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老化对绝缘纸板比表面积的影响

摘要第7-8页
Abstract第8页
Chapter 1 Introduction第11-22页
    1.1 Research background and significance of Transformer insulation pressboard第11-12页
    1.2 Current research status of insulation aging in oilpaper第12页
    1.3 The criterion of oilpaper insulation aging第12-14页
        1.3.1 Gas chromatography mentioned in 1970s第12-13页
        1.3.2 Furfural content in the oil第13页
        1.3.3 Degree of polymerization of insulating paper第13-14页
        1.3.4 Water第14页
    1.4 Concept of specific surface area第14页
    1.5 The main content of this article第14-15页
    1.6 Cellulose insulation pressboard structure第15页
    1.7 Insulation paper aging mechanisms第15-17页
    1.8 The characteristics of paper fiber第17-19页
        1.8.1 The length of the fiber第17-18页
        1.8.2 Roughness of fiber第18-19页
        1.8.3 The strength of fiber第19页
    1.9 The influence factors of paper structure第19-21页
        1.9.1 Paper performance第19-20页
        1.9.2 Tightness第20-21页
    1.10 Influence of mechanical properties第21-22页
        1.10.1 The tensile strength第21页
        1.10.2 The degree of resistance to break第21页
        1.10.3 The degree of tear第21-22页
Chapter 2 Samples preparation第22-34页
    2.1 Preparation principle第22-23页
    2.2 Sample preparation第23-25页
        2.2.1 The experimental materials第23页
        2.2.2 Experimental apparatus第23-24页
        2.2.3 Test methods第24页
        2.2.4 The experimental process for using oil absorption paper第24-25页
    2.3 Sample Preparation第25-32页
        2.3.2 The experimental process for using absolute ethyl alcohol第27-30页
        2.3.3 Using ultrasonic vibration method cleaning transformers oil-impregnated cellulosecardboard samples of standard processes第30-31页
        2.3.4 Weighed sample第31-32页
    2.4 Determination of the specific surface area第32-34页
        2.4.1 The establishment and setting file第32页
        2.4.2 Sample preparation第32-33页
        2.4.3 Degassing第33页
        2.4.4 Sample Analysis第33页
        2.4.5 Data processing第33-34页
Chapter 3 BET specific surface area Test results and analysis第34-49页
    3.1 Test Principle第34-35页
    3.2 Test Methods第35-37页
    3.3 BET SSA Test results by only using oil absorbing papers第37-44页
    3.4 BET Test results graph for 0-40 years of aging第44页
    3.5 BET Specific Surface Area Test Results by sing absolute ethyl alcohol第44-48页
    3.6 BET Test results graph for 0-40 years of aging by using absolute ethyl alcohol第48-49页
Chapter 4 Test results analysis第49-51页
    4.1 BET Test results comparison第49-50页
    4.2 Test results analysis第50-51页
Chapter 5 Conclusions第51-52页
    5.1 Conclusion第51-52页
References第52-57页
Acknowledgement第57页

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