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Recent content by NurS

  1. NurS

    Curing phenolic resin in conventional oven

    Berkshire: Really? Well I guess I couldn't get it from you right, shame on me then. By the way thanks mate! Compositepro: Just to make sure, I used liquified phenol, formaldehyde, sodium hydroxide, and hydrochloric acid (for neutralisation). There is no solvent, right? Thanks! Thank you so...
  2. NurS

    Curing phenolic resin in conventional oven

    Thank you Compositepro for the suggestion. Right now, I'm trying to make resins and figure out the optimum formulation before incorporating fibre. I'll modify the cure cycles. If we vacuum degass the mixture, is that fine? as I assume this is condensation process which yield water as...
  3. NurS

    Curing phenolic resin in conventional oven

    Hi Compositepro, thank you for your reply. Can you explain how to remove the air bubbles? First let me explain how I did it. I made this resol resin by mixing everything in round bottom flask, heat it at 70ºC for an hour, and stir it mechanically. Then neutralised it before water elimination in...
  4. NurS

    Curing phenolic resin in conventional oven

    Hi. I'm making some phenolic resol resin but the problem is, it generates a lot of voids. The water has been eliminated under reduced pressure but still when I cure it using oven, I got highly porous materials. Is there anyone can share tips, cure cycle or processing conditions that I can try...
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