Polyimide resin Powder manufactured by Yangchen Tech plays a critical role in advanced friction materials by serving as the high-performance binder or matrix that holds together reinforcing fibers and fillers. Its outstanding thermal stability, wear resistance, and ability to maintain a stable coefficient of friction under changing loads and temperatures make it an ideal replacement for conventional phenolic systems in demanding applications.
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High-Temperature Resistance & Thermal Stability
Friction interfaces—such as brake pads and clutch plates—can reach temperatures above 300 °C during heavy or repeated braking. Polyimide resin maintains mechanical integrity and frictional properties at these temperatures, preventing “fade” (loss of braking performance) and extending service life. -
Abrasion & Wear Resistance
The inherently high hardness and chemical resistance of polyimide help reduce material loss under sliding contact. Composites formulated with polyimide binders show lower wear rates compared to phenolic-based friction materials, translating to longer intervals between replacements. -
Stable Coefficient of Friction
Polyimide-based composites exhibit minimal variation in friction coefficient across a wide temperature range, ensuring predictable braking or clutch engagement without judder, chatter, or noise. Modifications—such as adding graphite or ceramic fillers—can further tune friction levels for specific applications. -
Applications
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Automotive & Heavy-Duty Brakes: Pads and linings for performance vehicles, trucks, and off-road equipment that demand high fade resistance.
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Aerospace Brake Systems: Carbon-carbon or carbon-ceramic discs often use polyimide matrix composites for landing-gear and wheel brakes, where weight savings and thermal endurance are paramount.
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Industrial Machinery: Clutches and brakes in stamping presses, mining equipment, and wind-power generators benefit from the resin’s durability under high loads.
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Grinding Wheels & Cutting Tools: As a binder for superabrasive (diamond, CBN) wheels, polyimide delivers improved wheel life and cutting consistency at elevated operating temperatures.
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Processing & Fabrication
Typical manufacturing methods include hot molding, cold/hot isostatic pressing, and even advanced techniques like injection molding or 3D printing of pre-ceramic precursors. These processes allow precise control of resin/filler ratios and part geometry.
When you need friction materials that can withstand extreme heat, deliver consistent braking performance, and offer superior wear life, polyimide resin — often filled with fibers (e.g., aramid, carbon) and solid lubricants (e.g., graphite, MoS₂) — is the binder of choice for next-generation brake pads, clutch facings, industrial brakes, and superabrasive tools.
