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Environment-friendly concrete-dedicated aqueous demoulding agent and preparation method thereof

An environment-friendly concrete and mold release agent technology, applied in the field of building materials, can solve the problems of affecting the aesthetics of the concrete surface, being less affected by the engineering community, and easily contaminated with steel bars, etc., to improve the mold release effect, the process is simple, and the appearance is smooth. Effect

Active Publication Date: 2014-11-19
KZJ NEW MATERIALS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of release agent is good at demoulding, it takes a long time to dry after coating, and it is easy to contaminate the clothes of construction operators and contaminate steel bars. After the concrete is hardened and the formwork is removed, there are often oil spots on the surface of the structure. It affects the beauty of the concrete surface, and has a very adverse effect on the later decoration of the concrete surface, such as the bonding of decorative layers such as brushing, paint, and plastering, and is not very popular in the engineering field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) In parts by mass, 60 parts of oleic acid, 40 parts of isopropanol, 2 parts of hydroquinone and 3 parts of p-toluenesulfonic acid are added to the reactor, the reaction temperature is 90°C, and the reaction The time is 3 hours, after the reaction is completed, it is lowered to room temperature (25-35°C), and isopropyl oleate is generated, which is the film-forming substance;

[0027] 2) In terms of parts by mass, add 90 parts of the above-mentioned film-forming substance and 10 parts of an aqueous solution of 50% amino-terminated polyoxyethylene ether (molecular weight: 230) into the reactor, and add 1.5 parts at 35°C. One part of S (Span)-20 and 3 parts of amino polyether silicone surfactant (molecular weight is 4000), 1000r / min stirring 30min; Adding 5 parts of mass concentration is 1% OP (octylphenol poly Oxyethylene ether)-10 aqueous solution, and then stirred at 1000r / min for 30min to obtain a pre-emulsion;

[0028] 3) Perform high-speed emulsification of the ab...

Embodiment 2

[0030] 1) In parts by mass, add 75 parts of oleic acid, 25 parts of butanol, 2 parts of phenothiazine and 3 parts of concentrated sulfuric acid into the reaction kettle, the reaction temperature is 85°C, and the reaction time is 2.5h After the reaction is completed, it is lowered to room temperature (25-35° C.) to generate butyl oleate, which is a film-forming substance;

[0031] 2) In terms of parts by mass, add 85 parts of the above-mentioned film-forming substance and 15 parts of an aqueous solution of 50% amino-terminated polyoxyethylene ether (molecular weight: 400) into the reactor, and add 1 1 part of S-60 and 2 parts of amino polyether silicone surfactant (molecular weight: 6000), stirring at 1000r / min for 30min; adding 3 parts of OP-7 aqueous solution with a mass concentration of 1%, and stirring at 1000r / min 30min to obtain the pre-emulsion;

[0032] 3) The above-mentioned pre-emulsion is emulsified at a high speed in a 1500r / min high-speed emulsifier, and then, in ...

Embodiment 3

[0034] 1) In parts by mass, 80 parts of ricinoleic acid, 20 parts of 2-pentanol, 2 parts of diphenylamine and 3 parts of dodecylbenzenesulfonic acid are added to the reactor, and the reaction temperature is 80 °C, the reaction time is 3h, after the reaction is completed, it is lowered to room temperature (25-35 °C), and amyl ricinoleate is generated, which is a film-forming substance;

[0035]2) In terms of parts by mass, add 95 parts of the above-mentioned film-forming substance and 5 parts of an aqueous solution of amino-terminated polyoxyethylene ether (molecular weight: 230) with a mass fraction of 50% to the reactor, and add 3 1 part of S-80 and 2 parts of amino polyether silicone surfactant (molecular weight: 6000), stirring at 1000r / min for 30min; adding 7 parts of OP-4 aqueous solution with a mass concentration of 1%, and stirring at 1000r / min 30min to obtain the pre-emulsion;

[0036] 3) Perform high-speed emulsification of the above-mentioned pre-emulsion in a 1800r...

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Abstract

The invention discloses an environment-friendly concrete-dedicated aqueous demoulding agent and a preparation method thereof. The preparation method comprises the following steps: making aliphatic acid carry out reactions with C3-C5 alkyl alcohol to obtain alkyl aliphatic ester, then mixing the alkyl aliphatic ester with modified polyether, an emulsifier, and an isolating agent to carry out reactions, carrying out high-speed emulsification, adding a penetrating agent, an antirust agent, and a stabilizing agent at the same time, and finally evenly mixing so as to obtain the environment-friendly concrete-dedicated aqueous demoulding agent. The preparation method has a simple technology, the obtained environment-friendly concrete-dedicated aqueous demoulding agent has a very good demoulding ability, the concrete surface is smooth, flat, and flawless after the demoulding, little concrete is adhered on the mould, and the demoulding agent does not corrode the mould and has the advantages of environment-friendliness, economy, and harmlessness.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environment-friendly water-based release agent for concrete and a preparation method thereof. Background technique [0002] Concrete release agent, also known as concrete release agent or release lubricant, is a substance or material that is coated or sprayed on the inner surface of the formwork, which can produce a layer of isolation film, which can lubricate and isolate, and effectively reduce the The adhesion between the concrete and the formwork enables the concrete to be separated from the formwork smoothly when the formwork is removed, keeping the shape of the concrete intact and clean. As a supporting material for concrete construction, concrete release agent has almost the same history as concrete. As early as the 1920s, various countries used soapy water solution, waste diesel oil, waste engine oil, lime, talcum powder, etc. as release agents in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M173/00B28B7/38C10N40/36
Inventor 柯余良方云辉魏桂芳郑荣平林倩李格丽邱岳涛陈晓彬邹辰阳尹键丽
Owner KZJ NEW MATERIALS GROUP CO LTD
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