Polyurethane electromagnetic wave absorbing layer for anti-interference meter box and preparation method of polyurethane electromagnetic wave absorbing layer

Abstract

The invention discloses a polyurethane electromagnetic wave absorbing layer for an anti-interference meter box. A preparation method of the polyurethane electromagnetic wave absorbing layer comprises the following steps: firstly, taking a proper amount of reactant; drying polyhydric alcohol for 30-60 minutes at a vacuum degree of 90-130 DEG C; adding iron plated graphene granules and a reinforcing agent according to set weight proportions, uniformly stirring, adding diisocyanate and an organic metal catalyst according to set weight proportions, heating to 80-90 DEG C, and continuously stirring to react for 10-20 minutes; and finally, adding an accelerant and a stabilizing agent according to set weight proportions, uniformly stirring again, pouring a mixture obtained through reaction into a special grinding tool of 2mm thick, curing for 3-4 days, and taking out, thereby obtaining a polyurethane wave absorbing material. The polyurethane-based wave absorbing layer disclosed by the invention consists of polyurethane and a wave absorbing agent. A sandwiched wave absorbing layer can be optimally combined according to specific application environments, and then requirements of wide absorbing frequency bandwidth, light weight and the like can be met.

Description

technical field [0001] The invention relates to the field of electric power metering equipment, in particular to an electromagnetic wave-absorbing layer applied to an anti-interference electric meter box and a preparation method thereof. Background technique [0002] With the development of economic globalization, our electricity demand keeps increasing year by year. However, my country's electric power sector lacks efficient means in terms of electricity inspection and management, which leads to the increasingly obvious behavior of stealing electricity. The generation of electricity theft has seriously damaged the normal electricity consumption of electricity users and caused adverse effects. Therefore, power companies must adopt corresponding power marketing anti-stealing technology for stealing electricity, effectively improve the level of anti-stealing electricity, and realize the optimal economic benefits of enterprises. [0003] The most difficult method of stealing ...

AI Technical Summary

Problems solved by technology

The current meter box cannot block the influence of strong magnetic fields or high-voltage electric shocks, so this method of stealing electricity has almost no traces and is difficult to obtain evidence

As a kind of interference stealing method, the high-frequency radiation interference stealing method has short operation time and strong concealment. The purpose of disturbing the electric meter can be achieved by transmitting a high-power signal outside the meter box, without changing any power equipment and metering devices. part, without leaving any traces at the scene, so that even if the electricity theft inspectors find electricity theft in a short period of time, they cannot be identified. They can only replace the electric energy meter, and it is very difficult to recover the electric energy.

These characteristics make the use of high-frequency radiation jammers to conduct electromagnetic interference on electric energy meters to steal electricity has spread, so it is necessary to prevent the improvement of the meter box

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