Allophane-membrane composite, sheet using the same, and method for producing allophane-membrane composite

A kind of allophane, composite technology, applied in the direction of pressure inorganic powder coating, layered products, etc., can solve the problems of excess volume, field restrictions, etc., to achieve the effect of no reduction in adsorption capacity and fast adsorption speed

Active Publication Date: 2021-12-17
NAT INST OF ADVANCED IND SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, extra volume is required in each usable space, and the field that can be used is limited

Method used

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  • Allophane-membrane composite, sheet using the same, and method for producing allophane-membrane composite
  • Allophane-membrane composite, sheet using the same, and method for producing allophane-membrane composite
  • Allophane-membrane composite, sheet using the same, and method for producing allophane-membrane composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] As Example 1, allophane raw material particles 17 were sprayed onto a nonwoven fabric (a nonwoven fabric whose surface was coated with a polyethylene film) substrate, and an allophane film was formed by the AD method. The sized allophane powder was aerosolized with a nitrogen gas flow rate of 2.5 L / min, and passed through a nozzle with an opening width of 30 mm × 0.2 mm to a non-woven fabric (made of polyethylene) placed in a chamber of a vacuum atmosphere of 20 Pa. The film-coated nonwoven fabric) substrate was sprayed to form an allophane film, and a allophane film-nonwoven composite was produced. The substrate is reciprocally displaced relative to the nozzle at a speed of 4mm / s, the film forming time is 500 seconds, and the film forming area is 30×100mm 2 .

[0068] The weight of the allophane film-nonwoven fabric composite was measured, and the weight of the allophane film was calculated from the difference from the weight of the nonwoven fabric before film formati...

Embodiment 2

[0082] An allophane film-nonwoven fabric composite was produced in the same manner as in Example 1, except that the spraying time of the aerosol to the substrate was about 100 seconds.

[0083] The weight of the allophane film was calculated in the same manner as in Example 1, and it was 0.16 g. The thickness of the allophane film was measured in the same manner as in Example 1, and was about 38 μm. The surface hardness of the allophane film was evaluated in the same manner as in Example 1, and as a result, the allophane film had a surface hardness of H or higher. The adhesion of the allophane film was evaluated in the same manner as in Example 1. As a result, the allophane film did not peel off when it was bent once at 90°. The adhesion of the allophane film to the base material was evaluated with a cellophane tape in the same manner as in Example 1. As a result, it was found that the adhesion of the allophane film was 4.0 N / 10 mm or more. The hygroscopic properties of the ...

Embodiment 3

[0085] A film-forming material was produced in the same manner as in Example 1, except that the spraying time of the aerosol to the substrate was about 1250 seconds.

[0086] The weight of the allophane film was calculated in the same manner as in Example 1, and it was 0.21 g. The thickness of the allophane film was measured in the same manner as in Example 1, and it was about 50 μm. The surface hardness of the allophane film was evaluated in the same manner as in Example 1, and as a result, the allophane film had a surface hardness of H or higher. The adhesion of the allophane film was evaluated in the same manner as in Example 1. As a result, the allophane film did not peel off when it was bent once at 90°. The adhesion of the allophane film to the base material was evaluated with a cellophane tape in the same manner as in Example 1. As a result, it was found that the adhesion of the allophane film was 4.0 N / 10 mm or more. The hygroscopic properties of the allophane film-n...

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Abstract

The object is to provide an allophane film composite in which a film of allophane monomer is formed on a substrate such as an aluminum substrate or a non-woven fabric, and to improve its adhesion strength and peel strength. In addition, a method for manufacturing the allophane-membrane composite is provided. Also provided is a sheet using an allophane-membrane composite in which a film of allophane monomer is formed on a substrate such as an aluminum substrate or a nonwoven fabric. An allophane film composite according to an embodiment of the present invention includes a base material and a allophane film having an average diameter of 3.5 nm to 10 nm deposited on the base material, the base material and the water The adhesion of the allophane film is 4 N / 10 mm or more, and the number of times the allophane film is peeled from the substrate is more than one time after repeated 90-degree bending tests.

Description

technical field [0001] The invention relates to an allophane-film composite body in which a clay mineral allophane film formed by an aerosol deposition method has adhesion to a base material. Background technique [0002] Allophane is a low-crystalline aluminosilicate and an amorphous aluminosilicate, and is present in large quantities in soils derived from volcanic ejecta such as pumice and volcanic ash. Allophane is composed of silicon (Si), aluminum (Al), oxygen (O), and hydrogen (H) (hydroxyl (OH)). Its shape is a hollow sphere with a diameter of 3.5nm to 5nm, with a specific surface area (~900m 2 / g), with a layer of gibbsite (gibbsite) octahedral sheet as the spherical wall and combined with SiO on its inner side 4 The tetrahedral structure has a large number of through holes of 0.3nm to 0.5nm on the spherical wall. Due to this characteristic structure, allophane has a large surface area and has hydroxyl groups on the surface, and thus is capable of adsorbing water,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/16B32B5/24B32B9/00C23C24/04
CPCB32B5/16B32B5/24B32B9/00C23C24/04
Inventor 松本泰治铃木宗饭塚一智佐伯和彦明渡纯
Owner NAT INST OF ADVANCED IND SCI & TECH
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