Heterostructured Graphene@Silica@Iron Phenylphosphinate for Fire‐Retardant, Strong, Thermally Conductive Yet Electrically Insulated Epoxy Nanocomposites

Small, Год журнала: 2024, Номер 20(31)

Опубликована: Март 1, 2024

Abstract The portfolio of extraordinary fire retardancy, mechanical properties, dielectric/electric insulating performances, and thermal conductivity (λ) is essential for the practical applications epoxy resin (EP) in high‐end industries. To date, it remains a great challenge to achieve such performanceportfolio EP due their different even mutually exclusive governing mechanisms. Herein, multifunctional additive (G@SiO 2 @FeHP) fabricated by situ immobilization silica (SiO ) iron phenylphosphinate (FeHP) onto graphene (G) surface. Benefiting from synergistic effect G, SiO FeHP, addition 1.0 wt% G@SiO @FeHP enables vertical burning (UL‐94) V‐0 rating limiting oxygen index (LOI) 30.5%. Besides, both heat release smoke generation as‐prepared nanocomposite are significantly suppressed condensed‐phase function @FeHP. Adding also brings about 44.5%, 61.1%, 42.3% enhancements tensile strength, modulus, impact strength nanocomposite. Moreover, exhibits well‐preserved dielectric electric properties enhanced λ . This work provides an integrated strategy development materials, thus facilitating high‐performance applications.

Язык: Английский

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Fast char formation induced by POSS confining Co-MOF hollow prisms in epoxy composites with mitigated heat and smoke hazards

Chemical Engineering Journal, Год журнала: 2023, Номер 474, С. 145682 - 145682

Опубликована: Авг. 28, 2023

Язык: Английский

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Hollow Superstructure In Situ Assembled by Single‐Layer Janus Nanospheres toward Electromagnetic Shielding Flame‐Retardant Polyurea Composites

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

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Enhancing char formation of flame retardant epoxy composites: Onigiri-like ZIF-67 modification with carboxymethyl β-cyclodextrin crosslinking

Carbohydrate Polymers, Год журнала: 2024, Номер 333, С. 121980 - 121980

Опубликована: Фев. 25, 2024

Язык: Английский

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Interface engineering of MXene containing phosphorus towards for enhancing the flame retardance and toughness of epoxy resins

Progress in Organic Coatings, Год журнала: 2024, Номер 191, С. 108414 - 108414

Опубликована: Апрель 3, 2024

Язык: Английский

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Novel bio-based nanosheets: Improving the fire safety, electromagnetic shielding and mechanical properties of polylactic acid

Composites Part A Applied Science and Manufacturing, Год журнала: 2024, Номер 179, С. 108044 - 108044

Опубликована: Янв. 26, 2024

Язык: Английский

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Structure of Metal–Organic Frameworks Eco-Modulated by Acid–Base Balance toward Biobased Flame Retardant in Polyurea Composites

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

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Poorly-/well-dispersed Fe3O4: Abnormal influence on electromagnetic wave absorption behavior of high-mechanical performance polyurea

Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152833 - 152833

Опубликована: Июнь 5, 2024

Язык: Английский

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Multi-element hybrid flame retardants balance flame retardancy and mechanical performance of epoxy coatings

Progress in Organic Coatings, Год журнала: 2024, Номер 188, С. 108219 - 108219

Опубликована: Янв. 15, 2024

Язык: Английский

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Zeolitic imidazolate frameworks-based flame retardants for polymeric materials

Materials Today Chemistry, Год журнала: 2024, Номер 37, С. 102015 - 102015

Опубликована: Март 20, 2024

Язык: Английский

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