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Nylon 66
- Origin
- : Taiwan
- CAS Number
- : 32131-17-2
- HS Code
- : 390810
Basic Info
- IUPAC Name
- : poly(hexamethylene adipamide)
- Molecular Formula
- : (C12H23NO)n
- Synonyms & Trade Names
- : Nylon 66; Polyamide 66; PA 6.6; Nylon 6,6
- Purity / Assay (%)
- : Polymer grade
- Grade / Quality Level
- : Industrial Grade
- Physical Form
- : Solid
- Concentration
- : Pure substance
- Appearance / Color
- : White to off-white solid
- Odor
- : Odorless
- Melting Point (°C)
- : 265.0000
- Density (g/cm³)
- : 1.1400
- Solubility in Water
- : Insoluble
- UN Number
- : Not applicable
- H-Statements
- : None
- P-Statements
- : P260
- REACH Status
- : Registered
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 13
- Storage Conditions
- : Cool, dry; away from moisture
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Brief Overview
Nylon 66 is a synthetic polymer made from the combination of two monomers, adipic acid and hexamethylenediamine. The polymer has a repeating unit of (NH-(CH2)6-NH-CO-(CH2)4-CO-), which gives Nylon 66 its unique properties of high strength, durability, and thermal stability. It is used in a wide range of applications, such as automotive parts, electrical and electronic components, textiles, and industrial products, due to its ability to withstand heat, chemicals, and abrasion. Nylon 66 is a versatile material that can be processed into different forms, including fibers, films, and molded parts, making it suitable for a variety of applications.
Manufacturing Process
Polymerization: The first step is the polymerization of the two monomers, adipic acid and hexamethylenediamine. The monomers are heated to around 280-300°C in the presence of a catalyst to form Nylon 66 polymer.
Filtration: The Nylon 66 polymer is then filtered to remove any impurities that may have formed during the polymerization process.
Extrusion: The filtered Nylon 66 polymer is then melted and extruded through a spinneret to form long fibers. The spinneret has small holes through which the polymer is forced to form the fibers.
Drawing: The extruded fibers are then stretched or "drawn" to align the polymer chains and increase their strength and durability.
Heat Setting: The drawn fibers are then heat set, or annealed, by heating them to around 200°C for a period of time. This process helps to stabilize the fibers and prevent them from shrinking or stretching.
Cutting and Spinning: The heat-set fibers are then cut into shorter lengths and spun into yarns. These yarns can be further processed into a variety of different products, such as textiles, carpets, and industrial fibers.