Overview
Self-lubricating POM is a modified version of polyoxymethylene (POM) engineered with internal lubricants such as PTFE, silicone oil, or molybdenum disulfide (MoS₂). Unlike standard POM, it reduces friction coefficients by 30-50% without external lubricants, making it ideal for moving parts in dry or maintenance-free environments. The material retains POM's core advantages—high mechanical strength, creep resistance, and excellent machinability—while addressing its primary limitation of moderate wear resistance. It is commonly supplied as granules for injection molding or extruded rods/tubes for machining.
Physical and Chemical Properties
The base POM polymer provides a crystalline structure with 85-90% crystallinity, yielding tensile strengths of 60-70 MPa and elongation at break of 15-25%. Lubricant additives (typically 2-15% by weight) lower the dynamic coefficient of friction to 0.1-0.3, compared to 0.2-0.4 for unmodified POM. Chemically, it resists hydrocarbons, alcohols, and weak acids but is attacked by strong acids and phenols. Thermal stability allows continuous use up to 90°C (194°F), with short-term peaks to 140°C (284°F). Moisture absorption is minimal (<0.3%), ensuring dimensional stability in humid conditions.
Main Applications
In automotive systems, self-lubricating POM is used for fuel system components, seat adjusters, and window regulator gears due to its oil resistance and quiet operation. Industrial machinery employs it for conveyor chain guides, bearing cages, and pump parts where grease contamination is undesirable. Consumer applications include zipper sliders, toy gears, and kitchen appliance mechanisms. Medical-grade variants (with FDA-compliant lubricants) appear in drug delivery devices. The material's EMI shielding properties also make it suitable for electronic housings with sliding contacts.
Safety and Storage
While POM itself is non-toxic in solid form, processing dust requires ventilation to avoid respiratory irritation. Thermal degradation above 200°C releases formaldehyde gas, necessitating controlled machining temperatures and fume extraction. Storage should avoid UV exposure to prevent surface degradation. Bulk granules are typically packaged in moisture-barrier bags with a 24-month shelf life. Pre-drying at 80-110°C for 2-4 hours is recommended before processing to eliminate absorbed moisture.
B2B Procurement Guide
Key specifications to clarify include lubricant type (PTFE for lowest friction, MoS₂ for highest load capacity), filler percentage, and regulatory certifications (e.g., FDA, EU 10/2011 for food contact). For precision parts, request data on post-molding shrinkage rates (usually 1.8-2.5%). Suppliers may offer compounded grades with additional reinforcements like glass fiber for higher stiffness. Lead times vary: standard grades are often stock items, while custom formulations require 6-8 weeks. Container-load purchases (20+ tons) commonly attract 5-12% discounts.
Related Manufacturers
- 主营：[]
- 主营：PEEK、PEEK加纤、PEEK加碳纤、PEEK原料、PSU原料、PEI塑料、PEI 1000、PES加纤、PPSU塑料、PSU塑料、PSU透明料、PPS加纤、POM加纤、POM改性料、PBT加纤阻燃、PBT加纤、PA66增韧、PA66加玻纤、PMMA粉、PVDF、FEP、ETFE、大金FEP、FEP聚全氟乙烯、聚全氟乙烯
- 主营：镜片料、聚苯砜、聚丙烯、自润滑性尼龙6原料、聚甲醛、PA66、PA6、PPS、PBT、POM100p、Pom500p、Pom900p、M90-44、F20-03、pa9t、TPU、PPSU、PEEK、PVDF、PPA、PMMA、HIPS、LDPE、HDPE、赛刚pom
- 主营：PEEK、PEEK加纤、PEEK加碳纤、PEEK原料、PSU原料、PEI塑料、PEI 1000、PES加纤、PPSU塑料、PSU塑料、PSU透明料、PPS加纤、POM加纤、POM改性料、PBT加纤阻燃、PBT加纤、PA66增韧、PA66加玻纤、PMMA粉、PVDF、FEP、PFA、ETFE、PA66、PES
- 主营：塑胶颗粒、聚丙烯塑料、ABS塑料、塑胶原料、POM塑料
- 主营：POM、PA66、PC、自润滑性尼龙6原料、Pom100p、Pom500p、Pom900p、Pom100t、M90-44、F20-03、ABS747、abs757、TPU、美国杜邦pom、日本旭化成pom、日本宝理pom、ASA、COC、PEEK、PVDF、PCTG、PCTA、PA612、Pa6t、Pa9t
- 主营：优氯净、二萘酚、硫酸锌、封口蜡、甘露醇、水杨酸、硫酸锰、防染盐、正辛烷、牛磺酸、白僵菌、冰醋酸、铵明矾、肉桂醇、碳酸镁、肉桂醛、磷酸铝、戊二醛、沸石粉、硫化钠、硫化钡、硫化钙、氯化锌、黄原胶、磺酸钙
- 主营：tpu、Eva、Pom、自润滑性尼龙6原料、Pa66、Lcp、Pa6t、Pa9t、Pa6、Poe、Hdpe、Ldpe、Lldpe、Pc、Hips、Pbt、Pctg、Pc/abs、Abs、pp、Ppsu、Pps、Para、Tpee、Pa612、Pa12
- 主营：POK、聚酮、POK M330A、POK M330F、POK M630A、POK M630F、PA66、POM
- 主营：pom、杜邦pom、宝理pom、赛钢聚甲醛原料、旭化成pom、巴斯夫、pom100p、聚甲醛共聚物、pom500p、pom900p、奇美abs、浙石化、中石化、pvdf、PCTG、PARA、沙伯基础、pmma、pps、日本东丽pa66、云天化、科思创TPU、陶氏POE、埃克森美孚POE、美国苏威
- 主营：POM聚甲醛、PC聚碳酸酯、PC/ABS合金、PP聚丙烯、PE聚乙烯、PEEK聚醚醚酮
- 主营：POM美国杜邦、PA66、TPU科思创、TPU巴斯夫、PC-1100、PBT、pom100p、pom500p、Pom900p、M90-44、F20-03、日本旭化成pom、日本宝理、沙伯基础、德国巴斯夫、PEEK、PVDF、PCTG、PARA、PPA、PPSU、PMMA、PPS8670A64、PA9T、Pa612
- 主营：TPU、PC、LCP、工程料特种塑胶原料、PA6、ABS、PEEK、TPEE、PTFE、EVA、POM、PET、PMMA、PA66、PA12、PBT、COC、PPS、TPE、美国杜邦、德国科思创、沙伯基础、德国巴斯夫、日本宝理、美国苏威
- 主营：surlyn、pvdf、PA66、自润滑喷涂原料耐腐蚀、ABS、PFA、ptfe
- 主营：dupontpom、杜邦pom、耐磨pom、日本东丽插头原料PA6、聚甲醛、pomgh-25d、润滑剂、增韧pom、pomlw90f2、pomm90-44、pomtc-20l、pomlw90s2、pphg820mo、增强pom、黄卡sgs、pom密度、pomtr-10d、pa6塑胶、pom润滑、pom塑胶、pomuv270z、杜邦900d、杜邦900p、伽马线pp、celconuv90z、耐侯性pom
- 主营：PA66、PA6、PEEK、塑胶原料、PA12、PPA、PEI、TPEE、TPE、TPU、TPV、改性尼龙、PA612、PPS、LCP、PA6T、PA46、导电防静电塑料、防静电塑料、PEI塑料、耐高温塑料、耐磨塑料、PPS塑料、PEEK塑料、PA66塑料