Advances in New and Renewable Energy

A Pilot Study on the Recycling of Carbon Fiber Composite by Microwave Assisted Pyrolysis Coupled with Oxidation

Mumin RAO, Shuangqing HU, Yong YAO, Yuanjia ZHANG, Yang CAO, Jinting CAI, Weiqiang ZHU

Advances in New and Renewable Energy, 2025, 13(1): 32-38. DOI: 10.3969/j.issn.2095-560X.2025.01.005

序号	样品	编号	最大失重速率（对应温度）		最大失重率/% （N₂气氛下）
序号	样品	编号	N₂气氛下	空气气氛下	最大失重率/% （N₂气氛下）
1	新鲜碳纤维	vCF	—	7.57%/℃（824.6 ℃）	1.57
2	碳纤维复合板	WBW	3.47%/℃（430.2 ℃）	1.26%/℃（366.8 ℃） 1.54%/℃（435.0 ℃） 1.26%/℃（561.6 ℃） 5.63%/℃（870.3 ℃）	26.62
3	18 kW热解产物	pWBW@18 kW	—	7.34%/℃（879.1 ℃）	5.97
4	450 ℃氧化产物	rCF@450 ℃	—	7.54%/℃（880.2 ℃）	3.37
5	500 ℃氧化产物	rCF@500 ℃	—	7.13%/℃（880.3 ℃）	1.60
6	550 ℃氧化产物	rCF@550 ℃	—	7.13%/℃（830.2 ℃）	1.34

Table 1 TG and DTG curves for analytical data for each sample under N₂ or air atmosphere

Other figure/table from this article

Fig. 1 Schematic diagram of microwave-assisted pyrolysis-oxidation reaction device
Fig. 2 Variation of reactor temperature with material residence time: temperature distribution of microwave pyrolysis furnace temperature field at 12 kW (a) and 18 kW (b) power; microwave pyrolysis furnace wall (c) and oxidation furnace (d) temperature measurement
Fig. 3 Mass yield of microwave pyrolysis-oxidation process of CFRP under different experimental conditions: (a) pyrolysis product yield; (b) oxidation product yield; (c) total yield
Fig. 4 TG and DTG curves for each sample under N₂ atmosphere
Fig. 5 TG and DTG curves for each sample under air atmosphere
Fig. 6 SEM diagram of pyrolysis and oxidation products of fresh carbon fiber and carbon fiber composite panel: (a) fresh carbon fiber; (b) microwave pyrolysis products at 18 kW power; (c ~ e) oxidation products at 450 °C, 500 °C, 550 °C