Curing reaction and mechanism of phenol-formaldehyde novolac resins for foundry
| Autor: | Cong-yan Liao, Yue Han, Lin-zhi Xie, Chun-rong Yang, Li-feng Wang, Yan Shi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Formaldehyde 02 engineering and technology Activation energy 01 natural sciences lcsh:Technology Chemical kinetics chemistry.chemical_compound Differential scanning calorimetry lcsh:Manufactures Polymer chemistry Materials Chemistry Phenol Curing (chemistry) lcsh:T Metals and Alloys 021001 nanoscience & nanotechnology 010406 physical chemistry 0104 chemical sciences Process conditions phenol-formaldehyde novolac resins used for foundry hexamethylene tetramine differential scanning calorimetry curing reaction and mechanism Chemical engineering chemistry Foundry 0210 nano-technology lcsh:TS1-2301 |
| Zdroj: | China Foundry, Vol 13, Iss 3, Pp 205-210 (2016) |
| ISSN: | 1672-6421 |
| Popis: | In this study on the curing dynamics of phenol-formaldehyde novolac resins (PFNR) and hexamethylene tetramine (HMTA), two typical commercial PFNR were selected as examples and the curing reactions of the resins with HMTA were studied by differential scanning calorimetry (DSC). Based on the data calculated by the Kissinger equation and the Crane equation, a thermocuring dynamic model was established, from which the process conditions, activation energy, reaction kinetics equation and a first-order reaction of the curing reactions were derived. |
| Databáze: | OpenAIRE |
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