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Waste colophony used for modifying naphthalene water reducer during binding agent production

A naphthalene-based water-reducing agent and a production process technology, applied in the field of preparation of modified naphthalene-based water-reducing agent, can solve the problems of difficult separation and purification, high energy consumption, inability to discharge, etc., to achieve the effect of improving slump and increasing The effect of the number of branches

Inactive Publication Date: 2018-09-07
萧县沃德化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the shortage of fossil resources at home and abroad, more and more people are engaged in research on the development and use of forest resources. The use of rosin esters to synthesize adhesives has been widely used at present, but the waste rosin produced in the adhesive production process contains acetone, phenol, etc. , alkali and other pollutants to the environment, which cannot be discharged and need to be recycled. The current recycling method consumes a lot of energy and has a complicated process
[0003] Regarding, the treatment of waste rosin has always been a thorny issue in environmental protection. It is difficult to recover and reuse the recyclable components in waste rosin, and the cost of industrial recovery is high. However, because industrial waste rosin contains a large amount of Impurities, leading to greater limitations in the reuse of waste rosin

Method used

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  • Waste colophony used for modifying naphthalene water reducer during binding agent production
  • Waste colophony used for modifying naphthalene water reducer during binding agent production
  • Waste colophony used for modifying naphthalene water reducer during binding agent production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of waste rosin in the adhesive production process is used to modify the naphthalene-based water-reducer, and the waste rosin in the adhesive production process is used to modify the naphthalene-based water-reducer. It is made of the following raw materials in parts by weight:

[0026]

[0027]

[0028] The waste rosin in the adhesive production process is used for the preparation method of modified naphthalene-based water reducer, comprising the following steps:

[0029] S1. Add the industrial naphthalene of the weight component into the four-necked flask, heat it to 150°C and melt it. After melting, add concentrated sulfuric acid and water dropwise while stirring at 160°C. After 30 minutes, keep it warm for 4 hours. , detect the acidity value of the material;

[0030] S2. After the heat preservation reaction is completed, lower the temperature to 120°C, add an appropriate amount of water according to the acidity value, and hydrolyze for 30 minutes. After t...

Embodiment 2

[0033] A kind of waste rosin in the adhesive production process is used to modify the naphthalene-based water-reducer, and the waste rosin in the adhesive production process is used to modify the naphthalene-based water-reducer. It is made of the following raw materials in parts by weight:

[0034]

[0035] The waste rosin in the adhesive production process is used for the preparation method of modified naphthalene-based water reducer, comprising the following steps:

[0036] S1. Add the industrial naphthalene of the weight component into the four-necked flask, heat it to 145°C and melt it. After melting, add concentrated sulfuric acid and water dropwise at 155°C while stirring, drop it for 30 minutes, and keep it warm for 3 hours after dropping it. , detect the acidity value of the material;

[0037] S2. After the heat preservation reaction is completed, lower the temperature to 125°C, add an appropriate amount of water according to the acidity value, and hydrolyze for 35 ...

Embodiment 3

[0040] A kind of waste rosin in the adhesive production process is used to modify the naphthalene-based water-reducer, and the waste rosin in the adhesive production process is used to modify the naphthalene-based water-reducer. It is made of the following raw materials in parts by weight:

[0041]

[0042] The waste rosin in the adhesive production process is used for the preparation method of modified naphthalene-based water reducer, comprising the following steps:

[0043] S1. Add the industrial naphthalene of the weight component into the four-necked flask, heat it to 145°C and melt it. After melting, add concentrated sulfuric acid and water dropwise at 165°C while stirring, drop it in 45 minutes, and keep it warm for 5 hours after dropping it. , detect the acidity value of the material;

[0044] S2. After the heat preservation reaction is completed, lower the temperature to 115°C, add an appropriate amount of water according to the acidity value, and hydrolyze for 30 m...

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Abstract

The invention discloses a method for using waste colophony to modify a naphthalene water reducer during binding agent production. The modified naphthalene water reducer is prepared from, by weight, 200-350 parts of crude naphthalene, 220-400 parts of industrial concentrated sulfuric acid, 50-100 parts of waste colophony, 150-200 parts of formaldehyde solution, 400-600 parts of liquid caustic sodaand moderate water. The water reducer obtained by adopting the technical scheme can effectively prevent cement from collapsing, the preparation technology is green and environmentally friendly, and the industrial waste materials can be effectively recycled.

Description

technical field [0001] The invention relates to the field of preparation methods of modified naphthalene-based water reducers, in particular to the use of waste rosin in the adhesive production process for modified naphthalene-based water reducers. Background technique [0002] Due to the shortage of fossil resources at home and abroad, more and more people are engaged in research on the development and use of forest resources. The use of rosin esters to synthesize adhesives has been widely used at present, but the waste rosin produced in the adhesive production process contains acetone, phenol, etc. , Alkali, etc. are polluting substances to the environment, cannot be discharged, and need to be recycled. The current recycling method consumes a lot of energy and has a complicated process. [0003] Regarding, the treatment of waste rosin has always been a thorny issue in environmental protection. It is difficult to recover and reuse the recyclable components in waste rosin, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/22C08G16/04C04B103/30
CPCC04B24/226C04B2103/302C08G16/04
Inventor 马丽涛刘景相彭城董翠平王浩雨
Owner 萧县沃德化工科技有限公司
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