Colored Acetal Delrin Sheet POM Plate
4 week ago
Product details
Colored Acetal Delrin Sheet POM Plate
Green POM Sheet is a solid plastic sheet with a green surface, made from polyoxymethylene (POM) as the base material through extrusion or molding processes.
POM itself is a highly crystalline engineering plastic, and the "green" color is usually achieved by adding environmentally friendly masterbatches (a non-performance-affecting dyeing process). This retains POM's core properties such as high strength, low friction, and dimensional stability, while also meeting the differentiation needs of specific scenarios (such as industrial markings and food-grade visualization).
Core Performance Characteristics
Performance Advantages of the Base Material (POM)
- Ultra-high Rigidity & Strength: Tensile strength reaches 60-80MPa, high flexural strength, suitable for structural components subjected to small to medium loads.
- Extremely Low Coefficient of Friction (approximately 0.2-0.3): Self-lubricating properties are close to PTFE (but more wear-resistant), suitable for long-term friction scenarios.
- Excellent Dimensional Stability: Low coefficient of thermal expansion, high machining accuracy (tolerance up to ±0.05mm), suitable for precision transmission or mating components.
- High Wear Resistance: High surface hardness (Rockwell hardness M94), wear life far exceeds that of general-purpose plastics such as PA and ABS.
- Excellent Fatigue Resistance: Not easily deformed under repeated loads, suitable for dynamic friction components (such as gears and pulleys).
Significance of Green Characterization
- Visual Distinction: Green is commonly used in industrial settings to identify "wear-resistant parts," "food-grade candidate materials," or "environmentally friendly batches" (non-functional, merely color marking).
- Environmental Compliance: For food-grade applications, green POM must ensure that the masterbatch meets FDA/EFSA food contact safety standards (non-toxic and non-migrating).
Limitations
- Weather Resistance: Moderate; slight yellowing is likely with prolonged UV exposure (UV stabilizers are recommended for outdoor use, but may affect the green color).
- Notch Sensitivity: Sharp notches can cause stress concentration (burrs or sharp corners should be avoided during processing).
- Extremely Low Water Absorption (<0.2%): Good dimensional stability, but caution is still needed in extremely humid environments (though the impact on performance is minimal).
Typical Application Scenarios
- Precision Machinery: Green POM sheets are often processed into self-lubricating transmission components such as gears, bearings, guide rails, sliders, and locating pins (utilizing their low friction and high rigidity).
- Food/Medical Equipment: If food-grade certification is obtained (FDA/EFSA proof from the supplier is required), it can be used for food conveyor belt guides and auxiliary structures for medical devices (green may serve as a hygiene visual identifier).
- Automated equipment: Used as wear-resistant liners, guide rails, and fixture positioning blocks (replacing metal for weight reduction while maintaining high precision).
- Industrial identification parts: Green appearance used to distinguish "wear-resistant areas" or "special function components" (such as green protective plates on equipment).
Selection Recommendations
Scenarios where green POM sheets are preferred:
- Precision components requiring high rigidity and low friction (e.g., small gears, guide rails), where quick material identification via color is desired.
- Food/medical industries requiring visually hygienic materials (green can be a supplementary choice for non-toxic labeling, but color masterbatch compliance must be ensured).
- Industrial equipment requiring wear-resistant liners/guides, with aesthetic or zone marking requirements (e.g., green protective layers).
Scenarios requiring caution:
- Long-term outdoor exposure: Green may yellow without added UV stabilizers (black or UV-modified POM is recommended).
- Extreme loads or high temperatures: Long-term POM operating temperature is recommended <100°C (short-term withstand 120°C). Overloads can easily deform (PA66 or PBT should be selected for extremely high loads).
- High toughness requirements: POM is slightly more brittle than PA (lower impact strength). For severe impact scenarios, it is recommended to incorporate structural design for cushioning.
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