Disadvantages of Woven Resin Brake Bands
II. Disadvantages
High Cost
The raw materials such as high-strength fibers (e.g., aramid, brass wire) and special resins (e.g., modified phenolic resin) are expensive. Additionally, the manufacturing processes-including weaving, vacuum impregnation, and high-temperature curing-are complex. These factors result in the product price being approximately 1.5 to 2 times that of semi-metallic brake bands, leading to a relatively high initial investment.
Stringent Installation Requirements
The brake band must be accurately matched to the brake disc in terms of dimensions (diameter, radian) and operating pressure. If the installation deviation is excessive, it may cause intensified local wear, unstable friction coefficient, and even a shortened service life.
Limited High-Temperature Resistance
The upper limit of the long-term operating temperature for conventional formulations is approximately 250°C. When the temperature exceeds 300°C for a short period, the resin may soften, resulting in a decline in friction performance. For application in ultra-high-temperature working conditions (e.g., metallurgical equipment), an additional customized high-temperature-resistant formulation is required, which further increases the cost.
Sensitivity to Oil and Grease
If the surface is contaminated with lubricating oil, hydraulic oil, or other oils, the friction coefficient will decrease rapidly, leading to brake failure. Therefore, strict sealing and cleaning measures must be implemented in conjunction, which increases the complexity of maintenance.
Key Terminology Notes
编织型树脂刹车带: Woven Resin Brake Band (a specialized brake component with a woven structure reinforced by resin)
真空浸渍: Vacuum Impregnation (a process to infuse resin into the woven structure under vacuum to enhance density and performance)
高温固化: High-Temperature Curing (a heat treatment process to harden the resin and form a stable structure)
摩擦系数: Friction Coefficient (a critical parameter indicating the braking efficiency of the brake band)
