Capacitance impregnating agent and preparation method thereof
An impregnating agent and capacitor technology, applied in the field of capacitor impregnating agent and its preparation, can solve problems such as poor self-healing conditions of dielectrics, and achieve the effects of reducing corrosion, high energy density and low energy density, and improving partial discharge performance.
Inactive Publication Date: 2016-06-08
ANHUI FEIDA ELECTRICAL TECH CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to provide a method for preparing a capacitor impregnating agent for the problem of poor self-healing conditions of the medium after treatment with the existing impregnating agent
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[0019] A preparation method of capacitor impregnating agent, comprising the following steps:
[0020] (1) The parts by weight of each raw material of the capacitor impregnating agent are: 96 parts of castor oil, 2 parts of zeolite powder, 10.7 parts of hardening agent HY9560.3 parts, 1 part of MDI;
[0021] (2) Pump the corresponding weight of castor oil into the mixing tank at 80-90°C, check the water content of the castor oil, if it is unqualified, dehydrate it until the water content in the castor oil is less than 10μg / 0.2ml and use it for later use ;
[0022] (3) Take by weighing the zeolite powder of corresponding weight, slowly add in the mixing tank that is stirring, cover the mixing tank with a lid after adding;
[0023] (4) Weigh the corresponding weight of hardener HY951 and hardener HY956 in proportion, pour them into a dry container, stir with a stirring rod for 15-20 minutes to obtain the hardener mixture, open the lid of the mixing tank, and slowly pour the hard...
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The invention discloses a capacitance impregnating agent and a preparation method thereof. Castor oil, zeolite powder, a hardener HY951, a hardener HY956 and MDI with corresponding weights are added into a stirring cylinder with the temperature 80-90 DEG C at one time, and continuous stirring is kept. Compared with the prior art, the capacitance impregnating agent and the preparation method have the advantages that the zeolite powder, the hardener mixer and MDI are added into the castor oil relatively low in water content, the continuous stirring under a high temperature is kept in the preparation process, and full reaction and mixing of the components are realized; after the capacitance impregnating agent is applied to a DC, AC or PFC capacitor, air intervals at capacitance pole plate edges and in a medium are eliminated, the local discharging performance of the capacitor and the self-healing condition of the medium are improved, the moisture absorbing capability is high, the water resistance is relatively high, the corrosion of the pole plate and the decreasing of capacitance are reduced, the service lifetime of the capacitor is improved, and the requirements of a high energy density and low equivalent series resistance of the capacitor are met.
Description
technical field [0001] The invention belongs to the technical field of capacitor preparation, and in particular relates to a capacitor impregnating agent and a preparation method thereof. Background technique [0002] The main function of the AC capacitor is to cut off the direct current between the stages through the AC signal. The larger the capacitance value, the smaller the voltage drop, the larger the capacitance value, and the smaller the resonant frequency. The capacitor will be inductive at lower frequencies, which will cause signal The attenuation of high-frequency components increases, and PFC capacitors are widely used in power electronic devices. Harmonic and reactive power pollution are generated, so the selection of the capacity of the PFC output electrolytic capacitor should be considered; the impregnating agent of the capacitor acts as a liquid insulating medium to fill the gap between the solid media and improve the dielectric strength. The performance unde...
Claims
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Login to View More IPC IPC(8): H01G13/04
CPCH01G13/04
Inventor 胡忠胜华玲萍吴良军
Owner ANHUI FEIDA ELECTRICAL TECH CO LTD