High temperature performance
The most important feature of phenolic resins is their high temperature resistance, which maintains their structural integrity and dimensional stability even at very high temperatures. For this reason, phenolic resins have been used in high temperature applications such as refractory materials, friction materials, binders and foundry industries. Phenolic resin refractory

Bond strength
An important application of phenolic resins is as a binder. Phenolic resins are multifunctional and compatible with a wide variety of organic and inorganic fillers. The correct phenolic resin is designed for very fast wetting. And after cross-linking, it can provide the required machine for grinding tools, refractory materials, friction materials and bakelite powder.
Mechanical strength, heat resistance and electrical properties.
Water-soluble phenolic resins or alcohol-soluble phenolic resins are used to impregnate paper, cotton, glass, asbestos and the like to provide them with mechanical strength, electrical properties and the like. Typical examples include electrical and mechanical laminate manufacturing, clutch plates and filter paper for automotive filters.

High residual carbon ratio
At an inert gas temperature of about 1000 ° C, the phenolic resin produces a high residual carbon, which helps maintain the structural stability of the phenolic resin. This property of phenolic resin is also an important reason why it can be used in the field of refractory materials.

Low smoke and low toxicity
The phenolic resin system has the advantage of low smoke and low toxicity compared to other resin systems. In the case of combustion, the phenolic resin system produced by scientific formulation will slowly decompose to produce hydrogen, hydrocarbons, water vapor and carbon oxides. The smoke generated during the decomposition process is relatively small and the toxicity is relatively low. These characteristics make phenolic resins suitable for use in areas where public transportation and safety are very demanding, such as mines, fences and construction.

Chemical resistance
The crosslinked phenolic resin resists the decomposition of any chemical. For example, gasoline, petroleum, alcohol, ethylene glycol and various hydrocarbons.

Heat treatment
The heat treatment increases the glass transition temperature of the cured resin, and the properties of the resin can be further improved. The glass transition temperature is similar to that of a crystalline solid such as polypropylene. The initial glass transition temperature of the phenolic resin is related to the curing temperature used in the initial curing stage. The heat treatment process can improve the fluidity of the crosslinked resin to promote the reaction, and also remove residual volatile phenol, reduce shrinkage, enhance dimensional stability, hardness and high temperature strength. At the same time, the resin also tends to shrink and become brittle. The resin post-treatment heating profile will depend on the initial curing conditions of the resin and the resin system.