MC 901 Rod Casting Nylon Rod Solid Bar MC Rod
MC Nylon Rod (Monomer Casting Nylon Rod) is a rod-shaped polymer material that is directly cast through anionic polymerization reaction using caprolactam (C₆H₁₁NO) or hexamethylenediamine and adipic acid as monomer raw materials. Unlike extruded PA6/PA66 rods, MC nylon achieves highly directional molecular chain arrangement through one-step polymerization, with a crystallinity of up to 70% - 90% (PA6 crystallinity is about 50% - 60%), giving the material the unique properties of "ultra-high strength, wear resistance, and self-lubrication". Its density is 1.14 - 1.15 g/cm³, and its tensile strength can reach 80 - 120 MPa (PA6 is only 50 - 70 MPa), making it an ideal engineering plastic to replace metals (such as aluminum alloys and zinc alloys).
Unlike common injection-molded nylons (such as PA6 and PA66), MC nylon requires no initiators or catalysts. Instead, it uses an alkali (such as sodium hydroxide) as an activator to initiate ring-opening polymerization of caprolactam under high temperature and pressure, resulting in a polycaprolactam (PA6) structure with a higher molecular weight (typically 30,000-50,000) and improved crystallinity. MC nylon rods feature a smooth, dense surface (roughness Ra <0.1μm) and a uniform color (commonly blue or light yellow, with black and other colors available for customization). Diameters typically range from 8mm to 500mm, and lengths can be customized upon request (typically 1 meter).
Product Advantages
Ultra-High Strength and Wear Resistance
Casting Nylon Rod's ultra-high strength and high wear resistance make it a core component for heavy-duty applications such as mining machinery and metallurgical equipment. For example, in the rollers of coal mine conveyor belts, roller shells made of MC nylon rod can withstand the constant friction of ore and coal, with a service life three times that of ordinary metal rollers. In the bearing seats of rolling mills in metallurgical plants, its high rigidity and fatigue resistance ensure long-term stable operation. In the gear transmission system of mining crushers, MC nylon rod can replace metal gears while still withstanding high torque loads.
High-Temperature Resistance and Dimensional Stability
MC Nylon Rod's high heat deflection temperature and low thermal expansion coefficient make it an excellent performer in high-temperature environments. For example, in automotive engine cooling fan blades, MC nylon rod's ability to withstand short-term temperatures of 160°C ensures blade deformation in high-temperature environments. In chemical reactor agitators, its stable long-term operating temperature range of -40°C to 120°C ensures efficient mixing. In plastic extruder screw components, MC nylon rod's low thermal expansion coefficient ensures a stable clearance between the screw and the barrel.
Chemical Resistance and Self-Lubrication
MC nylon rod is stable to most acid, alkali, and salt solutions, as well as organic solvents, and exhibits self-lubricating properties, making it an ideal material for chemical storage tanks and food processing equipment. For example, in chemical storage tank linings storing 30% sodium hydroxide solution, MC nylon rod's chemical resistance significantly extends tank life. In conveyor belt guides in food processing plants, its self-lubrication and acid and alkali resistance ensure food safety. In plastic pipe connectors in pharmaceutical plants, MC nylon rod's non-toxicity (FDA-compliant) and chemical resistance ensure safe pharmaceutical production.
Ease of Processing and Low Cost
The flexibility of the casting process and ease of machining make MC Nylon Rod significantly more efficient than injection-molded nylon. For example, in the manufacture of heavy machinery bearing housings, the casting cycle of MC Nylon Rod is 30%-50% shorter than that of injection-molded PA6. In the machining of gears for mining equipment, ordinary high-speed steel tools can be used for turning, at a processing cost of only one-fifth that of metal gears. In the large-scale production of consumer plastic products, MC Nylon Rod waste can be partially recycled, resulting in an overall cost lower than that of engineering plastics.
