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Self-repairing and self-lubricating difunctional microcapsule as well as preparation method and application thereof

A self-healing, dual-function technology, applied in the direction of microcapsule preparation, microsphere preparation, coating, etc., can solve environmental burden and other problems, and achieve excellent self-healing and self-lubricating properties

Pending Publication Date: 2022-05-20
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the use of various chemical reagents is involved in the microencapsulation process, which causes the production of microcapsules and composite materials based on microcapsules to cause a burden on the environment, so there is an urgent need for environmentally friendly microcapsules and composite materials based on microcapsules. its preparation method

Method used

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  • Self-repairing and self-lubricating difunctional microcapsule as well as preparation method and application thereof
  • Self-repairing and self-lubricating difunctional microcapsule as well as preparation method and application thereof
  • Self-repairing and self-lubricating difunctional microcapsule as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0073] 1 g of hollow glass microspheres with an outer diameter of 20 μm and an inner diameter of 18 μm (see figure 2 Figure (a)) and 40mL (0.1mol / L) sodium hydroxide aqueous solution were added to the reaction kettle, and the temperature was raised to 250°C in a closed state. After maintaining this temperature for 2 hours, the reaction kettle was naturally cooled to room temperature, filtered, and removed. Porous hollow glass microspheres were obtained after washing with ion water and drying.

[0074] Disperse 1g of porous hollow glass microspheres into 10g of linseed oil as a self-healing agent, ultrasonically disperse for 20min with an ultrasonic power of 180W, put it in a vacuum oven at a temperature of 50°C and a vacuum of 0.06MPa for 30min, and then in air Place it for 12h, filter and wash off the linseed oil on the outer surface of the glass beads with ethyl acetate solvent to obtain self-healing agent@glass beads microcapsules (see figure 2 Figure (b)).

[0075] Mel...

preparation example 2

[0077] The method is basically the same as that of Preparation Example 1, except that isocyanate is used instead of linseed oil as the self-healing agent.

preparation example 3

[0079] The method is basically the same as that of Preparation Example 1, except that epoxy resin is used instead of linseed oil as the self-healing agent.

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Abstract

The invention relates to a novel self-repairing and self-lubricating difunctional microcapsule as well as a preparation method and application thereof. Specifically, the invention provides a method for preparing a difunctional microcapsule, which comprises the following steps: impregnating hollow porous microspheres with a self-repairing agent to obtain a self-repairing agent impregnated microsphere capsule; uniformly mixing a self-lubricating agent in a molten state with the self-repairing agent impregnated microbead capsule to obtain a difunctional mixture; spraying the difunctional mixture on a collecting plate, and then collecting the cooled difunctional mixture from the collecting plate to obtain the difunctional microcapsule. The invention also provides the microcapsule prepared by the method, a method for preparing the self-repairing and self-lubricating difunctional composite material by using the microcapsule and the self-repairing and self-lubricating difunctional composite material prepared by the method. The preparation method has the advantages of being green and environmentally friendly, and the microcapsule with excellent self-repairing and self-lubricating functions or a composite material based on the microcapsule can be prepared.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a novel self-repairing and self-lubricating dual-function microcapsule and its preparation method and application. Background technique [0002] Microcapsules are micron particles with a core-shell structure, and their core (core material) and shell (wall material) can be designed according to different application requirements. In recent years, microcapsules have been widely used in the field of self-healing and self-lubricating materials. Among them, the application of microcapsules in the field of self-healing is mainly to prepare self-healing polymer matrix composites, self-healing anti-corrosion coatings and self-healing concrete. [0003] In the preparation process of microcapsules, the repair agent is used as the core material, and then the organic or inorganic material or organic / inorganic hybrid material is used as the wall material. The main function of the wall ...

Claims

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Application Information

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IPC IPC(8): B01J13/02C08K9/10C08K7/28C08L91/00C08L91/06C08L63/00C08K5/29C09D163/00C09D7/62C09D7/65C09D7/63C09D5/08
CPCB01J13/02C08K9/10C08K7/28C08L91/00C08L91/06C08L63/00C08K5/29C09D163/00C09D7/62C09D7/70C09D7/65C09D7/63C09D5/08Y02E60/14
Inventor 李海燕李志科汪怀远李卡卡李鑫冯莹莹李新凯臧庆伟
Owner NORTHEAST GASOLINEEUM UNIV
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