Self-healing through microencapsulated agents for protective coatings

Schreiner, Claus; Scharf, Sabine; Stenzel, Volkmar; Rössler, Albert

doi:10.1007/s11998-017-9921-x

Cited by 17 publications

(8 citation statements)

References 9 publications

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“…A capsule is a good type of microstorage. 39 The repairable superhydrophobic material can be obtained by dispersing microcapsules loaded with low surface energy components into the matrix material. When this material is damaged or stimulated by a certain signal, it can induce the rupture of the capsule and release the capsule core, which can repair the damaged part like the plant repairing its own damage, so that the function of the material is more lasting and has a longer service life.…”

Section: Microencapsulation Approachmentioning

confidence: 99%

Self-healing system of superhydrophobic surfaces inspired from and beyond nature

Guo

2023

Nanoscale

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Section: Microencapsulation Approachmentioning

confidence: 99%

Self-healing system of superhydrophobic surfaces inspired from and beyond nature

Guo

2023

Nanoscale

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“…The results showed that the particle size of the microcapsules affect its dispersion in the coating, and then affect the curing performance of the core repair agent. Schreiner et al [ 19 ] designed a self-healing coating for metal corrosion protection or moisture sensitive substrate protection such as wood. The results showed that the self-healing coating with microcapsules had obvious advantages over the traditional protective coating.…”

Section: Introductionmentioning

confidence: 99%

Influence of HLB Value of Emulsifier on the Properties of Microcapsules and Self-Healing Properties of Waterborne Coatings

Tao

Yan

2022

Polymers

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In this paper, self-healing microcapsules were prepared by using melamine–formaldehyde (MF) resin as the wall material and shellac as the core material repairing agent. In order to explore the effect of the four factors (i.e., the HLB value of emulsifier, the type of solvent, the mass ratio of shellac to rosin, and the rate of rotating) on the comprehensive performance of microcapsules, and orthogonal experiments with four factors and three levels were carried out. The results showed that the hydrophilic lipophilic balance (HLB) value of the emulsifier was the most important influencing factor. In order to further explore the relationship between the HLB value of the emulsifier and the morphology of the microcapsules and the coating rate as well as to further optimize the performance of the microcapsules, taking the HLB value of the emulsifier as the single factor variable, single-factor tests were carried out. The results showed that when the HLB value was 12.56, the microcapsules of melamine–formaldehyde resin-coated shellac–rosin mixture had a uniform distribution and high coating rate. In order to explore the self-healing properties of waterborne coatings with microcapsules, the microcapsules prepared by single-factor experiments were mixed into the waterborne coatings at mass ratios of 0%, 3.0%, 6.0%, 9.0%, 12.0%, and 15.0%. It showed that the elongation at break of the waterborne coating with the addition of 3.0% microcapsule at mass fraction was improved, and it had a higher repair rate. This study provides a new research idea for the optimization and characterization of the self-healing properties of waterborne coatings.

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“…It was found that the microcapsules containing IPDI not only enabled the coating to have self-healing properties, but also improved the thermal stability of the coating. Schreiner et al [ 27 ] prepared microcapsules with good self-healing ability by using thermosetting resins (urea-formaldehyde resin and melamine-formaldehyde) as substrates. Additionally, the self-healing process of the microcapsules needs to be carried out at a higher temperature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Urea-Formaldehyde Microcapsule Containing Fluororesin and Its Effect on Performances of Waterborne Coatings on Wood Surface

Yan

Yin

2021

Polymers

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In order to self-repair the cracks of waterborne coatings on Basswood at room temperature, with fluororesin and waterborne coatings embedded in the shell structure of urea formaldehyde (UF) resin, the microcapsules were fabricated via in-situ polymerization, and the effect of microcapsules on the chroma, gloss, mechanics and repair effect for waterborne coatings on wood was discussed. The results indicated that the coating effect was the most significant when the ratio value of the core materials to the shell material of microcapsules in mass was 0.75, and the agglomeration of particles was the least and the surface was the smoothest when the content of microcapsules was 1.0%. It was negative between the gloss of the film and microcapsule content. The ratio value of the core materials to the shell material in mass and the amount of microcapsules had great influence on the film hardness and adhesion, but had little effect on the impact resistance. When the ratio value of the core materials to the shell material of microcapsules in mass was 0.65 and the addition amount was 4.0–10.0%, the aging resistance of the film was improved most significantly. When the ratio value of the core materials to the shell material of microcapsules in mass was 0.65 and the addition amount was 7.0%, the overall properties of topcoat film on Basswood board was the most significant. It is for the application of fluororesin microcapsules possessing self-repairing effect in waterborne coating on Basswood board that a technical groundwork is provided by this study.

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Self-healing through microencapsulated agents for protective coatings

Cited by 17 publications

References 9 publications

Self-healing system of superhydrophobic surfaces inspired from and beyond nature

Self-healing system of superhydrophobic surfaces inspired from and beyond nature

Influence of HLB Value of Emulsifier on the Properties of Microcapsules and Self-Healing Properties of Waterborne Coatings

Synthesis of Urea-Formaldehyde Microcapsule Containing Fluororesin and Its Effect on Performances of Waterborne Coatings on Wood Surface

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