Phenolic Resin Temperature Range

The temperature range of the second stage reaction was from 100 to 400 c and the changes in pf resin with the addition of accelerators during this stage were complex due to multiple reactions that occurred simultaneously that is the release of main contributors to the weight loss such as free phenol aldehyde short oligomers and water.

Phenolic resin temperature range. Both have high temperature stability up to 300 350 c high water and chemical stability. The self ignition temperature of the phenolic resin is approximately 600 c and the limiting oxygen index loi is in the range of 40 49. Phenolic sheet is a hard dense material made by applying heat and pressure to layers of paper or glass cloth impregnated with synthetic resin these layers of laminations are usually of cellulose paper cotton fabrics synthetic yarn fabrics glass fabrics or unwoven fabrics. Alder ene reaction mechanism of maleimide and allyl modified novolacs and structure of cured network 42 43.

Phenolic plastics are composites made from the combining of phenol aldehyde and formaldehyde and filler materials. The systems underwent a multi step curing process over a temperature range of 110 270 c scheme 12 6. Resole phenolic resins are produced via b staging while novolac resins are made by pre polymerization. Phenolic resins are often dark colored from yellow to dark red and have an excellent price performance profile.

Phenolic nema and mil specifications table chart. Phenolic materials are available in sheets tubes rods blocks as well as specified shapes. Phenolic resins are ideal for high temperature applications where parts must meet fire safety smoke emission combustion and toxicity requirements. Plenco manufactures a wide range of phenolic molding materials designed for high temperature use.

They have excellent flame retardence heat and chemical resistance and electrical non conductivity characteristics. Phenolic composites are largely used in the aircraft interior and mass transit industries buses railways with interest increasing in marine applications. Phenolic resins are also used for making exterior plywood commonly known as weather and boil proof wbp plywood because phenolic resins have no melting point but only a decomposing point in the temperature zone of 220 c 428 f and above. Manufacturers may also choose from a wide range of novolac hexa powder resin products.

Some companies combine phenolic resins with temperature resistant ceramic fibers in a vacuum forming process to manufacture riser sleeves ladles and hot toppings. Phenolic resins are divided into two different types novolacs and resoles.