A kind of recyclable coated aluminum alloy template and preparation method thereof

A technology of aluminum alloy formwork and aluminum alloy plate, which is applied in the on-site preparation of building components, chemical instruments and methods, formwork/template components, etc. The strength of the template decreases and the recycling of the aluminum template is affected, so as to achieve the effect of good room temperature mechanical properties, light weight and good strength

Active Publication Date: 2021-03-05
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

However, in actual use, long-term direct contact between the aluminum alloy formwork and concrete or repeated use of the aluminum alloy formwork will easily cause corrosion on the surface of the aluminum alloy formwork, and the surface quality and strength of the aluminum alloy formwork will decline. The alloy formwork is firmly bonded to the solidified concrete. During the demoulding process, the aluminum alloy formwork is easily deformed due to force, which will affect the recycling of the aluminum formwork. Therefore, in recent years, the aluminum formwork is often brushed with a release agent during actual use. , but if the residual concrete slurry on the surface of the aluminum formwork is not cleaned and the release agent is applied, it will cause defects such as pockmarks on the concrete surface during construction. If the release agent is not evenly applied or the thickness of the application is improper, it will cause concrete pollution and prevent isolation. If the layer is damaged, it needs to be repaired, which will cause redundant workload. If the method of coating the aluminum alloy formwork is used, it can avoid brushing the release agent, but there is still a weak bond between the film layer and the aluminum alloy formwork. After use, the film layer The phenomenon of shedding occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Preparation of a film-coated aluminum alloy formwork 1:

[0024] First prepare the sponge skeleton:

[0025] Add 20 parts by mass of aluminum nitrate, 5 parts by mass of barium nitrate, 5 parts by mass of calcium nitrate, and 50 parts by mass of carbon powder into 3 wt % 400 parts by mass of polyethylene glycol solution and stir to dissolve, adjust pH=7 to obtain a mixed solution, and mix the solution Place it in a constant temperature water bath at 100°C for heating, then place it in a nitrogen atmosphere, keep it at 1000°C for 2 hours, take it out, add deionized water to prepare a dispersion. Under neutral conditions, during the heat preservation process, a precursor formed by mixing calcium oxide, barium oxide, aluminum oxide, and carbon is formed, and some of the calcium ions, barium ions and polyethylene glycol form complexes. Immerse the sponge in the dispersion liquid, oscillate with 50kHz ultrasonic wave for 20 minutes, disperse the substance in the ...

Embodiment 2

[0032] Example 2: Preparation of the film-coated aluminum alloy formwork II:

[0033] First prepare the sponge skeleton:

[0034] Add 20 parts by mass of aluminum nitrate, 5 parts by mass of barium nitrate, 5 parts by mass of calcium nitrate, and 50 parts by mass of carbon powder into 3 wt % 400 parts by mass of polyethylene glycol solution and stir to dissolve, adjust pH=7 to obtain a mixed solution, and mix the solution Place it in a constant temperature water bath at 100°C for heating, then place it in a nitrogen atmosphere, keep it at 1000°C for 2 hours, take it out, add deionized water to prepare a dispersion. Immerse the sponge in the dispersion liquid, oscillate with 50kHz ultrasonic wave for 20 minutes, disperse the substance in the dispersion liquid evenly into the pores of the sponge, let it stand for 1 hour, take it out, let the whole reaction system stand for aging, and freeze it at -30°C Dry, remove water, and place in N 2 -0.5%H 2 The atmosphere is neutral, an...

Embodiment 3

[0039] Example 3: Preparation of film-coated aluminum alloy formwork three:

[0040] First prepare the sponge skeleton:

[0041] Add 20 parts by mass of aluminum nitrate, 5 parts by mass of barium nitrate, 5 parts by mass of calcium nitrate, and 50 parts by mass of carbon powder into 3 wt % 400 parts by mass of polyethylene glycol solution and stir to dissolve, adjust pH=7 to obtain a mixed solution, and mix the solution Place it in a constant temperature water bath at 100°C for heating, then place it in a nitrogen atmosphere, keep it at 1000°C for 2 hours, take it out, add deionized water to prepare a dispersion. Immerse the sponge in the dispersion liquid, oscillate with 50kHz ultrasonic wave for 20 minutes, disperse the substance in the dispersion liquid evenly into the pores of the sponge, let it stand for 1 hour, take it out, let the whole reaction system stand for aging, and freeze it at -30°C Dry, remove water, and place in N 2 -0.5%H 2 The atmosphere is neutral, and...

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PUM

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Abstract

The invention discloses a recyclable film-coated aluminum alloy formwork and a preparation method thereof, and relates to the technical field of construction. The film-covered aluminum alloy formwork uses an aluminum alloy plate as a base, a porous alloy as an intermediate layer, and a plastic film The layer is a three-layer structure of the surface layer, the thickness of the middle layer is 1-2mm, the thickness of the plastic film layer is 2-3mm, the porous alloy is formed by filling the sponge skeleton with nickel-copper alloy, and the sponge skeleton is Aluminum nitride framework. The prepared film-coated aluminum alloy formwork is green and environmentally friendly, has excellent corrosion resistance, can withstand the corrosion of cement, makes the cement easy to separate from the building aluminum alloy formwork, is conducive to the recycling of the building aluminum alloy formwork, and effectively saves costs.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a recyclable film-coated aluminum alloy formwork and a preparation method thereof. Background technique [0002] Aluminum formwork is a building formwork made of aluminum alloy, also known as aluminum alloy formwork. It refers to the design according to the modulus. The aluminum formwork is extruded by special equipment. , has a complete set of general accessories for supporting use, and can be combined and assembled into an overall formwork with complex dimensions of different sizes. It is a system formwork for assembly and industrial construction. The aluminum alloy formwork solves the defects of the traditional formwork in the past and greatly improves the construction efficiency. Aluminum alloy building formwork is suitable for wall formwork, horizontal floor slabs, columns, beams, climbing formwork, bridges and other formwork. It can be assembled into small, medium or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/20B32B9/00B32B9/04B32B15/14B32B27/02B32B27/32B32B27/12B32B27/30E04G9/02B22F7/04
Inventor 席仕刚唐华强
Owner 重庆新久融科技有限公司
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