Pre-oxidized aramid blended woven fabric for manufacturing professional firefighters’ fire-fighting combat uniforms.

Pre-oxidized polyacrylonitrile fiber, scientifically known as pre-oxidized PAN fiber, is an intermediate product in the carbon-fiber manufacturing process. It is produced by subjecting raw polyacrylonitrile filaments to pre-oxidation in air at a specific temperature range—typically between 200 and 300 degrees Celsius—resulting in a thermally stable ladder-like structure. This fiber typically appears black and exhibits flame-retardant and heat-resistant properties comparable to those of carbon fiber, while retaining the flexibility and processability characteristic of textile fibers. Aramid, specifically para-aramid in this context, is a synthetic fiber made from aromatic polyamides, renowned for its exceptional specific strength and high modulus.

In actual production, pre-oxidized fibers are blended with aramid fibers in specific ratios, with common blending ratios of 50/50 or 60/40 (pre-oxidized fiber to aramid). The blending process is designed to precisely control the balance of yarn properties. Subsequently, the blended yarns are woven into fabrics with plain, twill, or satin weaves using weaving techniques. This weaving method imparts greater structural stability, tear resistance, and dimensional stability to the fabric.

The product shown in the tweet is a 560 g/m² pre-oxidized aramid blended woven fabric. Customers in need are welcome to contact us for collaboration.

The core performance of this blended fabric stems from the synergistic interaction between the two fibers, which is manifested in the following aspects:

In terms of thermal protection and flame-retardant performance, this fabric delivers top-tier results. Pre-oxidized silk boasts an exceptionally high limiting oxygen index; when exposed to flame, it does not melt or drip but instead rapidly carbonizes to form a barrier that effectively insulates against heat and flames. Aramid fibers also possess intrinsic flame retardancy, charing and expanding upon exposure to fire. When these two materials are combined, the resulting fabric exhibits superior flame-retardant durability—maintaining its performance even after multiple washes—and outstanding protective capabilities under instantaneous exposure to extremely high heat fluxes, often outperforming comparable fabrics woven from pure aramid yarns. Its long-term service temperature range spans from several tens of degrees below zero up to over 250°C, and it can retain structural integrity even during brief exposure to higher temperatures.

In terms of mechanical properties and tensile strength, blended yarns effectively compensate for the relatively lower tensile strength of pre-oxidized polyester fibers. The incorporation of high-strength aramid fibers significantly enhances the tensile strength, tear resistance, and puncture resistance of the blended yarns and their resulting fabrics. Moreover, the woven structure further translates these mechanical properties into overall fabric durability and damage resistance, enabling the material to withstand severe friction, snagging, and even a certain degree of impact.

In terms of chemical stability and environmental resistance, pre-oxidized silk fibers exhibit excellent resistance to corrosion by acids, bases, and a wide range of chemical media, as well as outstanding radiation resistance. Aramid fibers also possess superior chemical resistance; however, prolonged exposure to strong acids and strong bases must be evaluated on a case-by-case basis, depending on the specific concentrations involved. The combination of these two materials enables blended fabrics to withstand harsh industrial environments—such as those in the chemical and metallurgical industries—where complex corrosive substances are present, thereby extending the service life of protective equipment.

In terms of practicality and durability, the incorporation of aramid fibers into pure pre-oxidized silk fabrics addresses the relatively poor abrasion resistance and stiff hand feel that can characterize such fabrics, thereby enhancing the comfort and freedom of movement of the resulting garments. Moreover, the dyeability of aramid fibers offers color options beyond the natural black of pre-oxidized silk, facilitating functional or hierarchical differentiation through color in various application scenarios.

The 560-gram pre-oxidized aramid blended woven fabric is primarily targeted at specialized applications with extremely stringent safety and protection requirements.

The field of specialized protective apparel is one of its most core application areas. It is used to manufacture the outer layers of fire-fighting suits for professional firefighters, as well as workwear for industrial settings where there is a risk of open flames, high temperatures, and molten-metal spatter—such as in high-temperature operations in industries like steelmaking, arc welding, glass manufacturing, and thermal power generation. In addition, it is also employed in specialized tactical garments that require simultaneous resistance to fire, cutting, and tearing.

The high-temperature industrial and safety protection materials sector represents another major market. These fabrics can be used to manufacture industrial filter bags for prolonged operation in high-temperature, dusty environments; thermal insulation blankets and fire-resistant felts for high-temperature pipelines and equipment; as well as fire-rated isolation curtains and escape-route coverings for large industrial facilities and transportation vehicles. Their high basis-weight specifications make them particularly suitable for producing heavy-duty protective gear with extremely stringent durability requirements.

It also finds valuable applications in the aerospace and high-end transportation sectors. Owing to its lightweight (relative to metals), high strength, and flame-retardant properties, it can be used for interior fire-resistant layers in aircraft, high-speed trains, and racing cars, as well as fire-resistant seat covers and a wide range of internal insulation materials that must meet stringent flame-retardancy standards, thereby enhancing overall passive safety.

In other specialized protective equipment fields—such as high-performance welding gloves, cut-resistant gloves, high-temperature arm and leg guards, and safety wraps and shields used in certain special applications—this type of high-strength, composite flame-retardant fabric is employed.

A high basis weight of 560 g/m² indicates a heavy, stiff fabric, making it particularly suitable for high-risk work environments where activity levels are relatively well controlled. Through a scientifically optimized fiber blend and a mature weaving process, this material combines exceptional flame retardancy and heat resistance, outstanding mechanical strength, and excellent environmental durability, primarily serving critical high-end protective applications in fire-fighting, specialized industries, and the aerospace sector—areas where safeguarding human life is of paramount importance.

E-mail:
gdkaidun@163.com

Phone/WeChat:
86-131-3828-6677

Address:
Room 401, Building 21, No. 1, Keqing Road, Yundonghai Street, Sanshui District, Foshan City, Guangdong Province