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Ultrasonic triggering auxiliary device and method for self-repairing microcapsule of cement-based material

A technology of self-healing microcapsules and cement-based materials, applied in microcapsule preparations, measuring devices, analytical materials, etc., can solve the problem that the application of ultrasonic microcapsules has not been reported yet, and achieves easy promotion, good adjustability, and application prospects. expansive effect

Active Publication Date: 2020-02-11
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the use of ultrasound to trigger microcapsules in cement-based materials has not been reported.

Method used

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  • Ultrasonic triggering auxiliary device and method for self-repairing microcapsule of cement-based material
  • Ultrasonic triggering auxiliary device and method for self-repairing microcapsule of cement-based material
  • Ultrasonic triggering auxiliary device and method for self-repairing microcapsule of cement-based material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An ultrasonic trigger auxiliary device for cement-based material self-repairing microcapsules, such as figure 1 , figure 2 Shown, including container, ultrasonic device, test piece fixing device and circulating water device;

[0026] The container is a hollow cubic structure, with a container cover 5 on the top, a container support 9 as a support base at the bottom, and a water inlet 3 and a water outlet on the lower and upper parts of the two opposite sides of the container. 2.

[0027] The size of the container is 250mm×250mm×200mm. The container material is engineering plastic, plexiglass or nylon.

[0028] The length and width of the container cover 5 are slightly larger than 250 mm, and a rubber ring 1 is installed inside to facilitate clamping with the container, ensuring the container is airtight, and preventing the water in the container from overflowing.

[0029] The ultrasonic device is an ultrasonic vibrator 7, which is 6 in number, glued together with the containe...

Embodiment 2

[0038] An ultrasonic trigger method for cement-based material self-healing microcapsules is specifically as follows:

[0039] Connect the hose connected to the cold water reservoir of the circulating water device to the water inlet 3, and connect the hose connected to the cold water reservoir to the water outlet 2. Turn on the circulating water device, and the water with constant water temperature from the lower water inlet 3 Enter, the water outlet from the high water outlet 2 is cooled back, and the container is filled with water by the pressure of the vacuum pump, and the water in and out takes away the excess heat in real time to ensure a constant temperature in the container; connect the positive pole of each ultrasonic vibrator in parallel with the positive pole, and the negative pole with The negative poles are connected in parallel, and then the positive outgoing line 12 is connected to the positive electrode of the ultrasonic generator, and the negative outgoing line 13 i...

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Abstract

The invention discloses an ultrasonic triggering auxiliary device and method for a self-repairing microcapsule of a cement-based material. The device comprises a container, an ultrasonic vibrator attached to the outer wall of the container, a test piece fixing device in the container and a circulating water device, wherein the test piece fixing device is connected with the bottom of the inner wallof the container and used for containing a microcapsule cement-based test piece; the circulating water device is connected to control the temperature in the container, so that the test piece is in aconstant-temperature water bath state; and the ultrasonic vibrator on the outer wall of the container is connected with an ultrasonic generator, and the frequency, power, duty ratio and time of ultrasonic waves are controlled by the generator. The auxiliary device is good in adjustability, various ultrasonic parameters can be changed, then the triggering effect and rule of the various ultrasonic parameters on the microcapsule in the cement-based test piece are explored, and the auxiliary device is small in size, convenient to operate, capable of being repeatedly used, easy to popularize and wide in application prospect.

Description

Technical field [0001] The invention belongs to the technical field of material performance test and inspection, and specifically relates to an auxiliary device and method for ultrasonic triggering of cement-based material self-repairing microcapsules. Background technique [0002] Trigger-type microcapsules are one of the cutting-edge technologies for the self-repair of concrete cracks, but the existing microcapsule triggering methods have disadvantages such as uncontrollable trigger timing and low release efficiency. Therefore, looking for an efficient and stable trigger method has good application prospects. [0003] Ultrasound has the advantages of good directionality, strong penetrating power, concentrated energy, can improve the reaction conditions, accelerate the reaction speed and increase the reaction yield. It has been widely used in the degradation and polymerization of polymers, organic synthesis and separation, etc. A lot of research, and ultrasonic is also widely use...

Claims

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Application Information

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IPC IPC(8): G01N33/38G01N33/00B01J13/02
CPCB01J13/025G01N33/00G01N33/383
Inventor 宋子健余培培李子铭许婉张英杰徐娜刘永琦蔡焕春
Owner HOHAI UNIV
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