Unlock instant, AI-driven research and patent intelligence for your innovation.

Hybrid self-repairing microcapsule as well as preparation method and application thereof

A technology of self-healing microcapsules and uniform mixing, applied in the field of microcapsules, can solve the problems of single repair method, lack of multiple repairs, lack of multiple repairs, etc., and achieve rapid repair, good microscopic appearance, and moderate particle size distribution Effect

Pending Publication Date: 2021-10-01
NANCHANG UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of microcapsule can release a large amount of core material when triggering the repair to achieve rapid repair of the cement matrix, but the repair method of this type of self-healing microcapsule is relatively single, lacking the effect of multiple repairs
[0004] At present, microcapsule self-healing technology is becoming more and more mature, and the application of ordinary self-healing microcapsules [a self-healing diisocyanate microcapsule for cement concrete cracks and its preparation method CN201810259372.4] in cement matrix has achieved certain results, but The self-healing method of the cement matrix is ​​relatively simple, and it does not have the ability to repair multiple times; with the continuous deepening of research and continuous innovation of technology, slow-release self-healing microcapsules [a slow-release microcapsule polymer acidic soil Conditioning agent and its preparation method CN202010896189.2] Introduce the traditional microcapsule self-repair field, so that the cement matrix can also realize the function of multiple repairs on the basis of ensuring the repair ability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hybrid self-repairing microcapsule as well as preparation method and application thereof
  • Hybrid self-repairing microcapsule as well as preparation method and application thereof
  • Hybrid self-repairing microcapsule as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] A preparation method of hybrid self-repairing microcapsules, the preparation method comprising the following steps:

[0038] (1) adopt solvent evaporation method, take epoxy resin as core material, ethyl cellulose as wall material, prepare slow-release self-healing microcapsule;

[0039] (2) adopt in-situ polymerization method, take epoxy resin as core material, urea-formaldehyde resin as wall material, prepare common type self-healing microcapsule;

[0040] (3) Mix the prepared slow-release self-healing microcapsules and ordinary self-healing microcapsules evenly to obtain a hybrid self-healing microcapsules.

[0041] A method for applying hybrid self-repairing microcapsules. The prepared hybrid self-repairing microcapsules are mixed into cement-based materials to realize rapid repair and multiple repairs of the cement matrix, which specifically includes the following steps:

[0042] S1. Mix the slow-release self-repairing microcapsules and ordinary self-repairing mic...

Embodiment 3

[0052] Mix 1.5g of slow-release self-healing microcapsules and 1.5g of ordinary self-healing microcapsules evenly, add 10g of water to make the two microcapsules disperse evenly, and prepare a suspension. Weigh 100g of cement, and mix the suspension with 10g of water into the cement. At the same time, 0.3 g of polycarboxylate water reducer with a water reducing rate of 20% to 40% and 1.5 g of DMP-30 curing agent were added. Use a cement slurry mixer to fully stir the microcapsules while ensuring the integrity of the microcapsules, so that the microcapsules and cement slurry are evenly mixed. The cement slurry mixed with hybrid self-healing microcapsules was poured and molded, and the hybrid self-healing microcapsule composition was prepared after standard curing for 7 days.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a hybrid self-repairing microcapsule as well as a preparation method and an application thereof, a solvent evaporation method is adopted, epoxy resin is taken as a core material, ethyl cellulose is taken as a wall material, and a slow-release self-repairing microcapsule with slow-release repairing capability is prepared; an in-situ polymerization method is adopted, epoxy resin is used as a core material, urea resin is used as a wall material, a common self-repairing microcapsule with the fracture repairing capacity is prepared, the two microcapsules are mixed according to a certain proportion, and the mixed self-repairing microcapsule is obtained. The hybrid self-repairing microcapsule is good in microstructure and moderate in particle size distribution, complementary advantages of the two microcapsules can be achieved when the hybrid self-repairing microcapsule is doped into a cement matrix, the hybrid self-repairing microcapsule is applied to building pouring, rapid repairing and repeated repairing of the cement matrix can be achieved, and the self-repairing capacity of a composition is improved.

Description

technical field [0001] The invention relates to the technical field of microcapsules, in particular to a hybrid self-repairing microcapsule and its preparation method and application. Background technique [0002] The microcapsule self-healing technology is to pre-mix the microcapsules containing the repairing agent into the cement matrix. When the matrix is ​​damaged, the capsule ruptures to release the repairing agent. When the repairing agent meets the catalyst of the matrix, a cross-linking and curing reaction occurs to repair the cracked surface. , to achieve self-repair of the damaged part, thereby eliminating hidden dangers inside the cement-based material and prolonging its service life. Microcapsule self-healing technology has broad application prospects in the field of materials due to its excellent performance. [0003] The release of microcapsule repair agent can be divided into slow release and burst release. Slow release refers to the slow release of active i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B24/38C04B28/02B01J13/14B01J13/20
CPCC04B40/0039C04B28/02B01J13/14B01J13/206C04B2201/50C04B7/00C04B24/121C04B2103/302C04B24/281C04B24/383C04B24/126C04B24/008C04B2103/0068C04B2103/0094
Inventor 王信刚尹皓张轩哲
Owner NANCHANG UNIV