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BlogThe products involve multiple fields such as plastics, composite materials, and functional materials, and are applied in areas such as rail transit, special equipment, new energy vehicles, and machinery manufacturing.
Difference between MC nylon rod and PA6 nylon rod
2025-05-16
The main differences between MC nylon rods and PA6 nylon rods lie in their production processes, molecular weight, and performance characteristics:
MC nylon rods (monomer casting nylon) are a nylon 6 variant directly formed using an anionic polymerization process, while PA6 nylon rods are typically injection-molded products. The specific differences are as follows:
Production Process and Molecular Weight
MC nylon is produced by directly polymerizing molten caprolactam monomer in a mold, without the need for injection molding equipment. Its molecular weight is as high as 35,000 to 70,000.
PA6 uses a traditional polymerization process, with a molecular weight of only 20,000 to 30,000, requiring injection molding or extrusion.
Mechanical Properties Comparison
Tensile Strength: MC nylon reaches 70-100 MPa (approaching aluminum metal), significantly higher than ordinary PA6.
Wear Resistance: MC nylon has a low coefficient of friction of 0.1-0.3, with wear resistance more than 10 times higher than PA6.
Temperature Resistance: MC nylon has a heat deflection temperature of 150-200℃ and a short-term temperature resistance of 120-150℃, superior to ordinary PA6.
Stability and Application Scenarios
Water Absorption: MC nylon has a water absorption rate of only 0.5-1.5%, with better dimensional stability than PA6 (water absorption rate of approximately 2-3%).
Typical Applications: MC nylon is suitable for large gears and high-load bearings (such as mining machinery), while PA6 is mostly used for conventional structural components.
Diversity of Modification Types
Common modification types of MC nylon rods include MC901 (high toughness), self-lubricating type (PA6+oil), and molybdenum disulfide enhanced type, expanding its application scenarios.
PA6 modifications focus more on fiber reinforcement or filler improvements, differing from the modification focus of MC.
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