Can you tell the nylon fiber?

guide
Nylon was developed by an outstanding scientist in the United States, Carothers, and a research team under his leadership. It is the first synthetic fiber to appear in the world. The emergence of nylon has brought a new look to textiles. Its synthesis is a major breakthrough in the synthetic fiber industry and a very important milestone in polymer chemistry.

im8y4bo2hso

In 1935, a polymer was prepared from adipic acid and hexamethylenediamine. Since both components contained 6 carbon atoms, it was called polymer 66 at that time. He then melted the polymer and extruded it through an injection needle, stretching it under tension called a fiber. This fiber is polyamide 66 fiber, which was named Nylon after it was industrialized in 1939. It is the earliest synthetic fiber variety to realize industrialization.

  1. Nylon 6 (PA6)
    English name: Polyamide6 or Nylon6, referred to as PA6; Nylon 6, also known as polyamide 6, is polycaprolactam, which is obtained by caprolactam ring-opening polycondensation.

Translucent or opaque milky white resin, with superior mechanical properties, stiffness, toughness, wear resistance and mechanical shock absorption, good insulation and chemical resistance. Widely used in many fields such as auto parts, electronic and electrical components.

  1. Nylon 66 (PA66)
    English name: Polyamide66 or Nylon6; referred to as PA66; Nylon 66, also known as polyamide 66, namely polyhexamethylene adipamide.

Compared with nylon 6, its mechanical strength, stiffness, heat resistance and wear resistance, and creep resistance are better, but its impact strength and mechanical shock absorption performance are reduced. It has a wide range of applications in automobiles, drones, electronics, etc.

  1. Nylon 1010 (PA1010)
    English name: Polyamide1010; Nylon1010; PA1010 for short. Nylon 1010, also known as polyamide 1010, is polyseramide.

Nylon 1010 is made from castor oil as the basic raw material. It was first successfully developed and industrialized by Shanghai Celluloid Factory in my country. Its biggest feature is its high ductility, which can be stretched to 3 to 4 times the original length, and has high tensile strength, excellent impact resistance and low temperature resistance, not brittle at -60°C, and has excellent wear resistance , ultra-high toughness and good oil resistance, widely used in aerospace, cable, optical cable, metal or cable surface coating, etc.

  1. Nylon 610 (PA610)
    English name: Poly[imino-1,6-hexanediylimino(1,10-dioxo-1,10-decanediyl)]; Polyamide 610; Nylon 610; PA610 for short. Nylon 610, also known as polyamide 610, is polyhexamethylene diamide.

It is translucent creamy white. Its strength is between nylon 6 and nylon 66. Small specific gravity, low crystallinity, low water absorption, good dimensional stability, good wear resistance, self-extinguishing. Used for precision plastic parts, oil pipelines, containers, ropes, conveyor belts, bearings, textile machinery parts, insulating materials and instrument cases in electrical and electronics, etc.

  1. Nylon 612 (PA612)
    English name: Polyhexamethylene dodecanamide; Polyamide 612; Nylon 612; PA612 for short. Nylon 612, also known as polyamide 612, is polyhexamethylene dodecylamide.

Nylon 612 is a kind of nylon with better toughness. Its density is lower than that of 610. It has extremely low water absorption, excellent wear resistance, small molding shrinkage, excellent hydrolysis resistance and dimensional stability. The main application is as monofilament and cable coating for high-end toothbrushes.

  1. Nylon 11 (PA11)
    English name: Polyamide11 or Nylon11; PA11 for short. Nylon 11, also known as polyamide 11, is polyundecalactam.

White translucent body. Its outstanding features are low melting temperature and wide processing temperature, low water absorption, good low temperature performance, and good flexibility that can be maintained at -40°C to 120°C. Mainly used in automobile oil pipeline, brake system hose, optical fiber cable coating, packaging film, daily necessities, etc.

  1. Nylon 12 (PA12)
    English name: Polyamide12 or Nylon12; PA12 for short. Nylon 12, also known as polyamide 12, is polydodecamide.

It is similar to Nylon-11, but has a lower density, melting point, and water absorption than Nylon-11. Because it contains a large amount of toughening agent, it has the properties of combining polyamide and polyolefin. Its outstanding features are high decomposition temperature, low water absorption and excellent low temperature resistance. Mainly used in automotive fuel pipes, instrument panels, accelerator pedals, brake hoses, noise-absorbing components of electronic appliances, and cable sheaths.

  1. Nylon 46 (PA46)
    English name: Polyamide46 or Nylon46; PA46 for short. Nylon 46, also known as polyamide 46, is polybutylene adipamide.

Its outstanding features are high crystallinity, high temperature resistance, high rigidity and high strength. Mainly used in automobile engine and peripheral components, such as cylinder head, oil cylinder base, oil seal cover, transmission. In the electrical industry, it is used in contactors, sockets, coil bobbins, switches and other fields that require high heat resistance and fatigue resistance.

  1. Nylon 6T (PA6T)
    English name: Polyamide6T or Nylon6T; PA6T for short. Nylon 6T, also known as polyamide 6T, is polyhexamethylene terephthalamide.

Its outstanding features are high temperature resistance (melting point is 370°C, glass transition temperature is 180°C, and can be used for a long time at 200°C), high strength, stable size, and good soldering resistance, making PA6T especially suitable for adhesive technology (SMT). Electronic connector. Mainly used in automotive parts, oil pump cover, air filter, heat-resistant electrical parts such as wire harness terminal board, fuse, etc.

  1. Nylon 9T (PA9T)
    English name: Polyamide9T or Nylon9T; PA9T for short. Nylon-9T, also known as polyamide-9T, is polynonanediamide terephthalamide.

Its outstanding features are: low water absorption, water absorption rate of 0.17%; good heat resistance (melting point is 308°C, glass transition temperature is 126°C), and its welding temperature is as high as 290°C. Mainly used in electronics, electrical appliances, information equipment and auto parts.

  1. Nylon 10T (PA10T)
    English name: Polyamide10T or Nylon10T; PA10T for short. Nylon 10T, and polyamide 10T, that is, polydecanediamide terephthalamide.

Its main features are very low moisture absorption, high temperature resistance, excellent toughness, rigidity and dimensional stability, good fluidity and processability, easy coloring, high strength of welding fusion line, melting point as high as 300~316°C, and density of 1.42 g/cm3. PA10T has a benzene ring and a long flexible chain of diamine, which makes the macromolecule flexible, so it has a high crystallization rate and crystallinity, and is suitable for rapid prototyping. Widely used in LED reflector brackets, motor end covers, brush brackets, gears, etc.

  1. Transparent nylon (semi-aromatic nylon)
    English name: polytrimethyl hexamethylene terephthalamide; transparent polyamide resin; transparent nylon is an amorphous polyamide, chemical name: polyhexamethylene terephthalamide.

The transmittance of visible light is 85% to 90%. It inhibits the crystallization of nylon by adding components with copolymerization and steric barriers to the nylon component, thereby producing an amorphous and difficult-to-crystallize structure, which maintains the original strength and toughness of nylon, and obtains transparent thick-walled products. The mechanical properties, electrical properties, mechanical strength and rigidity of transparent nylon are almost at the same level as PC and polysulfone.

  1. Nylon 1414 (PA1414)
    English name: Polyamide1414; Kevlar; Nylon1414. Referred to as PA1414. Polyphthalamide (Polyphthalamide).

The molecule is mainly composed of rigid benzene rings, which is a highly rigid polymer. Its molecular structure has a high degree of symmetry and regularity. There are strong hydrogen bonds between the macromolecular chains, which makes the polymer have high strength and high modulus. High-strength, high-temperature resistance, low density, small heat shrinkage, good dimensional stability, etc., can be made into high-strength, high-modulus fibers.

  1. Nylon 1313 (Aramid 1313)
    English name: Polyamide1313; Nomex; Nylon1313; PA1313 for short. It is obtained by polycondensation of isophthaloyl chloride and m-phenylenediamine as monomers.

Nomex has much higher mechanical properties and heat resistance than aliphatic PA (as a fiber fabric, its lifespan is 8 times that of aliphatic PA fiber cloth and 20 times that of cotton cloth), good heat aging resistance (2000h heat aging at 250°C) After that, the surface resistivity and volume resistance remain unchanged), and it can still maintain good electrical properties at higher temperatures or in humid environments. It is mainly used for H-class electrical insulation materials and the preparation of high-performance fibers (HT-1 fibers).

  1. Nylon 56 (PA56)
    English name: Polyamide56 or Nylon56; Abbreviation: PA56. Nylon 56 is polycondensed from pentamethylenediamine and adipic acid, and the extraction of pentamethylenediamine can come from natural organisms.

Environmental protection, good performance, can improve the comfort of the end fabric. Its water absorption rate, glass transition temperature, strength, softness, hygroscopicity and resilience are all better than some products of nylon 6, nylon 66 and polyester.

  1. Nylon 1212 (PA1212)
    English name: Polyamide1212; Nylon1212; PA1212 for short. It is obtained by polycondensation of dodecanediamine and dodecanedioic acid.

PA1212 has the lowest water absorption rate in nylon, good dimensional stability, oil resistance, alkali resistance, good abrasion resistance, chemical resistance, good transparency, and excellent toughness at low temperature. Widely used in aerospace, automobiles, textiles, instruments, medical equipment, etc.

跳至内容