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 on? I even tried the slow cure which took 4 days in the oven but failed! The samples came out very fragile and cracked! I did in autoclave too at 7 bar pressure but still got bubbles in it. Please anyone can help me, I'm dying to get good samples. Thank you.
Red Flag Submitted
Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The Eng-Tips staff will check this out and take appropriate action.
Reply To This Thread
Posting in the Eng-Tips forums is a member-only feature.
This 22-page report from Instrumental identifies the most common production defect types discovered in 2020, showcases trends from 2019 to 2020, and provides insights on how to prevent potential downtime in 2021. Unlike other methods, Instrumental drives correlations between a variety of data sources to help engineers find and fix root causes. Download Now
Several of the tooling and casting requirements of a part can be addressed at the design stage. If these requirements are not addressed at the design stage, lot of time is spent in design iteration when the design reaches the die caster. These design issues lead to increase in time and cost of production leading to delay in time to market and reduced profits for the organization. Download Now
The benefits of cost and time savings using effective collaborative mechanisms at the right time have been highlighted in this white paper. DFMPro, CAMWorks and eDrawings together improve collaboration. Download Now
Assembly level constraints need to be satisfied before the design can move downstream. This white paper will go through the various assembly level issues, which need to be tackled by various organizations on a regular basis. Download Now