Modified phenolics are specifically used for bonding which of the following?

Modified phenolic resins are known for their excellent thermal stability, mechanical strength, and resistance to wear and heat, making them particularly suitable for bonding applications that involve high-stress and high-temperature environments. Brake linings made of friction materials need to withstand extreme conditions, including high pressures and temperatures generated during braking.

In this context, the bond between brake linings and metal shoes must be robust enough to resist wear and thermal degradation over time. Modified phenolics provide the needed adhesion, maintaining performance reliability even under high operational stress. Their properties effectively enhance the durability and safety of braking systems, establishing their preference for this specific application.

Other materials mentioned, such as cloth to wood, plastic parts together, and glass and ceramic, may involve different types of bonding agents better suited for their unique properties and requirements. Each of these applications typically requires adhesives that can accommodate specific environmental conditions or mechanical stresses, which is not the primary strength of modified phenolics compared to their performance in brake linings.