The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform
N. E. Korobova - One of the best experts on this subject based on the ideXlab platform.
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Impact of silver metallization and electron irradiation on the mechanical deformation of Polyimide films
Technical Physics, 2017Co-Authors: A. D. Muradov, K. M. Mukashev, G. Sh. Yar-mukhamedova, N. E. KorobovaAbstract:The impact of silver metallization and electron irradiation on the physical and mechanical properties of Polyimide films has been studied. The metal that impregnated the structure of the Polyimide substrate was 1–5 μm. The surface coatings contained 80–97% of the relative silver mirror in the visible and infrared regions. Irradiation was performed at the ELU-6 linear accelerator with an average beam electron energy of 2 MeV, an integral current of up to 1000 μA, a pulse repetition rate of 200 Hz, and a pulse duration of 5 μs. The absorbed dose in the samples was 10, 20, 30, and 40 MGy. The samples were deformed at room temperature under uniaxial tension on an Instron 5982 universal testing system. The structural changes in the composite materials that result from the impact of the physical factors were studied using an X-ray diffractometer DRON-2M in air at 293 K using CuKα radiation (λαCu = 1.5418 A). A substantial growth of mechanical characteristics resulting from the film metallization, as compared to the pure film, was observed. The growth of the ultimate strength by Δσ = 105 MPa and the plasticity by Δe = 75% is connected with the characteristics of the change of structure of the metallized films and the chemical etching conditions. The electron irradiation of the metallized Polyimide film worsens its elastic and strength characteristics due to the formation of new phases in the form of silver oxide in the coating. The concentration of these phases increased with increasing dose, which was also the result of the violation of the ordered material structure, namely, the rupture of Polyimide Macromolecule bonds and the formation of new phases of silver in the coating. A mathematical model was obtained that predicts the elastic properties of silver metallized Polyimide films. This model agrees with the experimental data.
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Impact of silver metallization and electron irradiation on the mechanical deformation of Polyimide films
Technical Physics, 2017Co-Authors: A. D. Muradov, K. M. Mukashev, G. Sh. Yar-mukhamedova, N. E. KorobovaAbstract:The impact of silver metallization and electron irradiation on the physical and mechanical properties of Polyimide films has been studied. The metal that impregnated the structure of the Polyimide substrate was 1–5 μm. The surface coatings contained 80–97% of the relative silver mirror in the visible and infrared regions. Irradiation was performed at the ELU-6 linear accelerator with an average beam electron energy of 2 MeV, an integral current of up to 1000 μA, a pulse repetition rate of 200 Hz, and a pulse duration of 5 μs. The absorbed dose in the samples was 10, 20, 30, and 40 MGy. The samples were deformed at room temperature under uniaxial tension on an Instron 5982 universal testing system. The structural changes in the composite materials that result from the impact of the physical factors were studied using an X-ray diffractometer DRON-2M in air at 293 K using Cu K _α radiation (λ_αCu = 1.5418 Å). A substantial growth of mechanical characteristics resulting from the film metallization, as compared to the pure film, was observed. The growth of the ultimate strength by Δσ = 105 MPa and the plasticity by Δε = 75% is connected with the characteristics of the change of structure of the metallized films and the chemical etching conditions. The electron irradiation of the metallized Polyimide film worsens its elastic and strength characteristics due to the formation of new phases in the form of silver oxide in the coating. The concentration of these phases increased with increasing dose, which was also the result of the violation of the ordered material structure, namely, the rupture of Polyimide Macromolecule bonds and the formation of new phases of silver in the coating. A mathematical model was obtained that predicts the elastic properties of silver metallized Polyimide films. This model agrees with the experimental data.
A. V. Lyulin - One of the best experts on this subject based on the ideXlab platform.
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Effect of the SO2 group in the diamine fragment of Polyimides on their structural, thermophysical, and mechanical properties
Polymer Science Series A, 2012Co-Authors: S. V. Lyulin, S. V. Larin, A. A. Gurtovenko, N. V. Lukasheva, V. E. Yudin, V. M. Svetlichnyi, A. V. LyulinAbstract:Experimental and theoretical investigations, including an all-atom computer simulation, are performed for block samples of thermoplastic Polyimides, amorphous R-BAPS (based on R dianhydride 1,3-bis(3′,4-dicarboxyphenoxy)benzene and diamine BAPS 4,4′-bis(4″-aminophenoxy)biphenyl sulfone), and crystallizable R-BAPB (based on R dianhydride and diamine BAPB 4,4’-bis(4″-aminophenoxy)biphenyl), which differ in either the presence or absence of the sulfone group in the repeating unit of the Polyimide Macromolecule. The features of thermophysical, structural, and mechanical properties of R-BAPS and R-BAPB are related to the formation of associates from sulfur and oxygen atoms of the sulfone group that are stabilized by electrostatic interactions.
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Effect of the SO_2 group in the diamine fragment of Polyimides on their structural, thermophysical, and mechanical properties
Polymer Science Series A, 2012Co-Authors: S. V. Lyulin, S. V. Larin, A. A. Gurtovenko, N. V. Lukasheva, V. E. Yudin, V. M. Svetlichnyi, A. V. LyulinAbstract:Experimental and theoretical investigations, including an all-atom computer simulation, are performed for block samples of thermoplastic Polyimides, amorphous R-BAPS (based on R dianhydride 1,3-bis(3′,4-dicarboxyphenoxy)benzene and diamine BAPS 4,4′-bis(4″-aminophenoxy)biphenyl sulfone), and crystallizable R-BAPB (based on R dianhydride and diamine BAPB 4,4’-bis(4″-aminophenoxy)biphenyl), which differ in either the presence or absence of the sulfone group in the repeating unit of the Polyimide Macromolecule. The features of thermophysical, structural, and mechanical properties of R-BAPS and R-BAPB are related to the formation of associates from sulfur and oxygen atoms of the sulfone group that are stabilized by electrostatic interactions.
A. D. Muradov - One of the best experts on this subject based on the ideXlab platform.
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Impact of silver metallization and electron irradiation on the mechanical deformation of Polyimide films
Technical Physics, 2017Co-Authors: A. D. Muradov, K. M. Mukashev, G. Sh. Yar-mukhamedova, N. E. KorobovaAbstract:The impact of silver metallization and electron irradiation on the physical and mechanical properties of Polyimide films has been studied. The metal that impregnated the structure of the Polyimide substrate was 1–5 μm. The surface coatings contained 80–97% of the relative silver mirror in the visible and infrared regions. Irradiation was performed at the ELU-6 linear accelerator with an average beam electron energy of 2 MeV, an integral current of up to 1000 μA, a pulse repetition rate of 200 Hz, and a pulse duration of 5 μs. The absorbed dose in the samples was 10, 20, 30, and 40 MGy. The samples were deformed at room temperature under uniaxial tension on an Instron 5982 universal testing system. The structural changes in the composite materials that result from the impact of the physical factors were studied using an X-ray diffractometer DRON-2M in air at 293 K using CuKα radiation (λαCu = 1.5418 A). A substantial growth of mechanical characteristics resulting from the film metallization, as compared to the pure film, was observed. The growth of the ultimate strength by Δσ = 105 MPa and the plasticity by Δe = 75% is connected with the characteristics of the change of structure of the metallized films and the chemical etching conditions. The electron irradiation of the metallized Polyimide film worsens its elastic and strength characteristics due to the formation of new phases in the form of silver oxide in the coating. The concentration of these phases increased with increasing dose, which was also the result of the violation of the ordered material structure, namely, the rupture of Polyimide Macromolecule bonds and the formation of new phases of silver in the coating. A mathematical model was obtained that predicts the elastic properties of silver metallized Polyimide films. This model agrees with the experimental data.
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Impact of silver metallization and electron irradiation on the mechanical deformation of Polyimide films
Technical Physics, 2017Co-Authors: A. D. Muradov, K. M. Mukashev, G. Sh. Yar-mukhamedova, N. E. KorobovaAbstract:The impact of silver metallization and electron irradiation on the physical and mechanical properties of Polyimide films has been studied. The metal that impregnated the structure of the Polyimide substrate was 1–5 μm. The surface coatings contained 80–97% of the relative silver mirror in the visible and infrared regions. Irradiation was performed at the ELU-6 linear accelerator with an average beam electron energy of 2 MeV, an integral current of up to 1000 μA, a pulse repetition rate of 200 Hz, and a pulse duration of 5 μs. The absorbed dose in the samples was 10, 20, 30, and 40 MGy. The samples were deformed at room temperature under uniaxial tension on an Instron 5982 universal testing system. The structural changes in the composite materials that result from the impact of the physical factors were studied using an X-ray diffractometer DRON-2M in air at 293 K using Cu K _α radiation (λ_αCu = 1.5418 Å). A substantial growth of mechanical characteristics resulting from the film metallization, as compared to the pure film, was observed. The growth of the ultimate strength by Δσ = 105 MPa and the plasticity by Δε = 75% is connected with the characteristics of the change of structure of the metallized films and the chemical etching conditions. The electron irradiation of the metallized Polyimide film worsens its elastic and strength characteristics due to the formation of new phases in the form of silver oxide in the coating. The concentration of these phases increased with increasing dose, which was also the result of the violation of the ordered material structure, namely, the rupture of Polyimide Macromolecule bonds and the formation of new phases of silver in the coating. A mathematical model was obtained that predicts the elastic properties of silver metallized Polyimide films. This model agrees with the experimental data.
S. V. Lyulin - One of the best experts on this subject based on the ideXlab platform.
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Effect of the SO2 group in the diamine fragment of Polyimides on their structural, thermophysical, and mechanical properties
Polymer Science Series A, 2012Co-Authors: S. V. Lyulin, S. V. Larin, A. A. Gurtovenko, N. V. Lukasheva, V. E. Yudin, V. M. Svetlichnyi, A. V. LyulinAbstract:Experimental and theoretical investigations, including an all-atom computer simulation, are performed for block samples of thermoplastic Polyimides, amorphous R-BAPS (based on R dianhydride 1,3-bis(3′,4-dicarboxyphenoxy)benzene and diamine BAPS 4,4′-bis(4″-aminophenoxy)biphenyl sulfone), and crystallizable R-BAPB (based on R dianhydride and diamine BAPB 4,4’-bis(4″-aminophenoxy)biphenyl), which differ in either the presence or absence of the sulfone group in the repeating unit of the Polyimide Macromolecule. The features of thermophysical, structural, and mechanical properties of R-BAPS and R-BAPB are related to the formation of associates from sulfur and oxygen atoms of the sulfone group that are stabilized by electrostatic interactions.
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Effect of the SO_2 group in the diamine fragment of Polyimides on their structural, thermophysical, and mechanical properties
Polymer Science Series A, 2012Co-Authors: S. V. Lyulin, S. V. Larin, A. A. Gurtovenko, N. V. Lukasheva, V. E. Yudin, V. M. Svetlichnyi, A. V. LyulinAbstract:Experimental and theoretical investigations, including an all-atom computer simulation, are performed for block samples of thermoplastic Polyimides, amorphous R-BAPS (based on R dianhydride 1,3-bis(3′,4-dicarboxyphenoxy)benzene and diamine BAPS 4,4′-bis(4″-aminophenoxy)biphenyl sulfone), and crystallizable R-BAPB (based on R dianhydride and diamine BAPB 4,4’-bis(4″-aminophenoxy)biphenyl), which differ in either the presence or absence of the sulfone group in the repeating unit of the Polyimide Macromolecule. The features of thermophysical, structural, and mechanical properties of R-BAPS and R-BAPB are related to the formation of associates from sulfur and oxygen atoms of the sulfone group that are stabilized by electrostatic interactions.
G. Sh. Yar-mukhamedova - One of the best experts on this subject based on the ideXlab platform.
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Impact of silver metallization and electron irradiation on the mechanical deformation of Polyimide films
Technical Physics, 2017Co-Authors: A. D. Muradov, K. M. Mukashev, G. Sh. Yar-mukhamedova, N. E. KorobovaAbstract:The impact of silver metallization and electron irradiation on the physical and mechanical properties of Polyimide films has been studied. The metal that impregnated the structure of the Polyimide substrate was 1–5 μm. The surface coatings contained 80–97% of the relative silver mirror in the visible and infrared regions. Irradiation was performed at the ELU-6 linear accelerator with an average beam electron energy of 2 MeV, an integral current of up to 1000 μA, a pulse repetition rate of 200 Hz, and a pulse duration of 5 μs. The absorbed dose in the samples was 10, 20, 30, and 40 MGy. The samples were deformed at room temperature under uniaxial tension on an Instron 5982 universal testing system. The structural changes in the composite materials that result from the impact of the physical factors were studied using an X-ray diffractometer DRON-2M in air at 293 K using CuKα radiation (λαCu = 1.5418 A). A substantial growth of mechanical characteristics resulting from the film metallization, as compared to the pure film, was observed. The growth of the ultimate strength by Δσ = 105 MPa and the plasticity by Δe = 75% is connected with the characteristics of the change of structure of the metallized films and the chemical etching conditions. The electron irradiation of the metallized Polyimide film worsens its elastic and strength characteristics due to the formation of new phases in the form of silver oxide in the coating. The concentration of these phases increased with increasing dose, which was also the result of the violation of the ordered material structure, namely, the rupture of Polyimide Macromolecule bonds and the formation of new phases of silver in the coating. A mathematical model was obtained that predicts the elastic properties of silver metallized Polyimide films. This model agrees with the experimental data.
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Impact of silver metallization and electron irradiation on the mechanical deformation of Polyimide films
Technical Physics, 2017Co-Authors: A. D. Muradov, K. M. Mukashev, G. Sh. Yar-mukhamedova, N. E. KorobovaAbstract:The impact of silver metallization and electron irradiation on the physical and mechanical properties of Polyimide films has been studied. The metal that impregnated the structure of the Polyimide substrate was 1–5 μm. The surface coatings contained 80–97% of the relative silver mirror in the visible and infrared regions. Irradiation was performed at the ELU-6 linear accelerator with an average beam electron energy of 2 MeV, an integral current of up to 1000 μA, a pulse repetition rate of 200 Hz, and a pulse duration of 5 μs. The absorbed dose in the samples was 10, 20, 30, and 40 MGy. The samples were deformed at room temperature under uniaxial tension on an Instron 5982 universal testing system. The structural changes in the composite materials that result from the impact of the physical factors were studied using an X-ray diffractometer DRON-2M in air at 293 K using Cu K _α radiation (λ_αCu = 1.5418 Å). A substantial growth of mechanical characteristics resulting from the film metallization, as compared to the pure film, was observed. The growth of the ultimate strength by Δσ = 105 MPa and the plasticity by Δε = 75% is connected with the characteristics of the change of structure of the metallized films and the chemical etching conditions. The electron irradiation of the metallized Polyimide film worsens its elastic and strength characteristics due to the formation of new phases in the form of silver oxide in the coating. The concentration of these phases increased with increasing dose, which was also the result of the violation of the ordered material structure, namely, the rupture of Polyimide Macromolecule bonds and the formation of new phases of silver in the coating. A mathematical model was obtained that predicts the elastic properties of silver metallized Polyimide films. This model agrees with the experimental data.