Overview
Delrin (Polyoxymethylene or POM) is a semi-crystalline thermoplastic renowned for its high mechanical strength, dimensional stability, and low friction properties. Developed by DuPont in the 1950s, it is widely used in precision engineering applications where metal alternatives are impractical. POM is available in homopolymer and copolymer forms, each offering distinct thermal and chemical resistance characteristics. As a robust material, Delrin is often chosen for its ability to withstand repetitive stress and harsh environments. Its applications span industries such as automotive, electronics, and medical devices, where precision and durability are paramount. The material's ease of machining and resistance to moisture further enhance its versatility.
Physical and Chemical Properties
Delrin exhibits a unique combination of properties, including a high tensile strength (up to 70 MPa) and a low coefficient of friction (comparable to PTFE). Its crystalline structure contributes to excellent creep resistance and fatigue endurance, making it ideal for dynamic load-bearing parts like gears and bushings. Chemically, POM is resistant to hydrocarbons, alcohols, and weak acids but degrades in strong acids, bases, and UV exposure unless stabilized. Its thermal stability is limited to continuous use below 85°C (homopolymer) or 100°C (copolymer). Moisture absorption is minimal (0.2–0.3%), ensuring dimensional stability in humid conditions.
Main Applications
Delrin's primary use is in precision mechanical components, such as gears, conveyor belts, and fasteners, where its self-lubricating properties reduce wear and noise. In the automotive sector, it is used for fuel system parts, seatbelt mechanisms, and window regulators due to its lightweight and durability. Consumer electronics leverage POM for keyboard switches, zippers, and hinges. Medical applications include inhaler components and surgical instruments, where biocompatibility grades are available. Its machinability also makes it a favorite for prototyping and custom parts in industrial automation.
Safety and Storage
While Delrin is generally safe to handle, precautions are necessary during processing. Melting or laser-cutting POM releases formaldehyde, requiring adequate ventilation. Dust from machining should be controlled to prevent respiratory irritation. Storage recommendations include keeping the material in sealed containers to avoid moisture absorption (though minimal) and away from oxidizers. Bulk quantities should be stored on pallets in a cool, dry environment. Fire hazards are low, but combustion produces toxic gases, necessitating Class B fire extinguishers.
B2B Procurement Guide
When sourcing Delrin, specify whether homopolymer (higher strength) or copolymer (better thermal/chemical resistance) is required. Key suppliers include DuPont, Celanese, and Mitsubishi Engineering-Plastics. Prices vary by grade, with glass-filled or lubricated versions commanding premiums. For large orders, negotiate bulk discounts and confirm lead times, as POM production is energy-intensive. Certifications like FDA (for food contact) or ISO 10993 (medical use) may be required. Always request Material Data Sheets (MSDS) and test samples to verify properties like wear resistance or color stability.
Related Manufacturers
- 主营：[]
- 主营：塑胶原料、通用塑料、特种塑料
- 主营：PP、POM、pc、PA66、POE、ABS、PPS、PBT、PA6
- 主营：pc、pps、PTFE
- 主营：[]
- 主营：聚苯并咪唑、全氟无定型氟树脂、聚酰亚胺、铁氟龙材料、PFA材料、导电材料/防静电材料、PA66材料、ETFE材料、ECTFE材料、THV材料、Vespel材料、Torlon材料、PEEK材料、热塑性弹性体材料、全氟树脂溶液、科慕AF系列、PBI溶液、PI液体(聚酰亚胺清漆)、聚酰亚胺薄膜、杜邦PFA、耐磨塑料、PBI棒材/板材、大金PFA、旭硝子PFA
- 主营：专用注塑原料
- 主营：改性塑料、塑胶原料、改性ABS、改性PC/ABS、PC、POM、改性PA6、改性PA66、PPO、阻燃合金、阻燃ABS、PC/ABS、PP、PA全系、改性PET、改性PC、ABS、PA6、PA66、PBT、HDPE、LDPE、PPS、PMMA、GPPS
- 主营：PA66、POM、PA12、pom材料、PP、ABS、PC、EVA、LDPE、PA6、PPS、PA、PET
- 主营：塑料原料、PP、PA66、pom塑料、TPEE、PC
- 主营：PP、ABS、PA66、材料POM、TPU、TPV、PBT、PC、POM、PPO、PC/ABS
- 主营：塑料原料、工程塑料、美国杜邦、pom900p、日本宝理pom、PBT、德国巴斯夫、德国朗盛、PA66、PC+ABS、PET、韩国LG、日本旭化成、PC、尼龙PA、POM、PPO、PPS、奇美abs、PA6、TPU、POM100p、POM500p、pc1100、pc/abs
- 主营：镜片料、聚苯砜、聚丙烯、赛刚pom、聚甲醛、PA66、PA6、PPS、PBT、POM100p、Pom500p、Pom900p、M90-44、F20-03、pa9t、TPU、PPSU、PEEK、PVDF、PPA、PMMA、HIPS、LDPE、HDPE
- 主营：EVA、PP、PC、pom材料、PA6、PA66、POM聚甲醛、ABS、PPS、PE、PETG、PMMA、PBT
- 主营：POE、EVA、PA66、pom塑料、PE、ABS、PP、LDPE、HDPE、PC、PA6、POM、PEEK、PVDF、PBT
- 主营：POM、PA66、PC、美国杜邦pom、日本旭化成pom、日本宝理pom、Pom100p、Pom500p、Pom900p、Pom100t、M90-44、F20-03、ABS747、abs757、TPU、ASA、COC、PEEK、PVDF、PCTG、PCTA、PA612、Pa6t、Pa9t
- 主营：pa66、TPU原料、PA6尼龙、pom赛钢、杜邦pom、宝理pom、旭化成pom、杜邦pom500p、德瑞灵pom、瑞士EMS原料、巴斯夫pa66、科思创TPU、PC/ABS、聚丙烯pp、PA6T、日本宝理PPS、TPV、PBT、TPU1185A10、PC540、M90-44、F20-03、POM100P、埃克森美孚poe、聚碳酸酯PC
- 主营：塑胶原料、PP聚丙烯、PE聚乙烯、EVA醋酸乙烯、PA尼龙6/66、PC聚碳酸酯、POM聚甲醛、ABS、PBT工程塑料、工程塑料、基础塑料、电线电缆、聚苯硫醚、电器外壳、电动工具、家用电器、电气外壳、外壳颗粒、汽车部件、熔喷料、家电部件、电子电器外壳
- 主营：Pa66、通用塑料、工程塑料、pom塑料、聚丙烯、聚乙烯、POM、聚甲醛、亚克力、弹性体、EVA
- 主营：POM、ABS、PC、PP、德国巴斯夫、日本宝理、韩国SK、PA66
- 主营：玻璃矿物、POM塑胶原料、PA66塑胶原料、LCP塑胶原料、PA12塑胶原料、PA6塑胶原料、ABS塑胶原料、PC/ABS塑胶原料、PPO塑胶原料、PMMA亚克力、PA9T工程塑料、PBT工程塑料、沙林料、PC塑料、PVA降解塑料、TPU弹性体、TPEE塑胶原料