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Preparation method of additive particles for high-performance concrete release agent

A high-performance concrete and release agent technology, applied in the direction of additives, manufacturing tools, petroleum industry, etc., can solve the problems of easy generation of large dust and poor release effect, and achieve the effect of avoiding dust, weakening affinity and enhancing binding performance

Inactive Publication Date: 2020-05-08
陈启明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the current water-quality release agent has poor release effect and easily produces a large amount of dust, the present invention provides a preparation method of adding particles for high-performance concrete release agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the mixed granule is to perform ball milling on bentonite, talcum powder and surfactant according to the mass ratio of 4-8:3-5:1, and collect the ball-milled product to obtain the mixed granule.

[0025] The surfactant is any one of fatty alcohol polyoxyethylene ether and alkylphenol polyoxyethylene ether.

[0026] The auxiliary agent is made by mixing ammonium bicarbonate and anthracite at a mass ratio of 8:13-16.

[0027] The additive in step B is formed by mixing propylene oxide and ethylene oxide in a mass ratio of 6:2-4.

[0028] In step B, the catalyst is any one of potassium hydroxide and dibutyltin dilaurate.

[0029] The preparation method of modified liquid is:

[0030] A. Mix ethylenediamine and methanol evenly in a volume ratio of 3:10-13, then add methyl acrylate with a volume of 4-6 times the volume of ethylenediamine and acrylic acid solution with a volume 1-3 times the volume of ethylenediamine. React for 26-30 hours, distill...

Embodiment 1

[0041] The preparation method of the mixed granule is to perform ball milling on bentonite, talcum powder and surfactant according to the mass ratio of 4:3:1, and collect the ball milled product to obtain the mixed granule.

[0042] The surfactant is fatty alcohol polyoxyethylene ether.

[0043] The auxiliary agent is made by mixing ammonium bicarbonate and anthracite at a mass ratio of 8:13.

[0044] The additive in step B is formed by mixing propylene oxide and ethylene oxide in a mass ratio of 6:2.

[0045] Catalyst is potassium hydroxide in step B.

[0046] The preparation method of modified liquid is:

[0047]A. Mix ethylenediamine and methanol evenly at a volume ratio of 3:10, then add methyl acrylate with 4 volumes of ethylenediamine and acrylic acid solution with 1 volume of ethylenediamine, react at 20°C for 26 hours, and evaporate the excess under reduced pressure Methyl acrylate, collect the remaining liquid;

[0048] B. In terms of parts by weight, take 80 part...

Embodiment 2

[0058] The preparation method of the mixed granules is as follows: ball milling bentonite, talcum powder and surfactant according to the mass ratio of 6:4:1, and collecting the ball-milled products to obtain the mixed granules.

[0059] The surfactant is alkylphenol polyoxyethylene ether.

[0060] The auxiliary agent is made by mixing ammonium bicarbonate and anthracite at a mass ratio of 8:14.

[0061] The additive in step B is formed by mixing propylene oxide and ethylene oxide in a mass ratio of 6:3.

[0062] The catalyst in step B is dibutyltin dilaurate.

[0063] The preparation method of modified liquid is:

[0064] A. Mix ethylenediamine and methanol evenly at a volume ratio of 3:12, then add methyl acrylate with a volume of 5 times the volume of ethylenediamine and acrylic acid solution twice the volume of ethylenediamine, react at 25°C for 28 hours, and evaporate the excess under reduced pressure Methyl acrylate, collect the remaining liquid;

[0065] B. In terms ...

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Abstract

The invention discloses a preparation method of additive particles for a high-performance concrete release agent, and belongs to the technical field of concrete. The preparation method comprises the following steps: mixed particles are taken as a raw material for calcining to form porous particles, the porous particles are mixed and modified with a modifying solution, the modifying solution is a mixed solution containing dendritic polyether synthesized by taking ethylenediamine as an initiator, the hydrophilic performance of the porous particles is reduced, and the fusion with a release agentis improved, the porous particles are mixed with a mixture and a synergist, the combination performance of the particles and a base material is enhanced, and the stability performance of emulsion is increased; the added synergist can effectively combine with active ions existing in a mold release agent to weaken the affinity between the particles and the base material; and the polymer can well react with some minerals or ions to generate substances with isolation effect, and dust generation is effectively avoided. The preparation method solves the problems of poor demoulding effect and easy generation of a large amount of dust of the prior water-based mold release agent.

Description

technical field [0001] The invention relates to a method for preparing additive particles for a high-performance concrete release agent, which belongs to the technical field of concrete. Background technique [0002] Concrete release agent, also known as concrete release agent or release lubricant, is a kind of coating or spraying on the inner surface of the formwork, which can produce an isolation film, which can lubricate and isolate, and can effectively reduce the concrete and formwork. The adhesion force between them can make the concrete can be separated from the formwork smoothly when the formwork is removed, and the substance or material that keeps the shape of the concrete intact and clean. In the construction of concrete engineering, quality defects such as honeycomb pockmarks, missing corners, and exposed ribs often appear on the concrete surface. The use of release agent can reduce or even avoid many of the above-mentioned problems on the surface of concrete comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M167/00C10M177/00B28B7/38C10N40/36C10N30/12C10N30/06
CPCB28B7/384C10M161/00C10M167/00C10M177/00C10M2201/062C10M2201/102C10M2201/103C10M2203/10C10M2209/102C10M2209/103C10M2219/044C10M2227/083
Inventor 陈启明
Owner 陈启明
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