Article(id=1304922064905855063, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304921585991836085, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2026.08.016, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1752422400000, receivedDateStr=2025-07-14, revisedDate=1757001600000, revisedDateStr=2025-09-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1789047264553, onlineDateStr=2026-09-10, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789047264553, onlineIssueDateStr=2026-09-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789047264553, creator=13701087609, updateTime=1789047264553, updator=13701087609, issue=Issue{id=1304921585991836085, tenantId=1146029695717560320, journalId=1149653034449285133, year='2026', volume='59', issue='8', pageStart='1', pageEnd='160', issueExtLink='null', onlineDate='null', pubDate='1787155200000', pubDateStr='2026-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1789047150370, creator='13701087609', updateTime=1789117776362, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305217812939698326, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304921585991836085, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305217812939698327, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304921585991836085, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=142, endPage=152, ext={EN=ArticleExt(id=1304922065094598744, articleId=1304922064905855063, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Study on determination methods of residual mineral oil content in transformers after retrofilling with ester insulating liquid, columnId=1192878364340924664, journalTitle=Insulating Materials, columnName=Test and Analysis, runingTitle=null, highlight=null, articleAbstract=
Ester insulating liquids feature a fire point above 300℃ and are biodegradability. It is often used as a substitute for mineral oil in transformer retrofilling engineering. Nevertheless, the old oil is difficult to be completely removed, and the residual mineral oil will deteriorate the physicochemical and dielectric properties of mixed system. Detecting the mineral oil content in the mixture is an important method for performance evaluation, but the existing detection methods are difficult to simultaneously balance accuracy and efficiency. In this paper, the applicability, accuracy, and economy of six detection methods including thermal conductivity method, kinematic viscosity method, fire point method, Fourier transform infrared spectroscopy (FTIR) method, dielectric properties method, and iodine value method in the detection of mineral oil content in mixed insulating liquids of natural esters (FR3, RAPO) and synthetic esters (KI50EX, TFO 100) systems were systematically compared. By constructing linear regression models between detection parameters and mineral oil mass fractions, the prediction accuracy of each method was evaluated based on the coefficient of determination (R2). The results show that for natural ester-based mixed systems, the 60℃ kinematic viscosity prediction method has the highest priority, followed by the 40℃ thermal conductivity method, iodine value method, and FTIR method. For synthetic ester-based mixed systems, the 60℃ kinematic viscosity prediction method is the most cost-effective, with the thermal conductivity and FTIR method following closely behind. The iodine value method is inapplicable to synthetic ester systems due to the saturated chemical structure of synthetic esters. Fire point tests cannot provide a clear indication of the residual mineral oil content but can help quickly determine whether mixed insulating liquids meet the K-level flame-retardant requirements. Dielectric parameters are significantly affected by environmental factors such as moisture and are not suitable as quantitative detection indicators for mineral oil residues.
, authors=Yuting Cai
1, Ting Deng
1, Yihua Qian
2, Zhenfu Tang
1, Yang Xu
1, authorsList=Yuting Cai, Ting Deng, Yihua Qian, Zhenfu Tang, Yang Xu, authorCompany=null, correspAuthors=Yang Xu, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1304922068076748923, articleId=1304922064905855063, tenantId=1146029695717560320, journalId=1149653034449285133, language=CN, title=矿物油变压器再填充酯类绝缘液后残留矿物油含量检测方法研究, columnId=1192878364483531003, journalTitle=绝缘材料, columnName=测试与分析, runingTitle=null, highlight=null, articleAbstract=
天然酯绝缘液燃点高于300℃、可生物降解,常替代矿物油用于变压器再填充工程,但旧油难以完全清除,残余矿物油会劣化混合体系理化及介电特性。检测混合液中矿物油含量是性能评估重要方法,但现有检测手段难以同步兼顾精度与效率。本文系统比较了热导率法、运动黏度法、燃点法、傅里叶红外光谱(FTIR)法、介电特性法及碘值法在内的6种检测方法在天然酯(FR3、RAPO)与合成酯(KI50EX、TFO 100)体系混合绝缘液中矿物油含量检测的适用性、准确性及经济性。通过构建检测参数与矿物油质量分数的线性回归模型,基于决定系数(R2)评估各方法的预测精度。结果表明:对于天然酯基混合体系使用60℃运动黏度预测方法优先级最高,40℃热导率、碘值法和FITR法次之。对于合成酯基混合体系,60℃运动黏度预测方法最经济有效,热导率法和FITR法次之,碘值法因合成酯化学结构饱和而不适用该体系。燃点测试无法明确给出矿物油残留含量,但可帮助快速判断混合绝缘液是否满足K级难燃要求。介电参数受水分等环境因素干扰显著,不适宜作为矿物油残留的定量检测指标。
, authors=蔡玉婷
1, 邓婷
1, 钱艺华
2, 唐桢馥
1, 徐阳
1, authorsList=蔡玉婷, 邓婷, 钱艺华, 唐桢馥, 徐阳, authorCompany=null, correspAuthors=徐阳, authorNote=
蔡玉婷(2002-),女(汉族),河南驻马店人,硕士生,主要从事变压器绿色环保绝缘液的研究
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徐阳(1969-),男(汉族),陕西西安人,教授,主要从事电气绝缘测试技术、电力变压器替代绝缘液体等方面的研究。
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2003. Conference Record.2003:141-147., articleTitle=Retrofilling aging transformers with natural ester based dielectric coolant for safety and life extension, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1304922068320018556, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, xref=1, ext=[AuthorCompanyExt(id=1304922068324212861, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, companyId=1304922068320018556, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Structure diagrams of synthetic ester and natural ester, figureFileSmall=5+tKUXfanLQb97vtkQGmZg==, figureFileBig=YVhesRwHbJqAXT6kNjsFKQ==, tableContent=null), ArticleFig(id=1304922070769492138, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图1, caption=
合成酯和天然酯的结构式, figureFileSmall=5+tKUXfanLQb97vtkQGmZg==, figureFileBig=YVhesRwHbJqAXT6kNjsFKQ==, tableContent=null), ArticleFig(id=1304922070970818731, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.2, caption=
Thermal conductivity fitting curves of FR3 natural ester and mineral oil mixed insulating liquid at different temperatures, figureFileSmall=q5RDo70MP766pf9U7yBlbw==, figureFileBig=3yadY+d2RD1Ed5NVRE/OYA==, tableContent=null), ArticleFig(id=1304922071033733292, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图2, caption=
不同温度下FR3天然酯与矿物油混合绝缘液的热导率拟合曲线, figureFileSmall=q5RDo70MP766pf9U7yBlbw==, figureFileBig=3yadY+d2RD1Ed5NVRE/OYA==, tableContent=null), ArticleFig(id=1304922071100842157, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.3, caption=
Thermal conductivity fitting curves of KI50EX synthetic ester and mineral oil mixed insulating liquid at different temperatures, figureFileSmall=tp+TgSHpp617vtRpbnpRWQ==, figureFileBig=OxW9PaSZtcxLuhXFdy9RJg==, tableContent=null), ArticleFig(id=1304922071180533934, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图3, caption=
不同温度下KI50EX合成酯与矿物油混合绝缘液的热导率拟合曲线, figureFileSmall=tp+TgSHpp617vtRpbnpRWQ==, figureFileBig=OxW9PaSZtcxLuhXFdy9RJg==, tableContent=null), ArticleFig(id=1304922071268614319, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.4, caption=
Kinematic viscosity fitting curves of FR3 natural ester and mineral oil mixed insulating liquid at different temperatures, figureFileSmall=YhtO1ycs+WutzBD8YAs7qA==, figureFileBig=LHI7vWT5F9lHzBbSKBtUJQ==, tableContent=null), ArticleFig(id=1304922071369277616, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图4, caption=
不同温度下FR3天然酯与矿物油混合绝缘液的运动黏度拟合曲线, figureFileSmall=YhtO1ycs+WutzBD8YAs7qA==, figureFileBig=LHI7vWT5F9lHzBbSKBtUJQ==, tableContent=null), ArticleFig(id=1304922071465746609, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.5, caption=
Kinematic viscosity fitting curves of KI50EX synthetic ester and mineral oil mixed insulating liquid at different temperatures, figureFileSmall=8ekhVMfm5Cg3wmVev3jsTQ==, figureFileBig=Lz56I/FE4046XH+HVGU9FA==, tableContent=null), ArticleFig(id=1304922071545438386, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图5, caption=
不同温度下KI50EX合成酯与矿物油混合绝缘液的运动黏度拟合曲线, figureFileSmall=8ekhVMfm5Cg3wmVev3jsTQ==, figureFileBig=Lz56I/FE4046XH+HVGU9FA==, tableContent=null), ArticleFig(id=1304922071637713075, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.6, caption=
Test results of fire point for mixed insulating liquids of natural esters and synthetic esters with different mineral oil mass fraction, figureFileSmall=MPpA9tyfvSGv7SnyJsK2VQ==, figureFileBig=CyGfyMasFLQSHz8dLOxmYQ==, tableContent=null), ArticleFig(id=1304922071713210548, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图6, caption=
不同矿物油质量分数的天然酯和合成酯混合绝缘液的燃点测试结果, figureFileSmall=MPpA9tyfvSGv7SnyJsK2VQ==, figureFileBig=CyGfyMasFLQSHz8dLOxmYQ==, tableContent=null), ArticleFig(id=1304922071776125109, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.7, caption=
FTIR spectra of RAPO natural ester mixed with mineral oil insulating liquid, figureFileSmall=gBcR/1Dou16dBksSZADBYw==, figureFileBig=YIHuyjwD1sJ9+wMQUL4YLw==, tableContent=null), ArticleFig(id=1304922071860011190, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图7, caption=
RAPO天然酯与矿物油混合绝缘液的FTIR光谱, figureFileSmall=gBcR/1Dou16dBksSZADBYw==, figureFileBig=YIHuyjwD1sJ9+wMQUL4YLw==, tableContent=null), ArticleFig(id=1304922071939702967, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.8, caption=
FTIR spectra of FR3 natural ester mixed with mineral oil insulating liquid, figureFileSmall=BzPk6DpAPVoEAJGjw291Ag==, figureFileBig=ZTiJ4TrSul6KtJfoozoWMw==, tableContent=null), ArticleFig(id=1304922072006811832, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图8, caption=
FR3天然酯与矿物油混合绝缘液的FTIR光谱, figureFileSmall=BzPk6DpAPVoEAJGjw291Ag==, figureFileBig=ZTiJ4TrSul6KtJfoozoWMw==, tableContent=null), ArticleFig(id=1304922072086503609, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.9, caption=
Relationship between the calibration peak absorbance of C=O bond in natural ester mixed insulating liquid and the mass fraction of mineral oil, figureFileSmall=hVqf3046CbqRkt+GTrlGcQ==, figureFileBig=BeTWCoesnlF0IDJFhr4Pww==, tableContent=null), ArticleFig(id=1304922072162001082, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图9, caption=
天然酯混合绝缘液中C=O键的校准峰值吸光度与矿物油质量分数的关系, figureFileSmall=hVqf3046CbqRkt+GTrlGcQ==, figureFileBig=BeTWCoesnlF0IDJFhr4Pww==, tableContent=null), ArticleFig(id=1304922072233304251, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.10, caption=
FTIR spectra of mixed insulating liquid of KI50EX synthetic ester and mineral oil, figureFileSmall=dwjphzxmsliTttDIutWsdg==, figureFileBig=EgV077r1bkMDriBuwMov3g==, tableContent=null), ArticleFig(id=1304922072296218812, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图10, caption=
KI50EX合成酯与矿物油混合绝缘液的FTIR光谱, figureFileSmall=dwjphzxmsliTttDIutWsdg==, figureFileBig=EgV077r1bkMDriBuwMov3g==, tableContent=null), ArticleFig(id=1304922072401076413, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.11, caption=
FTIR spectra of mixed insulating liquid of TFO 100 synthetic ester and mineral oil, figureFileSmall=62I27AOo5GgHmr76MVCSNw==, figureFileBig=1VSSmjs1aoXUIMTSljE6Hw==, tableContent=null), ArticleFig(id=1304922072468185278, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图11, caption=
TFO 100合成酯与矿物油混合绝缘液的FTIR光谱, figureFileSmall=62I27AOo5GgHmr76MVCSNw==, figureFileBig=1VSSmjs1aoXUIMTSljE6Hw==, tableContent=null), ArticleFig(id=1304922072564654271, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.12, caption=
Relationship between the calibration peak absorbance of C=O bond in synthetic ester mixed insulating liquid and the mass fraction of mineral oil, figureFileSmall=mwQgWovUVHk4y4lfGnhsmA==, figureFileBig=ycISepZUdaujUdxiGn+EjQ==, tableContent=null), ArticleFig(id=1304922072648540352, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图12, caption=
合成酯混合绝缘溶液中C=O键的校准峰值吸光度与矿物油质量分数的关系, figureFileSmall=mwQgWovUVHk4y4lfGnhsmA==, figureFileBig=ycISepZUdaujUdxiGn+EjQ==, tableContent=null), ArticleFig(id=1304922072724037825, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.13, caption=
Test results of dielectric loss factors of ester mixed insulating liquids with different mass fractions of mineral oil, figureFileSmall=O2INfFxTY8E25cdVeUJTVQ==, figureFileBig=Sx/QGbzNrXNgKEnMqe8P2Q==, tableContent=null), ArticleFig(id=1304922072795340994, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图13, caption=
不同质量分数矿物油的酯类混合绝缘液的介质损耗因数测试结果, figureFileSmall=O2INfFxTY8E25cdVeUJTVQ==, figureFileBig=Sx/QGbzNrXNgKEnMqe8P2Q==, tableContent=null), ArticleFig(id=1304922072862449859, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.14, caption=
Test results of relative dielectric constants of ester mixed insulating liquids with different mass fractions of mineral oil, figureFileSmall=TapZ7IB/31/DbSjWBujWyQ==, figureFileBig=W0DJXrH7Q8/r5a2sRszpqQ==, tableContent=null), ArticleFig(id=1304922072925364420, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图14, caption=
不同质量分数矿物油的酯类混合绝缘液的相对介电常数测试结果, figureFileSmall=TapZ7IB/31/DbSjWBujWyQ==, figureFileBig=W0DJXrH7Q8/r5a2sRszpqQ==, tableContent=null), ArticleFig(id=1304922072979890373, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.15, caption=
IV of mixed insulating liquid of natural ester and mineral oil with different mass fraction mixtures, figureFileSmall=C/0rJHJMrezxAtvZ4TDXZg==, figureFileBig=jK+KSpQoH7oXzfK0oAPF7Q==, tableContent=null), ArticleFig(id=1304922073042804934, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图15, caption=
天然酯与不同质量分数矿物油混合绝缘液的碘值, figureFileSmall=C/0rJHJMrezxAtvZ4TDXZg==, figureFileBig=jK+KSpQoH7oXzfK0oAPF7Q==, tableContent=null), ArticleFig(id=1304922073130885319, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.16, caption=
Fire point variation characteristics of natural ester mixed insulating liquids with different mass fractions of mineral oil and literature references, figureFileSmall=P7pPDEqEfTDNbwIEMQmoGA==, figureFileBig=2ayaPT9q3A8AFtuEEkk4ow==, tableContent=null), ArticleFig(id=1304922073239937224, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图16, caption=
不同矿物油质量分数的天然酯混合绝缘液燃点变化特性及文献参照, figureFileSmall=P7pPDEqEfTDNbwIEMQmoGA==, figureFileBig=2ayaPT9q3A8AFtuEEkk4ow==, tableContent=null), ArticleFig(id=1304922073302851785, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Fig.17, caption=
Fire point variation characteristics of synthetic ester mixed insulating liquids at different mass fractions of mineral oil and literature references, figureFileSmall=INN9+/sPIddp2HCuvnK7Ow==, figureFileBig=xZDo2Q0UZr40c5Ryu466gg==, tableContent=null), ArticleFig(id=1304922073382543562, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=图17, caption=
不同矿物油质量分数下合成酯混合绝缘液燃点变化特性及文献参照, figureFileSmall=INN9+/sPIddp2HCuvnK7Ow==, figureFileBig=xZDo2Q0UZr40c5Ryu466gg==, tableContent=null), ArticleFig(id=1304922073441263819, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=EN, label=Table 1, caption=
Main performance parameters of 5 kinds of insulating oils
, figureFileSmall=null, figureFileBig=null, tableContent=
| 性能指标 | KI25矿物油 | FR3天然酯 | RAPO天然酯 | KI50EX合成酯 | TFO 100合成酯 |
|---|
| 外观 | 清澈透明、无沉淀物和悬浮物 |
| 运动黏度(40℃)/(mm2/s) | 9.86 | 36.00 | 33.32 | 28.73 | 28.33 |
| 含水量/(mg/kg) | 11 | 55 | 36 | 64 | 98 |
| 倾点/℃ | <-35 | -21 | -18 | -57 | <-58 |
| 密度(20℃)/(kg/m3) | 890.0 | 920.0 | 920.2 | 967.5 | 963.0 |
| 击穿电压(2.5 mm)/kV | 58.0 | 56.0 | 79.1 | 63.0 | 69.9 |
| 介质损耗因数(90℃) | 0.005 | 0.007 | 0.007 | 0.009 | 0.019 |
| 酸值/(mg·KOH/g) | 0.008 | 0.005 | 0.015 | 0.010 | 0.010 |
| 燃点/℃ | 172 | 360 | 362 | 314 | 309 |
| 闪点/℃ | 153 | 330 | 334 | 268 | 262 |
), ArticleFig(id=1304922073676144844, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=表1, caption=
5种绝缘液的主要性能参数
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| 性能指标 | KI25矿物油 | FR3天然酯 | RAPO天然酯 | KI50EX合成酯 | TFO 100合成酯 |
|---|
| 外观 | 清澈透明、无沉淀物和悬浮物 |
| 运动黏度(40℃)/(mm2/s) | 9.86 | 36.00 | 33.32 | 28.73 | 28.33 |
| 含水量/(mg/kg) | 11 | 55 | 36 | 64 | 98 |
| 倾点/℃ | <-35 | -21 | -18 | -57 | <-58 |
| 密度(20℃)/(kg/m3) | 890.0 | 920.0 | 920.2 | 967.5 | 963.0 |
| 击穿电压(2.5 mm)/kV | 58.0 | 56.0 | 79.1 | 63.0 | 69.9 |
| 介质损耗因数(90℃) | 0.005 | 0.007 | 0.007 | 0.009 | 0.019 |
| 酸值/(mg·KOH/g) | 0.008 | 0.005 | 0.015 | 0.010 | 0.010 |
| 燃点/℃ | 172 | 360 | 362 | 314 | 309 |
| 闪点/℃ | 153 | 330 | 334 | 268 | 262 |
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Iodine value for different insulating liquids
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| 液体类型 | 碘值/(gI2/100g) |
|---|
| FR3天然酯 | 130.1 |
| RAPO天然酯 | 132.6 |
| 25#矿物油 | <1.0 |
| KI50EX合成酯 | <1.0 |
| TFO 100合成酯 | <1.0 |
), ArticleFig(id=1304922073806168270, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304922064905855063, language=CN, label=表3, caption=
不同类型绝缘液的碘值
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| 液体类型 | 碘值/(gI2/100g) |
|---|
| FR3天然酯 | 130.1 |
| RAPO天然酯 | 132.6 |
| 25#矿物油 | <1.0 |
| KI50EX合成酯 | <1.0 |
| TFO 100合成酯 | <1.0 |
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