Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances
Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Chen, Yu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017transfer abstract |
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| Umfang: |
9 |
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| Übergeordnetes Werk: |
Enthalten in: No title available - an international journal, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:152 ; year:2017 ; day:10 ; month:11 ; pages:254-262 ; extent:9 |
| Links: |
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| DOI / URN: |
10.1016/j.compscitech.2017.09.022 |
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ELV040643603 |
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| 245 | 1 | 0 | |a Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances |
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| 520 | |a Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. | ||
| 520 | |a Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. | ||
| 650 | 7 | |a Electrical properties |2 Elsevier | |
| 650 | 7 | |a Functional composites |2 Elsevier | |
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| 700 | 1 | |a Zhang, Hao-Bin |4 oth | |
| 700 | 1 | |a Wang, Mu |4 oth | |
| 700 | 1 | |a Qian, Xin |4 oth | |
| 700 | 1 | |a Dasari, Aravind |4 oth | |
| 700 | 1 | |a Yu, Zhong-Zhen |4 oth | |
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10.1016/j.compscitech.2017.09.022 doi GBV00000000000390.pica (DE-627)ELV040643603 (ELSEVIER)S0266-3538(17)30555-9 DE-627 ger DE-627 rakwb eng Chen, Yu verfasserin aut Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Electrical properties Elsevier Functional composites Elsevier Polymer-matrix composites (PMCs) Elsevier Zhang, Hao-Bin oth Wang, Mu oth Qian, Xin oth Dasari, Aravind oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:152 year:2017 day:10 month:11 pages:254-262 extent:9 https://doi.org/10.1016/j.compscitech.2017.09.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 152 2017 10 1110 254-262 9 |
| spelling |
10.1016/j.compscitech.2017.09.022 doi GBV00000000000390.pica (DE-627)ELV040643603 (ELSEVIER)S0266-3538(17)30555-9 DE-627 ger DE-627 rakwb eng Chen, Yu verfasserin aut Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Electrical properties Elsevier Functional composites Elsevier Polymer-matrix composites (PMCs) Elsevier Zhang, Hao-Bin oth Wang, Mu oth Qian, Xin oth Dasari, Aravind oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:152 year:2017 day:10 month:11 pages:254-262 extent:9 https://doi.org/10.1016/j.compscitech.2017.09.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 152 2017 10 1110 254-262 9 |
| allfields_unstemmed |
10.1016/j.compscitech.2017.09.022 doi GBV00000000000390.pica (DE-627)ELV040643603 (ELSEVIER)S0266-3538(17)30555-9 DE-627 ger DE-627 rakwb eng Chen, Yu verfasserin aut Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Electrical properties Elsevier Functional composites Elsevier Polymer-matrix composites (PMCs) Elsevier Zhang, Hao-Bin oth Wang, Mu oth Qian, Xin oth Dasari, Aravind oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:152 year:2017 day:10 month:11 pages:254-262 extent:9 https://doi.org/10.1016/j.compscitech.2017.09.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 152 2017 10 1110 254-262 9 |
| allfieldsGer |
10.1016/j.compscitech.2017.09.022 doi GBV00000000000390.pica (DE-627)ELV040643603 (ELSEVIER)S0266-3538(17)30555-9 DE-627 ger DE-627 rakwb eng Chen, Yu verfasserin aut Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Electrical properties Elsevier Functional composites Elsevier Polymer-matrix composites (PMCs) Elsevier Zhang, Hao-Bin oth Wang, Mu oth Qian, Xin oth Dasari, Aravind oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:152 year:2017 day:10 month:11 pages:254-262 extent:9 https://doi.org/10.1016/j.compscitech.2017.09.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 152 2017 10 1110 254-262 9 |
| allfieldsSound |
10.1016/j.compscitech.2017.09.022 doi GBV00000000000390.pica (DE-627)ELV040643603 (ELSEVIER)S0266-3538(17)30555-9 DE-627 ger DE-627 rakwb eng Chen, Yu verfasserin aut Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances 2017transfer abstract 9 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. Electrical properties Elsevier Functional composites Elsevier Polymer-matrix composites (PMCs) Elsevier Zhang, Hao-Bin oth Wang, Mu oth Qian, Xin oth Dasari, Aravind oth Yu, Zhong-Zhen oth Enthalten in Elsevier No title available an international journal Amsterdam [u.a.] (DE-627)ELV013958402 nnns volume:152 year:2017 day:10 month:11 pages:254-262 extent:9 https://doi.org/10.1016/j.compscitech.2017.09.022 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_40 AR 152 2017 10 1110 254-262 9 |
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Enthalten in No title available Amsterdam [u.a.] volume:152 year:2017 day:10 month:11 pages:254-262 extent:9 |
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Chen, Yu @@aut@@ Zhang, Hao-Bin @@oth@@ Wang, Mu @@oth@@ Qian, Xin @@oth@@ Dasari, Aravind @@oth@@ Yu, Zhong-Zhen @@oth@@ |
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The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. 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phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances |
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Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances |
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Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. |
| abstractGer |
Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. |
| abstract_unstemmed |
Highly porous graphene aerogels enhanced with phenolic resol resin are prepared by a hydrothermal synthesis followed by high-temperature annealing. The introduced phenolic resol resin and its pyrolysis derivative effectively combine the sheets together and thus the three-dimensional networks of the enhanced aerogels are well retained even after compounding with epoxy resin. The synthesized aerogels are highly efficient in endowing epoxy with high electrical conductivity, excellent electromagnetic interference (EMI) shielding efficiency and satisfactory mechanical reinforcement. With only 0.33 wt% of the annealed aerogel, its epoxy nanocomposite exhibits a high electrical conductivity of 73 S/m and an excellent EMI shielding effectiveness of 35 dB, which are among the best results for polymer nanocomposites with even higher loadings. Especially, the EMI shielding performance is comparable to or even higher than that of the nanocomposite filled with chemical vapor deposition-synthesized graphene foam. Furthermore, the aerogel also leads to notable 67% and 20.2% increases in flexural strength and flexural modulus, respectively. Therefore, the phenolic resin-enhanced graphene aerogel holds a great potential in producing high-performance polymer nanocomposites for EMI shielding application. |
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Phenolic resin-enhanced three-dimensional graphene aerogels and their epoxy nanocomposites with high mechanical and electromagnetic interference shielding performances |
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