研究目的
To overcome the challenge of simultaneously achieving high mechanical strength and high self-healing efficiency within a short healing time for self-healing polyacrylate coatings.
研究成果
The developed HPA coatings exhibit high mechanical strength, thermal resistance, and excellent self-healing efficiency within a short time under NIR laser irradiation. The unique structure of HPM and the use of PDAPs as photothermal conversion agents are crucial for achieving these properties.
研究不足
The study focuses on the development and characterization of the HPA coatings but does not extensively explore the long-term durability under various environmental conditions or the scalability of the synthesis process for industrial applications.
1：Experimental Design and Method Selection:
The study involved the synthesis of a new polyacrylate coating (HPA) using multi-maleimide terminated hyperbranched polysiloxane (HPM), linear polyacrylate with furan-containing side chain (LFP), and polydopamine particles (PDAPs) as photothermal conversion agents. The Diels-Alder reaction was employed to form a reversible covalent crosslinking network.
2：Sample Selection and Data Sources:
The materials used included 2-Amino-2-(hydroxymethyl)-1,3-propanediol (THAM), 2,2-Azodiisobutyronitrile (AIBN), furfuryl methacrylate, isophorone diisocyanate (IPDI), and dopamine hydrochloride, among others.
3：List of Experimental Equipment and Materials:
Instruments used included INOVA 600 MHz and 300 MHz NMR spectrometer, Bruker Vertex 70 spectrometer, Hitachi S-4700 SEM, FEI TECNAI G20 TEM, and TA Instruments Q800 DMA.
4：Experimental Procedures and Operational Workflow:
The synthesis involved polymerization of LFP, synthesis of HPM, preparation of HPA coatings, and characterization using various techniques.
5：Data Analysis Methods:
Data were analyzed using techniques such as FTIR, NMR, SEM, TEM, DMA, and tensile tests to evaluate the mechanical properties and self-healing efficiency of the coatings.
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Bruker Vertex 70 spectrometer
Vertex 70
Bruker
Obtaining Fourier transform infrared (FTIR) spectra
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Hitachi S-4700 SEM
S-4700
Hitachi
Taking scanning electron microscope (SEM) images
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FEI TECNAI G20 TEM
TECNAI G20
FEI
Taking transmission electron microscopy (TEM) images
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INOVA 600 MHz NMR spectrometer
600 MHz
INOVA
Recording 1H NMR and 29Si NMR spectra
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TA Instruments Q800 DMA
Q800
TA Instruments
Performing dynamic mechanical analyses (DMA)
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TA Instruments Q200 DSC
Q200
TA Instruments
Recording differential scanning calorimetry (DSC) curves
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FOTRIC 220 infrared camera
220
FOTRIC
Recording infrared thermal images
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MTS CMT-4104 electronic universal testing machine
CMT-4104
MTS
Conducting tensile tests
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MDL-H-808-5W-17080743 Infrared laser
MDL-H-808-5W-17080743
MDL
Carrying out NIR light-triggered healing process
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