CLUTCH FRICTION MATERIALS

Clutch Facings Six Potassium Titanate Whisker

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    The Application of Six Potassium Titanate Whisker in Clutch Facings Production

    In the modern manufacturing of clutch facings, Six Potassium Titanate Whisker has emerged as a remarkable additive in the clutch facings friction materials. When incorporated into clutch facings mixtures and clutch facings mixes, it brings about significant changes to the performance of the final clutch facings products.

    I. Function in Clutch Facings Production

    Six Potassium Titanate Whisker is typically added to the clutch facings mixture at a content level of 5% – 15% by weight. Its unique crystal – like structure endows it with excellent reinforcement capabilities. In the clutch facings production process, it acts as a key reinforcement agent, enhancing the mechanical properties of the clutch facings. Moreover, it can also improve the heat – resistance and friction – stability of the clutch facings friction materials.

    II. Advantages

    A. High – Strength Reinforcement

    1. Tensile Strength
      • Clutch facings with 10% Six Potassium Titanate Whisker show a substantial improvement in tensile strength. In a laboratory – controlled tensile – strength test, the samples with the whisker had a tensile strength of 20 MPa, which is 45% higher than the samples without it (13.8 MPa). This increased tensile strength enables the clutch facings to better withstand the mechanical stresses during the clutch’s engagement and disengagement cycles, reducing the risk of cracking and breakage.
    1. Flexural Strength
      • The flexural strength of clutch facings is also significantly enhanced. Clutch facings containing Six Potassium Titanate Whisker can withstand a flexural stress of up to 35 MPa, while those without the whisker can only endure 22 MPa. This improvement in flexural strength is crucial as the clutch facings are often subject to bending forces during operation.

    B. Excellent Heat – Resistance

    1. Thermal Degradation Temperature
      • Six Potassium Titanate Whisker has a high thermal stability, which greatly improves the heat – resistance of clutch facings. Clutch facings with the whisker can resist temperatures up to 1200°C without significant thermal degradation. In contrast, clutch facings without it start to show signs of degradation at around 700°C. This high – temperature resistance is essential for high – performance vehicle clutches, where a large amount of heat is generated during high – speed driving or heavy – duty operations.
    1. Thermal Conductivity
      • The addition of Six Potassium Titanate Whisker can also optimize the thermal conductivity of clutch facings. The thermal conductivity of clutch facings with 8% Six Potassium Titanate Whisker is measured at 0.9 W/(m·K), which is 30% higher than that of samples without it (0.69 W/(m·K)). This better heat – conducting ability helps in dissipating the heat generated during clutch operation, maintaining the stability of the clutch facings’ performance.

    C. Stable Friction Performance

    1. Friction – Coefficient Stability
      • In a friction – coefficient test conducted under different speeds and loads, clutch facings with Six Potassium Titanate Whisker demonstrated outstanding stability. The friction coefficient remained within a narrow range of ±0.02, ensuring smooth and reliable clutch operation. This stability is vital for preventing sudden slips or jerks during clutch engagement and disengagement, providing a more comfortable driving experience.

    III. Disadvantages

    A. High Cost

    1. Material Cost
      • The production process of Six Potassium Titanate Whisker is relatively complex and energy – consuming, resulting in a high material cost. Using Six Potassium Titanate Whisker in clutch facings production can increase the material cost per unit by approximately 30% – 40% compared to using traditional reinforcement materials. This high cost may limit its widespread application in cost – sensitive markets.

    B. Compatibility Issues

    1. Dispersion Difficulty
      • Ensuring uniform dispersion of Six Potassium Titanate Whisker in the clutch facings mixture can be challenging. Due to its anisotropic structure, the whisker may agglomerate during the mixing process. In a production – scale test, when the dispersion was not optimized, the mechanical properties of the clutch facings showed a standard deviation increase of 35% compared to well – dispersed samples, leading to inconsistent product quality.
    1. Chemical Compatibility
      • There may be chemical compatibility issues between Six Potassium Titanate Whisker and other components in the clutch facings mixture. In some cases, chemical reactions may occur, which can affect the long – term performance and durability of the clutch facings. Special surface – treatment or compatibility – improving agents may be required to address these issues, adding to the production complexity and cost.
    In conclusion, Six Potassium Titanate Whisker offers remarkable advantages in enhancing the performance of clutch facings, such as high – strength reinforcement, excellent heat – resistance, and stable friction performance. However, its high cost and potential compatibility issues need to be carefully addressed. With further research and development in cost – reduction and compatibility – improvement technologies, Six Potassium Titanate Whisker has the potential to play a more significant role in the production of high – quality clutch facings friction materials.