POM Rods Made From High-purity Polyoxymethylene Raw Materials with High Hardness and Rigidity1
4 month ago
Product details
High Purity Polyoxymethylene POM Rods
POM rod (Polyoxymethylene Rod) is a thermoplastic engineering plastic rod made of polyoxymethylene (POM) resin through extrusion process. It is known as "Super Steel" because it has strength, rigidity, wear resistance and dimensional stability comparable to metal, while also having the lightweight and easy processing properties of plastic. It is widely used in the fields of automobiles, electronics, precision machinery, medical equipment, etc.
With its "super steel" characteristics (high strength, high rigidity, high wear resistance) and processing flexibility (easy to machine, no moisture absorption and deformation), POM rods have become the preferred material for metal replacement in the fields of precision machinery, automobiles, electronics, etc. Through formula modification (such as glass fiber reinforcement, flame retardant, antistatic) and processing technology optimization (such as precision turning, injection molding), it continues to expand high-end application scenarios. Driven by the demand for lightweight, high precision and long life, the market demand has grown steadily.
Since the industrial production of POM rods in the 1960s, they have been widely used in the automotive, electronics, and machinery manufacturing industries due to their high rigidity, low friction coefficient, excellent fatigue resistance, and dimensional stability. They have become a high-end material solution to replace metals (such as zinc alloys and aluminum alloys) and engineering plastics (such as PA6 and PBT).
Data Sheet
| Properties | Standard | Unit | Test Data |
| Specific gravity | ISO 1183 | g/cm3 | 1.41 |
| Water absorption | ISO 62 | % | 0.2 |
| Flammability | UL94 | HB | |
| Mechancial Properties | |||
| Yield stress | ISO 527 | Mpa | 68.5 |
| Elongation at break | ISO 527 | % | 10 |
| Tensile modulus of elasticity | ISO 527 | Mpa | 2890 |
| Notched impact strength | ISO 179 | kJ/m2 | 6.93 |
| Flexural strength | ISO 178 | Mpa | 104 |
| Flexural modulus | ISO 178 | kJ/m2 | 3270 |
| Shore hardness | ISO 868 | scale D | 88 |
POM rod is a highly crystalline thermoplastic engineering plastic rod. Its base resin is polymerized from formaldehyde (homopolymer POM-H or copolymer POM-C), and is formed into a rod-shaped material by extrusion process:
- Homopolymer (POM-H): higher crystallinity (>75%), better strength, rigidity, and heat resistance, but slightly worse impact resistance and processing fluidity;
- Copolymer (POM-C): by introducing comonomers (such as ethylene oxide) to adjust the molecular chain structure, the impact resistance and processing fluidity are better, but the strength and heat resistance are slightly lower than homopolymer.
Typical morphological characteristics:
Diameter range: 8-500mm;
Length: standard length 1m;
Color: white, black.
Specific application areas and components:
Precision machinery and automobile manufacturing
Gears and bearings: automotive air conditioning compressor gears, power tool reduction gears, industrial sewing machine bearings
Bushings and bushings: engine valve tappet bushings, gearbox shift fork bushings
Connectors and fasteners: automotive door lock buckles, seat adjustment bolts
Electronics and home appliances
Switches and connectors: home appliance power switch levers, electronic connector pins
Gearbox components: printer/copier paper feed gears, sweeping robot drive gears
Structural parts: power tool handles, small appliance housing support frames
Industrial equipment and automation
Conveying system components: automated production line guide rails, conveyor belt rollers
Valve and pump body components: chemical pump seals, valve stems
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