Overview
Polyarylamide (PARA) is an aromatic polyamide thermoplastic engineered for high-stress environments. Developed as an alternative to metals in demanding applications, it combines the processability of plastics with performance rivaling specialty alloys. PARA's molecular structure features rigid aromatic rings, granting exceptional heat resistance (continuous use up to 200°C) and creep resistance. Unlike standard nylons, PARA maintains mechanical properties across wide temperature ranges, making it indispensable for precision components. Its development stemmed from aerospace needs in the 1970s, later expanding to automotive and industrial sectors where weight reduction and durability are critical.
Physical and Chemical Properties
PARA exhibits a unique balance of properties: tensile strength of 80–120 MPa, flexural modulus reaching 4–6 GPa, and CTE (coefficient of thermal expansion) comparable to metals. These traits stem from its semi-crystalline structure with high glass transition temperature (Tg ~280°C). The material retains 85% of room-temperature strength at 150°C. Chemically, PARA resists hydrocarbons, oils, and weak acids but may degrade in strong alkalis. Its UL94 flammability rating typically reaches V-0 without additives. Electrical properties include dielectric strength of 20–25 kV/mm and volume resistivity >1e15 Ω·cm, suitable for insulation applications.
Main Applications
In automotive engineering, PARA replaces metal in turbocharger components, transmission parts, and sensor housings due to its heat resilience and vibration damping. The electronics industry utilizes it for SMT (surface-mount technology) carriers and LED housings where dimensional stability prevents warping during reflow soldering (peak temperatures ~260°C). Aerospace applications include bushings, bearing cages, and drone components. Industrial uses encompass pump gears, valve seats, and food processing machinery parts where FDA-compliant grades are available. Emerging applications include 3D printing filaments for high-temperature prototypes.
Safety and Storage
PARA pellets are generally stable at room temperature but require dry storage (moisture content <0.1%) to prevent hydrolysis during processing. Bulk containers should be resealed after use with desiccant packs. Processors must use vented barrels at 300–350°C with adequate workshop ventilation due to potential amine emissions. PPE recommendations include heat-resistant gloves for handling molded parts and NIOSH-approved respirators when machining. Spills pose low environmental risk but should be collected to prevent slip hazards. Disposal follows local regulations for thermoplastics, with energy recovery being the preferred method.
B2B Procurement Guide
When sourcing PARA, specify key parameters: heat deflection temperature (HDT) at 1.82 MPa (target >250°C), tensile modulus, and any industry certifications (e.g., UL, FDA). For injection molding grades, verify melt flow index (MFI) matches your equipment – typically 5–30 g/10min at 330°C/2.16kg. Major producers include Solvay (Torlon), Mitsui Chemicals, and Ensinger. Consider regional suppliers for cost efficiency but audit their compounding capabilities. MOQs usually start at 500kg for standard grades. Lead times average 4–8 weeks; expedited options may incur 20–30% premiums. Request TDS (Technical Data Sheets) with ISO 9001-compliant test reports.
Related Manufacturers
- 主营：PEEK、PPSU、PEI、索尔维PARA、TPU、PC/ABS、PA66、PA6、PBT、POM、PSU、PES、PFA、PC、ABS、PP、ETFE、PCTG、PTFE、FEP、PPO、PET、PMMA、POE、EVA、PA12
- 主营：PA66、POM、PC/ABS、PARA美国苏威1521、PPS、Eva、TPU、POE、pa6t、Pa9t、ppsu、Tpu、Tpv、1180a、Peek、M800e、PVDF、Pmma、Tpee、Pom100p、Pom500p、Pom900p、Abs747、Abs757、独山子800h、PoK
- 主营：聚烯烃、机械仪器、工业壳体、升级透明聚丙烯
- 主营：工程塑料、耐高温塑料、通用塑料、增韧塑料、热塑弹性体塑料
- 主营：颗粒料、纯树脂、尼龙单6、塑料颗粒、塑料材料、索尔维c、高透明pc、中粘度pc、聚碳酸酯、塑胶颗粒、尼龙树脂、热稳定剂、塑胶制品
- 主营：玻璃矿物、POM塑胶原料、PA66塑胶原料、PA9T工程塑料、PBT工程塑料、PC塑料、PVA降解塑料、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、沙林料、TPU弹性体、TPEE塑胶原料
- 主营：PARA美国苏威1002、有机化、通用工具、防护用日用家居
- 主营：PA、PP、PE、PARA美国苏威1002、ABS、尼龙
- 主营：PC聚碳酸酯、POM塑胶原料、PA尼龙原料、ABS工程塑料、耐候ABS塑料、塑料颗粒、工程塑料原料、塑料合金、高韧性POM、PC/ABS、阻燃PC原料、高光ABS颗粒、耐磨PA6、透明PC颗粒、PA66纯树脂、注塑级POM、挤出级PC、增强尼龙PA、通用级ABS、进口POM原料、聚丙烯、赛钢、共聚POM、抗冲击PC、玻纤增强PA66
- 主营：高流动POM、PC/ABS、PA6、美国苏威PARA代理商、PA66、PP、聚丙烯、聚甲醛、赛钢、尼龙66、PBT、ABS、HDPE、LCP、PC、PPS、PMMA、PEEK、TPU、TPV、POE、EVA、PTFE、PPSU、PET
- 主营：POM、PA66、PA6、特种工程塑料、铁氟龙、TPU、PBT、PC
- 主营：pp、pa66、pa46、PARA3008、POM、PA6、HDPE、TPU、PC、PBT、ABS、PC/ABS、EVA、PPS、PC/PBT、pom100P、pom500P、ac3100、旭化成4010、M90-44、K8003、K8009、云天化M90、M90-45、F20-03、德瑞灵pom
- 主营：PP、POM、PA6、PARA美国苏威1002、PA66、TPU、LCP、POE、PC、ABS、PC/ABS、PA9T、HDPE、LDPE、PBT、PET、TPEE、PTFE、PCTG、PETG、进口PP、PPS、PA6T
- 主营：pom、pa66、abs、美国苏威PARA代理商、pa6、tpu、tpv、聚丙烯pp、pbt、HDPE、lldpe、ldpe、pc、petg、pps、pmma、poe、ppsu、ppa、hips、eva、peek、pa9t、pa6t、pvdf
- 主营：粘接剂、树脂粉、abs韩国、长纤塑料、塑料颗粒、韩国lg塑料、灰黑色塑料、防静电塑料、pvc塑胶、纯圆棒、pok韩国、asa韩国、加铁氟龙、ppa长碳纤、abs合金料、纤导电pom、pa6长碳纤、紫外线pok、分子pe粉末、加石墨填充、食品级树脂、导电防静电、酰亚胺棒材、聚酰亚胺树脂、抗紫外线塑胶