Phenolic Novolac Epoxy Resin Hardener , Low Viscosity Dow Epoxy Hardeners - Product

Other Specification : Phenolic Novolac Epoxy Curing Agent In Low Viscosity For Copper-clad Laminates Product Description Phenolic Novolacresinis Produced By Condensing Phenol With An Insufficient Amount Of Formaldehyde To Complete The Reactionin The Presence Of An Acid Catalyst. This Produces A Thermoplastic Resin. Phenolic Novolacresins Are Also Used As Curing Agents Or Hardeners For Epoxy Resins In Applications Such As Molding Materials, Laminates, Coatings And Adhesives. The Phenolic Novolac Resins Used Are Non-heat Reactive Materials By Themselves, But Have Phenolic-OH Groups That React With Epoxy Groups. Since The Curing Mechanism Does Not Produce By-products, Thick Sections May Be Obtained Without Voids And Stresses And With Low Shrinkage. Application Adhesives & Sealants, Epoxy Hardeners And Additives, High-temperature Applications, Protective Coatings Specification: - - - - Properties | Value | Curing Time @150C | 100-160s | Flow Distance@125C | Min120mm | Free-phenol | Max.0.1% | Cone & Plate Viscosity | 0.3P | Conductivity,S/cm | Max.3 | Sodium Content, AA | Max.5ppm | Chloridion,AA | Max.5ppm | Hydroxyl Equivalent Weight,g/eq | 103-109 | Softening Point,C | 67-72 | Karl Fischer Water Content | Max.0.5% | - - - - 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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