Environment-friendly release agent for fair-faced concrete and preparation method thereof
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A technology of fair-faced concrete and mold release agent, which is applied in the manufacture of tools, ceramic molding machines, and the petroleum industry. It can solve the problems of high price, non-environmental protection, and poor apparent quality of concrete, and achieve low cost, eliminate air bubbles, and smear and spread. good uniformity
Inactive Publication Date: 2020-07-10
SOUTHEAST UNIV +2
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[0006] Purpose of the invention: Aiming at the problems of the existing fair-faced concrete release agents that are not environmentally friendly, the apparent quality of the concrete after demolding is poor, and the price is high, the present invention provides an environmentally friendly release agent for fair-faced concrete, and provides a release agent for the Mold preparation method
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Embodiment 1
[0022] (1) First, mix 6.65g Span 40 and 140g palm oil evenly, stir at room temperature 20°C for 10 minutes, let it cool naturally, and set aside; mix 3.5g alkylphenol polyoxyethylene ether op-10, 7.35g Sodium dodecylbenzenesulfonate and 191.45g of water were evenly mixed, stirred at room temperature of 20°C for 10 minutes, allowed to cool naturally, and set aside.
[0023] (2) Mix the two liquids in step (1), heat to 40°C, then add 0.35g of xanthan gum and 0.7g of triethanolamine in turn, stir at 40°C for 50 minutes, and let it cool naturally to obtain Release agent.
Embodiment 2
[0025] (1) First, mix 24.6g of Span 40 and 157.5g of palm oil evenly, heat to 40°C and stir for 10 minutes, let it cool naturally, and set aside; mix 10.5g of alkylphenol polyoxyethylene ether op-10 with 156.35 g of water, mixed evenly, heated to 40°C and stirred for 10 minutes, cooled naturally, and set aside.
[0026] (2) Mix the two liquids in step (1), heat to 60°C, then add 0.35g of xanthan gum and 0.7g of triethanolamine in turn, stir at 60°C for 40 minutes, and let it cool naturally to obtain Release agent.
Embodiment 3
[0028] (1) First, mix 6.65g of Span 80 and 140g of palm oil evenly, heat to 40°C and stir for 10 minutes, let it cool naturally, and set aside; mix 3.5g of alkylphenol polyoxyethylene ether op-10, 7.35g Sodium dodecylbenzenesulfonate and 191.45g of water were evenly mixed, heated to 40°C and stirred for 10 minutes, cooled naturally, and set aside.
[0029] (2) Mix the two liquids in step (1), heat to 60°C, then add 0.35g of xanthan gum and 0.7g of triethanolamine in turn, stir at 60°C for 50 minutes, and let it cool naturally to obtain Release agent.
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Abstract
The invention discloses an environment-friendly release agent for fair-faced concrete and a preparation method thereof. The release agent is prepared from the following raw materials in percentage byweight: 35-45% of palm oil, 5-10% of an emulsifier, 0.2% of an antirust agent, 0.1% of a stabilizer, 0-8% of nano titanium dioxide and the balance of water. The preparation method of the release agentcomprises the following steps: 1) respectively mixing and uniformly stirring the emulsifier, the water and the palm oil to obtain two mixed solutions according to the emulsifying property of the emulsifier; and 2) uniformly mixing the two mixed solutions prepared in the step 1), sequentially adding an antirust agent, a stabilizer and nano titanium dioxide, stirring for 40-50 minutes at the temperature of 10-60 DEG C, and cooling to obtain the release agent. The release agent has the properties of low viscosity, good spreading uniformity, isolation lubrication and the like and can effectivelyeliminate bubbles on the surface of fair-faced concrete and stably and effectively ensure the appearance quality of the fair-faced concrete, and the fair-faced concrete after release has the advantages of good apparent quality, smooth appearance, small apparent pore size, small quantity, uniform color and small color difference.
Description
technical field [0001] The invention relates to a release agent and a preparation method thereof, in particular to an environment-friendly release agent for fair-faced concrete and a preparation method thereof, belonging to the technical field of fair-faced concrete. Background technique [0002] Fair-faced concrete is a concrete that directly uses the natural texture of concrete as a finishing effect. Fair-faced concrete is molded once, and the natural surface of the concrete is used directly as a finish, without any decoration procedures. Fair-faced concrete has gradually become a development trend. In order to achieve the effect of fair-faced concrete, it is necessary to improve the appearance quality of concrete, reduce the pore size and number of pores, and improve the color uniformity of the concrete surface. The apparent quality of concrete is closely related to the performance of the release agent, so it is necessary to develop a release agent that meets the requir...
Claims
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