Aramid III fabric specifications and properties

STARAMID® F-3 Aramid-III fiber has good weavability and can be made into various specifications of woven fabric and UD fabric. For the convenience of users, our company has specially launched several characteristic woven fabrics and UD fabrics. Their main specifications, models and properties are shown in Table 3 and Table 4.

Table 3 Fabric Specifications of STARAMID® F-3 Aramid-III

Note: Other fabric specifications can be customized according to customer requirements.

Table 4 UD Fabric Specifications of STARAMID® F-3 Aramid-III

PHYSICAL AND CHEMICAL CHARACTERISTIC OF STARAMID® F-3

Basic Physical, Mechanical and Thermal Properties

STARAMID® F-3 Aramid-III fiber has properties such as light weight, high strength, high modulus, high temperature resistance, flame retardancy, impact resistance, wear resistance and wave transmission.

Table 5 Basic Physical, Mechanical and Thermal Properties of STARAMID® F-3 Aramid-III

Note: 1. Mechanical property test standard: Q/91510132587572760X 015-2022

2. Due to different product specifications and test methods, the data in the table are for reference only.

3. *HASR refers to the strength retention of the fiber after 3 hours in air at 240℃.

Compared with other fibers

STARAMID® F-3 Aramid-III has excellent comprehensive performance, comparable to Armos.

Table 6 Comparison of STARAMID® F-3 Aramid-III with Other Fibers

*Melting Temperature

Figure 3 Mechanical Property Distribution of STARAMID® F-3 and Other Fibers

Water Absorption

The equilibrium moisture absorption of STARAMID® F-3 Aramid-III is about 2%. Its moisture loss and regain equilibrium curve is shown in Figure 4. Relative humidity (RH) has an important influence on the moisture absorption of STARAMID® F-3 Aramid-III and the time to reach moisture equilibrium.

Figure 4 Moisture Loss-Regain Equilibrium Curve of STARAMID® F-3 Aramid-III

Thermal Properties

Figure 5 Typical Thermogravimetric Curve of STARAMID® F-3 Aramid-III in N2 and Air (10℃/min)

STARAMID® F-3 Aramid-III does not melt. It decomposes at 538℃ in a nitrogen atmosphere or at 520℃ in an air atmosphere. The decomposition temperature varies with heating rate and exposure time. Figure 5 shows the TGA curves of STARAMID® F-3 Aramid-III in nitrogen and air environments.

DMA is used to measure the mechanical properties of the material as a function of temperature and to investigate the relaxation transition of molecular chain segments, which is helpful in explaining the temperature dependence of the material's mechanical properties at the molecular level. Figure 6 shows that the initial storage modulus of STARAMID® F-3 Aramid-III is high but decreases rapidly after 200℃. In addition, it can be seen from the Tan Delta curve that the glass transition temperature is

Figure 5 Typical Thermogravimetric Curve of STARAMID® F-3 Aramid-III in N2 and Air (10℃/min)

Figure 6 DMA Curve of STARAMID® F-3 Aramid-III in N2 (10℃/min)

Thermal Aging Properties

The aging of STARAMID® F-3 Aramid-III at different temperatures is shown in Figure 7. It can be seen that temperature has a significant influence on the aging of the fiber: the higher the temperature, the greater the strength loss, so special attention should be paid when using it for a long time at high temperatures above 100℃. In addition, as shown in Figure 8, STARAMID® F-3 Aramid-III series products have better thermal aging resistance than imported Aramid 1414.

Figure 7 Aging Curves of STARAMID® F-3 Aramid-III at -24℃, 50℃, 120℃, 150℃ and 200℃

Figure 8 Comparison of Aging Curves of STARAMID® F-3 Aramid-III and Aramid 1414 at 220℃

UV Resistance

Ultraviolet light has a certain influence on the fiber. Fiber without protective treatment exposed to ultraviolet light for a long time changes surface color from yellow to brown slowly. ① When STARAMID® F-3 Aramid-III is exposed to ultraviolet light for a long time, its mechanical properties decrease, but compared with imported high-modulus Aramid 1414, the strength decline of STARAMID® F-3 Aramid-III is slower (as shown in Figure 9); the degree of decline is affected by the ultraviolet wavelength, exposure time, ultraviolet radiation intensity and the geometric structure of the product itself. ② When STARAMID® F-3 Aramid-III is exposed to ordinary indoor light for a long time, its mechanical properties do not decrease. ③ When the sunlight wavelength is between 300 nm and 450 nm, the STARAMID® F-3 Aramid-III fiber has strong absorption, so special attention should be paid to protective treatment and such light should be eliminated. ④ The ultraviolet aging process of STARAMID® F-3 Aramid-III only occurs when oxygen is present; other environmental conditions (humidity, air pollutants such as sulfur dioxide) do not affect the aging process.

Figure 9 Stability of STARAMID® F-358 and Imported High-Modulus Aramid 1414 under UV Light

Specific Heat

The specific heat of STARAMID® F-3 Aramid-III is greatly affected by temperature (as shown in Figure 10). When the temperature rises from room temperature to 111℃, the specific heat of STARAMID® F-3 Aramid-III increases to a peak, and then the specific heat gradually decreases as the temperature continues to rise. After the temperature reaches 180℃, the change in specific heat tends to level off.

Figure 10 Specific Heat Analysis Curve of STARAMID® F-3 Aramid-III (10℃/min)

Combustibility

Although STARAMID® F-3 Aramid-III has flame-retardant properties, it can still burn when the ambient oxygen content reaches or exceeds 42%, and it self-extinguishes after the fire source is removed. STARAMID® F-3 Aramid-III produces some harmful gases when burning, as shown in Figure 11.

Figure 11 Combustion Products of STARAMID® F-3 Aramid-III Fiber

Chemical Stability

STARAMID® F-3 Aramid-III has good chemical stability, but when exposed for a long time to environmental media such as strong acid solutions, strong alkali solutions and salt solutions, some of its properties will decrease accordingly.

Table 7 Performance of STARAMID® F-3 Aramid-III in Various Chemical Media

None ··· -- strength reduction 0~10%; Low ·· --- strength reduction 10~20%;

Medium ---- strength reduction 20~40% ;High ----- strength reduction 40~80%

Severe ----- strength reduction 80~100%

TYPICAL APPLICATIONS OF STARAMID® F-3 ARAMID-III

Air Transportation

STARAMID® F-3 Aramid-III has the characteristics of high strength, high modulus, dimensional stability, impact resistance, wear resistance, wave transmission, weather resistance, electrical insulation, fatigue resistance and light weight, and is an ideal raw material for manufacturing engines, wave-transmitting structural parts and impact-resistant components.

Power and Telecommunications

STARAMID® F-3 Aramid-III has the characteristics of high strength, high modulus, dimensional stability, wave transmission and electrical insulation, and can provide excellent performance and stability for wind turbine blades, optical cable reinforcement materials, light antennas, special printed circuit boards, electronic and electrical moving structural parts and control cables.

Safety Protection

STARAMID® F-3 Aramid-III has the characteristics of heat resistance, flame retardancy, flexibility and low density, so firefighting suits, fire blankets, heat-resistant work clothes, flame-retardant fabrics, cut-resistant gloves and cut-resistant seat fabrics made of STARAMID F-3 have excellent strength and stability.

Conveying Materials

STARAMID® F-3 Aramid-III has the characteristics of high strength, high modulus, weather resistance, chemical resistance, wear resistance and low density, and is the preferred solution for conveyor belts, high-pressure hoses, long-distance oil pipelines and pressure vessels.

Water transport

STARAMID® F-3 Aramid-III has the characteristics of low density, high strength, high modulus, impact resistance and wear resistance, and can provide excellent performance and stability for high-pressure vessels, submarine sonar devices and mooring ropes used in various ships.

Tires and Brakes

STARAMID® F-3 Aramid-III has the characteristics of light weight, high strength, high toughness, wear resistance and fatigue resistance, and can be used in tires and brakes to reduce tire rolling resistance and improve braking safety.

High-End Sporting Goods

STARAMID® F-3 Aramid-III has the characteristics of high strength, high modulus, impact resistance, wear resistance and low density, and can ensure the safety and functionality of racing cars, snowboards, tennis rackets and parachute ropes.

Product Packaging Information

Table 8 Common Packaging Specifications of STARAMID® F-3 Aramid-III