Sound absorbing paint for lowering noise of electrical equipment

Abstract

The invention discloses sound absorbing paint for lowering noise of electrical equipment. The sound absorbing paint is prepared through the following steps that 1, by weight, clay powder, sepiolite, methyl sulfonic acid ester and crylic acid are added into a mixing and stirring machine for being evenly stirred and mixed, and a mixed material is obtained; 2, the mixed material is added to a reaction kettle, azo dimethyl valeronitrile and glass fibers are added and heated to 60 DEG C, stirring is conducted for 15 minutes, then the temperature is raised to 75 DEG C under the protection of nitrogen gas, stirring is continued for 18 minutes, the mixture is lowered to the room temperature, and a first intermedium is obtained; 3, the first intermedium is heated to 50 DEG C at normal pressure and stirred for 25 minutes, and a second intermedium is obtained; 4, ethyl acetate and barium stearate are added to the second intermedium for being evenly mixed, and the sound absorbing paint is obtained. The sound absorbing paint is sprayed on a firewall of a converter transformer, the sound absorption and noise reduction effects are greatly improved, and it is proved by tests that the noise reduction rate of a noise reduction device sprayed with the sound absorbing paint reaches over 90%.

Description

technical field [0001] The invention relates to a sound-absorbing coating used for noise reduction of industrial and electric devices. Background technique [0002] Industrial production and power equipment operation will cause noise pollution to the environment; for example, during the operation of the converter transformer, due to the high noise, it will cause serious noise pollution to the surroundings, so the noise emitted by it needs to be controlled . The commonly used control method at present is the barrier method, which installs a sound insulation barrier in front of the converter transformer or between the converter transformer body and the cooler, but its effect is limited, and it is inconvenient to remove during maintenance. And the Chinese patent application number is 200810007458.4 discloses a kind of sound-absorbing coating and method for noise reduction, which reduces noise through the method of combining sound barriers and firewalls. Although a certain nois...

AI Technical Summary

Problems solved by technology

At present, the commonly used control method is the barrier method, which installs a sound insulation barrier in front of the converter transformer or between the converter transformer body and the cooler, but its effect is limited, and it is inconvenient to remove during maintenance

And the Chinese patent application number is 200810007458.4 discloses a kind of sound-absorbing coating and method for noise reduction, which reduces noise through the method of combining sound barriers and firewalls. Although a certain noise reduction effect has been achieved, there are still The following disadvantages: 1) The effect of noise reduction only through the firewall and noise barrier is still limited; 2) The setting of the firewall makes the sound energy reflect in a limited space and strengthen it locally, and long-term use will cause certain damage to the equipment