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Polyaspartic acid/tryptamine grafted copolymer and synthesizing method thereof

A polyaspartic acid, graft copolymer technology, applied in chemical instruments and methods, water/sludge/sewage treatment, special treatment targets, etc. The effect of reducing secondary pollution and improving utilization

Inactive Publication Date: 2018-06-22
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that existing polyaspartic acid has excellent resistance to calcium carbonate and calcium sulfate, but other properties are not superior, the purpose of the present invention is to provide a polyaspartic acid graft copolymer, which is better than existing polyaspartic acid graft copolymers. Some polyaspartic acid scale inhibitors have better scale and corrosion inhibition properties, and are green and efficient, non-toxic, phosphorus-free, biodegradable, and fluorescent, and can be used in industrial circulating cooling water treatment, reducing the Secondary pollution of industrial water and eutrophication of water bodies

Method used

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  • Polyaspartic acid/tryptamine grafted copolymer and synthesizing method thereof
  • Polyaspartic acid/tryptamine grafted copolymer and synthesizing method thereof
  • Polyaspartic acid/tryptamine grafted copolymer and synthesizing method thereof

Examples

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Effect test

preparation Embodiment 1

[0030] A kind of high-efficiency green industrial water treatment agent with fluorescent performance: the synthetic method of polyaspartic acid / tryptamine graft copolymer comprises the following steps: take by weighing 9.8g maleic anhydride with electronic balance and join in the tank that 10mL distilled water is housed In a four-neck flask, stir mechanically, raise the temperature to 60°C, wait until the maleic anhydride is completely dissolved, raise the temperature to 80°C, add 4.2g of urea, after the urea is completely dissolved, gradually raise the temperature to 160°C, and then add 0.82mL Phosphorus-sulfur mixed acid with a volume ratio of 1:1 is used as a dehydrating agent. The purpose is to make the dehydration more thorough. Let the system undergo polycondensation reaction at 160°C to remove water molecules. When the reaction system becomes viscous, transfer the product to The solid-state reaction device continues to react until the viscosity-average molecular weight i...

preparation Embodiment 2

[0034] A kind of high-efficiency green industrial water treatment agent with fluorescent performance: the synthetic method of polyaspartic acid / tryptamine graft copolymer comprises the following steps: take by weighing 9.8g maleic anhydride with electronic balance and join in the tank that 10mL distilled water is housed In a four-neck flask, stir mechanically, raise the temperature to 60°C, wait until the maleic anhydride is completely dissolved, raise the temperature to 85°C, add 4.2g of urea, after the urea is completely dissolved, gradually raise the temperature to 190°C, and then add 0.82mL Phosphorus-sulfur mixed acid with a volume ratio of 1:1 is used as a dehydrating agent. The purpose is to make the dehydration more thorough. Let the system undergo polycondensation reaction at 190°C to remove water molecules. After 2 hours of reaction, turn off the instrument and cool the system to room temperature, and then washed three times with distilled water to remove phosphorus s...

preparation Embodiment 3

[0038] A kind of high-efficiency green industrial water treatment agent with fluorescent performance: the synthetic method of polyaspartic acid / tryptamine graft copolymer comprises the following steps: take by weighing 9.8g maleic anhydride with electronic balance and join in the tank that 10mL distilled water is housed In a four-neck flask, stir mechanically, raise the temperature to 60°C, wait until the maleic anhydride is completely dissolved, raise the temperature to 75°C, add 4.2g of urea, after the urea is completely dissolved, gradually raise the temperature to 200°C, and then add 0.82mL Phosphorus-sulfur mixed acid with a volume ratio of 1:1 is used as a dehydrating agent. The purpose is to make the dehydration more thorough. Let the system undergo polycondensation reaction at 200 ° C to remove water molecules. After 2 hours of reaction, turn off the instrument and cool the system to room temperature, and then washed three times with distilled water to remove phosphorus...

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Abstract

The invention discloses a polyaspartic acid / tryptamine grafted copolymer and a synthesizing method thereof. The synthesizing method comprises the following steps: placing maleic anhydride and urea serving as raw materials in an oil bath; adding the maleic anhydride, distilled water, the urea and 1:1 phosphoric acid and sulfuric acid mixture into a four-opening flask; after mechanically stirring for 1 to 2 hours, transferring a product into a solid reaction device until the viscosity-average molecular weight is 5,000 to 10,000, cooling, adding the distilled water for washing, performing vacuumfiltrating, and drying to obtain polysuccinimide; mixing a certain amount of the polysuccinimide and a certain amount of water to form a suspension; mixing tryptamine and a suitable amount of water, slowly adding the mixture into the suspension, and reacting for 24 hours; regulating the pH, dropping the solution into absolute ethyl alcohol, pouring supernatant away, and performing vacuum drying for 24 hours to obtain the polyaspartic acid / tryptamine grafted copolymer. The invention provides a water treatment agent which is green, high-efficiency, non-toxic, phosphorus-free and biodegradable, has fluorescence, can be used in industrial circulating cooling water treatment, and reduces secondary pollution of industrial water, eutrophication of a water body and the like.

Description

technical field [0001] The invention relates to the field of environmental chemistry and functional polymer materials, relates to a high-efficiency green industrial water treatment agent with fluorescent properties and a preparation method thereof, in particular to a polyaspartic acid / tryptamine graft copolymer and a synthesis method thereof . Background technique [0002] In recent years, with the rapid development of industry, industrial water consumption has increased sharply. Among them, the shortage of water resources and the aggravation of water pollution have forced people to save water and protect the environment. The use of cooling water occupies a large proportion in industrial production. In the process of cooling water circulation, scaling and corrosion of equipment often occur, resulting in a decline in productivity and directly affecting economic benefits. In order to solve this problem, the method of adding scale and corrosion inhibitors is generally adopted...

Claims

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Application Information

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IPC IPC(8): C08G73/10C02F5/12C02F103/02
CPCC02F5/12C02F2103/023C02F2303/08C08G73/1092
Inventor 许英王春章张磊赵晓伟王谦高莹莹
Owner HENAN UNIVERSITY