Important properties of phenolic resin

High performance 

    Phenolic resin is the most important feature is the high temperature resistance, even at very high temperatures, can maintain the stability of the integrity of the structure and size. Is for this reason, the phenolic resin was used in some high temperature fields, such as refractory material, friction material, binder and casting industry. Refractory phenolic resin bond strength is an important application of the phenolic resin as binder. Phenolic resin is a kind of multi-functional, with a variety of organic and inorganic filler can compatible material. Design proper phenolic resin, wetting particularly fast. And after crosslinking can be abrasive, fire-proof material, friction material, and provide the required mechanical strength, bakelite heat-resistant properties and electric properties. Water soluble phenolic resin or alcohol soluble phenolic resin was used to impregnated paper, cloth, glass, asbestos and other similar material for them to provide mechanical strength, electrical, etc. Typical examples include electrical insulating and mechanical laminated manufacturing, clutch plate and automobile filter with a filter paper. 

High carbon residue rate

   At the temperature about 1000 ℃ under inert gas conditions, phenolic resin will produce high carbon residue, which is beneficial to maintain the structure stability of phenolic resin. The properties of phenolic resin, and it can be used for refractory material in the field of an important reason.

 Low smoke low toxic

   Compared with other resin systems, phenolic resin system has the advantages of low smoke low toxicity. In the case of burning, with the scientific formula to produce phenolic resin system, will be slow decomposition hydrogen, hydrocarbons, water vapour and carbon dioxide. decompositionproduced in the process of smoke less, toxicity is relatively low. These characteristics make phenolic resin is suitable for the area of public transport and safety requirements is very strict, such as mining, fencing, construction and so on.

 Chemical resistance

 After crosslinking phenolic resin can resist any chemical decomposition. Such as gasoline, oil, alcohol, ethylene glycol and various hydrocarbons.

 Heat treatment 

  Heat treatment can raise the glass transition temperature of curing resin, to further improve the performance of the resin. Glass transition temperature molten state is similar to that of a crystalline solid, such as polypropylene. Phenolic resin with the glass transition temperature of initial in the initial stage of solidifying temperature. Heat treatment process can improve the liquidity of crosslinked resin further prompt response, at the same time also can remove residual volatile phenol, reduce shrinkage, enhance the dimensional stability, hardness, and high temperature strength. At the same time, the resin also tend to shrink and become fragile. Resin post-processing heating curve will depend on the initial curing conditions and the resin system.