Study on the Decomposition Mechanism of C4F7N/N2 Gas Mixture

FU Mingli; CHEN Xi; CHEN Rouyi; WANG Qi; ZHUO Ran; WANG Dibo; ZHANG Xiaoxing; LI Yi

doi:10.13296/j.1001-1609.hva.2020.07.001

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Study on the Decomposition Mechanism of C₄F₇N/N₂ Gas Mixture

更新时间：2025-04-26

- Study on the Decomposition Mechanism of C₄F₇N/N₂ Gas Mixture
- High VoltageApparatus Vol. 56, Issue 7, Pages: 1-7(2020)
- 作者机构：
  
  1. 南方电网科学研究院有限责任公司
  2. 中国南方电网有限责任公司
  3. 武汉大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.07.001
  CLC： TM213
- Published：2020
- 稿件说明：
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[1]傅明利,陈曦,陈柔伊,王琦,卓然,王邸博,张晓星,李祎.C_4F_7N/N_2混合气体的分解机理研究[J].高压电器,2020,56(07):1-7.

FU Mingli, CHEN Xi, CHEN Rouyi, et al. Study on the Decomposition Mechanism of C₄F₇N/N₂ Gas Mixture[J]. High voltageapparatus, 2020, 56(7): 1-7.
[1]傅明利,陈曦,陈柔伊,王琦,卓然,王邸博,张晓星,李祎.C_4F_7N/N_2混合气体的分解机理研究[J].高压电器,2020,56(07):1-7. DOI： 10.13296/j.1001-1609.hva.2020.07.001.

FU Mingli, CHEN Xi, CHEN Rouyi, et al. Study on the Decomposition Mechanism of C₄F₇N/N₂ Gas Mixture[J]. High voltageapparatus, 2020, 56(7): 1-7. DOI： 10.13296/j.1001-1609.hva.2020.07.001.

摘要

近年来

N（2

3-四氟-2-（三氟甲基）-丙腈）凭借优良的绝缘和环保性能得到了替代气体研究领域的广泛关注。目前针对C

N混合气体分解特性的研究较少

为明确其分解特性

文中基于ReaxFF分子动力学方法和量子化学DFT理论对C

N/N

混合气体的分解机理进行了研究

同时利用气体绝缘性能测试平台配合气相色谱质谱联用仪对C

N/N

混合气体多次工频击穿后的放电分解产物进行了检测。研究发现C

N/N

混合气体的主要分解产物有CF

、C

、CF

CN、C

、C

和C

其中C

、CF

及CF

CN的相对含量较高;ReaxFF-MD分子动力学模拟显示CF

F和C3F7是C

N分解形成的4种最为重要的自由基碎片。该研究成果深入揭示了C

N/N

混合气体的分解机理

为混合气体的工程应用提供了重要参考。

Abstract

In recent years

N（2

3-tetrafluoro-2-（trifluoromethyl） propanenitrile） has got extensive attention in the field of alternative gas research due to its excelle

nt insulation and environmental performance. At present

there are few studies on the decomposition characteristics of C

N gas mixture

in order to clarify its decomposition characteristics

the decomposition mechanism of C

N/N

gas mixture is studied based on the ReaxFF molecular dynamics method and quantum chemical DFT theory. The gas insulation performance test platform and gas chromatography-mass spectrometry（GC-MS） were also used to detect the decomposition products of C

N/N

gas mixture after multiple frequency breakdown tests. The results show that the main decomposition products of the C

N/N

gas mixture are CF

、C

、CF

CN、C

、C

and C

CN. Among them

the relative contents of C

、CF

and CF

CN are relatively high. The ReaxFF-MD simulation shows that CF

、CN、F and C

are the four main free radicals produced by C

N decomposition. Related research results not only revealed the decomposition mechanism of C

N/N

gas mixture in depth

but also provides an important reference for the engineering application of C

N/N

gas mixture.

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