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Self-repairing, breathable and wear-resisting composite coating and preparation method and application thereof

A composite coating, wear-resistant technology, applied in coatings, protein coatings, polyester coatings, etc., to achieve significant popularization and application value, excellent room temperature self-repairing function, and low production cost.

Inactive Publication Date: 2022-02-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a composite coating with self-repairing, breathable and wear-resistant properties and its preparation method and application, so as to solve the problem of introducing rigid structures into water-based coatings in the prior art. Aggregation is easy to occur, and it is difficult to effectively exert its enhancement effect

Method used

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  • Self-repairing, breathable and wear-resisting composite coating and preparation method and application thereof
  • Self-repairing, breathable and wear-resisting composite coating and preparation method and application thereof
  • Self-repairing, breathable and wear-resisting composite coating and preparation method and application thereof

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preparation example Construction

[0032] The invention provides a method for preparing a composite coating with self-repairing, breathable and wear-resistant properties, which specifically includes the following steps:

[0033] Step 1. Prepare hyperbranched polyphenylboronic acid-grafted mesoporous silica nanoparticles (HPB-MSN); wherein, the preparation process is as follows:

[0034] Step 11. In terms of parts by mass, take 0.1-10 parts of MSN and 0.5-50 parts of KH560 and disperse them in 10-100 parts of the first solvent, adjust the pH of the solution to 4, and stir under ultrasonic stirring and N 2 Under protective atmosphere conditions, carry out hydrolysis condensation reaction, in order to graft KH560 onto the surface of MSN, prepare KH560-MSN; as attached figure 1 shown, with figure 1 The structure diagram of the KH560-MSN is given in ; figure 1 As can be seen in , KH560 grafted MSN was achieved, where MSN was used as nanofiller.

[0035] Wherein, the first solvent is a good solvent of MSN; specifi...

Embodiment 1

[0057] This embodiment 1 provides a method for preparing a composite coating with self-repairing, breathable and wear-resistant properties, which specifically includes the following steps:

[0058] Step 1. Prepare hyperbranched polyphenylboronic acid-grafted mesoporous silica nanoparticles (HPB-MSN); wherein, the preparation process is as follows:

[0059] First, in terms of parts by mass, 0.1 part of MSN and 0.5 part of KH560 were dispersed in 100 parts of methanol solution, and the pH of the solution was adjusted to 4. After ultrasonic stirring and N 2 Under the condition of protective atmosphere, the hydrolysis and condensation reaction is carried out to prepare KH560-MSN.

[0060] Next, put the above-prepared KH560-MSN in 10 parts of tetrahydrofuran, and add 0.2 parts of 4-butanediol diglycidyl ether and 0.2 parts of trimethylol propane trimerglycol ether (amino-terminated) , at a temperature of 55°C, N 2 Under the condition of atmosphere, reflux reaction for 8h; through...

Embodiment 2

[0069] This embodiment 2 provides a method for preparing a composite coating with self-repairing, breathable and wear-resistant properties, which specifically includes the following steps:

[0070] Step 1. Prepare hyperbranched polyphenylboronic acid-grafted mesoporous silica nanoparticles (HPB-MSN); wherein, the preparation process is as follows:

[0071] First, in terms of parts by mass, 1 part of MSN and 10 parts of KH560 were dispersed in 100 parts of ethanol solution, and the pH of the solution was adjusted to 4. After ultrasonic stirring and N 2 Under the condition of protective atmosphere, the hydrolysis and condensation reaction is carried out to prepare KH560-MSN.

[0072] Next, the KH560-MSN prepared above was placed in 50 parts of tetrahydrofuran, and 5 parts of resorcinol diglycidyl ether and 5 parts of tris(3-aminopropyl)amine were added respectively, at a temperature of 55 °C, N 2 Under the condition of atmosphere, reflux reaction for 8h; through the ring-openi...

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Abstract

The invention discloses a self-repairing, breathable and wear-resisting composite coating and a preparation method and application thereof. The preparation method comprises the following steps of: preparing hyperbranched polyphenylboronic acid grafted mesoporous silica nanoparticles; preparing a composite emulsion by using the hyperbranched polyphenylboronic acid grafted mesoporous silica nanoparticles; and spraying the composite emulsion on the surface of a matrix, and drying to obtain the self-repairing, breathable and wear-resisting composite coating. The coating is endowed with good self-repairing function, air permeability and wear resistance by utilizing the enhancement benefit, abundant pore structure and dynamic reversible bond of the MSN. The composite coating not only overcomes the defects of poor wear resistance, poor air permeability and the like of a traditional water-based polymer coating, but also can be endowed with an excellent room-temperature self-repairing function. The preparation cost is low, the operation process is simple, and conditions are mild.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a composite coating with self-repairing, air-permeable and wear-resistant properties, a preparation method and application thereof. Background technique [0002] The coating is a continuous film obtained by coating the surface of the substrate, which can protect, insulate and conceal the substrate, so it is widely used in various fields. However, when water-based coatings are used as coatings, due to insufficient molecular chain strength, the coatings are easily damaged, resulting in a greatly reduced protective function and life; in addition, when used as coatings for clothing, shoes and sofas, due The film formation of the polymer itself is relatively dense, resulting in poor air permeability of its products, which greatly affects the comfort and value of its products. [0003] Self-healing material is a kind of smart material that can repair itself when damaged. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/04C09D129/04C09D189/00C09D167/04C09D7/62
CPCC09D133/04C09D175/04C09D129/04C09D189/00C09D167/04C09D7/62C09D7/70C08K9/08C08K9/06C08K7/26
Inventor 刘超韩相鹏薛新鲍艳李茜袁启明
Owner SHAANXI UNIV OF SCI & TECH
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