研究目的
To synthesize and characterize fluorine-silicon block urethane acrylates for use in UV-curable coatings, focusing on improving thermal stability, surface energy, and anti-adhesive properties for release film applications.
研究成果
The synthesized fluorine-silicon block urethane acrylates exhibit excellent thermal stability, water and chemical resistance, low surface energy, and good anti-adhesive properties, making them highly suitable for release film applications with potential for further development.
研究不足
The study is limited to specific materials and synthesis conditions; scalability and cost of fluorinated compounds may be constraints. Optimization for industrial applications and long-term stability were not fully explored.
1:Experimental Design and Method Selection:
The study involved synthesizing a new fluorodiol (FMPG) and then using it along with hydroxypropyl-terminated polysiloxane (PSi), isophorone diisocyanate (IPDI), and hydroxyethyl methacrylate (HEMA) to prepare fluorine-silicon block urethane acrylates. UV-curing was employed with a high-pressure mercury lamp.
2:Sample Selection and Data Sources:
Materials included PFOA, AMPG, IPDI, DBTDL, EEDQ, HEMA, HFMA, 1173 photoinitiator, PSi, and various solvents. Samples were prepared with different FMPG contents (O1, O2, O3).
3:3). List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included FT-IR spectrometer (Nicolet 5700), NMR spectrometer (Avance III HD 600 MHz), GPC instrument (Agilent), UV-vis spectrophotometer (UV-3600), TGA system (Rigaku Thermo Plus TG8120), tensile tester (SANS E
4:503), contact angle goniometer (JC2000-CG400), and high-pressure mercury lamp (500 W). Materials as listed in Section Experimental Procedures and Operational Workflow:
Synthesis of FMPG via amidation, synthesis of oligomers via reaction in THF with DBTDL catalyst, UV-curing process with specific weight ratios and irradiation conditions, followed by characterization using FT-IR, NMR, GPC, UV-vis, TGA, mechanical testing, contact angle measurements, and anti-adhesive tests.
5:Data Analysis Methods:
FT-IR and NMR for structural confirmation, GPC for molecular weight analysis, UV-vis for transmittance, TGA for thermal stability, tensile testing for mechanical properties, contact angle measurements for surface energy calculation using Owens and Wendt method, and peel strength tests for anti-adhesive performance.
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Fourier transform infrared spectrometer
Nicolet 5700
Thermo Company
Characterization of molecular structures via FT-IR spectroscopy
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NMR spectrometer
Avance III HD 600 MHz
Bruker
Recording 1H and 19F NMR spectra for structural analysis
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GPC instrument
Agilent GPC
Agilent
Determination of molecular weights and distributions
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UV-vis spectrophotometer
UV-3600
Shimadzu
Recording optical transmission spectra
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TGA system
Rigaku Thermo Plus TG8120
Rigaku
Thermo gravimetric analysis for thermal stability
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Tensile tester
SANS E42.503
Measurement of mechanical properties
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Contact angle goniometer
JC2000-CG400
Measurement of contact angles for surface energy calculation
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High-pressure mercury lamp
UV irradiation for curing process
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Photoinitiator
1173
Tianjing Jiuri Chemical Co., Ltd.
Initiation of UV-curing reaction
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Reactive diluent monomer
HFMA
Aladdin
Dilution in photosensitive solutions
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Catalyst
DBTDL
Aladdin
Catalysis in synthesis reactions
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Standard adhesive tape
MY-2 G four-dimensional tape
Testing anti-adhesive properties
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Pressure-sensitive adhesive tape
Nitto31B
Nitto
Testing residual adhesion
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