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Preparation method for special resistance reducing agent for lightning protection grounding engineering

A technology of lightning protection grounding and resistance reducing agent, applied in the direction of connection, connecting contact material, cable/conductor manufacturing, etc., can solve the problems of long-lasting lightning protection effect, easy failure, failure of resistance reducing agent, etc. The effect of performance and lightning protection effect, simple construction process and simple preparation process

Inactive Publication Date: 2017-08-04
宁波高新区远创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in view of the salt content with strong conductivity contained in the traditional resistance reducing agent, it is easy to cause corrosion to the metal grounding body, so that the conductivity of the grounding body is reduced, and the lightning protection effect is reduced. In order to solve the problem of the gradual failure of the agent, a composite material with good conductivity is formed by the three-dimensional network structure formed by self-made carbonized rice husk fiber and polyacrylamide, and cement is added as a strengthening and curing material to obtain a special resistance-reducing agent for lightning protection and grounding projects. Methods
The resistance reducing agent obtained in the present invention can effectively protect the grounding body and avoid corrosion of the grounding body during use. At the same time, it has excellent electrical conductivity and a long duration of lightning protection effect, which effectively solves the problem that the traditional resistance reducing agent is easy to corrode the metal of the grounding body and is easy to fail. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018]Weigh 400g of rice husk, wrap it with gauze, bury it in the soil at a depth of 10cm, spray 30mL of water on the soil surface every 8h, take out the gauze after 10 days, open the gauze, collect the rice husk, and wash the rice husk with deionized water 3 times, then transfer the washed rice husks to a freezer, freeze with liquid nitrogen for 10 seconds, and crush for 15 minutes. Collect the crushed rice husks, place them in an oven, and dry them at 105°C until weight, to obtain pretreated rice husk powder; take 300g of the above-mentioned pretreated rice husk powder, pour it into a beaker filled with 600mL mass fraction of 8% sodium hydroxide solution, and then move the beaker into a digital speed measuring constant temperature magnetic stirrer, At a temperature of 55°C and a rotation speed of 600r / min, stir and react at a constant temperature for 3 hours, then filter the material in the beaker, collect the filter cake, wash the filter cake with deionized water until the w...

example 2

[0021] Weigh 500g of rice husk, wrap it with gauze, bury it in the soil at a depth of 20cm, spray 50mL of water on the soil surface every 10h, take out the gauze after 20 days, open the gauze, collect the rice husk, and wash the rice husk with deionized water 5 times, and then transfer the washed rice husks to a freeze grinder, freeze with liquid nitrogen for 20s, and grind for 30 minutes, collect the crushed rice husks, put them in an oven, and dry them at 110°C until weight, to obtain pretreated rice husk powder; take 380g of the above-mentioned pretreated rice husk powder, pour it into a beaker filled with 800mL mass fraction of 10% sodium hydroxide solution, and then move the beaker into a digital speed measuring constant temperature magnetic stirrer, At a temperature of 65°C and a rotation speed of 800r / min, stir and react at a constant temperature for 5 hours, then filter the material in the beaker, collect the filter cake, wash the filter cake with deionized water until ...

example 3

[0024] Weigh 450g of rice husk, wrap it with gauze, bury it in the soil at a depth of 15cm, spray 40mL of water on the soil surface every 9h, take out the gauze after 15 days, open the gauze, collect the rice husk, and wash the rice husk with deionized water 4 times, then transfer the washed rice husks into a freeze grinder, freeze with liquid nitrogen for 15 seconds, and crush for 22 minutes. Collect the crushed rice husks, place them in an oven, and dry them at a temperature of 107°C until constant weight, to obtain pretreated rice husk powder; take 340g of the above-mentioned pretreated rice husk powder, pour it into a beaker filled with 700mL mass fraction of 9% sodium hydroxide solution, then move the beaker into a digital speed measuring constant temperature magnetic stirrer, At a temperature of 60°C and a rotation speed of 700r / min, stir and react at a constant temperature for 4 hours, then filter the material in the beaker, collect the filter cake, wash the filter cake ...

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Abstract

The invention discloses a preparation method of a special resistance-reducing agent for lightning protection and grounding engineering, and belongs to the technical field of resistance-reducing agents. In the present invention, rice husks are firstly buried in the soil to degrade the rice husks, and then under alkaline conditions, the lignin components are dissolved and removed, and then butyl phthalate is used as raw material, polyvinyl alcohol and dodecylbenzenesulfonic acid Sodium is used as a template. Under the condition of oil bath, butyl phthalate is hydrolyzed, and the hydrolyzed product is evenly dispersed in rice husk powder. The nano-titanium dioxide produced by hydrolysis is used as a catalyst to further degrade the rice husk fiber, and then carbonized. Ultra-fine carbonized rice husk fiber, followed by acrylamide as a monomer, combined with carbonized rice husk fiber as a filler, and finally mixed with cement to obtain a special drag-reducing agent for lightning protection and grounding projects. The resistance reducing agent obtained by the invention can effectively protect the grounding body and avoid corrosion of the grounding body during use, has excellent electrical conductivity and good lightning protection effect, and effectively solves the problem that the traditional resistance reducing agent is easy to corrode the metal of the grounding body and is easy to fail.

Description

technical field [0001] The invention discloses a preparation method of a special resistance-reducing agent for lightning protection and grounding engineering, and belongs to the technical field of resistance-reducing agents. Background technique [0002] The grounding system is an important part of the entire lightning protection system. It connects the sky net and the ground grid to improve the leakage rate of the ground grid as a whole. The main technical indicator of the lightning protection grounding system is the grounding resistance, and the smaller the grounding resistance, the better. In order to reduce the grounding resistance, a resistance reducing agent is generally used. The function of the resistance reducing agent is to reduce the grounding resistance of various grounding devices. At present, the drag reducing agent is composed of various components, such as fine graphite, bentonite, curing agent, lubricant, conductive cement, etc., so as to become a good con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66H01R43/00H01B1/18H01B1/24H01B13/00
CPCH01R4/66H01B1/18H01B1/24H01B13/00H01R43/00
Inventor 何迎春许丽君李雪晴
Owner 宁波高新区远创科技有限公司
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