25718-70-1

Usage

Uses

Used in Textile Industry:
Nylon 66 is used as a textile material for its high strength, durability, and resistance to abrasion. It is ideal for the production of fabrics, carpets, and other textile products that require these properties.
Used in Industrial Fibers:
Nylon 66 is employed as an industrial fiber for its strength and durability. It is used in applications such as tire cords, conveyor belts, and ropes, where high tensile strength and resistance to wear are essential.
Used in Automotive Industry:
Nylon 66 is used as a material for automotive parts due to its high strength, durability, and resistance to abrasion. It is suitable for components such as bushings, gears, and bearings, which require these properties for reliable performance.
Used in Electrical Components:
Nylon 66 is utilized in the production of electrical components, such as insulators and connectors, due to its excellent dielectric properties and resistance to heat and chemicals.
Used in Plastic Products:
Nylon 66 is used in the production of nylon 66 resin, which is further processed into various plastic products. Its versatility and properties make it suitable for applications in the manufacturing of consumer goods, packaging materials, and other plastic items.

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Relevant academic research and scientific papers

Polyamide-6,6-based blocky copolyamides obtained by solid-state modification

Copolyamides based on polyamide-6,6 (PA-6,6) were prepared by solid-state modification (SSM). Para- and meta-xylylenediamine were successfully incorporated into the aliphatic PA-6,6 backbone at 200 and 230 °C under an inert gas flow. In the initial stage of the SSM below the melting temperature of PA-6,6, a decrease of the molecular weight was observed due to chain scission, followed by a built up of the molecular weight and incorporation of the comonomer by postcondensation during the next stage. When the solid-state copolymerization was continued for a sufficiently long time, the starting PA-6,6 molecular weight was regained. The incorporation of the comonomer into the PA-6,6 main chain was confirmed by size exclusion chromatography (SEC) with ultraviolet detection, which showed the presence of aromatic moieties in the final high-molecular weight SSM product. The occurrence of the transamidation reaction was also proven by 1H nuclear magnetic resonance (NMR) spectroscopy. As the transamidation was limited to the amorphous phase, this SSM resulted in a nonrandom overall structure of the PA copolymer as shown by the degree of randomness determined using 13C NMR spectroscopy. The thermal properties of the SSM products were compared with melt-synthesized copolyamides of similar chemical composition. The higher melting and higher crystallization temperatures of the solid state-modified copolyamides confirmed their nonrandom, block-like chemical microstructure, whereas the melt-synthesized copolyamides were random. Copyright