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Preparation method of four-arm anti-permeability compacting agent

A technology of compacting agent and anti-seepage agent, which is applied in the field of preparation of four-arm anti-seepage compacting agent, can solve the problems of defoaming agent affecting concrete volume change, large cracks, concrete strength, etc., and achieves high practical economic value and wide sources , Improve the effect of anti-seepage ability

Active Publication Date: 2021-08-03
安徽润砼建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the patent uses a defoamer to affect the volume change of concrete hydration reaction, which is prone to large cracks and affects the strength of concrete

Method used

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  • Preparation method of four-arm anti-permeability compacting agent
  • Preparation method of four-arm anti-permeability compacting agent

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Experimental program
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Effect test

Embodiment 1

[0023] Among them, 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane was purchased from Jiangsu Xinnaxi Epoxy S-610.

[0024]Step S1, dissolving the silane coupling agent in the solvent, and mixing evenly to obtain a silane coupling agent solution, the mixing temperature is 28°C; the silane coupling agent is KH-550, and the silane coupling agent is mixed with organic The molar volume ratio of the solvent is 0.3mol / L; the solvent is dichloromethane; step S2, adding 1,3-bis(N,N-diglycidylaminomethyl)cyclohexane dropwise to step S1 In the obtained silane coupling agent solution, control the reaction temperature at 20°C for 2 hours, then control the reaction temperature at 40°C for 3 hours, and remove the solvent by rotary evaporation to obtain the four-arm anti-penetration agent. 1,3-bis(N , when N-diglycidylaminomethyl)cyclohexane is added dropwise in the silane coupling agent, the molar ratio of the functionalized monomer and the silane coupling agent is controlled to be 5:1; step ...

Embodiment 2

[0026] 2,2'-dimethyl-3,3',5,5'-triphenylmethane tetraisocyanate was purchased from Jiangsu Hengbang 7900 curing agent TPMMTIA type. Step S1, the mixing temperature is 25°C, dissolve the silane coupling agent in the solvent, and mix uniformly to obtain a silane coupling agent solution; the silane coupling agent is KH-792, and the silane coupling agent is mixed with organic The molar volume ratio of the solvent is 2mol / L; the solvent is xylene; step S2, adding 2,2'-dimethyl-3,3',5,5'-triphenylmethane tetraisocyanate dropwise Into the silane coupling agent solution obtained in step S1, control the reaction temperature at 20°C for 1 hour, and then control the reaction temperature at 30°C for 2 hours to obtain the four-arm anti-penetration agent. Add 7900 curing agent dropwise to the silane coupling agent When in the joint agent, control the molar ratio of the 7900 curing agent to the silane coupling agent to be 4:1; step S3, the temperature is 25°C, prepare the nano-silica aqueous...

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Abstract

The invention belongs to the technical field of building concrete admixtures, and particularly relates to a preparation method of a four-arm anti-permeability compacting agent. The prepared anti-permeability compacting agent is introduced in the concrete stirring process to improve the workability of concrete, improve the slump, increase the early strength of the concrete and increase the anti-permeability compactness of the concrete, the concrete strength can be increased at a low temperature, the freeze-thaw resistance of the concrete is also enhanced, in the concrete processing and using process, an anti-permeability compacting agent which takes a four-arm anti-permeability agent prepared from a silicon dioxide alkali liquor slow release and a silane coupling agent as a main raw material is adopted, capillary pores capable of filling the concrete are introduced, therefore, the hardening of the concrete is accelerated, and the anti-permeability compacting is achieved.

Description

technical field [0001] The invention belongs to the technical field of building concrete admixtures, and in particular relates to a preparation method of a four-arm anti-seepage compacting agent. Background technique [0002] Today, with the rapid economic development and the continuous expansion of cities, the problem of land shortage is in sight, so the utilization of underground space such as large-scale underground garages has become particularly important. Due to the effect of groundwater, concrete materials for underground construction need to solve the problem of concrete impermeability. It is an effective measure to improve the impermeability of concrete to add compacting agent in underground large area concrete engineering. The compacting agent is a special concrete compacting material containing cement active components and strengthening components. The compacting agent can effectively prevent the penetration of water molecules, improve the impermeability of conc...

Claims

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Application Information

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IPC IPC(8): C04B24/42C07F7/18
CPCC04B40/0039C04B24/42C07F7/1892C04B22/14C04B22/06
Inventor 余建军程从亮
Owner 安徽润砼建材科技有限公司
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