Low-temperature rise magnetic core and preparation method thereof

Abstract

The invention provides a low-temperature rise magnetic core and a preparation method thereof, and relates to the technical field of magnetic core production. The magnetic core is prepared from the following raw materials: in parts by weight, 52-56 parts of iron oxide, 20-24 parts of copper oxide, 14-18 parts of manganese oxide, 8-12 parts of nickel oxide, 16-20 parts of cobalt sesquioxide, 12-16 parts of iridium oxide, 8-12 parts of ethyl acetate, 4-8 parts of boron nitride, 16-20 parts of niobium pentoxide, 12-16 parts of molybdenum dioxide, 8-12 parts of petroleum ether, 4-8 parts of siliconnitride, 2-4 parts of a crosslinking agent, 1-3 parts of a toughening agent and 1-2 parts of an antifoaming agent. The deficiencies in the prior art are overcome, the obtained magnetic core has the characteristic of low temperature rise, and even if at a state of different current overlapping, high power, low temperature rise and low loss are ensured; and meanwhile, the Curie temperature, impedance and other features of the magnetic core can be improved effectively so that the service life of the magnetic core is prolonged greatly, the internal stress is small, and the magnetic core has superior performance and is suitable for promotion.

Description

technical field [0001] The invention relates to the technical field of magnetic core production, in particular to a low-temperature rise magnetic core and a preparation method thereof. Background technique [0002] The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical core body materials. Magnetic cores are used in coils and transformers in various electronic devices. With the rapid development of digital communication technology and optical fiber communication technology, traditional analog communication equipment is constantly updated and eliminated. In broadband transformers of electronic circuits, pulse transformers in the fields of integrated business data networks, local area networks, wide area networks, background lighting, etc., and high permeability magnetic cores for common mode filter inductors in photovoltaic inverters, due to the development ...

AI Technical Summary

Problems solved by technology

[0003] The formula composition and production process of the current magnetic core are unreasonable, resulting in poor performance of the magnetic core

Especially in the state of superposition of different currents, while the current magnetic core ensures high power, its loss is too high due to the rapid temperature rise, which affects its normal use, and its service life is short, which brings great harm to the staff. Trouble