resin |
| Height: | Customized | Product Name: | Aramid Honeycomb Core |
Extreme High Specific Stiffness Lightweight Balanced Performance Aramid Fiber Nomex Honeycomb Core
Extreme High Specific Stiffness Lightweight Balanced Performance Aramid Fiber Nomex Honeycomb Core is a reinforcing layer for a sandwich-structured composite material, made primarily from aramid paper, mimicking the hexagonal cell structure of a natural honeycomb cell. Since the concept of sandwich structures emerged in 1940, core materials have evolved through balsa wood, metal honeycomb, fiberglass, and carbon-fiber-reinforced thermoset honeycomb. Aramid paper honeycomb represents the culmination of this development. The most representative product on the market is the Nomex® meta-aramid paper honeycomb, invented and commercialized by DuPont in the 1960s.
The working principle is based on the “I-beam” sandwich concept: the low-density aramid honeycomb core is sandwiched between high-strength face sheets (carbon fiber, fiberglass, or metal) bonded via resin film or autoclave processes. The high-strength face sheets bear tensile and compressive loads, while the aramid honeycomb core maintains the distance between face sheets, resists shear forces, and provides support. This structure efficiently distributes material away from the neutral axis, dramatically improving overall flexural rigidity and stability. Sandwich structures made with aramid honeycomb can greatly reduce structural weight while maintaining rigidity.
Aramid honeycomb core is produced through a process including adhesive application, stacking, hot pressing, expansion, resin impregnation, curing, and slicing. Adhesive application is critical for cell regularity and node strength; stacking positioning accuracy can be within ±0.05 mm, with automatic stacking speeds up to 360 sheets/hour. The resin impregnation and curing steps mainly control the core density, directly determining product yield and performance consistency.
Mechanical Properties of the Nomex Honeycomb Core
| Size of honeycomb cell (mm)) |
Density (Kg/ m3) |
Plain compressive strength(MPa) | Plain shear properties(Mpa) | ||||
| Pure core material | Sandwich structure | Strength | Modulus | ||||
| L | W | L | W | ||||
|
1.83 |
48 | 1.8 | 2.28 | 1.38 | 0.79 | 88 | 45 |
| 64 | 3.12 | 3.83 | 1.81 | 1.11 | 100 | 57 | |
|
2.75 |
32 | 0.92 | 1.0 | 0.79 | 0.46 | 66 | 32 |
| 48 | 2.1 | 2.33 | 1.48 | 0.86 | 121 | 54 | |
| 72 | 3.93 | 4.26 | 2.62 | 1.45 | 151 | 65 | |
Mechanical Properties of the Nomex Honeycomb Core 2
| Core type | Density ( kg/m3) |
Stab.comp.str (Mpa) |
L Shear Properties(Mpa) | W Shear Properties(Mpa) | |||||||
| Strength | Modulus | Strength | Modulus | ||||||||
| Typ | Min Ind | Typ | Min Ind | Typ | Min Ind | Typ | Min Ind | Typ | Min Ind | ||
| 3.2-29 | 29 | 0.77 | 0.60 | 0.56 | 0.47 | 25.9 | 17.4 | 0.35 | 0.30 | 14.5 | 11.3 |
| 3.2-48 | 48 | 2.35 | 1.92 | 1.22 | 1.03 | 44.5 | 34.5 | 0.73 | 0.61 | 27.1 | 20.9 |
| 3.2-64 | 64 | 3.88 | 3.22 | 1.72 | 1.55 | 61.0 | 54.0 | 0.99 | 0.82 | 34.0 | 25.0 |
| 3.2-80(E) | 80 | 6.67 | 4.49 | 1.92 | 1.65 | 66.1 | 52.3 | 1.20 | 0.97 | 43.9 | 36.3 |
| 3.2-80 | 80 | 5.19 | 4.69 | 2.22 | 1.95 | 71.0 | 64.0 | 1.23 | 1.05 | 38.4 | 34.0 |
| 3.2-96(E) | 96 | 8.99 | 8.78 | 2.49 | 2.25 | 82.8 | 77.5 | 1.73 | 1.67 | 59.1 | 55.5 |
| 4.8-40 | 40 | 1.63 | 1.46 | 0.95 | 0.92 | 38.0 | 36.3 | 0.55 | 0.52 | 23.9 | 22.5 |
| 4.8-48 | 48 | 2.45 | 1.86 | 1.24 | 1.02 | 41.3 | 34.0 | 0.77 | 0.60 | 30.0 | 18.0 |
| 4.8-72 | 72 | 5.28 | 4.60 | 1.70 | 1.32 | 57.1 | 47.5 | 1.09 | 0.80 | 40.5 | 23.2 |
| 4.8EX-48 | 48 | 2.20 | 1.80 | 0.79 | 0.62 | 20.6 | 16.1 | 0.87 | 0.72 | 42.0 | 34.0 |
Key Characteristics
| Characteristics | Detail |
| Lightweight & High Strength, Extremely High Specific Stiffness | Density ranges from 24 kg/m³ to 160 kg/m³, meeting various structural design requirements. Specific stiffness is about 9 times that of steel. Cell sizes from 1.8–5.5 mm, densities 29–144 kg/m³, maximum size up to 3900×1850×900 mm. Up to 50% lighter than aluminum honeycomb of the same volume. |
| Outstanding Flame Retardancy & Self-Extinguishing | Does not melt or drip when exposed to fire, self-extinguishing, low smoke density and low toxicity, meeting the strictest fire safety standards in aviation and high-speed rail (including FST – flame, smoke, toxicity). |
| Excellent Environmental & Corrosion Resistance | Stable under high humidity, resistant to acids, alkalis, seawater, and mold, never rusts. Ideal for marine, outdoor, and humid environments – far superior to aluminum honeycomb in these conditions. |
| Unique Resilience & Vibration Damping | Absorbs shock and vibration energy, protecting internal equipment; ideal for aviation, military, and other dynamic-load demanding structures. |
| Good Electromagnetic Transparency (Radome Performance) | Minimal attenuation of radar and microwave signals, making it ideal for radomes, antenna housings, and stealth structures in UAVs. |
| Excellent Machinability & Field Repairability | Easy to machine and shape (including curved or tapered forms), and field‑repairable – local damage can be fixed with relatively simple methods, significantly reducing life‑cycle maintenance costs. |
| Effective Insulation Against Water, Sound, Electricity, Heat | The enclosed air cells make it a natural thermal and acoustic insulator, providing superior thermal and acoustic insulation. |
Advantages
| Advantages | Specific Performance |
| Lightweighting | 30%-70% weight reduction compared to traditional metal or solid laminates; 50% lighter than aluminum honeycomb; improves fuel efficiency, range, or payload |
| Balanced Performance | Combines light weight, high strength, fire resistance, corrosion resistance, thermal/acoustic insulation, and electromagnetic transparency – solves the problem of single materials unable to meet multiple requirements |
| Process Compatibility | Compatible with carbon fiber prepreg, fiberglass prepreg, metal face sheets; suitable for autoclave, compression molding, and other processes |
| No Galvanic Corrosion | Non‑metallic, avoids galvanic corrosion when in contact with carbon fiber skins – higher structural safety and reliability |
| Excellent Fatigue & Creep Resistance | High fatigue resistance, no collapse or deformation under long‑term load; dimensionally stable under thermal cycling and vibration; more durable than PMI or PU foams |
| Localization Breakthrough | Domestic aramid paper (e.g., YT series, HKD series, PTF series) now in stable production, breaking long‑term foreign monopoly; costs reduced significantly |
| Mature Full Industry Chain | Domestic companies have built complete chains from aramid fiber, sizing agents, aramid paper, resin, prepreg, to honeycomb core and composite parts; performance meets Boeing BMS8-124 and Airbus DHS142115ST standards |
Application Fields
1 Aerospace & Aviation
· Aircraft structural parts: wings, flaps, ailerons, fairings, radomes, engine cowlings, cabin doors, spars, rib webs
· Interior systems: cabin floors, cargo floors, sidewall panels, luggage rack liners, decorative parts
· Satellite antennas & radomes: widely used for satellite antenna reflectors, airborne and ground radar housings
· Launch vehicles: rocket fairings etc.
· eVTOL / low‑altitude aircraft: ultra‑thin cores (wall thickness only 0.02 mm) driving adoption
2 Rail Transportation
· Carbody structures: roofs, window frames, luggage racks, partitions, floors, driver desks, equipment hatch covers
· Interior materials: high‑speed train/metro interior wall panels, ceiling panels, cabinets – must meet stringent fire safety standards (e.g., EN 45545-2)
3 Marine & Offshore
· Hull structures, interior bulkhead panels, deck sandwich structures
· Yachts and racing boats – outstanding water resistance and impact resistance
4 Defense & Protective Equipment
· Ballistic helmets, body armor, ballistic plates
· Missile transport vehicles, military shelters
· Satellite antenna housings, military radomes
5 High‑End Sports Equipment
· Competition skis, water skis, surfboards, snowboards
· High‑performance rackets (badminton, tennis)
· F1 car body parts, fairings, high‑performance racing cars, snowmobiles
6 New Energy & Construction
· Wind turbine nacelle covers, blades
· Building reinforcement, sandwich panels for construction
· Acoustic panels (vibration damping improves sound quality)
