A multi-functional coating based on acrylic copolymer modified with PDMS through copolymerization

Ji, Sha; Gui, Haoguan; Guan, Guangwu; Zhou, Ming; Guo, Qipeng; Tan, Mike Yongjun

doi:10.1016/j.porgcoat.2021.106254

Cited by 17 publications

(12 citation statements)

References 38 publications

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“…The PDMS-containing block copolymers showed diffused morphology that can be attributed to the movement of siloxane moiety toward the surface of the material as reported earlier [ 31 , 38 ]. The siloxane moiety can become a dominant part of the surface and, due to this unique feature of siloxane, these materials can also be used as surface modifiers [ 17 , 18 , 41 ].…”

Section: Resultsmentioning

confidence: 99%

“…The presence of polar amide linkages on the surface of the terpolyamides can be responsible for the increased water absorption due to their increased hydrogen bonding with water molecules leading to more hydrophilicity [ 32 ]. The low water absorption by the block copolymers can be attributed to the great hydrophobic character of siloxane moiety that obscures the polar amide linkages on the surface of the block copolymer [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

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Ferrocene-Based Terpolyamides and Their PDMS-Containing Block Copolymers: Synthesis and Physical Properties

et al. 2022

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Aromatic polyamides are well-known as high-performance materials due to their outstanding properties making them useful in a wide range of applications. However, their limited solubility in common organic solvents restricts their processability and becomes a hurdle in their applicability. This study is focused on the synthesis of processable ferrocene-based terpolyamides and their polydimethylsiloxane (PDMS)-containing block copolymers, using low-temperature solution polycondensation methodology. All the synthesized materials were structurally characterized using FTIR and 1H NMR spectroscopic techniques. The ferrocene-based terpolymers and block copolymers were soluble in common organic solvents, while the organic analogs were found only soluble in sulfuric acid. WXRD analysis showed the amorphous nature of the materials, while the SEM analysis exposed the modified surface of the ferrocene-based block copolymers. The structure–property relationship of the materials was further elucidated by their water absorption and thermal behavior. These materials showed low to no water absorption along with their high limiting oxygen index (LOI) values depicting their good flame-retardant behavior. DFT studies also supported the role of various monomers in the polycondensation reaction where the electron pair donation from HOMO of diamine monomer to the LUMO of acyl chloride was predicted, along with the calculation of various other parameters of the representative terpolymers and block copolymers.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Ferrocene-Based Terpolyamides and Their PDMS-Containing Block Copolymers: Synthesis and Physical Properties

et al. 2022

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“…Over the years, scientists have expended much effort to improve the compatibility of the PDMS and epoxy system. , Common methods to improve the compatibility include a physical method (introducing the third component compatibilizer) and chemical methods (grafting and block reaction). The graft or block reaction often occurs between organic functional groups such as −OH, −NH 2 , and alkoxy. − In recent years, the construction of interpenetrating polymer networks and hybrid networks is also an effective way to improve the compatibility. Yang et al introduced a new type of in situ silicone-epoxy IPN system with improved compatibility and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Improved Mechanical and Ablative Properties of PDMS Coatings Incorporating Epoxy as a Suspended Chain

Wang,

Cai,

Ling

et al. 2023

Ind. Eng. Chem. Res.

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Flexible thermal protection materials with excellent mechanical and ablative properties were one of the key components in promoting the development of a new generation of aircraft. In the present work, a robust, strongly adhesive, and ablation-resistant PDMS coating was prepared through the covalent connection between PDMS and vinyl-functionalized epoxy resin (EAP) by hydrosilylation. The EAP synthesized by molecular design was uniformly dispersed in the PDMS matrix as an island phase-separation structure. The tensile strength, elongation at break, and shear strength of EAP-modified PDMS (EAP@PDMS) were significantly increased by 575%, 155%, and 183%, respectively, when compared with pure PDMS. Besides, the linear ablation rate (LAR) of EAP@PDMS was greatly declined, which was 80.1% lower than that of pure PDMS, exhibiting excellent ablation resistance. This work opened an avenue toward developing flexible thermal protection coatings with excellent mechanical and ablative properties for aerospace applications.

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“…Grafting low surface energy fluoro-/silicon-containing monomers into acrylic polymers has been adopted to improve the film hydrophobicity, anticorrosion, and mechanical properties. − For example, the fluoro-silicone acrylate (FSA) co-polymer latex shows excellent water repellency for cotton and silk textile . After the introduction of a silicon group by 2-(3,4-epoxy) ethyltriethoxysilane into waterborne acrylic resin, the water contact angle (WCA) of the resin film was improved remarkably, and the film tensile strength was improved from 2.9 MPa of the parallel no-silicon one to 3.6 MPa .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of the Cross-Linked Fluoro-Silicon Polyacrylate–Polyurethane Hybrid Emulsions for Superior Performance of Waterborne Coatings

Meng,

Liu,

et al. 2023

ACS Appl. Polym. Mater.

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This work focuses on the problem-solution of the weak mechanical properties, low water and corrosion resistances encountered in waterborne hydroxyl acrylic resin (WA) by low surface energy modification, and the construction of cross-linking structure. A waterborne hydrophobic hydroxyl acrylic resin (WFSA) with core−shell structure was first synthesized by the emulsion polymerization technique using acrylate monomers as the main materials and 3-(methacryloyloxy)propyltris-(trimethbylsilyloxy) silane (M 3 T) and 2-(perfluorooctyl)ethyl methacrylate (FMA) as modified monomers. Then, different contents of hydrophilic polyisocyanate cross-linking agent (XP2655) were introduced into WFSA to obtain the cross-linked coatings (CFSAUs). The results showed that the comprehensive properties of CFSAUs are mainly determined by the hydrophobicity of the resin matrix and the cross-linking degree between WFSA and XP2655. The cross-linking density, the water absorption, the water contact angle, and the tensile strength of the optimal CFSAU-8 coatings are 11.75 × 10 −4 mol/cm 3 , 5.64%, 110.1°, and 6.14 MPa, respectively. Moreover, CFSAU-8 not only possessed better thermal stability when compared with WA and WFSA but also maintained a low frequency (0.01 Hz) impedance modulus, being larger than 10 6 Ω cm 2 even after immersion in 3.5 wt % NaCl solution for 15 days. CFSAU-8 coating is possibly qualified to be applied in waterproof and corrosion protection fields.

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A multi-functional coating based on acrylic copolymer modified with PDMS through copolymerization

Cited by 17 publications

References 38 publications

Ferrocene-Based Terpolyamides and Their PDMS-Containing Block Copolymers: Synthesis and Physical Properties

Ferrocene-Based Terpolyamides and Their PDMS-Containing Block Copolymers: Synthesis and Physical Properties

Improved Mechanical and Ablative Properties of PDMS Coatings Incorporating Epoxy as a Suspended Chain

Preparation and Characterization of the Cross-Linked Fluoro-Silicon Polyacrylate–Polyurethane Hybrid Emulsions for Superior Performance of Waterborne Coatings

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