Advanced silicone additives for reinforced and non-reinforced polyamide (PA) deliver excellent tribology performance and processing ease, while overcoming the drawbacks of polytetrafluoroethylene (PTFE).
Glass-filled PA compounds are widely used in automotive parts, industrial gears and bearings and moving parts in appliances and peripherals. These high-stress applications require a low coefficient of friction (COF), a property that has traditionally been supplied by PTFE additives. However, PTFE additives can:
• Negatively impact the mechanical properties of the material
• Increase the density of the material
• Pose a potential toxicity risk
Meanwhile, traditional PA materials – particularly glass-filled compounds – are known for processability issues, particularly higher extruder torque and reduced throughput. However, Dow Corning now offers two advanced silicone additives that solve these performance and processing issues for extruded and injection molded PA:
• Dow Corning® 31-441 Additive is a solid silicone polymer that excels at improving productivity through extrusion efficiency by decreasing screw torque and reducing internal melt temperatures. It delivers slip performance at lower loadings than PTFE, so mechanical properties are maintained.
• Dow Corning® HMB-1103 Masterbatch for PA systems is the company’s best-in-class tribology modifier for highly demanding applications that require a long-term reduction of COF and wear resistance. It is also effective at lower loadings than PTFE.
This webinar will describe the challenges of optimizing the properties and processing of PA resins and compounds used in moving parts and the advantages of new-generation silicone additives. Topics will include:
• Common challenges faced by customers using PA resins and compounds
• Test data comparing Dow Corning technology with PTFE additives
• Measurable improvements in throughput and cost-effectiveness with silicone additives
The views, opinions and technical analyses presented here are those of the author, and are not necessarily those of UL, ULProspector.com or Knowledge.ULProspector.com. While the editors of this site make every effort to verify the accuracy of its content, we assume no responsibility for errors made by the author, editorial staff or any other contributor. All content is subject to copyright and may not be reproduced without prior authorization from Prospector.