High Purity Bakelite Phenolic Resin High Temperature Resistance For Bonded Abrasives
Bakelite Phenolic Resin Powder Improved Burst Resistance for bonded Abrasives
Product description
Bakelite Phenolic resins Powder are synthetic polymers formed as condensation products of phenols and aldehydes under acid conditions. The reaction forms novolac resins. These resins require a curing agent - often hexamethylenetetramine or hexa.It is milled into powder and re-mixed with Hexa.
Application
Bakelite Phenolic resins Powder are suited to both cold and hot compression molding for the production of a range of abrasive wheels, including those utilizing glass fabric prepregs for reinforcement.
Bakelite Phenolic resin has high heat-resistance and provides strong adhesion to grain. When compared to the other heat-resistant resins, like polyimide, phenolic resin is less expensive in cost and easier to mold
than other resins.
Specification:
| Properties | Value | Test standard |
| Curing time @150°C | 90-110s | GB/T24411-2009 |
| Flow Distance@125°C | 35-45mm | GB/T24411-2009 |
| Free-phenol | 0.5-1.5% | GB/T30773-2014 |
| hexa content | 8-10% | ZJHM-QESP-01-2015 |
| Water content | 0.5-2.0% | GB/T2683-2008 |
| Screening 200mesh/0.074mm | 99% | GB/T24411-2009 |
Packing&Storage
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
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