Title :
Increasing the insulating characteristics of chemically modified wood by covering a thin layer
Author :
Diakov, T. ; Georgiev, L.
Author_Institution :
Bulgarian Acad. of Sci., Sofia, Bulgaria
Abstract :
A study of a wood-polymer material is presented. An aluminium-oxide coating is deposited by electron-beam evaporation in order to increase the electric insulating properties of the material. The surface electrical resistivity and dielectric losses of the source and surface-modified material, which depend on the temperature and moisture condition, have been examined. Measurements of some other electric insulating characteristics are presented in a tabular form. The results show that the electric insulating properties of the Al2 O3-coated polymer material are considerably increased. The variation of the wear resistance of the coated samples has also been studied. When the polymer-to-wood ratio is 1:1 and the coating is a few microns thick, the optimum values of the electric insulating properties and mechanical strength are obtained
Keywords :
composite insulating materials; dielectric losses; filled polymers; organic insulating materials; surface conductivity; wear; wood; Al2O3 coating; chemically modified wood; dielectric losses; electron-beam evaporation; insulating characteristics; mechanical strength; moisture condition; surface electrical resistivity; wear resistance; wood-polymer material; Chemicals; Coatings; Dielectric losses; Dielectric materials; Dielectric measurements; Dielectrics and electrical insulation; Electric resistance; Moisture; Plastic insulation; Temperature dependence;
Conference_Titel :
Electrical Insulation, 1988., Conference Record of the 1988 IEEE International Symposium on
Conference_Location :
Cambridge, MA
DOI :
10.1109/ELINSL.1988.13947
