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Nylon PA66 Natural |
Nylon 66, or 𝗣𝗼𝗹𝘆𝗮𝗺𝗶𝗱𝗲 𝟲𝟲 (PA 66), is a 𝘀𝘆𝗻𝘁𝗵𝗲𝘁𝗶𝗰 𝗽𝗼𝗹𝘆𝗺𝗲𝗿 made from two monomers: 𝗵𝗲𝘅𝗮𝗺𝗲𝘁𝗵𝘆𝗹𝗲𝗻𝗲𝗱𝗶𝗮𝗺𝗶𝗻𝗲 and 𝗮𝗱𝗶𝗽𝗶𝗰 𝗮𝗰𝗶𝗱.
Here are some key properties and characteristics:
Physical Properties
Density: 1.140 g/cm³
Water Absorption: 2.3% per day
Melting Point: 255°C (491°F)
Mechanical Properties
Ultimate Tensile Strength: 82 MPa
Yield Tensile Strength: 59 MPa
Elongation at Break: 300%
Young’s Modulus: 3.3 GPa
Rockwell Hardness: 89 M
Thermal Properties
Thermal Conductivity: 0.25 W/m·K
Specific Heat Capacity: 1670 J/kg·K
Coefficient of Thermal Expansion: 4×10⁻⁵ /°C
Applications
Nylon 66 is widely used in the automotive industry for parts like radiator end tanks, rocker covers, air intake manifolds, and oil pans. It's also used in textiles, carpets, airbags, and various molded parts due to its high mechanical strength, rigidity, and chemical resistance.
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