Functionalized Si3N4 nanoparticles modified with hydrophobic polymer chains by surface-initiated atom transfer radical polymerization (ATRP)

Sun, Na; Meng, Xiangbao; Xiao, Zhenggang

doi:10.1016/j.ceramint.2015.08.068

Cited by 24 publications

(14 citation statements)

References 30 publications

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“…Figure depicts the TEM images of nano‐TiO 2 , MPS‐TiO 2 , and TiO 2 /PDFMA nanocomposites with different TiO 2 content. As shown in Figure (a), the native nano‐TiO 2 appears to aggregate that might be caused by the van der Vaals interparticle attraction between primary particles themselves . After modified by silane coupling agent, it is seen that the dispersibility of particles is better than native particles [Figure (b)].…”

Section: Resultsmentioning

confidence: 87%

Preparation, thermostability, and hydrophobic properties ofTiO₂/poly(dodecafluoroheptyl methacrylate) nanocomposites

Xiao

Guo

Sun

2016

J of Applied Polymer Sci

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Poly(dodecafluoroheptyl methacrylate) (PDFMA)/titanium dioxide (TiO2) nanocomposites with high TiO2 content were successfully prepared by emulsion polymerization process. Before polymerization, nano‐TiO2 was pretreated by silane coupling agent. Surface groups and composition of the modified nano‐TiO2 were characterized by Fourier transform infrared and X‐ray photoelectron spectra. The microstructure of nanocomposites was observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). In addition, the thermo‐stability and wetting behavior were also investigated in relation to the dosage of TiO2. The results showed that the thermostability is improved with the increment of TiO2 content while hydrophilic properties exhibit nonlinear variation with the content of TiO2. The optimal percentage of TiO2 content in the TiO2/PDFMA nanocomposites is 30% that could lead to the higher thermostability and hydrophobicity properties of composites. The maximum water contact angle (WCA) of nanocomposites can reach 120° ± 1°. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44377.

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Section: Resultsmentioning

confidence: 87%

Preparation, thermostability, and hydrophobic properties ofTiO₂/poly(dodecafluoroheptyl methacrylate) nanocomposites

Xiao

Guo

Sun

2016

J of Applied Polymer Sci

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“…The TFEMA was passed through a column of basic alumina and distilled under reduced pressure to remove the inhibitor, and were stored in a refrigerator before use . The silane coupling agent γ‐(methacryloyloxy) propyltrimethoxysilane (KH570) was used to modify the nano‐TiO 2 . The procedure for pretreatment of TiO 2 nanoparticles was as follows: TiO 2 nanoparticles (5 g), anhydrous ethanol (130 ml), ammonia (3.4 g), deionized water (6.5 g), and KH570 (3.1 g) were successively added into a flask (250 ml) and ultrasonically dispersed for 1.5 h. Then the flask was connected with a return tube and a thermometer, and the dispersion was continually stirred in it at 75°C for 5.5 h. After the reaction, the white powders (KH570‐TiO 2 ) were obtained by vacuum drying for 15 h after filtering and washing with anhydrous ethanol four times to remove the unreacted KH570.…”

Section: Methodsmentioning

confidence: 99%

Retracted: A novel composite coating to improve the environmental adaptability of combustible cartridges

Chen

2018

Polymer Composites

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The combustible cartridge, as a kind of porous composite material, is easy to absorb moisture, thus affecting its combustion performance. Generally, storage and protection methods of a combustible cartridge are based on multilayer coatings. Nevertheless, it makes the coating process more expensive and complex by increasing the number of coatings layers. In this article, poly (trifluoroethyl methacrylate) was grafted onto the surface of the nano‐size titanium dioxide particles. The fluorine‐containing nanocomposite material and nitrocellulose varnish were used as the film‐forming material of a composite coating. Additives polyvinyl alcohol and polysorbate were separately used as an antistatic agent and surfactant. The final formula of coating was determined. Eventually, the multifunctional coating was deposited on the surface of a combustible cartridge using a spraying method to form the composite coating, and the preparation parameters of the composite coating were determined. Results demonstrate that the varnish‐fluoropolymer composite coating on the surface of combustible cartridge can improve the environmental adaptability and mechanical properties. Furthermore, the composite coating has no negative effects on the combustion performance of combustible cartridge, indicating a promising application in the coating of combustible cartridge to improve its environment adaptability. POLYM. COMPOS., 40:695–703, 2019. © 2018 Society of Plastics Engineers

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“…The nitrocellulose was obtained from Northern Sichuan Nitrocellulose Co. with 12.6% nitrogen. The TFEMA was passed through a column of basic alumina and distilled under reduced pressure to remove the inhibitor, and were stored in a refrigerator before use .…”

Section: Methodsmentioning

confidence: 99%

“…TiO 2 nanoparticles were modified by the silane coupling agent γ‐(methacryloyloxy) propyltrimethoxysilane (KH570) . The procedure for pretreatment of TiO 2 nanoparticles was as follows: 5 g TiO 2 nanoparticles, 130 ml anhydrous ethanol, 6.5 g deionized water, 3.4 g ammonia and 3.1 g KH570 were successively added into a 250 ml flask and ultrasonically dispersed for 1 h. Then the flask was connected with a return tube and a thermometer, and the dispersion was continually stirred in it at 75°C for 5 h. After the reaction, the white powders KH570‐TiO 2 were obtained by vacuum drying after filtering and washing with anhydrous ethanol several times to remove the unreacted KH570.…”

Section: Methodsmentioning

confidence: 99%

Design and fabrication of a composite coating to improve the environmental adaptability of combustible cartridges

Chen

Shi

Tian³

et al. 2018

Polymer Composites

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A combustible cartridge is a kind of porous composite material. It absorbs moisture easily, thus affecting its combustion performance. Usually, storage and protection methods of a combustible cartridge are based on multilayer coatings. However, increasing the number of coatings layers makes the coating process more complex and expensive. In this article, nano‐size titanium dioxide (TiO2) particles were grafted with poly (trifluoroethyl methacrylate). The fluorine‐containing nanocomposite material was used with nitrocellulose as the film‐forming material of a composite coating. Additives polysorbate and polyvinyl alcohol (PVA) were separately used as a surfactant and antistatic agent. The final formula of coating was determined. Eventually, the multifunctional coating was deposited on the surface of a combustible cartridge using a spraying method to form the composite coating, and the preparation parameters of the composite coating were determined. Results demonstrate that the binary mixed solvent‐fluoropolymer composite coating on the surface of combustible cartridge can improve the mechanical properties and environmental adaptability. Moreover, the composite coating has no negative effects on the combustion performance of combustible cartridge, indicating a promising application in the coating of combustible cartridge to improve its environment adaptability. POLYM. COMPOS., 40:685–694, 2019. © 2018 Society of Plastics Engineers

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Functionalized Si3N4 nanoparticles modified with hydrophobic polymer chains by surface-initiated atom transfer radical polymerization (ATRP)

Cited by 24 publications

References 30 publications

Preparation, thermostability, and hydrophobic properties ofTiO₂/poly(dodecafluoroheptyl methacrylate) nanocomposites

Preparation, thermostability, and hydrophobic properties ofTiO₂/poly(dodecafluoroheptyl methacrylate) nanocomposites

Retracted: A novel composite coating to improve the environmental adaptability of combustible cartridges

Design and fabrication of a composite coating to improve the environmental adaptability of combustible cartridges

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Functionalized Si3N4 nanoparticles modified with hydrophobic polymer chains by surface-initiated atom transfer radical polymerization (ATRP)

Cited by 24 publications

References 30 publications

Preparation, thermostability, and hydrophobic properties ofTiO2/poly(dodecafluoroheptyl methacrylate) nanocomposites

Preparation, thermostability, and hydrophobic properties ofTiO2/poly(dodecafluoroheptyl methacrylate) nanocomposites

Retracted: A novel composite coating to improve the environmental adaptability of combustible cartridges

Design and fabrication of a composite coating to improve the environmental adaptability of combustible cartridges

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Product

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Preparation, thermostability, and hydrophobic properties ofTiO₂/poly(dodecafluoroheptyl methacrylate) nanocomposites

Preparation, thermostability, and hydrophobic properties ofTiO₂/poly(dodecafluoroheptyl methacrylate) nanocomposites