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Nylon PA66

Updated: 2026-07-24

Overview

Nylon PA66 is a synthetic polymer belonging to the polyamide family, first developed by DuPont in the 1930s. It is produced through the polymerization of adipic acid and hexamethylenediamine. PA66 is known for its high mechanical strength, thermal resistance, and durability, making it a preferred material for demanding industrial applications. Due to its excellent balance of properties, PA66 is widely used in sectors such as automotive, electrical, and consumer goods. Its ability to withstand high temperatures and resist wear makes it ideal for components subjected to mechanical stress.

Physical and Chemical Properties

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Nylon PA66 exhibits a high melting point of 260-265°C, which allows it to perform well in high-temperature environments. Its density is approximately 1.14 g/cm³, and it has a low coefficient of friction, making it suitable for applications requiring reduced wear. The material is resistant to many chemicals, including oils and fuels, but can be degraded by strong acids and bases. PA66 also has good electrical insulation properties, though its performance can be affected by moisture absorption.

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Main Applications

In the automotive industry, PA66 is used for under-the-hood components such as radiator end tanks, air intake manifolds, and gears. Its thermal stability and mechanical strength make it ideal for these high-stress applications. Electrical and electronic applications include connectors, circuit breakers, and insulating components. PA66's resistance to heat and electrical insulation properties are critical in these uses. Additionally, it is employed in industrial machinery for gears, bearings, and other wear-resistant parts.

Safety and Storage

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When handling PA66, it is important to avoid inhaling dust particles, which can irritate the respiratory system. Proper ventilation and the use of personal protective equipment, such as masks and gloves, are recommended. PA66 should be stored in a cool, dry environment to prevent moisture absorption, which can affect its mechanical properties. Packaging should be sealed tightly to minimize exposure to humidity and contaminants.

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B2B Procurement Guide

When procuring PA66, buyers should verify supplier certifications to ensure material quality and consistency. Requesting material data sheets (MDS) and test reports can help confirm the properties of the polymer. Consider the specific requirements of your application, such as temperature resistance, mechanical strength, and chemical compatibility. Bulk purchasing may offer cost advantages, but ensure that storage conditions are adequate to maintain material integrity.

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