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| Thermal Degradation Behavior and Kinetics Analysis of PMMA with Different Carbon Black Contents |
LONG Qing, WANG Chuanyang( ) |
| School of Mechanical and Electric Engineering, Soochow University, Suzhou 215021, China |
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Cite this article:
LONG Qing, WANG Chuanyang. Thermal Degradation Behavior and Kinetics Analysis of PMMA with Different Carbon Black Contents. Chinese Journal of Materials Research, 2022, 36(11): 837-844.
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Abstract Polymethyl methacrylate (PMMA) with different carbon black (CB) contents were prepared by melt blending. Based on the solid-state reaction kinetics, the thermal degradation behavior of PMMA with different CB contents was explored. Through non-isothermal thermogravimetric analysis (TGA) experiments under the conditions of different heating rates, the thermal degradation kinetic models of PMMA with different CB contents were built by four methods, including Friedman, FWO, KAS and Freeman-Carroll. The accuracy of models was verified by comparing with TGA experiments. The results show that PMMA with CB has higher thermal decomposition temperature and activation energy compared with pure PMMA. The PMMA with 0.1% CB presents the highest thermal stability. The activation energy of PMMA first rises and then falls down with increasing CB content, and the maximum increment is 17.76 kJ·mol-1, which proves that adding CB improves the thermal stability of PMMA to a certain extent.
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Received: 13 August 2021
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| Fund: National Natural Science Foundation of China(52075354) |
About author: WANG Chuanyang, Tel: 18626287911, E-mail: jyniigata@163.com
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