Product Description

Usage scenarios

1. Aerospace: used to manufacture aircraft fuselages, wings and other structural parts, as well as cables and ropes of aerospace equipment. For example, some structures of Boeing 787 passenger aircraft use para-aramid composite materials. Due to its light weight, high strength and fatigue resistance, it can reduce the weight of the aircraft, improve fuel efficiency and flight performance.

2. Military and national defense: It is an important material for manufacturing protective equipment such as bulletproof vests, helmets, and bulletproof armor. It can also be used to manufacture protective layers and structural parts of military vehicles, ships, and aircraft. For example, the US military's PASGT helmet uses para-aramid materials, which can effectively resist the impact of bullets and shrapnel. Protect the lives of soldiers.

3. Automotive industry: It can be used to manufacture automobile brake pads, clutch plates, tire cords, transmission belts and other parts. For example, some models of high-end automobile brands such as Mercedes-Benz and BMW use brake pads containing para-aramid, which can improve the high temperature resistance and wear resistance of brake pads and extend the service life. It can also be used to manufacture seals and thermal insulation materials for automobile engines.

4. Electronic and electrical fields: It can be used to manufacture insulating materials for electronic equipment, reinforcing materials for wires and cables, etc. For example, para-aramid filaments are used as reinforcing cores in optical fiber cables to protect optical fibers from external damage and improve the tensile strength of optical cables. strength and impact resistance to ensure stable transmission of communication signals.

5. Sports goods field: It can be used to manufacture sports goods such as rackets, clubs, skis, bicycles, etc. For example, the frame of Wilson tennis rackets uses para-aramid fiber, which can improve the strength and rigidity of the racket, while reducing weight and improving the athlete's experience.

Price advantage

1. High cost performance: Although the price of 1500D para-aramid filament is relatively high, it has excellent properties such as high strength, high modulus, high temperature resistance, and wear resistance. When used in aerospace, military and defense fields, it can reduce material consumption while ensuring product performance and quality. The amount of material used is reduced, thereby reducing the overall cost and having a high cost-effectiveness ratio.

2. Long service life: The filament has good fatigue resistance and durability, is not easily damaged during use, and has a long service life. If used in components such as automobile brake pads and transmission belts, it can reduce the number of replacements, reduce maintenance costs and downtime, and indirectly improve economic benefits.

3. Recyclability: Para-aramid filament has a certain degree of recyclability. After the product's service life ends, it can be recycled and reused through a specific recycling process, reducing resource waste and environmental pollution, meeting the requirements of sustainable development, and also improving its economic value to a certain extent.

4. Substitution advantage: In some application fields, 1500D para-aramid filament can replace traditional metal materials, asbestos, etc., such as replacing asbestos in brake pads and thermal insulation materials, which can not only improve the performance and quality of the product, but also avoid the harm of asbestos to the human body and the environment, and has significant substitution advantages.

Production process

1. Raw material preparation: Select high-quality raw materials such as p-phenylenediamine and terephthaloyl chloride, and ensure that their purity and quality meet production requirements.

2. Polymerization reaction: Perform low-temperature solution polymerization of p-phenylenediamine and terephthaloyl chloride in amide solvents, and add a small amount of inorganic salt calcium chloride as a cosolvent , control the reaction temperature, raw material molar ratio and other parameters to obtain polymer powder.

3. Dissolution and liquid preparation: dissolve the polymer powder in concentrated sulfuric acid and make spinning solution at a specific temperature, and its mass content needs to be controlled within a certain range.

4. Dry-jet wet spinning: the spinning solution is squeezed out from the spinneret by a gear pump, and after air layer drawing, it is coagulated in a coagulation bath, and then the tow is washed with water, alkali washed, and washed again with water to remove impurities and residual solvents.

5. Post-treatment: After drying, hot drawing, oiling and other post-treatment processes, the performance and processability of the fiber are improved, and finally rolled up to obtain 1500D para-aramid filament.