A kind of self-healing material and its preparation method and application

A technology of self-repairing material and composite powder, which is applied in the field of concrete materials, can solve the problems that self-repairing materials cannot achieve crack repairing effect, and achieve high practical value and promotion value, good repairing effect and fast repairing speed

Active Publication Date: 2022-03-29
刘汉东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the self-healing material in the prior art cannot achieve the ideal crack repair effect, the present invention provides a self-healing material and its preparation method and application

Method used

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  • A kind of self-healing material and its preparation method and application
  • A kind of self-healing material and its preparation method and application
  • A kind of self-healing material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0040] An embodiment of the present invention provides a microcrack repairing agent for cement-based materials for construction. The raw materials include the following components in parts by mass:

[0041] 15 parts of pumice powder, 55 parts of expansion component, 5 parts of lithium carbonate, 15 parts of potassium carbonate, 10 parts of PVB.

[0042] The preparation method of the above-mentioned cement-based material microcrack repairing agent for construction comprises the following steps:

[0043] Step 1. Weigh each component according to the designed ratio, and mix the weighed reinforcement component and expansion component uniformly to obtain composite powder;

[0044] Step 2. Stir the composite powder and pumice powder for 3 hours under the condition of 700r / min to obtain a primary coating repair powder;

[0045] Step 3: adding the weighed polyvinyl butyral into ethanol, heating to 60°C for 30 minutes to obtain a slow-release solution;

[0046] Step 4. Stir the primary...

Embodiment 2

[0048] An embodiment of the present invention provides a microcrack repairing agent for cement-based materials for construction. The raw materials include the following components in parts by mass:

[0049] 10 parts of pumice powder, 40 parts of expansion component, 6 parts of lithium carbonate, 24 parts of potassium bicarbonate, 20 parts of PVB.

[0050] The preparation method of the above-mentioned cement-based material microcrack repairing agent for construction comprises the following steps:

[0051] Step 1. Weigh each component according to the designed ratio, and mix the weighed reinforcement component and expansion component uniformly to obtain composite powder;

[0052] Step 2. Stir the composite powder and pumice powder for 2 hours under the condition of 900 r / min to obtain a primary coating repair powder;

[0053] Step 3: Add the weighed polyvinyl butyral into ethanol, heat to 65°C for 30 minutes to obtain a slow-release solution;

[0054] Step 4. Stir the primary ...

Embodiment 3

[0056] An embodiment of the present invention provides a microcrack repairing agent for cement-based materials for construction. The raw materials include the following components in parts by mass:

[0057] 10 parts of pumice powder, 50 parts of expansion component, 20 parts of potassium carbonate, 10 parts of potassium bicarbonate, 10 parts of PVB.

[0058] The preparation method of the above-mentioned cement-based material microcrack repairing agent for construction comprises the following steps:

[0059] Step 1. Weigh each component according to the designed ratio, and mix the weighed reinforcement component and expansion component uniformly to obtain composite powder;

[0060] Step 2. Stir the composite powder and pumice powder for 2 hours under the condition of 800r / min to obtain a primary coating repair powder;

[0061] Step 3: Add the weighed polyvinyl butyral into ethanol, heat to 62°C for 30 minutes to obtain a slow-release solution;

[0062] Step 4. Stir the primar...

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Abstract

The invention relates to the technical field of concrete materials, and specifically discloses a self-healing material and a preparation method and application thereof. The self-healing material includes a reinforcing component and an expansion component of the inner layer, and a double-layer coating layer of the outer layer. The first layer of the double-layer coating layer is a mineral adsorption component layer, and the second layer is a layer of a mineral adsorption component. A slow-release component layer coated on the outside of the mineral adsorption component layer; wherein, the reinforcing component is carbonate or bicarbonate; the swelling component is calcium salt or calcium oxide; the The material of the mineral adsorption component layer is pumice powder; the material of the slow-release component layer is polyvinyl butyral. The self-healing material provided by the invention can quickly fill and repair micro-cracks or micro-damages of cement-based materials such as mortar, mortar, concrete and the like caused by various factors, has good reinforcement effect, and has good repeated repairability.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to a self-repairing material and its preparation method and application. Background technique [0002] After more than a century of development, concrete has developed from the simple cement concrete composed of sand, stone and cement to high-performance concrete mixed with the fifth component, the sixth component and other components. However, due to the inherent brittleness of concrete, problems such as low tension-compression ratio and poor crack resistance are still difficult research points in the field of concrete engineering. If the microscopic cracks formed in the early stage of concrete are not repaired in time, under the action of external load, the microcracks (or micro-damages) will continue to expand and expand into macrocracks, thereby reducing the mechanical properties of the building, deteriorating its overall performance, and reducing the quality of the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/12C04B22/14C04B28/00C04B22/06C04B22/10
CPCC04B20/12C04B40/0039C04B28/00C04B2201/50C04B20/1066C04B22/064C04B22/143C04B22/142C04B22/10C04B20/1033C04B22/106C04B14/02C04B14/06
Inventor 刘汉东李志明底杰赵晓栋张磊许光李丽莎康屾陈红远
Owner 刘汉东
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