Method for Improving the Comparative Tracking Index of Polymer Composites | Center za prenos tehnologij in inovacij na Institutu "Jožef Stefan"

Method for Improving the Comparative Tracking Index of Polymer Composites

Publication Number: IN201404239I4
Application Date: 31. 08. 2014
Assignee/Applicant: Sabu Thomas, Jožef Stefan Institute [SI]
Inventor: Harinarayanan Puliyalil, Uroš Cvelbar, Miran Mozetič, Sabu Thomas
Title: Method for Improving the Comparative Tracking Index of Polymer Composites (original title), Increasing comparative tracking index of electrical devices, used to e.g. modify electronic device, comprises e.g. inserting the electrical devices into processing chamber, and evacuating the processing chamber down to specified pressure (DWPI Title)
Description: Novelty: Increasing comparative tracking index (CTI) of electrical devices comprising at least two electrodes electrically insulated with composite material containing glass particles, preferably glass fibers and metallic fillers embedded in polymer matrix, comprises e.g. (a) inserting the electrical devices into a processing chamber, (b) evacuating the processing chamber down to the pressure of 100, preferably 1 Pa, and (c) exposing the electrical devices in the processing chamber to oxygen ions of kinetic energy of 5-80 eV, preferably 10-30 eV. Use: The method is useful for: increasing CTI of electrical devices; modifying an electronic device, where the electronic device comprises a product that comprises insulators, rotors or commutators (all claimed); and improving the CTI performances of the polymer matrix composites by surface modification by means of oxygen plasma treatment. Advantage: The method: provides the CTI without requiring the need of additional polymer (halogenated polymers, phosphorus or nitrogen containing polymers), hence eco-friendly; utilizes the glass fibers embedded in polymer matrix without significant distortion of the bulk properties of insulating material; and utilizes the oxygen ions that do not only cause preferential heating of the surface of composite material containing glass particles, preferably glass fibers, embedded in polymer matrix, but interacts chemically with hydrogenated carbon material from which the polymer is obtained.
Drawings:
Category: Physical sciences
Technology application codes: Industrial Technologies (Industry, Materials, Transport), Physical and exact sciences
Market application codes: Other electronics related products, Industrial products
www: Public reference from the Derwent Innovation Database to the Indian patent
Patent offices: India