Releasing agent special for bare concrete and preparation method thereof

A technology of fair-faced concrete and release agent, applied in the petroleum industry, lubricating compositions, etc., can solve problems such as harsh process conditions, unfavorable environmental protection requirements, and difficulty in improving the condition of hornet's nests on the concrete surface, achieving low adhesion and low cost , the effect of stable performance

Active Publication Date: 2015-10-28
JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, pure oil release agent (mineral oil, animal oil or vegetable oil, etc.) is used, but it can only make the concrete and the mold separate smoothly, and it is difficult to improve the condition of the hornet's nest on the concrete surface
Publication No. CN103409218 A discloses a concrete release agent and a preparation method thereof. Prepared in aqueous solution, this method requires saponification reaction at 95-105°C, the process conditions are harsh, and it contains formaldehyde, which is not conducive to environmental protection requirements

Method used

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  • Releasing agent special for bare concrete and preparation method thereof

Examples

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Effect test

example 1

[0017] First, dissolve 0.1g of non-ionic polyacrylamide (molecular weight: 2 million) in 119.8g of water, heat up to 50°C, stir well and add 750g of amodimethicone and 30g of coconut oil fatty acid diethanolamide , 0.1g diethanolamine, 100g polyoxypropylene glyceryl ether, after stirring for 60 minutes, cool naturally to obtain a special release agent for fair-faced concrete.

[0018] The viscosity of the obtained release agent is 79.8mPa.s, diluted with water 3 times, the release performance is tested by the JC / T945-2005 standard, and the concrete adhesion is 1.8g / m3 after continuous release for 3 times 2 , No rust to the steel mold, no change in performance after stable storage at -20°C to 45°C for 30 months.

example 2

[0020] First, dissolve 0.3g of non-ionic polyacrylamide (molecular weight: 8 million) in 178.7g of water, heat up to 55°C, stir well and add 655g of double polyethylene polydimethylsiloxane, 45g of coconut oil fatty acid diethanolamide , 1g N, N-dimethylethanolamine, 120g polyoxypropylene glyceryl ether, after stirring for 120 minutes, cool naturally to obtain a special release agent for fair-faced concrete.

[0021] The viscosity of the obtained release agent is 83.1mPa.s, which is diluted 5 times with water. The release performance is tested according to the JC / T945-2005 standard. After 4 consecutive releases, the concrete adhesion is 2.1g / m 2 , No rust to the steel mold, no change in performance after stable storage at -20°C to 45°C for 30 months.

example 3

[0023] First, dissolve 0.5g of non-ionic polyacrylamide (molecular weight: 12 million) in 177.5g of water, heat up to 35°C, stir well and add 620g of double polyethylene polydimethylsiloxane, 50g of coconut oil fatty acid diethanolamide , 2g ethylenediamine, 150g polyoxypropylene glyceryl ether, after stirring for 30 minutes, cool naturally to obtain a special mold release agent for fair-faced concrete.

[0024] The viscosity of the obtained release agent is 81.2mPa.s, diluted with water 7.5 times, the release performance is tested by the JC / T945-2005 standard, and the concrete adhesion amount is 2.0g / m after continuous release for 3 times 2 , No rust to the steel mold, no change in performance after stable storage at -20°C to 45°C for 30 months.

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Abstract

The invention relates to a releasing agent special for bare concrete and a preparation method thereof. The releasing agent special for the bare concrete is a water dispersion solution and comprises raw materials including organic modified silicone oil accounting for 62%-75% of the total mass of the raw materials, polyacrylamide accounting for 0.01%-0.05% of the total mass of the raw materials, fatty acid amide accounting for 3%-5% of the total mass of the raw materials, organic amine accounting for 0.01%-0.2% of the total mass of the raw materials, polyoxypropylene glycerol ether accounting for 10%-15% of the total mass of the raw materials and water accounting for 11%-18% of the total mass of the raw materials. The polyacrylamide is firstly solved in the water, the temperature is improved to be 35-55 DEG C, other components are added after even stirring, natural cooling is performed after re-stirring to obtain the releasing agent special for the bare concrete. The appearance effect of a bare concrete cement product can be improved, the surface of the bare concrete cement product can be smooth and free of air bubbles, the releasing agent special for the bare concrete is environmentally friendly, free of pollution and low in cost, 1-7.5 times of water can be added for dilution when the releasing agent is used, 3-4 times of continuous releasing can be performed through one-time spraying, and performance is stable.

Description

technical field [0001] The invention relates to the application field of concrete admixtures, in particular to a special release agent for fair-faced concrete and a preparation method thereof. Background technique [0002] Fair-faced concrete, also known as facing concrete or decorative concrete, is a building form with its own texture as a decorative surface. This form of architectural expression puts forward higher requirements for appearance quality, smooth surface, smooth lines and uniform color. From the perspective of saving resources and environmental protection, the fair-faced concrete structure is cast in one time, and does not require plastering and chiseling repairs, which can not only reduce the use and waste of building materials, but also reduce the harm of formaldehyde released from decorative materials to human health. . The prefabricated components of fair-faced concrete cement products are attracting more and more attention in the field of construction. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10N40/36
Inventor 仇影丁蓓郑春扬姜海东王毅石宇
Owner JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD
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