UV Curable Self-Healing Structural Epoxy Composite Materials Interfacial Polycondensation Microencapsulation of Healing Agent and Photo-Initiator

<div>The ability of polymeric coatings to self-heal itself from mechanical damage is explored in this paper. Polymeric coatings with self-healing property is one of the important aspects in modern science. It can be used in industries such as oil industry (protection against corrosion), mechanical engineering, aircraft, etc. The polyurethane (PU) microparticles were synthesized on the basis of polypropyleneglycol (PPG) and toluene diisocyanate (TDI) with a method of interfacial polycondensation at the interface water-benzene. Further to study the surface morphology of the microcapsules with healing agent (trimethylolpropanetriacrylate–TMPTA) obtained PU was applied the method of scanning electron and atomic force microscopy. The PU microparticles hollow inside have regular spherical shape with a diameter of 5-10 µm with a dense and smooth polymerics shell. The resulting polyimide–olyurethane (PI–PU) composites have high potential to regenerate damaged surfaces not only on the surface and also in the volume of composite within several minutes.</div><div> </div>

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Production of Self-Healing PI Polymeric Films with Encapsulated TMPTA in PU Microparticles

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.548-549.344 ◽

2014 ◽

Vol 548-549 ◽

pp. 344-348

Author(s):

Gulzira Tleubayeva ◽

Bakhtiyar Khudaibergenov ◽

Rinat Iskakov ◽

Indira Tleubayeva

Keyword(s):

Mechanical Damage ◽

Spherical Shape ◽

Polymeric Films ◽

Self Healing ◽

Polymeric Coatings ◽

Force Microscopy ◽

Atomic Force ◽

Healing Agent ◽

Healing Property ◽

Regular Spherical Shape

The ability of polymeric coatings to self-heal from mechanical damage is explored in this paper. Polymeric coatings with self-healing property isoneof the important aspects in science. It can be used in industries such as oil industry (protect against corrosion), mechanical engineering, aircraft, etc. The PU microparticles were synthesized on the basis of PPG and TDI with a method of interfacial polycondensation at the interface water-benzene. Further to study the surface morphology of the microcapsules with healing agent (TMPTA) obtained PU was applied the method of scanning electron and atomic force microscopy. The PU microparticles hollow inside have regular spherical shape with a diameter of 5-10 μm with a dense and smooth polymeric shell. The resulting polyimide – polyurethane (PI – PU) composites have high potential to regenerate damaged surfaces not only on the surface and also in the volume of composite.

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Reversible Assembly of Terpyridine Incorporated Norbornene-Based Polymer via a Ring-Opening Metathesis Polymerization and Its Self-Healing Property

Polymers ◽

10.3390/polym10101173 ◽

2018 ◽

Vol 10 (10) ◽

pp. 1173 ◽

Cited By ~ 3

Author(s):

Jookyeong Lee ◽

Hwi Moon ◽

Keewook Paeng ◽

Changsik Song

Keyword(s):

Ring Opening ◽

Transition Metal Ions ◽

Self Healing ◽

Ring Opening Metathesis Polymerization ◽

Metathesis Polymerization ◽

Ligand Interactions ◽

Healing Agent ◽

Healing Property ◽

External Stimuli ◽

Metal Ligand

We induced a terpyridine moiety into a norbornene-based polymer to demonstrate its self-healing property, without an external stimulus, such as light, heat, or healing agent, using metal–ligand interactions. We synthesized terpyridine incorporated norbornene-based polymers using a ring-opening metathesis polymerization. The sol state of diluted polymer solutions was converted into supramolecular assembled gels, through the addition of transition metal ions (Ni2+, Co2+, Fe2+, and Zn2+). In particular, a supramolecular complex gel with Zn2+, which is a metal with a lower binding affinity, demonstrated fast self-healing properties, without any additional external stimuli, and its mechanical properties were completely recovered.

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Microencapsulation of UV-Curable Self-healing Agent for Smart Anticorrosive Coating

Chinese Journal of Chemical Physics ◽

10.1063/1674-0068/27/05/607-615 ◽

2014 ◽

Vol 27 (5) ◽

pp. 607-615 ◽

Cited By ~ 7

Author(s):

Dong Zhao ◽

Mo-zhen Wang ◽

Qi-chao Wu ◽

Xiao Zhou ◽

Xue-wu Ge

Keyword(s):

Self Healing ◽

Uv Curable ◽

Anticorrosive Coating ◽

Healing Agent

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Self-Healing Coatings for Corrosion Inhibition of Metals

Modern Applied Science ◽

10.5539/mas.v9n7p214 ◽

2015 ◽

Vol 9 (7) ◽

pp. 214 ◽

Cited By ~ 5

Author(s):

Akihiro Yabuki

Keyword(s):

Polymer Coating ◽

Protective Coatings ◽

Mechanical Damage ◽

Metal Particles ◽

Building Structures ◽

Self Healing ◽

Metallic Materials ◽

Chromate Conversion Coatings ◽

Healing Agent ◽

Zinc Coated Steel

Anti-corrosion protective coatings have been widely applied as a surface treatment to prevent corrosion ofvarious metallic materials, such as aluminum alloys, magnesium alloys, steel and zinc-coated steel, which areused in automobile parts, building structures, home appliances, etc. One of the most important characteristics ofthese coatings is the ability to self-heal. If a self-healing coating suffers mechanical damage and corrosivespecies in the environment begin to degrade the bare metal surface, the damaged surface is automaticallyrepaired by a chemical component of the coating. Chromate conversion coatings have self-healing properties.However, environmental concerns have necessitated the reduction and discontinuation of chromate-basedprotective coatings in recent years. This paper describes two recently developed self-healing coatings — afluorine polymer coating with metal particles and a coating comprised of particles and an organic healing agent.A fluorine polymer coating has self-healing properties, which are improved by the addition of metal particles. Aself-healing coating that uses particles and an organic healing agent has also been developed.

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Self-Healing UV Curable Acrylate Coatings for Wood Finishing System, Part 1: Impact of the Formulation on Self-Healing Efficiency

Coatings ◽

10.3390/coatings10080770 ◽

2020 ◽

Vol 10 (8) ◽

pp. 770

Author(s):

Chloé Paquet ◽

Thomas Schmitt ◽

Jolanta E. Klemberg-Sapieha ◽

Jean-François Morin ◽

Véronic Landry

Keyword(s):

Mechanical Properties ◽

Scratch Resistance ◽

The Self ◽

Cross Linking ◽

Hydroxyl Groups ◽

Self Healing ◽

Hydrogen Binding ◽

Uv Curable ◽

Wood Flooring ◽

Healing Property

In the wood flooring sector, good surface mechanical properties, such as abrasion and scratch resistance, are prerequisite. Surface wood protection is provided by finishing systems. Despite coating improvement, scratches formation on wood flooring is unavoidable. A new approach to increase service life is to confer the self-healing property to the finishing system. The most common coatings used for prefinished wood flooring are acrylate UV curable 100% solids coatings. They usually have good mechanical properties and high cross-linking density. The objective of this study was to develop and evaluate an intrinsic self-healing formulation, which is applicable to wood flooring. For this purpose, acrylate formulations were developed with monomers and oligomers carrying hydroxyl groups. To meet the requirements of wood application, hardness, and polymerization conversion of coatings were evaluated. König pendulum damping tests provide information on coating hardness and flexibility. Results around 80 oscillations is acceptable for UV curable wood sealer. The chemical composition was studied by FT-IR spectroscopy while dynamical mechanical analysis (DMA) was performed to determine glass transition temperature and cross-linking density. The self-healing behavior was evaluated by gloss and scratch depth measurements. The formulation’s composition impacted the hydrogen binding quantity, the conversion, the Tg and the cross-linking density. The (hydroxyethyl)methacrylate (HEMA) monomer provided self-healing and acrylated allophanate oligomer allowed self-healing and cross-linking. This study demonstrated that it is possible to combine high cross-linking density and self-healing property, using components with low steric hindrance.

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(Invited) Advanced Coating with Self-Healing Property By Healing Agent in Pore of Porous Film Formed on Al Alloy

ECS Meeting Abstracts ◽

10.1149/ma2020-02111249mtgabs ◽

2020 ◽

Vol MA2020-02 (11) ◽

pp. 1249-1249

Author(s):

Makoto Chiba ◽

Yumino Tomioka ◽

Kota Hirasawa ◽

Yuki Tsuji ◽

Haruno Yanagimoto ◽

...

Keyword(s):

Porous Film ◽

Al Alloy ◽

Self Healing ◽

Healing Agent ◽

Healing Property

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SYNTHESIS OF MICROCAPSULES FROM PREPOLYURETHANES

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/55/1b/12101 ◽

2018 ◽

Vol 55 (1B) ◽

pp. 138

Author(s):

Ha La Thi Thai

Keyword(s):

Interfacial Polymerization ◽

Gum Arabic ◽

Chain Extender ◽

Toluene Diisocyanate ◽

Agitation Rate ◽

Self Healing ◽

The Core ◽

Core Content ◽

Oil In Water ◽

Healing Agent

Polyurethane (PU) microcapsules containing toluene diisocyanate (TDI) healing agent were synthesized by mixing PU with chain extender ethyleneglycol (EG) via interfacial polymerization of oil–in–water (gum arabic emulsifier). The morphology and size of the capsules greatly depend on a variety of factors including dispersion speed and emulsifier ratio. The preparation of PU prepolymer and microcapsulation of TDI are presented. The diameter of smooth spherical microcapsules ranged from 93, 160 and 239 µm are produced by varying the agitation rate from 800 rpm to 1200 rpm. The core content of microcapsules is influenced by the ratio of chlorobenzene (CB) solvent in oil phase. The microcapsules have about 40.5 wt% of core which are capable of application in self–healing coatings when using 20 wt% CB and 17.5 wt% emulsifer ratio.

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Characterization of Steel Slag Filler and Its Effect on Aging Resistance of Asphalt Mastic with Various Aging Methods

Materials ◽

10.3390/ma14040869 ◽

2021 ◽

Vol 14 (4) ◽

pp. 869

Author(s):

Minghua Wei ◽

Shaopeng Wu ◽

Haiqin Xu ◽

Hechuan Li ◽

Chao Yang

Keyword(s):

Particle Size ◽

Surface Characterization ◽

Steel Slag ◽

Self Healing ◽

Limestone Filler ◽

Asphalt Mastic ◽

Pore Characterization ◽

Asphalt Mastics ◽

Healing Property

Steel slag is the by-product of the steelmaking industry, the negative influences of which prompt more investigation into the recycling methods of steel slag. The purpose of this study is to characterize steel slag filler and study its feasibility of replacing limestone filler in asphalt concrete by evaluating the resistance of asphalt mastic under various aging methods. Firstly, steel slag filler, limestone filler, virgin asphalt, steel slag filler asphalt mastic and limestone filler asphalt mastic were prepared. Subsequently, particle size distribution, surface characterization and pore characterization of the fillers were evaluated. Finally, rheological property, self-healing property and chemical functional groups of the asphalt mastics with various aging methods were tested via dynamic shear rheometer and Fourier transform infrared spectrometer. The results show that there are similar particle size distributions, however, different surface characterization and pore characterization in the fillers. The analysis to asphalt mastics demonstrates how the addition of steel slag filler contributes to the resistance of asphalt mastic under the environment of acid and alkaline but is harmful under UV radiation especially. In addition, the pore structure in steel slag filler should be a potential explanation for the changing resistance of the asphalt mastics. In conclusion, steel slag filler is suggested to replace limestone filler under the environment of acid and alkaline, and environmental factor should be taken into consideration when steel slag filler is applied to replace natural fillers in asphalt mastic.

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