Composites Communications, Год журнала: 2025, Номер unknown, С. 102259 - 102259
Опубликована: Янв. 1, 2025
Язык: Английский
Chemical Engineering Journal, Год журнала: 2023, Номер 468, С. 143653 - 143653
Опубликована: Май 23, 2023
Язык: Английский
Процитировано
102
Small, Год журнала: 2023, Номер 20(12)
Опубликована: Ноя. 9, 2023
Abstract A dodecahedral superstructure consisting of a single layer Janus spheres containing ZIF‐67 nanodots is prepared by in situ polymerization, with and bio‐based phytic acid (PA) as templates dopants. It used to improve the flame retardant, electromagnetic (EMI) shielding, thermal conductivity properties polyurea (PUA). By adding 5 wt% polyaniline@cobalt phytate‐2.0 (PANI@Co‐PA‐2.0), peak heat release rate smoke production are reduced 54.9 59.9%, respectively. The CO 2 also decreased 46.2 53.1%, decrease absorption intensity aliphatic aromatic volatiles observed. fire safety PUA greatly improved. In addition, PUA/PANI@Co‐PA‐2.0 exhibits an EMI shielding capability 22.4 dB help graphene oxide, which confirms possibility material application field shielding. filler increases tensile strength matrix 6.3 MPa, composite obtains good conductivity. This work provides viable method for preparation flame‐retardant, conductive, refractory substrate.
Язык: Английский
Процитировано
45
Journal of Colloid and Interface Science, Год журнала: 2023, Номер 654, С. 235 - 245
Опубликована: Окт. 11, 2023
Язык: Английский
Процитировано
43
Coordination Chemistry Reviews, Год журнала: 2024, Номер 523, С. 216256 - 216256
Опубликована: Окт. 22, 2024
Язык: Английский
Процитировано
37
Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 148997 - 148997
Опубликована: Янв. 22, 2024
Язык: Английский
Процитировано
32
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(12), С. 15227 - 15241
Опубликована: Март 18, 2024
Biobased-functionalized metal–organic frameworks (Bio-FUN-MOFs) stand out from the crowd of candidates in flame-retardant field due to their multipathway mechanisms and green synthesis processes. However, exploring designing Bio-FUN-MOFs tend counteract problem compromising advantages MOFs themselves, which inevitably results a waste resources. Herein, strategy are ecologically regulated through acid–base balance is presented for controllable preparation by two birds with one stone, i.e., higher element loading retention more MOF structures. Specifically, buffer layer created on periphery ZIF-67 weak etching biobased alkali arginine resist excessive phytic acid when phosphorus source preserve integrity internal crystals as much possible. As proof concept, was almost completely etched absence arginine. The acid-functionalized yolk@shell structure (ZIF@Arg–Co–PA) obtained this strategy, flame retardant, reduces fire hazards polyurea composites. At only 5 wt % loading, ZIF@Arg–Co–PA imparted composites limiting oxygen index 23.2%, peaks heat release rate, total release, smoke production were reduced 43.8, 32.3, 34.3%, respectively, compared neat polyurea. Additionally, prepared have acceptable mechanical properties. This work will shed light advanced structural design polymer excellent safety, especially environmentally friendly efficient retardants.
Язык: Английский
Процитировано
32
Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152833 - 152833
Опубликована: Июнь 5, 2024
Язык: Английский
Процитировано
26
Small, Год журнала: 2024, Номер 20(43)
Опубликована: Июнь 21, 2024
The single-layer MXene fully demonstrates the advantages of 2D materials, especially catalytic, conductive, and mechanical properties. However, high energy consumption low efficiency faced by in divestiture process are still challenges that need to be solved urgently. In this article, dimension mismatch collaborative stripping strategies skillfully combined easily realize transformation from multi-layer single layer. addition, functionalized MXene@SiC@polyaniline (MXene@SiC@PANI) nano-hybrid materials used as fillers improve thermal conductivity, flame retardant, antibacterial properties thermoplastic polyurethane (TPU). surface temperature TPU/MXene@SiC@PANI composites increased 33.4 °C 59.8 within 10 s. TPU against Escherichia coli Staphylococcus aureus is 69.6% 88.9%, respectively. Compared with pure TPU, peak heat release rate total reduced 71.4% 34.6%, flame-retardant mechanism hybrid systematically discussed. It worth noting introduction PANI enhances compatibility between filler polymer, effectively maintaining itself. This work provides a convenient method for multi-functional practical application TPU.
Язык: Английский
Процитировано
24
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(6), С. 7617 - 7630
Опубликована: Фев. 5, 2024
Up to now, metal–organic frameworks (MOFs) with open nanostructures have shown outstanding capabilities in trapping smoke particles compared the original MOFs. However, only a few MOF-based strategies been reported synthesize hierarchical porous cages thus far, which are mainly restricted environmentally unfriendly wet-chemical liquid methods. Herein, as proof-of-concept, gas-steamed framework approach was designed fabricate series of cheeselike porosity. Briefly, zeolitic imidazolate framework-67 (ZIF-67) and phytic acid were employed precursor etchant, respectively. Abandoning conventional method, coordination bond ZIF-67 cleaved by acidic steam, forming an high specific surface area structure. The universality this method also confirmed selection different etchants. Impressively, they show fume-toxic adsorption capability labyrinth effects based on abundant complex channels. At 5 wt % loading, Co3O4@open cage-2 (Co3O4@OZC-2) imparted polyurea (PUA) composites 21.2% limiting oxygen index, peak heat release rate, total release, production reduced around 37.5, 25.5, 40.4%, respectively, neat PUA. This work will shed light advanced structural design polymer fire safety, especially suppression performance, so obtain more feasible applications.
Язык: Английский
Процитировано
23
Nature Communications, Год журнала: 2025, Номер 16(1)
Опубликована: Янв. 2, 2025
With the development of nanotechnology, nano-functional units different dimensions, morphologies, and sizes exhibit potential for efficient microwave absorption (MA) performance. However, multi-unit coupling enhancement mechanism triggered by alignment orientation has been neglected, hindering further absorbing materials (MAMs). In this paper, two typical ZIF-derived nanomaterials are self-assembled into two-dimensional ordered polyhedral superstructures simple ice template method. The distinctive dielectric-sensitive behaviors after self-assembling arrays. modified 2D not only inherit atomic-level doping well-designed shell structure, but also amplify loss properties to realize multi-scale modulated MA response. Satisfactory performance in C, X Ku bands is finally achieved. particular, ultra-broadband bandwidth (EAB) 6.41 GHz realized at 1.82 mm thickness. Our work demonstrates array-induced multiscale polarization behavior, providing a direction fully utilize wave-absorbing functional units. This delves effects nano-units arrays on electromagnetic shielding. Polyhedral allow good X, bands, with
Язык: Английский
Процитировано
2