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A kind of macromolecule drag reducing agent and preparation method thereof

A drag-reducing agent and macromolecule technology, which is applied in the field of macromolecular drag-reducing agent and its preparation, can solve problems such as loss of drag-reducing effect of drag-reducing agent, stability of resistance-reducing agent, corrosion of steel grounding body, etc. The effect of rainwater loss, no pollution of resistivity and long service life

Inactive Publication Date: 2017-05-31
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these resistance-reducing agents have a certain resistance-reducing effect in a short period of time after being applied, they cause serious corrosion to the steel grounding body, and the resistance-reducing effect will decline rapidly as time goes by.
[0005] (2) Stability problem of resistance reduction
The manufacturer pursues the short-term resistance reduction effect, and adds a large amount of inorganic salts to the resistance reduction agent. Although it can effectively reduce the grounding resistance of the grounding device in the short term, the resistance reduction effect is unstable, because in this type of resistance reduction agent The contained inorganic salts will lose the resistance-reducing effect of the resistance-reducing agent with the rapid loss of rainwater, so that the grounding resistance of the grounding device will rebound rapidly
[0006] (3) Environmental pollution of drag reducing agents
[0007] Therefore, it is necessary to invent a macromolecular drag reducing agent, which can improve the shortcomings of existing drag reducing agents, such as easy loss and large corrosion.

Method used

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  • A kind of macromolecule drag reducing agent and preparation method thereof
  • A kind of macromolecule drag reducing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 The method for preparing the macromolecular resistance reducing agent is as follows.

[0027] (1) Weigh 20g of sodium bentonite into a beaker, then add 100mL of deionized water, stir at 80℃ for 3h, add 5g of completely dissolved cetyltrimethylammonium bromide, and continue After stirring for 12 hours, the obtained solution was filtered, and the filtered product was washed with deionized water until there was no foam, and dried in a vacuum drying oven to obtain organically modified bentonite.

[0028] (2) Add a certain amount of vacuum-dried organic bentonite into the beaker, add 100 ml of water, stir at 60°C for 3 hours at high speed to form a uniform suspension, and then cool to room temperature. Then add 10.5g of dopant sodium p-toluenesulfonate, and then drop in 5g of pyrrole monomer. After fully stirring and dispersing for about 1h, use the dropping funnel to slowly drop 150ml of 1mol / L ferric chloride aqueous solution to continue the reaction 6h. After stand...

Embodiment 2

[0029] Example 2 The method for preparing the macromolecular resistance reducing agent is as follows.

[0030] (1) Weigh 20g of sodium bentonite into the beaker, then add 100mL of deionized water, stir at 80℃ for 3h, add 6g of completely dissolved cetyltrimethylammonium bromide, and continue After stirring for 12 hours, the obtained solution was filtered, and the filtered product was washed with deionized water until there was no foam, and dried in a vacuum drying oven to obtain organically modified bentonite.

[0031] (2) Add a certain amount of vacuum-dried organic bentonite into the beaker, add 100ml of water, stir at 60°C for 3h at high speed to form a uniform suspension, and then cool to room temperature. Then add 8g of dopant sodium p-toluenesulfonate, and then drop 6g of pyrrole monomer. After fully stirring and dispersing for about 1h, slowly drop 175ml of 1mol / L ferric chloride aqueous solution with a dropping funnel, and continue the reaction for 6h . After standing and...

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Abstract

The invention discloses a novel macromolecular drag-reducing agent and a preparation method thereof. The drag-reducing agent is composed of the following components in terms of weight percentage: 50%-60% of a leading agent, and 5%-10% of a modifier , conductive material 20%~30%, auxiliary agent 5%~10%, the main agent is sodium bentonite, the modifier is cetyltrimethylammonium bromide, and the conductive material is polypyrrole , the auxiliary agent is sodium p-toluenesulfonate and ferric chloride solution. The invention adopts a specific formula, and through the joint action of the main agent and the conductive material, it can greatly improve the defect that the drag reducing agent is easy to lose with rainwater, and the service life is longer; the corrosion to the base metal is small, and there is basically no corrosion resistance to the iron-based metal. Corrosion; resistance reduction effect is good, the resistivity can reach 1.49Ω·m, no pollution to the environment, non-toxic.

Description

Technical field [0001] The invention relates to a macromolecular resistance reducing agent and a preparation method thereof. Background technique [0002] Grounding is an important means to ensure the safety of electrical, communications, microelectronics and other equipment, buildings and people. In order to ensure the normal operation of the power system and the safety of people and equipment, the electrical equipment of power plants and substations must be reliably grounded and have a low grounding resistance value. However, due to objective conditions, only angle iron piles, It is usually difficult to extend the grounding body and expand the grounding grid to meet such high requirements. Grounding resistance reducing agent is an auxiliary material, which has been widely used in grounding engineering. Its resistance reduction and corrosion inhibition performance is stable, and the effect is good. It has been written into national standards and related industry standards. Prac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/12C09K17/40H01B13/00H01R4/66
Inventor 朱志平田野肖剑峰柳森
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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