Thermal Degradation of a Phenolic Resin, Vegetable Fibers, and Derived Composites

2021 ◽  
pp. 179-213
Author(s):  
Ashvinder K. Rana ◽  
Vijay K. Thakur ◽  
Anish Khan
Keyword(s):  
Thermal Degradation ◽  
Phenolic Resin ◽  
Vegetable Fibers

Thermal degradation of a phenolic resin, vegetable fibers, and derived composites

2007 ◽  
Vol 107 (5) ◽  
pp. 2977-2985 ◽  
Author(s):  
C. N. Zárate ◽  
M. I. Aranguren ◽  
M. M. Reboredo
Keyword(s):  
Thermal Degradation ◽  
Phenolic Resin ◽  
Vegetable Fibers

Ablation and thermal degradation behaviour of a composite based on resol type phenolic resin: Process modeling and experimental

Polymer ◽  
2006 ◽  
Vol 47 (10) ◽  
pp. 3661-3673 ◽  
Author(s):  
Ahmad Reza Bahramian ◽  
Mehrdad Kokabi ◽  
Mohammad Hossein Navid Famili ◽  
Mohammad Hossein Beheshty
Keyword(s):  
Thermal Degradation ◽  
Process Modeling ◽  
Phenolic Resin ◽  
Degradation Behaviour

Comparative Study of Thermal Degradation Behavior of High Char Yield Phenolic Resin and Commercial Resin

2012 ◽  
Vol 500 ◽  
pp. 94-97
Author(s):  
Zhi Qin Chen ◽  
Wei Jun Zeng ◽  
Yang Fei Chen ◽  
Wen Kui Li ◽  
Hong Bo Liu
Keyword(s):  
Thermal Degradation ◽  
Phenolic Resin ◽  
Degradation Process ◽  
Char Yield ◽  
Degradation Behavior ◽  
Commercial Resin ◽  
Thermal Degradation Behavior ◽  
Nmr Techniques ◽  
Specific Reactions ◽  
C Nmr

The thermal degradation behavior of high char yield phenolic resin (PF1.2) synthesized by us was investigated, in comparison with that of commercial resin (PF1.5), using TGA and13C-NMR techniques. It was found that the degradation process of PF1.2behaved very similar to that of PF1.5during heat treatment up to 700 °C under N2atmosphere, but resulted in a somewhat different extent of some specific reactions. That was, although the reactions occurring up to 700 °C were dominated by crosslinking and/or polyaromatization, fewer methyl bonds from breaking of methylene bridges were formed in PF1.2than in PF1.5. As a consequence, a higher char yield of 73.8% of PF1.2than that of PF1.5(57.5%) up to 700 °C under N2atmosphere was attached, with better thermal properties.

Study on Thermal Degradation of Phenolic Resin

2013 ◽  
Vol 422 ◽  
pp. 24-28 ◽  
Author(s):  
Zhi Qin Chen ◽  
Yang Fei Chen ◽  
Hong Bo Liu
Keyword(s):  
Thermal Degradation ◽  
Phenolic Resin ◽  
Thermo Gravimetric Analysis ◽  
Degradation Process ◽  
Decomposition Reaction ◽  
Gravimetric Analysis ◽  
Second Stage ◽  
Commercial Resin ◽  
Structure Changes ◽  
Nmr Techniques

The thermal degradation of phenolic formaldehyde resins (PF) were studied using thermo gravimetric analysis (TGA). The evolved volatiles during thermal degradation of PF were examined by mass spectrometry (MS). The structure changes of thermal degradation of synthetical phenolic resin (PF1.2) and commercial resin (CPF) were investigated by solid-state 13C nuclear magnetic resonance (13C-NMR) techniques. The experimental results show that the degradation process of PF could be separated into three stages. In the first stage, ether bonds and unreacted terminal hydroxymethyl groups of the cured resin degraded. Methylene bridges decomposed into methyl groups then yielded both phenol and cresol homolog in the second stage. In the third stage, cyclodehydration and forming char of phenolic hydroxyl occurred. Our study showed that the main thermal degradation of PF in the second stage is the decomposition reaction of the methylene bridges instead of auto-oxidation of the methylene bridges reported in previous works.

Thermal degradation of paper sheets made from wood treated with phenolic resin and bagasse pulps

1991 ◽  
Vol 191 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Magdi Z. Sefain ◽  
Zenat A. Nagieb ◽  
Nahla A. El-Wakil ◽  
Magdi M. Naoum
Keyword(s):  
Thermal Degradation ◽  
Phenolic Resin
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