Device and method for preparing film-coated self-healing material

A film-coated device and composite material technology, which is applied in the field of devices for preparing film-coated self-healing materials, can solve the problems of complex operation methods, expensive, limited self-healing materials, etc., and achieve the effect of increasing the adsorption capacity

Pending Publication Date: 2021-06-04
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing self-healing methods based on ceramsite as the carrier of self-healing materials still have certain deficiencies.
First of all, although ceramsite, as a lightweight aggregate, has better adsorption capacity than other aggregates, the existing self-repairing materials preserved by natural immersion adsorption are still limited.
Secondly, the ceramsite that absorbs the self-healing material still has the property of slowly releasing the adsorbed substances. The existing technology covers the ceramsite to better retain the self-healing material until the cracks open; the current coating device, such as Chinese patent CN 110227793 discloses a film-coating device, which needs to put raw sand and various film-coated materials in a sand mixer for mixing and heating, etc., requiring expensive devices and complicated operation methods

Method used

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  • Device and method for preparing film-coated self-healing material
  • Device and method for preparing film-coated self-healing material
  • Device and method for preparing film-coated self-healing material

Examples

Experimental program
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Effect test

preparation example Construction

[0046] The device for preparing a film-coated self-healing material provided by the invention includes a detachable adsorption device and a film-coating device.

[0047] In the present invention, the suction device includes a vacuum component and a suction component.

[0048] Such as figure 1 As shown, in the present invention, the adsorption assembly includes a vacuum suction head 1 , a top cover 2 , a hollow connecting device 3 and a circular groove 6 arranged in sequence from top to bottom.

[0049] In the present invention, the adsorption assembly includes a vacuum head 1 . In the present invention, there is no special limitation on the type and source of the vacuum pumping head, which can be adjusted according to usage requirements.

[0050] In the present invention, the upper end of the vacuum suction head is connected to the vacuum assembly through a hose, and the air in the adsorption assembly can be drawn out along the hose during vacuuming.

[0051] In the present i...

Embodiment 1

[0095] A device for preparing a film-coated self-healing material, including a detachable adsorption device and a film-coating device; the adsorption device includes a vacuum component and an adsorption component;

[0096] The device for preparing the film-coated self-healing material provided by the present invention includes two use states during use, that is, preparing the self-healing material and covering the film.

[0097] In the preparation of self-healing materials, such as figure 1 As shown, the adsorption assembly includes a vacuum suction head 1, a top cover 2, a hollow connection device 3, a gauze 4, a rotating thread 5 and a circular groove 6 arranged sequentially from top to bottom; the vacuum suction head 1 The upper end of the upper end is connected with the vacuum assembly through the hose 7; the bottom of the hollow connecting device 3 is provided with a mesh 4; the hollow connecting device is connected with the circular groove through a rotating thread 5;

...

Embodiment 2

[0101] The device of Example 1 was used to prepare a self-healing material. The specific process is as follows:

[0102] (1) Weigh the ceramsite in a blast drying oven and dry it at 60°C for 24h.

[0103] (2) Pour 200 g of the dried ceramsite obtained in step (1) into the circular groove 6, add 60 mL of a sodium carbonate solution with a mass concentration of 10%, and connect the circular groove 6 and the hollow connection device 3 by rotating threads , so that the mesh is located below the liquid surface of the self-healing material solution.

[0104] (3) Apply vaseline on the contact surface of the vacuum pumping head 1, the top cover with a convex groove 2 and the hollow connection device 3 for sealing, connect the pumping hose 7, turn on the vacuum pump 8 and start pumping until the value of the barometer 9 reaches -0.1MPa. Vacuum adsorption for 40 minutes; after the adsorption is completed, filter the ceramsite that has absorbed the sodium carbonate solution through th...

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Abstract

The invention relates to the technical field of preparation of self-healing materials and film coating, and provides a device for preparing a film-coated self-healing material. The device for preparing the film-coated self-healing material comprises a detachable adsorption device and a film coating device, The device for preparing the film-coated self-healing material not only can be used for preparing the self-healing material, but also can be used for coating the prepared self-healing material. The device is simple and easy to obtain, and the investment of equipment funds for preparing the self-healing material and coating the self-healing material can be greatly reduced. Experimental results show that when the device provided by the invention is used for preparing the self-healing material, the adsorption capacity can reach 90% or above of the maximum adsorption capacity of the carrier. The film coating device provided by the invention for the self-healing material can obtain a film layer of 78.5 microns after the self-healing material is coated with a film, and ions in a self-healing material solution can be effectively prevented from being diffused.

Description

technical field [0001] The invention relates to the technical field of preparation of self-healing materials and film covering, in particular to a device and method for preparing film-covered self-healing materials. Background technique [0002] Concrete is one of the most widely used construction materials in the world today. However, the tensile strength of concrete is limited, and cracks are prone to appear during use. Once the concrete starts to produce micro-cracks and expand to macro-cracks, it will affect the beauty of the building and reduce the bearing capacity of the concrete structure. Moreover, cracks provide access to the interior of the concrete to accelerate the invasion of aggressive substances such as chloride ions, sulfate ions, and carbon dioxide, which accelerates the carbonation of concrete and corrosion of steel bars, and further leads to excessive expansion, reducing structural durability, The service life of concrete is greatly shortened. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/32B01D15/16B01D15/20B01J2/00B01J3/00
CPCB01D15/163B01D15/20B01J2/006B01J3/006B01J20/3204B01J20/3225B01J20/3234B01J20/3287B01J20/3293
Inventor 王险峰杜冠宏陈少聪朱继华邢锋
Owner SHENZHEN UNIV
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