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Water awakening type self-healing microbial capsule and waterproof material prepared from same

A waterproof material and microorganism technology, applied in the direction of microorganism-based methods, microorganisms, biochemical equipment and methods, etc., can solve problems such as repair difficulties, economic losses, and impact on structural safety, and achieve an effect that is conducive to proliferation

Active Publication Date: 2022-04-15
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also problems such as flexural resistance, low tensile strength, and easy cracks, which directly affect structural safety issues, bring economic losses to the country and the people, and even pose a threat to people's lives in severe cases.
[0003] When cracks appear in concrete as a waterproof material, its impermeability is reduced and it is difficult to repair
At present, the restoration of waterproof materials mainly includes cement-based osmotic crystallization, external coating of waterproof paint, and the addition of fast-setting early-strength inorganic composite restoration agents. Cracking occurs again due to other reasons. At present, the cracking of the repairing material can only be repaired manually, which is time-consuming and laborious, the repairing effect is not good, and the long-term effectiveness cannot be guaranteed. Therefore, it is necessary to develop a waterproof material that can achieve self-healing function

Method used

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  • Water awakening type self-healing microbial capsule and waterproof material prepared from same
  • Water awakening type self-healing microbial capsule and waterproof material prepared from same
  • Water awakening type self-healing microbial capsule and waterproof material prepared from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of microbe self-healing microbial capsule that wakes up with water, the preparation process comprises the following steps:

[0033] 1) Cultivation of Pallidum: inoculate 15g of Pallidum on 3g of medium (1g of beef extract, 2g of peptone), and add 20g of nutrients (0.5g of beef extract, 1.5g of peptone, 18g of water), 5g of calcium acetate and urea 20g, and then cultured in a cell incubator (cultivation temperature is 35°C, cultured for 24h) to obtain a culture;

[0034] 2) Preparation of microbial capsules: Put 15g of the mixture of aluminate and gypsum (7.5g of aluminate, 7.5g of gypsum), culture (prepared in step 1)) into the stirring pot and stir for 4min, then manually stir for 2min, Stir the machine for 2 minutes to mix evenly, then dissolve 3g of epoxy resin (EP) with 90g of water as the capsule wall material, and then put the mixed material into the round pot for rotation and stirring at a speed of 30r / min. Spray the epoxy resin solution on the material d...

Embodiment 2

[0039] A kind of microbe self-healing microbial capsule that wakes up with water, the preparation process comprises the following steps:

[0040] 1) Cultivation of Pallidum bacillus: Inoculate 30 g of Pallidum bacillus on 5 g of medium (2 g of beef extract, 3 g of peptone), and add 25 g of nutrients (0.8 g of beef extract, 1.2 g of peptone, 23 g of water), 5 g of calcium lactate and urea 15g, and then cultured in a cell culture incubator (cultivation temperature: 35°C, cultured for 24 hours) to obtain a culture;

[0041]2) Preparation of microbial capsules: according to the mixture of aluminate and gypsum 30g (aluminate 10g, gypsum 20g); culture (prepared in step 1)) put it in a stirring pot and stir for 3 minutes, then manually stir for 3 minutes, and then machine Stir for 3 minutes to mix evenly, then dissolve 5g of polyvinyl alcohol (PVA) with 90g of water to form the capsule wall material, then put the mixed material into a round pot for rotation and stirring at a speed of...

Embodiment 3

[0046] A kind of microbe self-healing microbial capsule that wakes up with water, the preparation process comprises the following steps:

[0047] 1) Cultivation of Pallidum bacillus: Inoculate 50g of Pallidum bacillus on 10g of medium (4g of beef extract, 6g of peptone), and add 35g of nutrients (1g of beef extract, 3g of peptone, 31g of water), 9g of calcium acetate and 21g of urea, Then place it in a cell incubator for culture (cultivation temperature is 35°C, culture 24h) to obtain the culture;

[0048] 2) Preparation of microbial capsules: Put 20g of the mixture of aluminate and gypsum (5g of aluminate, 15g of gypsum) and the culture (prepared in step 1) into the stirring pot for 8min, then manually stir for 1min, then machine Stir for 1 min to mix evenly, then dissolve 6 g of polyethylene glycol (PEG) in 100 g of water to form the capsule wall material, then put the mixed material into a round pot for rotation and stirring at a speed of 50 r / min, and during the rotation p...

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Abstract

The invention belongs to the technical field of waterproof materials, particularly relates to a water-awakening type self-healing microbial capsule, and further relates to a waterproof material prepared from the microbial capsule. The microbial capsule is prepared from the following raw materials: ochrobactrum, a culture medium, nutrient substances, a calcium source, urea, a mixture of aluminate and gypsum, and swelling resin. The waterproof material provided by the invention can realize secondary repair, and can be directly awakened when meeting water, when a concrete member cracks, water flows into a crack, and the aluminate and the gypsum finish the first repair. And when the expanded crystal repaired for the first time cracks, water is in contact with the ochrobactrum anthropi along with the cracks, the ochrobactrum anthropi has a mineralization deposition effect, and the cracks are filled with mineralization deposition products again, so that the second time of repairing is completed. The microbial capsule and the waterproof material provided by the invention have the advantages of low cost of adopted materials, easily available raw materials, simple product production process and remarkable social and economic effects.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials, in particular to a self-healing microbial capsule awakened by water, and to a waterproof material made of the microbial capsule. Background technique [0002] Among civil engineering materials, concrete is widely used because of its high strength, high workability, and high durability, and has become the most widely used and most used structural material in the world. However, there are also problems such as flexural resistance, low tensile strength, and easy cracks, which directly affect structural safety issues, bring economic losses to the country and the people, and even threaten people's lives in severe cases. [0003] When cracks appear in concrete as a waterproof material, its impermeability is reduced and repairing is difficult. At present, the restoration of waterproof materials mainly includes cement-based osmotic crystallization, external coating of waterproof paint, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B24/26C04B24/28C04B28/04C12N1/20C12N11/084C12N11/089C12R1/01C04B111/27C04B111/72
Inventor 罗忠涛殷昆鹏罗浩刘晓海张美香田崇霏张梦张硕
Owner ZHENGZHOU UNIV
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