Product Details:
Payment & Shipping Terms:
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| Appearance: | Transparent Pellets | Package: | 25kg Bag |
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| Melting Point: | 98-105℃ | Monomers: | Phenol And Formaldhyde |
| Flow: | 102 Mm @ 125℃ | Application: | Electronic Molding Compound |
| High Light: | phenolic resin,phenol formaldehyde novolac |
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Novolac Phenolic resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term “two-step,” because of the two formaldehyde additions. A novolak phenolic resin has an infinite shelf life under normal storage conditions.Cured phenolic resin provides the rigidity necessary to maintain structural integrity and dimensional stability even under severe conditions.
Application
Novolac Phenolic Resin P8211 is recommended for epoxy curing agents,especially for epoxy system users seeking high glass transition temperature (Tg), excellent stability at high operating temperatures, superior flame retardancy, and overall mechanical integrity
Specification:
| Properties | Value | Test standard |
| Soften point | 90-95°C | GB/T24411-2009 |
| Curing time @150°C | 100-160s | GB/T24411-2009 |
| Flow Distance@125°C | 120mm | GB/T24411-2009 |
| Free-phenol | 0.2% | GB/T30773-2014 |
| Viscosity(p) | 1.5-2.5 | ZJHM-QESP-01-2015 |
| Water content | 0.5-2.0% | GB/T2683-2008 |
| Hydroxy equivalent | 115-120 | 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
Contact Person: Mr. David Zhang
Tel: +86 573 8251 2625
Fax: 86-573-8332-9500
