With the upgrading of extreme environment protection requirements in fields such as aerospace and high-end manufacturing, solid resin high-temperature protective coatings are accelerating their evolution towards "high-performance, function-integrated, and green sustainable" directions. Material innovation and technological breakthroughs have become the core driving forces. 
In terms of the ultimate breakthrough in high-temperature resistance, the modification of traditional thermosetting resins and the development of new resins are carried out simultaneously. By introducing ceramic powders (such as zirconium carbide and silicon carbide) or carbon-based nanoparticles (carbon nanotubes and carbon black) into epoxy resins, phenolic resins, etc., the coating's ablative resistance can be significantly enhanced. Some modified materials can withstand extreme temperatures above 2400℃, with the linear ablation rate reduced by over 50%. At the same time, the breakthrough in dynamic covalent bond technology has solved the industry pain point of traditional thermosetting resins being unable to be reshaped after curing. 
Function integration has become a key direction for expanding application scenarios. In the future, coatings will no longer be limited to single high-temperature protection but will integrate multiple functions such as wear resistance, corrosion resistance, and insulation. For example, in the aerospace field, the coatings need to withstand aerodynamic heat, high-speed particle erosion, and chemical medium erosion. Through the collaborative design of resin matrix and carbon fibers, silica, etc., "thermal insulation - corrosion resistance - reinforcement" integrated protection can be achieved. In the electronic packaging field, the coatings are promoting the development towards "high-temperature stability + efficient heat dissipation" composite functions to meet the heat dissipation requirements of high-density electronic components. 
Green sustainable development is an irreversible trend in the industry. On one hand, the research and development of bio-based resins have made progress. Resins prepared by techniques such as acetal chemistry are degradable and maintain dimensional stability at 100℃, and can be recycled and reused under mild conditions. On the other hand, low-VOC (volatile organic compounds) curing processes are gradually becoming widespread. Powder coatings and other solvent-free systems, due to their environmental advantages, have a continuously increasing proportion of applications in the automotive, rail transportation, and other fields, balancing protection performance and ecological friendliness.