Low-profile high-performance military composite material – aramid fiber

Aramid fiber has advantages such as high strength, high modulus, high temperature resistance,  and light weight,  making it an indispensable key material in fields such as national defense, aerospace,  rail transportation, and power and electrical engineering.

I. Product Overview

The type and properties of aramid fibers have a significant impact on the performance of the final product.

They can be classified into three types: ortho-aramid, para-aramid, and meta-aramid.

Aramid paper made from pure meta-aramid possesses high strength, low deformation, high temperature resistance,  chemical corrosion resistance, flame retardancy,  and excellent electrical insulation properties.

Para-aramid exhibits better overall performance than meta-aramid and is widely used in defense, aerospace, high-speed trains, and electrical insulation.

The production process from aramid fiber to aramid honeycomb core material involves a series of steps, including papermaking and hot pressing.

Aramid paper is a high-performance new material made from paper-grade aramid fiber through wet forming and high-temperature finishing processes.

Aramid honeycomb is a biomimetic structure made from aramid paper through a series of complex processes including coating, lamination, hot pressing,

edge trimming, stretching, shaping, impregnation, and curing. It possesses the hexagonal structure of a natural honeycomb.

Product Performance

Aramid fibers its lightweight, high strength, high modulus, and strong structural stability,  along with advantages such as sound insulation, heat insulation, and flame retardancy, 

make it suitable as a lightweight, high-strength structural material (primarily as a core material) for key applications in aerospace, rail transportation, and national defense.

Aramid honeycomb core materials, with their excellent performance, have become important weight-reduction materials in aerospace and rail transportation;

simultaneously, combined with prepregs, they occupy an important position in the field of radar absorption.

Honeycomb sandwich structure absorbing materials based on honeycomb core materials are important structural absorbing materials.

Aramid fibers honeycomb sandwich structure absorbing materials are mainly used in radar stealth applications;

they consist of aramid honeycomb cells impregnated with a radar-absorbing agent and a wave-transparent panel,  possessing both excellent mechanical and radar-absorbing properties.

Product Performance

The radar absorption performance of aramid honeycomb sandwich structure absorbing materials

mainly depends on the size of the honeycomb cells themselves and the impregnation adhesive system.

Currently, aramid honeycomb sandwich structure absorbing materials can achieve strong absorption in the 0-18GHz frequency band.

2. Main Application Scenarios

Main Application Scenarios of Aramid Paper

Depending on the functional applications of the products, meta-aramid paper series products are mainly used in the electrical insulation field,

with a small amount used in the honeycomb core material field;

para-aramid paper series products are mainly used in the honeycomb core material field.

The honeycomb core material prepared has a strength five times that of steel of the same mass, but a density only one-fifth that of steel.

Transformers are currently the field in my country that uses aramid paper the most.

Main Application Scenarios of Aramid Honeycomb Core Materials

Aerospace: When aramid paper honeycomb core materials are combined with panels to form sandwich structures,

they are mainly used in components such as flaps, ailerons, leading edges of vertical tails, radomes, and bulkheads.

This reduces the structural weight of aircraft and improves the wave transmission, noise reduction, and heat insulation performance of functional components.

In the shipbuilding sector: Honeycomb sandwich structures can reduce the weight of empty ships, improve their maneuverability and impact resistance,

and significantly enhance their corrosion resistance and stealth capabilities.

Urban transportation

In the rail transit sector: Aramid materials can effectively reduce energy consumption and noise in high-speed trains.

They have been applied to parts of high-speed trains such as side panels, roof panels, seats, partitions, luggage racks,  and sunroof panels, reducing vehicle weight and increasing train speed.

3. Conclusion

With the increasing application of aramid paper, and given that honeycomb structures are the best load-bearing structures in the aerospace field,

they will continue to be used in the structural design of aircraft and spacecraft for a long time.