Self-healing coatings for inhibiting corrosion of ferrous metals exposed to preservative-treated bamboo

Wang, Qingping; Cao, Jinzhen; Liu, Xinge; Yang, Shumin; Jiang, Mingliang

doi:10.1186/s10086-020-01865-4

Cited by 12 publications

(5 citation statements)

References 41 publications

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“…For instance, antimicrobial nanoparticles, including titanium dioxide (TiO 2 ), silica dioxide (SiO 2 ), silver (Ag) and zinc oxide (ZnO) nanoparticles, and other inorganic antifungal agents, have been used to modify bamboo and improve its mold resistance to varying degrees [12][13][14][15][16]. The most commonly used and investigated mildew inhibitors are organic agents, including 3iodo-2-propynyl-butylcarbamate (IPBC), 2-thiocyanomethylthiobenzothia-zole (TCMTB), and isothiazolinone derivatives (DCOIT, CMIT/MIT) [17][18][19]. IPBC has the best antimold performance and is effective against various mold fungi.…”

Section: Introductionmentioning

confidence: 99%

Mold and Stain Resistance of Bamboo Treated with Pyraclostrobin Fungicide

et al. 2022

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Bamboo is rich in starch and sugars and can be infected by mold and stain fungi, degrading its performance, shortening its service life, and reducing its utilization value. It is crucial to investigate how to protect bamboo against mold and stain fungi. The zone of inhibition test was used to evaluate the antifungal activity of azoxystrobin, kresoxim-methyl, pyraclostrobin and 3-iodo-2-propynyl-butylcarbamate (IPBC) against stain fungi (Botryodiplodia theobromae, Fusarium moniliforme, and Alternaria alternate) and mold fungi (Aspergillus niger, Penicillium citrinum, and Trichoderma viride) to develop new chemicals to protect bamboo against stain fungi and molds. The inhibitory activity of the composite pyraclostrobin and IPBC with different ratios was evaluated. Water-based formulations of the fungi were used to treat the bamboo, and the mold and stain resistance of the bamboo was investigated at different chemical retention rates. The results showed that the antifungal activity of pyraclostrobin was significantly higher than that of azoxystrobin and kresoxim-methyl. Different degrees of inhibitory activities against the stain and mold fungi were observed, and the inhibitory activity was higher against stain fungi than against molds. The three stain fungi were completely inhibited at a 7:3 ratio of pyraclostrobin to IPBC and 0.1% concentration. As the ratio increased, the inhibitory effect against mixed mold strains improved. The control efficacy of the pyraclostrobin formulations Str-1 and Str-2 at 0.1% concentration was 100% against Alternaria alternate and 70.8% against Fusarium moniliforme. The control efficacy of the composite formulations SI-1 and SI-2 at 0.1% concentration was 100% against all three stain fungi and greater than 91.8% against the mixed mold strains. This study provides new insights into the utilization of pyraclostrobin and its composite formulations as new bamboo antifungal agents.

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Section: Introductionmentioning

confidence: 99%

Mold and Stain Resistance of Bamboo Treated with Pyraclostrobin Fungicide

et al. 2022

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“…In order to obtain better mechanical properties and prolong the service life of the coating, the elasticity of the coating can be enhanced by improving the polymer elasticity in the microcapsule wall. At the same time, the types and properties of adhesives in microcapsules are also very important for the self-repairing effect of microcracks [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Coating Process Optimization and Self-Healing Performance Evaluation of Shellac Microcapsules Coated with Melamine/Rice Husk Powder

Yan

Yin

2021

Applied Sciences

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To explore the implication of the coating process on the comprehensive properties of water-based coating containing shellac microcapsules coated with melamine/rice husk powder on the Tilia cordata surface, the optical properties, mechanical properties, liquid resistance, aging resistance, chemical composition, and microstructure of the coating were analyzed comprehensively. After the best coating process was determined, compared with the coating without microcapsules, the self-repairing performance of the water-based coating containing shellac microcapsules coated with melamine/rice husk powder was explored via aging resistance test and scratch test. The results showed that the best comprehensive performance of the coating was obtained by three times primer, two times finish, and 6.0% shellac microcapsules coated with melamine/rice husk powder added in the primer. The coating with shellac microcapsules had significant stability, aging resistance, and self-healing performance, which can repair cracks in a certain period of time and inhibit the formation of cracks. At the core wall ratio of 0.75, the shellac which plays a role of the repair agent as the core material can effectively fill the microcracks in the coating to repair by flowing from the broken microcapsule because it can be physically cured at room temperature. The modification of waterborne coatings with shellac microcapsules coated with melamine/rice husk powder contributes the improved self-repairing properties of surface coatings containing heterogeneous natural polymer composites.

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“…The core material containing a repair agent can repair the cracks [ 22 ]. The application of microcapsule technology in the coating on wood surface can repair the micro-cracks in time at the early stage of microcrack formation that cannot be perceived by the naked eye [ 23 ], avoid causing micro cracks or even breaks to improve the service life of the coating film and prolonging the service life of wood. Parsaee et al [ 24 ] used epoxy resin and urea-formaldehyde/polyurethane via in-situ polymerization.…”

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 coatings for inhibiting corrosion of ferrous metals exposed to preservative-treated bamboo

Cited by 12 publications

References 41 publications

Mold and Stain Resistance of Bamboo Treated with Pyraclostrobin Fungicide

Mold and Stain Resistance of Bamboo Treated with Pyraclostrobin Fungicide

Coating Process Optimization and Self-Healing Performance Evaluation of Shellac Microcapsules Coated with Melamine/Rice Husk Powder

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

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