Polyamide fiber is commonly known as nylon (nylon), the English name is polyamide (referred to as PA), and the density is 115 g/cm3;, is a general term for thermoplastic resins that contain repeating amide groups—[NHCO]—on the molecular backbone. These include aliphatic PA, aliphatic aromatic PA and aromatic PA. Among them, there are many varieties of aliphatic PA, large yield, and wide application, and its naming is determined by the specific number of carbon atoms of the synthetic monomer. It was invented by the famous American chemist Carothers and his research team. Nylon is a term for polyamide fiber (nylon).
Applications of Nylon.
The characteristics of nylon have many characteristics determine its wide range of applications, and we can see nylon in automobiles, electrical equipment, mechanical structures, transportation equipment, textiles, papermaking machinery, etc. With the miniaturization of automobiles, the high performance of electrical and electronic equipment, and the acceleration of the lightweight of machinery and equipment, the demand for nylon will be greater and the demand will be higher. In particular, as a structural material, modern equipment and products have put forward higher requirements for its strength, heat resistance, and cold resistance.
The inherent disadvantages of nylon are also an important factor limiting its application and promotion. In particular, PA6 and PA66 have strong advantages over PA46, PAL2 and other varieties, even if some properties cannot meet the requirements of the development of related industries. Therefore, the development of nylon must be aimed at a certain application field, through modification, improve some of its properties, to expand its application field.
It is mainly modified in the following aspects:
Improve the water absorption of nylon and improve the dimensional stability of products.
Improve the flame retardancy of nylon to meet the requirements of electronics, electrical, communication and other industries.
Improve the mechanical strength of nylon to achieve the strength of metal materials and replace metal.
Improve the low temperature resistance of nylon and enhance its ability to resist environmental strain.
Improve the abrasion resistance of nylon to adapt to occasions with high wear resistance requirements.
Improve the antistatic properties of nylon to meet the requirements of mining and its mechanical applications.
Improve the heat resistance of nylon to adapt to high-temperature conditions such as automobile engines.
Reduce the cost of nylon and improve product competitiveness.
Through the above methods to improve, the high performance and functionalization of nylon composite materials are realized, and then the development of products in related industries is promoted to high performance and high quality.