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Concrete release agent and preparation method therefor

A concrete release agent and modification technology, which is applied in the field of concrete release agent, can solve problems such as easy delamination, and achieve the effects of reducing pores, simple operation, and low cost

Active Publication Date: 2018-11-30
上海知碳电力工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main component of waste engine oil is mineral oil. Mineral oil is not harmful to the human body. Many people dilute waste engine oil with water before using it. However, it is easy to separate when oil and water are mixed together.

Method used

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  • Concrete release agent and preparation method therefor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The concrete release agent of the present embodiment includes the following raw materials in parts by weight: 7 parts of modified lignin, 25 parts of waste engine oil, 0.03 part of triethanolamine, 1 part of alkylphenol polyoxyethylene ether, sodium octadecylsulfonate 0.8 parts, 3 parts of sodium carboxymethylcellulose, and 70 parts of deionized water.

[0020] The preparation method of modified lignin: mix calcium lignosulfonate and deionized water at a mass ratio of 1:1, add azobisisobutyronitrile equivalent to 0.1% of lignosulfonate mass and lignin Acrylic acid with 15% mass of sulfonate, stirred evenly, then heated up to 80°C, and reacted for 1.5 hours to obtain modified lignin.

[0021] The preparation method of the concrete release agent of this embodiment includes the following steps: adding modified lignin to waste engine oil, then adding deionized water, stirring evenly to obtain a mixture, and raising the temperature to 70°C; then adding triethanolamine to the...

Embodiment 2

[0023] The concrete release agent of the present embodiment includes the following raw materials in parts by weight: 5 parts of modified lignin, 35 parts of waste engine oil, 0.05 part of triethanolamine, 0.7 part of alkylphenol polyoxyethylene ether, sodium octadecylsulfonate 0.5 parts, 4 parts of sodium carboxymethylcellulose, and 78 parts of deionized water.

[0024] The preparation method of modified lignin: mix sodium lignosulfonate and deionized water at a mass ratio of 2:1, add azobisisobutyronitrile equivalent to 0.2% of lignosulfonate mass and equivalent lignin Acrylic acid with 12% sulfonate mass was stirred evenly, then heated to 100°C, and reacted for 1.5 hours to obtain modified lignin.

[0025] The preparation method of the concrete release agent of this embodiment includes the following steps: adding modified lignin to waste engine oil, then adding deionized water, stirring evenly to obtain a mixture, and raising the temperature to 65°C; then adding triethanolam...

Embodiment 3

[0027] The concrete release agent of the present embodiment includes the following raw materials in parts by weight: 10 parts of modified lignin, 22 parts of waste engine oil, 0.02 part of triethanolamine, 0.9 part of alkylphenol polyoxyethylene ether, sodium octadecylsulfonate 1.2 parts, 2 parts of sodium carboxymethylcellulose, 55 parts of deionized water.

[0028] The preparation method of modified lignin: mix lignosulfonate (a mixture of calcium lignosulfonate and sodium lignosulfonate at a mass ratio of 1:1) and deionized water at a mass ratio of 3:1, and add Add azobisisobutyronitrile with 0.2% of the mass of lignosulfonate and acrylic acid equivalent to 8% of the mass of lignosulfonate, stir evenly, then raise the temperature to 60°C, and react for 3 hours to obtain modified lignin.

[0029] The preparation method of the concrete release agent of this embodiment includes the following steps: adding modified lignin to waste engine oil, then adding deionized water, stirri...

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Abstract

The invention relates to a concrete release agent and a preparation method therefor. The concrete release agent disclosed by the invention is mainly prepared from the following raw materials in partsby weight: 5-10 parts of modified lignin, 22-35 parts of waste engine oil, 0.02-0.05 part of triethanolamine, 0.7-1 part of alkylphenol polyoxyethylene ether, 0.5-1.2 parts of sodium octadecyl sulfonate, 2-4 parts of sodium carboxymethyl cellulose and 55-78 parts of deionized water. The invention further discloses the preparation method for the concrete release agent. The concrete release agent disclosed by the invention is relatively low in cost and simple in synthesis equipment and operation and is in line with various indicators of release agent standards for concrete products JC / T 949-2005; and the concrete release agent can be spray-coated or roll-brushed, and gas-pore and crack phenomena of the concrete products can be effectively reduced. The modified lignin is applied to the concrete release agent, and resources can be fully utilized.

Description

technical field [0001] The invention relates to a concrete release agent and a preparation method thereof. Background technique [0002] With the continuous development of national urbanization and infrastructure construction, the scale of construction projects has also reached new highs. Concrete is the most widely used building material, and its excellent construction performance and mechanical properties ensure the safety of pouring and use of concrete components. However, with the development of architectural design concepts and concrete technology, the requirements for the decorative effect of concrete surface are getting higher and higher. Reasonable use of release agent can effectively improve the appearance of concrete and improve the durability of concrete. [0003] With the continuous increase in the number of private cars, the amount of waste engine oil has also increased significantly. The main component of waste engine oil is mineral oil. Mineral oil is not ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/00B28B7/38C10N40/36
CPCB28B7/384B28B7/388C10M173/00C10M2209/12C10N2040/36
Inventor 刘滔苏胜培王浩哲黄子尧
Owner 上海知碳电力工程有限公司
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