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Special release agent for concrete and preparation method thereof

A release agent, concrete technology, applied in the direction of additives, manufacturing tools, petroleum industry, etc., can solve the problems of emulsifier or solvent, inconvenient storage, increase storage cost and transportation cost, etc., to achieve easy demoulding and convenient storage , the effect of wide storage temperature range

Active Publication Date: 2013-05-15
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Existing emulsion-type release agents are produced and directly sprayed (brushed) on the working surface of the mold, so that the emulsion-type release agent is added during production The amount of emulsifier or solvent is large, which virtually increases the storage cost and transportation cost, and generally can only be stored at a temperature of -5°C-50°C, and the storage time is 3-9 months. In places with cold climates inconvenient to store

Method used

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  • Special release agent for concrete and preparation method thereof
  • Special release agent for concrete and preparation method thereof
  • Special release agent for concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 40 parts of methyl silicone oil and 40 parts of white oil into the reaction kettle, mix and heat up to 40°C, then add 2 parts of sodium dodecylbenzenesulfonate, 2 parts of tributyl phosphate, 0.1 part of imidazoline, octadecyl 10 parts of acid, insulated and stirred for 30 minutes, then discharged, and cooled naturally.

[0036] The obtained product has a good demoulding effect after the JC / T945-2005 standard test, and the concrete adhesion after demoulding is 3.4g / m 2 .

Embodiment 2

[0038] Take 80 parts of white oil and add it to the reaction kettle, raise the temperature to 60°C, add 3 parts of sodium dodecylbenzenesulfonate, 201 parts of Tween, 1 part of tributyl phosphate, 0.04 parts of undecyl imidazoline, and 1 part of dodecyl acid , heat preservation and stirring for 30 minutes, discharge the material, and let it cool naturally.

[0039] The obtained product has good demoulding effect after JC / T945-2005 standard test, and the concrete adhesion after demoulding is 3.6g / m 2 .

Embodiment 3

[0041] Take 50 parts of ethyl silicone oil, 30 parts of dimethyl hydroxy silicone oil, and 10 parts of phenyl silicone oil, add them to the reaction kettle, mix and heat up to 50°C, 2 parts of sodium lauryl sulfate, 1 part of monoalkyl ether phosphate , 0.1 part of benzotriazole, 0.1 part of imidazoline, 0.1 part of ethanolamine, 2 parts of palmitic acid, and 3 parts of octadecanoic acid, keep stirring for 30 minutes, discharge the material, and let it cool naturally.

[0042] The obtained product has good demoulding effect after JC / T945-2005 standard test, and the concrete adhesion after demoulding is 3.6g / m 2 .

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Abstract

The invention relates to a special release agent for concrete, which comprises the following materials in parts by weight: 80-90 parts of mineral substance oil, 1-5 parts of an emulgator, 1-5 parts of a defoaming agent, 0.01-0.4 part of a corrosion inhibitor, and 1-10 parts of fatty acid. The invention also relates to a preparation method for the release agent. The special release agent for concrete adopts two substances, namely, a fatty acid active substance and the emulgator, the adhesive strength of the surface of the concrete is reduced when surface saponification is formed, so that demoulding is easier and the surface is smooth and has no defects. The product prepared by the method can be stored at temperature of wide range, is convenient to store and can be stored for a long time, has small relative density, can be diluted for use by adding 2-6 times of water, and lowers the transportation cost of the release agent.

Description

【Technical field】 [0001] The invention relates to an auxiliary agent for building materials, which belongs to the class of concrete admixtures, in particular to a special release agent for concrete and a preparation method thereof. 【Background technique】 [0002] The release agent for concrete is a kind of spray (brush) on the working surface of the mold, which plays an isolation role. It can separate the concrete from the mold smoothly when removing the formwork, and can make the concrete surface complete without air bubbles and make the mold smooth and clean. s material. With the rapid development of the economy, concrete structures are becoming more and more widespread. In addition to the ever-increasing demands on the performance of concrete, people are also paying more and more attention to the surface of concrete structures. The pores on the concrete surface not only affect the appearance of the structure surface, but also affect the strength and durability. [000...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M161/00C10M141/10C10M141/08C10M141/06C10M141/02B28B7/38C10N40/36
Inventor 刘加平孙帅李磊王洪松王文斌田倩
Owner JIANGSU SOBUTE NEW MATERIALS
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