Parameters characterizing the charge state of dielectrics

• Autorzy: Łowkis B.

Identyfikatory

DOI

10.1515/msp-2017-0065

• Języki publikacji: EN

Abstrakty

EN

This paper presents three physical sources of the electric field in dielectrics: excess free volume charges with the distribution q_v(x,y,z), free surface charges with the distribution q_s(x,y,z) and frozen polarization state in the dielectric. They have a deciding influence on the parameters of the electret, in particular they determine the total lifetime of the electret and technical components made of it. The indeterminacy related to the mutual proportions of the spatial and surface charges was discussed: one can find an infinite number of distributions of surface q_se(x,y,z) and spatial q_ve(x,y,z) charges leading to the same distribution of the electric field E(x,y,z). A general case of electret was considered, where a coexistence of relaxation decay of frozen polarization and Maxwellian relaxation dependent on volume conductivity of the dielectric is assumed. An attempt to interpret the chargé lifetime in real electrets was made.

Słowa kluczowe

EN

dielectric; polymer; electrets; charge; lifetime

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2017
• Tom: Vol. 35, No. 3
• Strony: 601--605
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Łowkis B.

• Wroclaw University of Science and Technology, Faculty of Electrical Engineering, 8 Janiszewskiego St., 50-377 Wroclaw, Poland

Bibliografia

• [1] ŁOWKIS B., MOTYL E., Technical University of Wroclaw Materials Science VII, 2-3 (1981), 251.
• [2] ŁOWKIS B., Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Monografie, 47 (16) (2010), 1.
• [3] MOLINIE P., IEEE T. Plasma Sci., 40 (2) (2012), 167.
• [4] TABTI B., YAHIAOUI B., BENDAHMANE B., IEEE T. Dielect. El. In., 21 (2) (2014 ), 829.
• [5] THAKUR R., DAS D., DAS A., Fiber. Polym., 15 (7) (2014), 1436.
• [6] SESSLER G. M., FIGUEIREDO M.T., IEEE T. Dielect. El. In., 11 (2) (2004), 192.
• [7] PLOPEANU M. C., NOTINGHER P.V., IEEE T. Dielect. El. In., 18 (5) (2011), 1393.
• [8] SINGH R., J. Electrostat., 72 (4) (2014), 322.
• [9] KACHI M., NEMAMCHA M., TABTI B., DASCALESCU L., J. Electrostat., 69 (4) (2011), 394.
• [10] ALBRECHT V., JANKE A., NÉMETH E., SPANGE S., SCHUBERT G., SIMON F., J. Electrostat., 67 (1) (2009), 7.
• [11] HILCZER B., MAŁECKI J., Elektrety i piezopolimery, PWN, Warszawa, 1992.
• [12] SAXENA P., GAUR M.S., SHUKLA P., KHARE P.K., J. Electrostat., 66 (11-12) (2008), 584.