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Porous alumina/titanium dioxide-based polylactic acid-modified composite fabric with nano-pillar array structure and preparation method thereof

A nano-pillar array, porous alumina technology, applied in the field of textile materials, can solve rare problems and achieve the effects of good film formation, improved adhesion, and improved mechanical properties

Active Publication Date: 2018-08-17
SHENZHEN ELLASSAY FASHION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above-mentioned prior art that the product that can be prepared by combining alumina and titania through chemical and physical means has high catalytic activity. more common

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) After cleaning the surface of the aluminum sheet, place it in an electrolyte solution of ethanol and perchloric acid, and perform electrochemical polishing at 4° C. for 2 min at a voltage of 15 v to obtain a pretreated aluminum sheet. The pretreated aluminum sheet is used as the anode, the titanium plate is used as the cathode, and 0.5moL / L phosphoric acid solution is used as the electrolyte. At 35V and 4°C, an anodic oxidation is performed once for 3 hours, and the acidic solution and oxidation on the surface of the aluminum sheet are cleaned and removed. The aluminum oxide film obtained by the primary oxidation treatment is placed in the 0.3moL / L chromic acid solution as the electrolyte again, and the secondary anodic oxidation is carried out at 35V and 4°C for 50min. The acidic solution and the oxide film on the surface of the aluminum sheet are cleaned and removed to obtain a porous anodic aluminum oxide film with a pore size of 100 nm.

[0025] (2) According to...

Embodiment 2

[0028](1) After the surface of the aluminum sheet is cleaned, it is placed in an electrolyte solution of ethanol and perchloric acid, and electrochemically polished at 4° C. for 4 minutes at a voltage of 20 v to obtain a pretreated aluminum sheet. The pretreated aluminum sheet is used as the anode, the titanium plate is used as the cathode, and the 0.8moL / L phosphoric acid solution is used as the electrolyte, at 40V and 4°C, perform an anodic oxidation for 4 hours to clean and remove the acidic solution and oxidation on the surface of the aluminum sheet. The aluminum oxide film obtained by the primary oxidation treatment is placed in the 0.5moL / L chromic acid solution as the electrolyte again, and the secondary anodic oxidation is carried out at 40V for 90min at 4°C. The acidic solution and the oxide film on the surface of the aluminum sheet are cleaned and removed to obtain a porous anodic aluminum oxide film with a pore size of 300 nm.

[0029] (2) According to the mass rati...

Embodiment 3

[0032] (1) After the surface of the aluminum sheet is cleaned, it is placed in an electrolyte solution of ethanol and perchloric acid, and electrochemically polished at 4° C. for 3 minutes at a voltage of 18 v to obtain a pretreated aluminum sheet. The pretreated aluminum sheet is used as the anode, the titanium sheet is used as the cathode, and 0.6moL / L phosphoric acid solution is used as the electrolyte, at 38V and 4°C, an anodic oxidation is performed once for 3.5h, and the acidic solution and Oxide film, obtain the aluminum oxide film of the primary oxidation treatment, place the aluminum oxide film of the primary oxidation treatment again in the electrolyte with 0.4moL / L chromic acid solution, and perform secondary anodic oxidation at 39V and 4°C for 60min , cleaning and removing the acidic solution and oxide film on the surface of the aluminum sheet to obtain a porous anodic aluminum oxide film with a pore size of 200 nm.

[0033] (2) According to the mass ratio of nano-...

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Abstract

The invention provides a porous alumina / titanium dioxide-based polylactic acid-modified composite fabric with a nano-pillar array structure and a preparation method thereof. The specific preparation method is as follows: a pretreated aluminum sheet as an anode undergoes anode oxidation twice with a titanium plate as a cathode and phosphoric acid solution and chromic acid solution as electrolytes,the acid solution and oxide film of the surface of the aluminum sheet are cleaned off, and thereby a porous anodal alumina film is obtained; nano-titanium dioxide sol is added into tetrahydrofuran, L-lactic acid and stannous octoate catalyst are respectively added, and after heating for reaction, the solution and polylactic acid solution are uniformly mixed, so that titanium dioxide-modified polylactic acid solution is obtained; the porous anodal alumina film is immersed into the titanium dioxide-modified polylactic acid solution and oscillated under microwaves, the solution is applied on thesurface of a textile, and after a film is formed by curing under room temperature, the microimprinting technique is utilized to form a nano-pillar array on the surface of the film, so that the porousalumina / titanium dioxide-based polylactic acid-modified composite fabric with a nano-pillar array structure is prepared.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a porous alumina / titania-based polylactic acid-modified composite fabric with a nano-column array structure and a preparation method thereof. Background technique [0002] Porous anodized aluminum is obtained by anodizing aluminum foil in an acidic solution. The aluminum foil is used as the anode, the titanium sheet or carbon sheet is used as the cathode, and sulfuric acid, oxalic acid, boric acid, borate, phosphoric acid or chromic acid is used as the electrolyte. The solubility of the aluminum oxide film to the porous type and the barrier type are prepared. The porous type aluminum oxide film is because the electrolyte has a dissolution effect on the aluminum oxide film. When the aluminum oxide film is formed, part of the aluminum oxide film begins to dissolve. Due to the dissolution rate and the speed of new alumina film production, porous alumina with di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/04C09D7/62C09D7/61C08G63/06C08G63/85C25D11/08C25D11/12D06N3/12D06N3/00
CPCC08G63/06C08G63/85C08K2003/2241C09D7/62C09D7/70C09D167/04C25D11/08C25D11/12D06N3/00D06N3/12D06N2209/04D06N2209/08D06N2209/103C08K9/08C08K9/00C08K7/24C08K3/22
Inventor 陈东进
Owner SHENZHEN ELLASSAY FASHION CO LTD
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