Overview
PA6T, or Polyamide 6T, is a semi-aromatic polyamide known for its exceptional heat resistance and mechanical properties. It is synthesized from hexamethylenediamine and terephthalic acid, resulting in a polymer with a high melting point and low moisture absorption. These characteristics make it ideal for demanding applications where traditional nylons like PA6 or PA66 would fail. PA6T is commonly used in industries such as automotive and electronics, where components must withstand high temperatures and harsh environments. Its ability to maintain dimensional stability under thermal stress sets it apart from other engineering plastics.
Physical and Chemical Properties
PA6T exhibits a melting point of 310-320°C, significantly higher than standard nylons, and a density of 1.12-1.14 g/cm³. Its low moisture absorption (approximately 1.5% at saturation) ensures minimal dimensional changes in humid conditions, a critical advantage for precision components. The polymer is insoluble in water and resistant to most organic solvents, oils, and fuels. Its mechanical properties include high tensile strength, stiffness, and impact resistance, even at elevated temperatures. These attributes are retained after prolonged exposure to heat, making PA6T suitable for under-the-hood automotive applications.
Main Applications
PA6T is widely used in automotive engineering for components such as intake manifolds, throttle bodies, and sensor housings, where temperatures can exceed 200°C. Its electrical insulation properties and heat resistance also make it a preferred material for connectors, sockets, and circuit breakers in electronics. In industrial settings, PA6T is employed in machinery parts subject to friction and high thermal loads, including gears, bearings, and pump components. Its chemical resistance further extends its use in chemical processing equipment and fluid-handling systems.
Safety and Storage
PA6T pellets should be stored in a dry, cool environment to prevent moisture absorption, which can affect processing and performance. Sealed containers or moisture-barrier bags are recommended for long-term storage. During processing, PA6T may release fumes at high temperatures, necessitating adequate ventilation and PPE such as respirators and gloves. Avoid direct skin contact with molten material, as it can cause thermal burns. Disposal should comply with local regulations for synthetic polymers.
B2B Procurement Guide
When procuring PA6T, prioritize suppliers with certifications like ISO 9001 to ensure consistent quality. Key specifications to verify include melt flow rate, tensile strength at high temperatures, and UL flammability ratings for electronics applications. Bulk purchases (e.g., pallets or truckloads) typically reduce costs, with prices ranging from $5-$10/kg depending on grade and volume. Request technical datasheets and samples for testing before large-scale orders. Leading manufacturers include DSM (Akulon® PA6T), DuPont (Zytel® HTN), and Toray (Arlen®).
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