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Mechanical
Bost demonstrates the applications of special engineering plastics and engineering plastics in mechanical industry, providing engineered solutions for wear-resistant, high-temperature, and high-performance mechanical products.
Key Trends & Advantages
By leveraging these materials, mechanical engineers enhance performance, reduce costs, and improve design flexibility while addressing environmental challenges.
Lightweighting
Specialty plastics like PEEK and PPS replace metals, reducing component weight by 40–60% while maintaining strength.
Wear Resistance
Nylon and POM minimize friction in moving parts, lowering energy consumption and noise.
Corrosion Resistance
PPS and PTFE excel in harsh chemical environments, ideal for chemical processing and marine applications.
Sustainability
Recyclable plastics (e.g., PC, ABS) and bio-based nylons (e.g., PA610) are increasingly used to meet eco-friendly standards.
Engineering Plastics
Engineering plastics offer a balance of mechanical strength, cost-effectiveness, and ease of processing, making them ideal for non-critical but structurally demanding mechanical components.
Nylon (PA)
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Applications
Gears, bearings, and fasteners in automotive transmissions and industrial machinery.
Why
High tensile strength, abrasion resistance, and self-lubricating properties reduce friction and noise.
Example
Nylon gears in automotive manual transmissions, such as synchronizer rings, which withstand repetitive loads while reducing weight by 30% compared to metal.
Image
A precision-machined nylon gear with tooth profiles optimized for smooth meshing, demonstrating its lightweight yet durable design.
Polyoxymethylene (POM)
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Applications
Mechanical couplings, conveyor belts, and sliding components.
Why
Exceptional dimensional stability, low friction, and resistance to fatigue under cyclic loading.
Example
POM gears in automotive windshield wiper systems, ensuring quiet operation and long-term reliability in harsh weather conditions.
Image
A compact POM gear with a smooth surface finish, designed for high-speed rotation in a wiper motor assembly.
Polycarbonate (PC)
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Applications
Machine guards, protective covers, and transparent enclosures.
Why
High impact resistance (e.g., withstands drops from 1.5 meters) and optical clarity for safety monitoring.
Example
PC guards on industrial robots, providing visibility while protecting operators from moving parts.
Image
A curved PC guard with anti-scratch coating, securely mounted around a robotic arm.
Acrylonitrile Butadiene Styrene (ABS)
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Applications
Tool handles, control knobs, and structural brackets.
Why
Easy to mold, cost-effective, and provides a balance of rigidity and impact resistance.
Example
ABS handles on power tools, offering ergonomic grip and resistance to oil and grease.
Image
A textured ABS tool handle with reinforced ribs for added strength.
Special Engineering Plastics
Special engineering plastics excel in extreme conditions, including high temperatures, corrosive environments, and heavy loads.
Polyether Ether Ketone (PEEK)
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Applications
High-temperature bearings, pump seals, and aerospace structural components.
Why
Exceptional heat resistance (up to 260°C), chemical inertness, and strength comparable to aluminum.
Example
PEEK bearings in oil rig machinery, operating reliably in 200°C environments with minimal lubrication.
Image
A precision-machined PEEK bearing with a grooved inner ring, designed for high-pressure rotational applications.
Polyphenylene Sulfide (PPS)
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Applications
Chemical pump impellers, valve components, and electrical connectors.
Why
High thermal stability (up to 280°C), flame retardancy (UL94 V-0), and resistance to acids and solvents.
Example
PPS impellers in industrial chemical pumps, maintaining efficiency even when handling corrosive fluids.
Image
A PPS impeller with curved blades, showcasing its smooth surface and chemical-resistant coating.
Polytetrafluoroethylene (PTFE)
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Applications
Seals, gaskets, and non-stick coatings for moving parts.
Why
Ultra-low friction coefficient (0.04–0.1), chemical resistance, and temperature stability (-200°C to 260°C).
Example
PTFE-coated piston rings in hydraulic systems, reducing energy loss and extending service life.
Image
A silver PTFE seal ring with a spiral design, ensuring leak-proof performance under high pressure.
Polyimide (PI)
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Applications
High-temperature bushings, turbine blade coatings, and aerospace fasteners.
Why
Exceptional thermal stability (up to 400°C), resistance to oxidation, and low thermal expansion.
Example
PI-coated turbine blades in jet engines, enhancing durability and reducing maintenance intervals.
Image
A turbine blade with a thin, protective PI coating, illustrating its heat-resistant properties.
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