Insulating glue solution, preparation method and application thereof, and separating magnetic piece obtained by using insulating glue solution
A technology of insulating glue and magnetic isolation sheet, which is applied in the direction of magnets, adhesives, magnetic objects, etc., can solve the problems of poor insulation effect and large eddy current generated by magnetic isolation sheet, so as to improve the insulation effect, improve the insulation effect and reduce power loss Effect
Active Publication Date: 2019-11-05
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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Problems solved by technology
[0009] Therefore, it is desired to develop a new method for insulating the fragments of the magnetic spacer to solve the problem that the insulating effect between the adjacent fragments in the strip after the split in the prior art is relatively poor and cause the magnetic spacer to generate relatively poor insulation during use. The big eddy problem
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0058] A magnetic isolation sheet, the preparation method is as follows:
[0059] Add 130g of silica sol into the beaker, then add 70g of polyurethane, 2g of silane coupling agent and 0.4g of surfactant, stir at 25°C for 2 hours, and finally make insulating glue.
[0060] Then take the split amorphous and nanocrystalline strip MS1400, cut out 4 pieces of strips with a length of about 25mm, dip them in the above-mentioned insulating glue for a few seconds, and then slowly lift them out for drying treatment; tear off the nanocrystalline strips after drying A transparent release film on one side of the material, and then respectively paste and stack four pieces of nanocrystalline ribbons together to obtain a magnetic isolation sheet.
Embodiment 2-3
[0062] The difference from Example 1 is that 90 g of silica sol and 110 g of polyurethane (embodiment 2), and 160 g of silica sol and 40 g of polyurethane (embodiment 3) were added.
Embodiment 4-6
[0064] The difference from Examples 1-3 is that the silica sol is replaced by magnesium sol.
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Abstract
The invention provides an insulating glue solution, a preparation method and an application thereof, and a separating magnetic piece obtained by using the insulating glue solution. 100 wt% of the insulating glue solution comprises 45-80 wt% of an aqueous inorganic nano-solution, 0.1-3 wt% of a modifier and 20-55 wt% of a film forming aid. The insulating glue solution can form an insulating glue layer on the surface of a band, and insulating colloid particles can permeate into a gap between adjacent fragment slits in the splintered band to form the insulating layer.
Description
technical field [0001] The invention belongs to the technical field of magnetic isolation sheets for wireless charging, and relates to an insulating glue, a preparation method and application thereof, and a magnetic isolation sheet obtained therefrom. Background technique [0002] Wireless charging technology (Wireless charging technology or Wireless charge technology) is derived from wireless power transmission technology, which means that a device with a battery does not need the help of electric wires, and uses the principle of electromagnetic wave induction or other related AC induction technology to be used at the sending end and the receiving end. A technology in which corresponding equipment sends and receives induced AC signals for charging. [0003] At present, the application of wireless charging technology in wearable devices, mobile phones, tablets and other terminal fields is mainly electromagnetic induction wireless charging technology. An alternating electrom...
Claims
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IPC IPC(8): C09J175/04C09J11/04C09J11/06C09J7/30C09J7/29H05K9/00H01F41/02H01F7/00H02J50/70
CPCC09J11/04C09J11/06C09J175/04C09J2475/00C09J7/29C09J7/30C09J2301/16H01F7/00H01F41/02H05K9/0075H02J50/70C08K3/36C08K5/54
Inventor 付亚奇刘阳阳
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD