Cement paste antiadhesion agent and its making method

A manufacturing method and technology of anti-sticking agent, applied in the chemical industry, can solve problems such as hindering the city appearance, road environment pollution, damage to concrete mixer trucks, etc., and achieve the effect of good anti-sticking effect, improving urban environment and feasible manufacturing method.

Inactive Publication Date: 2003-04-16
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is not cleaned in time, it will not only seriously pollute the concrete mixer truck, but also cause serious pollution to the road environment during driving, which will hinder the appearance of the city
For this reason, it is necessary to knock on the shovel frequently, but this method is very laborious and time-consuming, and it will also damage the concrete mixer truck.
At present, some domestic manufacturers sometimes use methods such as smearing butter or engine oil on the easily polluted parts of the concrete mixer truck, but the brownish yellow butter will absorb dust particles, and it is more likely to pollute the environment during driving.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: getting the polyvinyl alcohol that the weight percent is 2 is slowly joined in the disperser of the stirring device that fills the water that the weight percent is 91.3, stirs simultaneously, then gradually heats up, and is heated to stop heating when foam is produced, Continue heating after the foam disappears. After several times, the foam can be eliminated. When the temperature rises to 87°C, keep warm until the polyvinyl alcohol is completely dissolved. After cooling the prepared polyvinyl alcohol liquid to room temperature, add the weight dropwise while stirring. Ethanol (95%) with a percentage of 6.5, stirred for 30 minutes after dripping, and then added dropwise polyethylene glycol octyl phenyl ether with a weight percentage of 0.2 while stirring, and stirred for 30 minutes after the completion of the dripping. The cement slurry anti-sticking agent can be obtained.

Embodiment 2

[0027] Embodiment 2: get the polyvinyl alcohol that the weight percent is 3.5 and slowly join in the disperser with the stirring device that fills the water that the weight percent is 84.5, stir simultaneously, then gradually heat, be heated to stop when foam is produced Heating, after the foam disappears, continue to heat. After several times, the foam can be eliminated. When the temperature rises to 90 °C, keep warm until the polyvinyl alcohol is completely dissolved, and then the prepared polyvinyl alcohol liquid is cooled to room temperature and dripped while stirring. Add 11 percent by weight of ethanol (95%), and stir for 45 minutes after dropping, then, while stirring, dropwise add polyethylene glycol octyl phenyl ether with a percent by weight of 1, and stir for 30 minutes after dropping After that, the cement slurry anti-sticking agent can be prepared.

Embodiment 3

[0028] Embodiment 3: get the polyvinyl alcohol that the weight percent is 7.5 and slowly join in the disperser with the stirring device that fills the water that the weight percent is 73, stir simultaneously, then gradually heat, be heated to stop when foam is produced Heating, continue heating after the foam disappears, the foam can be eliminated after several times, and when the temperature rises to 95 ℃, keep warm until the polyvinyl alcohol is completely dissolved. After the prepared polyvinyl alcohol liquid was cooled to room temperature, ethanol (95%) with a weight percentage of 18 was added dropwise while stirring, and the mixture was stirred for 60 minutes after the drop was completed. Then, the polyethylene glycol octyl phenyl ether with a weight percentage of 1.5 was added dropwise while stirring, and after the dropping was completed, the slurry was uniformly stirred for 60 minutes, and then the cement slurry anti-sticking agent was prepared.

[0029] When the cement...

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PUM

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Abstract

An antisticking agent for cement paste is prepared from polyvinyl alcohol (2-7.5 wt.%), alcohol (6.5-18), polyethylene glycol octylphenylether (0.2-1.5) and water (73-91.3) through dissolving polyvinyl alcohol in water at 87-95 deg.c, stirring while sequentially dropping alcohol and polyethylene glycol octylphenylether, and stirring. Its advantages are simple preparing process and high effect on preventing the cement paste from being stuck on the surface of stirrer.

Description

Technical field: [0001] The invention belongs to the field of chemical industry, and relates to a cement slurry anti-sticking agent and a manufacturing method thereof. Background technique: [0002] With the development of the construction industry, the demand for commercial concrete, a building material specially used for large and medium-sized urban construction projects, has greatly increased. When producing and transporting concrete, the cement slurry will inevitably splash on the concrete mixer truck and bond into many Grout block and stick firmly. If it is not cleaned in time, it will not only seriously pollute the concrete mixer truck, but also seriously pollute the road environment and hinder the appearance of the city during the driving. For this reason, it is necessary to knock out the shovel frequently, but this method is very labor-intensive and time-consuming, and it will also damage the concrete mixer. At present, some domestic manufacturers sometimes use met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/00
CPCC04B40/0039C04B2103/408
Inventor 陈振耀
Owner SHANGHAI UNIV OF ENG SCI
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