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Calixarene intercalated hydrotalcite film for in-situ growth on aluminum substrate and preparation method for film

A technology of in-situ growth and aluminum substrate, applied in coating, surface reaction electrolytic coating, anodic oxidation, etc. Convenient, not easy to fall off effect

Inactive Publication Date: 2014-09-10
ZIBO VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there is no report on the calixarene intercalated hydrotalcite film and its preparation method grown in situ on aluminum substrates

Method used

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  • Calixarene intercalated hydrotalcite film for in-situ growth on aluminum substrate and preparation method for film
  • Calixarene intercalated hydrotalcite film for in-situ growth on aluminum substrate and preparation method for film
  • Calixarene intercalated hydrotalcite film for in-situ growth on aluminum substrate and preparation method for film

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The method for the calixarene intercalated hydrotalcite film grown on the aluminum substrate in situ described in this embodiment comprises the following steps:

[0028] Step A: Cut the aluminum sheet into 20cm×15cm pieces, first clean the surface of the aluminum sheet with 0.1mol / L hydrochloric acid solution, ultrasonically clean it in deionized water for 2min (frequency 20KHZ), and then put in 0.1mol / L NaOH solution Soak in medium for 3 minutes, then rinse with deionized water. The cleaned aluminum sheet was used as the anode, the lead sheet was used as the cathode, and 1M H 2 SO 4The solution is used as electrolyte, and it is oxidized at constant pressure. The working voltage is 15V, and the oxidation area of ​​the aluminum sheet is 300cm 2 , the oxidation current is 1.5A, the electrolysis time is 2h, and the electrolysis temperature is 20°C, so that an anodized aluminum oxide layer is formed on the surface of metal aluminum. During the oxidation process, small b...

Embodiment 2

[0032] The method for the calixarene intercalated hydrotalcite film grown on the aluminum substrate in situ described in this embodiment comprises the following steps:

[0033] Step A: Cut the aluminum sheet into 20cm×15cm pieces, first clean the surface of the aluminum sheet with 1mol / L hydrochloric acid solution, ultrasonically clean it in deionized water for 10min (frequency 20KHZ), and then soak it in 1mol / L NaOH solution Treat for 1min, then rinse with deionized water. The cleaned aluminum sheet was used as the anode, the lead sheet was used as the cathode, and 1M H 2 SO 4 The solution is used as electrolyte, and it is oxidized at constant pressure. The working voltage is 25V, and the oxidation area of ​​the aluminum sheet is 300cm 2 , the oxidation current is 3A, the electrolysis time is 0.5h, and the electrolysis temperature is 25°C, so that an anodized aluminum oxide layer is formed on the surface of metal aluminum. During the oxidation process, small bubbles (H 2...

Embodiment 3

[0037] The method for the calixarene intercalated hydrotalcite film grown on the aluminum substrate in situ described in this embodiment comprises the following steps:

[0038] Step A: Cut the aluminum sheet into 20cm×15cm pieces, first clean the surface of the aluminum sheet with 0.5mol / L hydrochloric acid solution, ultrasonically clean it in deionized water for 6min (frequency 20KHZ), and then put in 0.5mol / L NaOH solution Soak in medium for 2 minutes, then rinse with deionized water. The cleaned aluminum sheet was used as the anode, the lead sheet was used as the cathode, and 1M H 2 SO 4 The solution is used as electrolyte, and it is oxidized at constant pressure. The working voltage is 20V, and the oxidation area of ​​the aluminum sheet is about 300cm 2 , the oxidation current is 2.2A, the electrolysis time is 1.3h, and the electrolysis temperature is 25°C, so that an anodized aluminum oxide layer is formed on the surface of metal aluminum. During the oxidation process...

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Abstract

The invention belongs to the technical field of organic-inorganic composite materials, and relates to a calixarene intercalated hydrotalcite film for in-situ growth on an aluminum substrate and a preparation method for the film. The film is the calixarene intercalated hydrotalcite film prepared by the steps as follows: firstly, generating a dense aluminum oxide layer as the aluminum substrate on a metallic aluminum base through an electrolytic oxidation method; and secondly, generating laminate plates on the substrate by an in-situ growth method, wherein the laminate plates are vertical to the aluminum substrate, the chemical formula of the calixarene intercalated hydrotalcite film is [(M<2+>)1-x(M<3+>)x(OH)2]x+(CMCS44-)x / 4.mH2O, x is not less than 0.25 and not more than 0.33, m is interlayer crystalline water molecular number of 3-6, M<2+> is divalent metal ion Ni<2+>, Zn<2+>, Co<2+> or Mg<2+>, M<3+> is trivalent metal ion Al<3+>, and CMCS is O(1), O(2), O(3), O(4)-tetracarboxymethyl calix[4]arene. According to the invention, calixarene with unique inclusion performance can be assembled into hydrotalcite interlayer so as to realize the immobilization of the calixarene and the functionalization of the hydrotalcite, and the prepared hydrotalcite intercalated hydrotalcite does not easily drop due to a stronger action force with the substrate.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic composite materials, and relates to a calixarene intercalated hydrotalcite film grown on an aluminum substrate in situ and a preparation method thereof. Background technique [0002] Hydrotalcite compounds include hydrotalcite (Hydrotalcite, HT) and hydrotalcite-like compounds (Hydrotalcite-Like Compounds, HTLCs), the main body of which is generally composed of two metal hydroxides, also known as layered double hydroxyl composite metal oxides ( Layered Double Hydroxides, LDHs). LDHs are compounds formed by the accumulation of interlayer anions and positively charged laminates. The chemical composition of LDHs can be ideally expressed as: [M 2+ 1-x m 3+ x (OH) 2 ] x+ (A n- ) x / n mH 2 O, where M 2+ and M 3+ are the divalent and trivalent metal cations, such as Mg, located on the host laminates, respectively 2+ 、Ni 2+ , Zn 2+ , Mn 2+ 、Cu 2+ 、Co 2+ , Pd 2+ , Fe 2+ Equal d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04C25D11/24
Inventor 刘晓磊
Owner ZIBO VOCATIONAL INST