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A kind of easy demoulding aluminum alloy formwork and preparation method thereof

An aluminum alloy formwork and easy demoulding technology, which is used in the field preparation of formwork/formwork components, building components, surface reaction electrolytic coating, etc. Concrete and other problems, to achieve the effect of improving the demoulding quality, easy demoulding, and many cycles of use

Active Publication Date: 2020-09-25
重庆新久融科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the promotion and application of aluminum alloy formwork, the problem of concrete release quality has gradually become the focus of attention. The existing aluminum alloy formwork often needs to be pre-coated with a layer of release agent in the process of use, while the market On the one hand, the common release agents in the world cannot be well attached to the aluminum alloy formwork, which causes them to fall off easily during use and cannot be recycled; on the other hand, the existing release agents are poor in hydrophobicity, It is very easy to adhere to the concrete during the process, resulting in damage to the concrete surface

Method used

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  • A kind of easy demoulding aluminum alloy formwork and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of modified shell powder: After washing the shells with deionized water, soak them in 0.1mol / L sodium hydroxide solution for 30 minutes, then place them in 0.1mol / L nitric acid solution, and place them in a water bath at 60°C After heating and refluxing for 5 hours, take it out, wash it with deionized water until neutral, dry and grind to obtain pretreated shell powder, then add the pretreated shell powder to an ethanol solution with a mass ratio of 5 times, and use 800r / Min mechanically stirred at a speed of 5 min, and added dropwise polymethyl methacrylate with a mass ratio of 2 times that of shell powder at a rate of 2-3 drops / min. After the addition was completed, continue to stir and mix for 70 minutes. Ultrasound for 10 minutes under the condition, filter and dry to obtain the modified shell powder.

[0034]Preparation of silica particles: Dissolve 10g of tetraethyl silicate in ethanol solution, stir for 30min at a speed of 50r / min, add 0.1mol / L potas...

Embodiment 2

[0041] The preparation of modified shell powder is the same as in Example 1.

[0042] Preparation of silica particles: Dissolve 10g of tetraethyl silicate in ethanol solution, stir for 20min at a speed of 80r / min, add 0.1mol / L potassium hydroxide solution to adjust the pH to 6.0, then add 1g of polyamide Imine particles were ultrasonically dispersed for 30 minutes under the conditions of 20KHz and 120W, and then the reaction solution was placed in an autoclave at 220°C for 24 hours of heat preservation and reaction. After the reaction was completed, it was filtered and washed 2 to 3 times with deionized water to obtain a solid After the product was dried, it was placed in a calciner, and calcined at 550°C for 4 hours. It was found that the silicon dioxide particles had a porous rosette-like hierarchical structure after scanning with a SEM scanning electron microscope.

[0043] Preparation of modified silica: Take 10g of dodecyltriethoxysilane and add it to 2% ethanol solution ...

Embodiment 3

[0049] The preparation of modified shell powder is the same as in Example 1.

[0050] Preparation of silica particles: Dissolve 10g of tetraethyl silicate in ethanol solution, stir for 25min at a speed of 100r / min, add 0.1mol / L potassium hydroxide solution to adjust the pH to 6.0, and then add 1g polyamide Imine particles were ultrasonically dispersed for 30 minutes under the conditions of 20KHz and 120W, and then the reaction solution was placed in an autoclave at 220°C for 24 hours of heat preservation and reaction. After the reaction was completed, it was filtered and washed 2 to 3 times with deionized water to obtain a solid After the product was dried, it was placed in a calciner and calcined at 600°C for 6 hours. Scanning by SEM scanning electron microscope revealed that the silicon dioxide particles had a porous rosette-like hierarchical structure.

[0051] Preparation of modified silica: Take 10g of dodecyltriethoxysilane and add it to 2% ethanol solution for hydrolysi...

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Abstract

The invention relates to the technical field of aluminum alloy templates, in particular to an easily-demoulded aluminum alloy template and a preparing method thereof. The aluminum alloy template comprises an aluminum alloy base body and a demoulding layer attached to the surface of the aluminum alloy base body. Raw materials for preparing the demoulding layer include, by weight, 1-5 parts of polyvinyl alcohol, 4-6 parts of stearic acid, 3-5 parts of octadecanamide, 4-8 parts of konjac glucomannan, 15-20 parts of konjaku flour, 15-20 parts of sodium alga acid, 1-3 parts of sodium borate, 5-7 parts of modified shell powder, 5-10 parts of modified silicon dioxide, 2-4 parts of aluminum sulfate, 2-6 parts of sodium methyl silicate, 1-3 parts of sodium dodecyl sulfate and 0.3-0.7 part of organic silicon defoamer. The demoulding layer is directly formed on the surface of the aluminum alloy base body, demoulding is easier, the cyclic usage frequency is larger, the concrete demoulding qualityis improved to a certain degree, and the demoulding efficiency of the aluminum alloy template is improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy formwork, in particular to an aluminum alloy formwork with easy release and a preparation method thereof. Background technique [0002] Building formwork is an essential building construction material and an important tool, which plays an important role in the construction process of cast-in-place concrete. Aluminum alloy formwork has been widely used in building construction in developed countries abroad, and was introduced into China at the beginning of the 21st century. As a new type of building formwork, aluminum alloy formwork has the advantages of light weight, easy assembly and disassembly, high bearing capacity, not easy to rust, and many turnover times, which is incomparable to traditional formwork such as wood formwork, combined steel formwork and all-steel large formwork. advantages and convenience. After more than ten years of development, aluminum alloy formwork has been wide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/06E04G9/06
CPCC08K2003/265C08K2003/387C08L2205/035C09D7/61C09D7/62C09D105/02C09D105/04C25D11/026C25D11/06E04G9/06C08L5/02C08L29/04C08K13/06C08K9/06C08K3/36C08K9/02C08K3/26C08K3/38C08L5/04
Inventor 席仕刚唐华强
Owner 重庆新久融科技有限公司
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