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Electrical Insulation Magazine, IEEE

Issue 1 • Date Jan.-Feb. 1994

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  • Application of glass fiber-reinforced plastics to electrical and electronic apparatus in Japan

    Page(s): 8 - 15
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (848 KB)  

    Aided by recent developments of component materials, as well as production techniques, glass fiber-reinforced plastics (GFRPs) are finding an increasing number of applications in the electrical and electronic sectors in Japan. In this paper, the focus is on practical applications of GFRPs in such electrical/electronic apparatus as heavy electric apparatus, superconducting/cryogenic apparatus, energy-producing apparatus, spacecraft, communication and broadcasting equipment, home electric appliances, medical apparatus, computers and office automation equipment. Also the characteristics of both thermosetting-type and thermoplastic-type GFRPs are covered, including mechanical, thermal and electrical properties.<> View full abstract»

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  • Compounding of ethylene-propylene polymers for electrical applications

    Page(s): 16 - 22
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (709 KB)  

    Compounding is the technology of converting the raw rubber resin into useful materials through the addition of various ingredients. The resulting composition is called a compound. A typical compound usually has the following ingredients: ethylene-propylene rubber, filler/reinforcing agent(s), plasticizer, antioxidants/ stabilizers, flame retardants, process aids, ion scavenger coupling agent, curing coagent, and curative. Proper selection of the ingredient(s) in each category requires that consideration be given to the desired physical, electrical and environmental properties, as well as cost, ease of mixing, chemical stability and ease of processing. Frequently these considerations may require compromises in one characteristic in order to improve another. In the following discussion, factors to be considered in the proper choice of each ingredient for the compounding of ethylene-propylene polymers are explored.<> View full abstract»

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  • Role of semiconducting compounds in water treeing of XLPE cable insulation

    Page(s): 23 - 27
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    The connection between cleanliness of semiconducting compounds and water tree growth at the semiconductor-dielectric interface was demonstrated. Changes to semiconducting compounds have improved the reliability of solid dielectric cables.<> View full abstract»

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Aims & Scope

The EI Magazine is specifically concerned with publishing articles in the development and characterization of the dielectric, chemical, mechanical, and environmental properties of all vacuum, gaseous, liquid, and solid electrical insulation, and with utilization of these materials in circuits and systems under conditions of use.

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Co-Editor-in-Chief
Edward Cherney

Co-Editor-in-Chief
Robert Fleming