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Controllable magnetic force release microcapsule, preparation method, release control method and application thereof

A microcapsule and magnetic technology, applied in the directions of microcapsule preparation, microsphere preparation, building components, etc., can solve the problems of limited pavement crack repair ability and limited utilization of capsules, and achieve good pavement repair effect and good application and promotion prospects. , the effect of improving utilization

Pending Publication Date: 2021-10-08
THE UNIV OF NOTTINGHAM NINGBO CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is worth noting that the microcapsules can be activated only when the location of the microcracks is consistent with that of the microcapsules, but the distribution of the microcapsules and the location of the microcracks are random, which leads to limited utilization of the capsules and the repair of pavement cracks. limited capacity

Method used

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  • Controllable magnetic force release microcapsule, preparation method, release control method and application thereof
  • Controllable magnetic force release microcapsule, preparation method, release control method and application thereof
  • Controllable magnetic force release microcapsule, preparation method, release control method and application thereof

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preparation example Construction

[0035] Another embodiment of the present invention discloses the preparation method of the above-mentioned controllable magnetic release microcapsules, combining figure 1 As shown, it includes the following steps:

[0036] S1: Add the asphalt repair agent into the water and stir to obtain liquid A.

[0037] S2: Weigh sodium alginate and mix with magnetic powder to obtain solid mixture B, add solid mixture B to liquid A, stir and mix to obtain liquid C.

[0038] S3: adding the liquid C dropwise into the calcium chloride solution, stirring and reacting to prepare microcapsules.

[0039] S4: Sieve, wash and dry the microcapsules prepared in step S3.

[0040] The preparation method of the controllable magnetic force release microcapsule is simple, the raw materials are controlled to ensure that there is an appropriate amount of magnetic powder in the microcapsule, and the specific material addition sequence makes the particle size distribution of the prepared microcapsule unifor...

Embodiment 1

[0049] Prepare the following materials: 100ml of sunflower oil, 500ml of water, 0.2g of NdFeB powder, 0.8g of sodium alginate, and 1.2g of calcium chloride dissolved in 60ml of water to prepare a 2%wt calcium chloride solution.

[0050] S1: Add sunflower oil to water, stir to mix, the stirring speed is 300r / min, and the stirring time is 1min, to obtain liquid A.

[0051] S2: Add the solid mixture B of sodium alginate and NdFeB powder into liquid A, stir and mix at a stirring speed of 300r / min for 10min to obtain liquid C.

[0052] S3: The calcium chloride solution is placed on an electromagnetic stirrer, liquid B is dropped into the calcium chloride solution by titration using a constant pressure separating funnel, and stirred for 1 hour to prepare microcapsules.

[0053] S4: Sieve the microcapsules, rinse with deionized water to ensure that the residual substances on the surface are cleaned, put them in an oven, dry at 80°C for 2 hours, take them out, and obtain controllable ...

Embodiment 2

[0055] Prepare the following materials: 100ml sunflower oil, 500ml water, 0.4g NdFeB powder, 0.8g sodium alginate, 1.2g calcium chloride dissolved in 60ml water to prepare a 2%wt calcium chloride solution.

[0056] S1: Add sunflower oil to water, stir to mix, the stirring speed is 300r / min, and the stirring time is 1min, to obtain liquid A.

[0057] S2: Add the solid mixture B of sodium alginate and NdFeB powder into liquid A, stir and mix at a stirring speed of 300r / min for 10min to obtain liquid C.

[0058] S3: The calcium chloride solution is placed on an electromagnetic stirrer, liquid B is dropped into the calcium chloride solution by titration using a constant pressure separating funnel, and stirred for 1 hour to prepare microcapsules.

[0059] S4: Sieve the microcapsules, rinse with deionized water to ensure that the residual substances on the surface are cleaned, put them in an oven, dry at 80°C for 2 hours, take them out, and obtain controllable magnetic release micro...

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Abstract

The invention provides a controllable magnetic force release microcapsule, a preparation method, a release control method and application thereof. The controllable magnetic force release microcapsule comprises a capsule wall and a capsule core, wherein the capsule wall wraps the capsule core, the material of the capsule wall is calcium alginate, the material of the capsule core is an asphalt repairing agent, and magnetic powder is distributed in the materials of the capsule wall and the capsule core. According to the invention, the magnetic powder is added into the microcapsule, the capsule wall can be broken by applying a magnetic field according to the road surface condition, and on-demand repairing is achieved, so that the utilization rate of the microcapsule and the road repairing capacity are improved.

Description

technical field [0001] The invention relates to the technical field of road repair materials, in particular to a controllable magnetic release microcapsule, a preparation method, a release control method and an application thereof. Background technique [0002] Asphalt materials are widely used in road paving. Asphalt roads are prone to micro-cracks under repeated vehicle loads and temperature changes. As the service time increases, micro-cracks gradually develop and connect with each other, and then form large-scale cracks, which affect the use of roads. life. Especially for cracks on the surface of asphalt roads, the accumulated water generated during rainfall will further aggravate their development. Cracks that are not repaired in time are easy to develop into grooves or potholes, which greatly affect the safety and comfort of road driving. [0003] Post-maintenance of asphalt roads is costly in terms of manpower and material resources. In recent years, preventive maint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L5/04C08K3/38C08K3/22C08K3/16C08L95/00B01J13/02
CPCC08L91/00C08L91/005C08L95/00B01J13/02C08K2003/162C08K2003/2275C08L2205/025C08L5/04C08K3/38C08K3/16C08K3/22
Inventor 王娟黄睿刘姝冯明威尚明一
Owner THE UNIV OF NOTTINGHAM NINGBO CHINA
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