Preparation method of electromagnetic shielding biological material and antimagnetic plate prepared by preparation method

Abstract

The invention discloses a preparation method of an electromagnetic shielding biological material. The preparation method comprises the following steps: step 1, cutting moso bamboo into bamboo chips; step 2, soaking in a sodium hydroxide solution with the concentration of 20% for 2 hours; step 3, continuously soaking in a sodium hydroxide solution with the concentration of 3%-10% for 16-24 hours; step 4, crushing the bamboos by using a crusher, and then putting the crushed bamboos into a dry distillation kiln to prepare bamboo charcoal; step 5, after carbonization, mixing the prepared bamboo charcoal with an analytically pure ferric nitrate solution by adopting a vacuum pressure impregnation process to prepare a bamboo charcoal / ferric nitrate compound; and step 6, carrying out secondary carbonization on the bamboo charcoal / ferric nitrate compound, crushing, and screening to obtain the carbon powder. Bamboo blocks are selected to be processed into bamboo powder to prepare bamboo charcoal, so that the unit surface area is increased, the contact area with a hot gas medium in a dry distillation kiln is increased, the energy consumption is low, the production efficiency is high, the charring reaction is sufficient, and the final charcoal yield, the charcoal yield, the bamboo charcoal graphitization degree and the conductivity are improved.

Description

technical field [0001] The invention relates to a static dissipative material, in particular to a preparation method of an electromagnetic shielding biological material and an antimagnetic plate prepared therefrom. Background technique [0002] While electromagnetic waves bring convenience to people's communication, work and life, they also bring many adverse effects. First of all, electromagnetic interference will directly affect the normal operation of electrical equipment and instruments in various fields of people's production and life. Severe electromagnetic interference can cause electronic devices to malfunction or even be damaged; Interception; Finally, after a large number of scientific experiments, it was found that long-term exposure to low-frequency electromagnetic radiation can damage the nervous system, hematopoietic system and immune cell functions of organisms. influences. For this, electromagnetic shielding is necessary. Contents of the invention [000...

AI Technical Summary

Problems solved by technology

First of all, electromagnetic interference will directly affect the normal operation of electrical equipment and instruments in various fields of people's production and life. Severe electromagnetic interference can cause electronic devices to malfunction or even be damaged; Interception; Finally, after a large number of scientific experiments, it was found that long-term exposure to low-frequency electromagnetic radiation can damage the nervous system, hematopoietic system and immune cell functions of organisms. influences

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