Concrete product isolation mold releasing agent and preparation method thereof

A technology for concrete products and mold release agents, which is applied in the petroleum industry, nanotechnology, nanotechnology for materials and surface science, etc. The effect of overcoming environmental pollution problems, repairing micro-pits and damage

Active Publication Date: 2019-04-05
HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used release agents include waxes, silicone oils, soaps, waste engine oil, etc., each with its own characteristics; and the commonly used release agents for concrete products are mainly waste engine oil release agents, which have serio

Method used

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  • Concrete product isolation mold releasing agent and preparation method thereof
  • Concrete product isolation mold releasing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 20 parts of silicone oil with an average viscosity of 1000cp, 20 parts of silicone oil with an average viscosity of 500cp, 8 parts of emulsifier Tween-60, 8 parts of Span-60, weigh 16 parts of deionized water, and weigh 2 parts of stearin Acid, 8 parts of ethanol, and 5 parts of anhydrous calcium chloride were prepared with deionized water to make a calcium chloride aqueous solution with a concentration of 0.5M, added to a reaction vessel with a stirring reflux device, and stirred at 45°C to form a transparent solution. According to the molar ratio of calcium ions to carbonate ions of 1:1, slowly add anhydrous sodium carbonate powder into the silicone oil-calcium chloride solution prepared above under stirring, and stir while adding. Foaming agent, heat up the system to 45-55°C, stir and reflux for 36 hours, add deionized water, stop heating, stir slowly, cool down and invert the phase, and obtain a silicone oil nano-calcium carbonate emulsion concrete with a solid...

Embodiment 2

[0025] Weigh 30 parts of silicone oil with an average viscosity of 1000cp, 1.5 parts of Tween-60, 1.5 parts of Span-60, 0.5 part of Tween-20, 0.5 part of Span-20 of emulsifier, and 8 parts of deionized water, weigh Take 0.8 parts of ethanol, 0.2 parts of polyvinyl alcohol, 0.3 parts of anhydrous calcium chloride and deionized water to make a calcium chloride aqueous solution with a concentration of 2.5M, add it into a reactor with a stirring reflux device, and stir at 50°C to form a transparent solution. Stir to form a clear solution. According to the molar ratio of calcium ions to carbonate ions of 1:1, slowly add anhydrous sodium carbonate powder or 0.5M aqueous sodium carbonate solution into the silicone oil-calcium chloride solution prepared above under stirring, and stir while adding, After the addition is complete, add 0.5 parts of defoamer, raise the temperature of the system to 55-65 ° C, stir and reflux for 24.0 hours, add deionized water, stop heating, stir slowly, c...

Embodiment 3

[0027] Weigh 35 parts of silicone oil with an average viscosity of 500cp, 7 parts of Tween 80, 7 parts of Span-80, 0.5 part of Tween-20, 0.5 part of Span-20, 15 parts of deionized water, and weigh 3 parts of ethanol, 2 parts of stearic acid, 0.5 part of sodium stearate, 3 parts of anhydrous calcium chloride are made into the calcium chloride aqueous solution that concentration is 2M with deionized water, add in the reactor with stirring reflux device, 50 °C to form a transparent solution. According to the molar ratio of calcium ions to carbonate ions of 1:1, slowly add anhydrous sodium carbonate powder or 2.5M aqueous sodium carbonate solution into the silicone oil-calcium chloride solution prepared above under stirring, and stir while adding, After the addition is complete, add 0.8 parts of defoamer, raise the temperature of the system to 65-75°C, stir and reflux for 20.0 hours, add deionized water, stop heating, stir slowly, cool down and invert the phase, and obtain a solid...

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Abstract

The invention discloses a preparation method of a concrete product isolation mold releasing agent, and belongs to the field of concrete additives. The preparation method includes the steps: firstly, taking film-forming substances, emulsifying agents, water-soluble salt calcium chloride and sodium carbonate as raw materials to prepare W/O-type activated nano-calcium carbonate silicone oil compositeemulsion; adding water to perform phase inversion to obtain the W/O-type activated nano-calcium carbonate silicone oil composite emulsion. The emulsion is applicable to isolation among the raw materials and molds in the machining process of concrete products, the surfaces of the molds can be easily cleaned, nano-calcium carbonate components are added, micro-gaps and damage of the surfaces of themolds can be repaired, the service lives of the molds are prolonged, and the surface of a product is bright and clean, defects are decreased, and finished product ratio is increased.

Description

technical field [0001] The invention relates to an isolation release agent for concrete products and a preparation method thereof, belonging to the field of concrete additives. Background technique [0002] As an important auxiliary agent in the molding process of concrete products, the release agent can improve the appearance and performance of the product and improve the quality of the product. Commonly used release agents include waxes, silicone oils, soaps, waste engine oil, etc., each with its own characteristics; and the commonly used release agents for concrete products are mainly waste engine oil release agents, which have serious environmental pollution and are not suitable for molds. Cleaning, the surface of the product is prone to micro-pits caused by air bubbles, so it is urgent to develop a concrete product isolation release agent that overcomes the above defects. [0003] Therefore, research and development of a high-solid content nano-calcium carbonate modifi...

Claims

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Application Information

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IPC IPC(8): C10M169/04B82Y40/00B82Y30/00C10N40/36C10N30/04
CPCB82Y30/00B82Y40/00C10M169/04C10M2201/062C10M2229/04C10N2010/04C10N2020/06C10N2030/04C10N2040/36
Inventor 褚艳红庄玉伟郭辉赵俊杰邢会华曹艳霞张国宝刘清曹键
Owner HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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