Study on a parameter to express glass-forming relationship of phenolic–novolac resin

✍ Scribed by Kai Guo; Xiufang Bian; Zhonghao Li; Jingyu Qin

• Publisher: Society for Plastic Engineers
• Year: 2011
• Tongue: English
• Weight: 129 KB
• Volume: 33
• Category: Article
• ISSN: 0272-8397
• DOI: 10.1002/pc.21246

✦ Synopsis

Abstract

Chemoviscosity and glass‐forming ability of commercial phenolic–novolac resin are investigated at hexamethylenetramine (HMTA) curing agent content weight from 6 to 9%. We propose a parameter, M~k~, which is based on chemoviscosity change rate and T~g0~ of uncured liquid resin, to predict glass‐forming ability of the fully cured phenolic–novolac resin. It is found that M~k~ has a negative linear relationship with T~g∞~, and the lower M~k~ represents the better glass‐forming ability of initial phenolic–novolac uncured liquid resin while the higher T~g∞~ represents the better glass‐forming ability of fully cured resin. Further more, M~k~ establishes a kinetic glass‐forming relationship between liquid uncured and fully cured phenolic–novolac resin in terms of comparing with T~g∞~. POLYM. COMPOS., 2012. © 2011 Society of Plastics Engineers