rGO/CNTs/EP复合涂层的电荷积聚与消散特性

赵欣; 邢一龙; 李梦; 黄成超; 赵皓东; 杨华荣

doi:10.11868/j.issn.1005-5053.2021.000084

rGO/CNTs/EP复合涂层的电荷积聚与消散特性

doi: 10.11868/j.issn.1005-5053.2021.000084

中国民用航空飞行学院, 四川广汉 618307

基金项目: 国家结冰与防除冰重点实验室开放课题基金（IADL20190407）；中国民用航空飞行学院科研基金重点项目(ZJ2020-06)；中国民航飞行学院成果转化基金(CJ2018-03)

详细信息

通讯作者:
赵欣（1978—），男，博士，教授，主要从事航空功能材料的制备及性能表征、新型航空材料开发，E-mail:cafuczx@126.com

中图分类号: V255
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- 被引次数: 0
出版历程
- 收稿日期: 2021-05-18
- 录用日期: 2022-02-14
- 修回日期: 2022-02-23
- 刊出日期: 2022-04-22

Charge accumulation and dissipation characteristics of rGO / CNTs / EP composite coating

Civil Aviation Flight University of China, Guanghan 618307，Sichuan，China

摘要

摘要: 研究飞机涂层的导静电问题，对rGO/CNTs/EP复合涂层表面的电荷积聚、消散过程进行理论分析，并根据实验数据进行拟合分析，探讨理论模型的合理性以及影响电荷消散作用的因素。采用三种电荷动态变化模型对实测数据进行拟合分析，揭示拟合曲线以及电荷积聚与消散过程的时间常数、拟合系数等参数，与理论变化曲线进行对比研究，验证电荷变化情况与时间常数的关系，评价模型的合理性与涂层电荷耗散效果。结果表明：相比于积聚模型，复杂模型较好地反映电荷积聚过程中的变化；随着涂层中rGO/CNTs添加量的增加，积聚时间常数与消散时间常数比值增大，积聚电荷的峰值减小，消散作用增强；消散模型基本符合电荷消散过程的实际变化趋势，随着rGO/CNTs添加量的增加，消散时间常数减小，消散作用增强。
- 石墨烯 /
- 碳纳米管 /
- 复合涂层 /
- 拟合分析 /
- 电荷积聚与消散
Abstract: The process of charge accumulation and dissipation on the surface of rGO / CNTs / EP composite coating was analyzed theoretically, and the fitting analysis was carried out according to the experimental data. The rationality of the theoretical model and the factors affecting the charge dissipation were discussed. On this basis, three kinds of charge dynamic change models were adopted to fit the measured data analysis, revealed the fitting curve and charge accumulation and dissipation process parameters such as time constant, fitting coefficient, and compared with the theoretical change curve, verified the charge and time constant, the relationship between the changes of the rationality of the evaluation model with a coating of charge dissipation effect. The results show that: compared with the accumulation model, the complex model better reflects the change process of charge accumulation process. With the increase of rGO / CNTs content in the coating, the ratio of accumulation time constant to dissipation time constant increases, the peak value of accumulated charge decreases and the dissipation effect increases. The dissipation model is basically consistent with the actual trend of charge dissipation process. With the increase of rGO / CNTs content, the dissipation time constant decreases and the dissipation effect increases.
- graphene /
- carbon nanotubes /
- composite coating /
- fitting analysis /
- charge accumulation and dissipation

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图 1 归一化后的σ(t)理论变化曲线

Figure 1. Normalized σ(t) theoretical change curve

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图 2 rGO/CNTs/EP涂层表面电位变化情况

Figure 2. Potential change of rGO / CNTs / EP coating surface

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图 3 复杂过程中不同a值条件下σ(t)/δ的理论变化曲线

Figure 3. Theoretical curves of σ(t)/δ of different a values in complex process

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图 4 归一化后复杂过程中不同a值的σ(t)的理论变化曲线

Figure 4. Theoretical curves of σ(t) of different a values in complex process after normalization

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图 5 归一化后消散过程中u(t)的理论变化曲线

Figure 5. Theoretical curve of u(t) in dissipation process after normalization

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图 6 涂层试样表面电荷积聚状况测试装置

Figure 6. Test device for surface charge accumulation of composite coating sample

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图 7 rGO/CNTs/EP涂层在电荷积聚过程中表面电位变化拟合曲线与实测数据变化（a）复杂模型的拟合结果；（b）积聚模型的拟合结果

Figure 7. Fitting curves of surface potential change of rGO/CNTs/EP coating in charge accumulation process and change of measured data　 (a) fitting curves of complex model; (b) fitting curves of accumulation model

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图 8 以复杂模型拟合的rGO/CNTs/EP涂层表面电位变化归一化曲线

Figure 8. Normalized curves of surface potential change of rGO/CNTs/EP coating fitted with complex model

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图 9 rGO/CNTs/EP涂层在消散过程中表面电位变化拟合曲线与实测数据变化

Figure 9. Fitting curves of surface potential change of rGO / CNTs / EP coating in dissipation process and change of measured data

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图 10 以消散模型拟合的rGO/CNTs/EP涂层表面电位变化归一化曲线

Figure 10. Normalized curves of surface potential change of rGO/CNTs/EP coating fitted with dissipation model

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表 1 复杂模型、积聚模型的拟合参数及a值

Table 1. Fitting parameters of complex model and accumulation model and a value

Sample	Fitting formula	U/kV	b	c/s^–1	d/s^–1	R²	a
EP	Formula 8	–5.002	0.4261	0.00087	2.22×10^–14	0.9995	2.56×10^–11
EP	Formula 9	–5.002	0.4261	0.00087	—	0.9995	—
1% rGO/CNTs	Formula 8	–5.001	0.4088	0.00107	0.00079	0.9999	0.7359
1% rGO/CNTs	Formula 9	–5.001	0.1305	0.00389	—	0.9973	—
3% rGO/CNTs	Formula 8	–5.001	0.1406	0.00193	4.17×10^–14	0.9999	2.17×10^–11
3% rGO/CNTs	Formula 9	–5.001	0.1406	0.00193	—	0.9999	—
5% rGO/CNTs	Formula 8	–5.027	0.5402	0.00058	0.00151	0.9983	2.6097
5% rGO/CNTs	Formula 9	–5	0.6084	0.0078	—	0.9787	—

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表 2 电荷积聚补充测量数据

Table 2. Charge accumulation measurement supplementary data

Sample	Surface potential/kV
Sample	20 min	30 min
EP	–1.35	–1.62
1% rGO/CNTs	–0.56	–0.45
3% rGO/CNTs	–0.27	–0.18
5% rGO/CNTs	–0.19	–0.13

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表 3 消散模型的拟合参数及实验中的U₀

Table 3. Fitting parameters of dissipation model and U₀ in test

Sample	U₀ in fitting/kV	U₀ in test/kV	m/s^–1	R²
EP	–0.4701	–0.5	0.0005806	0.8515
1 % rGO/CNTs	–0.4177	–0.44	0.004685	0.9627
3 % rGO/CNTs	–0.2854	–0.31	0.005149	0.9075
5 % rGO/CNTs	–0.2457	–0.27	0.005796	0.8824

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