Payment & Shipping Terms:
|Appearance:||Pale Yellow Powder||Package:||25kgs Bag|
|Free Phneol:||Low||Molecular Weight Distribution:||Medium|
|Features3:||Long Flow||Application:||Heavy-duty Grinding Wheels|
Bakelite Phenolic resins Powder are synthetic polymers formed as condensation products of phenols and aldehydes. This step-growth polymerization reaction can be either acid- or base-catalyzed. In acid, the reaction forms novolac resins. It is milled into powder and re-mixed with Hexa.
Heavy-duty grinding wheels are used for cutting and grinding foundry iron in the steel industry. These grinding wheels do not need precision but need excellent heat resistance and high strength.
The resins used have high heat resistance. These resins have short flow and high hexamine content
|Curing time @150°C||85-105s||GB/T24411-2009|
the package is paper-plastics bag in 25KGS each one
The storage life of this product is several months in a cool and dry place in original closed bags