Nano Energy, Год журнала: 2024, Номер 134, С. 110571 - 110571
Опубликована: Дек. 10, 2024
Язык: Английский
Polymer Composites, Год журнала: 2025, Номер unknown
Опубликована: Фев. 6, 2025
Abstract Silicon‐containing arylacetylene (PSA)‐based composites show excellent heat resistance and dielectric properties, making them highly promising for applications in the aerospace electronic information fields. However, low polarity of PSAs poor interfacial adhesion with fibers lead to weak mechanical properties their composites. In this study, a novel PSAs‐like heat‐resistant silane coupling agent (P‐SCA) was synthesized through Grignard reagent condensation reaction used modify surface quartz fiber (QF). Due special chemical structure P‐SCA, siloxanes P‐SCA can undergo dehydration silicon hydroxyl groups on cloths graft onto surface, while alkynes react resin, enhancing bonding by forming strong interlocking bonds. The composite prepared cloth treated 3.5 wt% ([email protected]%P‐SCA) shows that interlaminar shear strength (ILSS) flexural are 21.0 270.6 MPa at room temperature, respectively, which have increased 32.1% 63.2%, respectively. And 500°C, ILSS 9.3 131.7 MPa, increasing 44.3% 50.7%, QF@P‐SCA/PSA significantly improved maintaining resistance. Hightlights A synthesized. high temperature resistant interface is constructed agent. Mechanical occur interface. showed good elevated temperature.
Язык: Английский
Процитировано
1
Polymer Engineering and Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 8, 2025
Abstract With the rapid development of science and technology, there is an increasing demand for lightweight materials with excellent electromagnetic interference (EMI) shielding infrared stealth performance space applications. In this study, a series polyimide/silica (PI/SiO 2 ) aerogels were fabricated by blending, which dried using supercritical CO drying method. Then, PI/SiO composite carbonized to prepare carbon superior thermal insulation EMI properties. The contained mesopores enhanced interfacial resistance improved 69% when compared those samples without SiO . presence adjusted impedance matching aerogels, allowed more EM waves enter inside dissipate through multiple reflections, thereby achieving absorption‐dominant performance. This study proposed viable approach preparing PI‐based performance, show promising applications in aerospace related industries. Highlights introduction regulated microstructure aerogels. conductivity reached as low 0.10 W/mK 3 wt% aerogel was from 22.4 33.5 dB.
Язык: Английский
Процитировано
0
Polymers for Advanced Technologies, Год журнала: 2025, Номер 36(2)
Опубликована: Фев. 1, 2025
ABSTRACT Polymer composites have easy processability, low cost, and wide applicability. Moreover, arranging fillers within such polymer to form a heat transfer path plays crucial role in enhancing thermal conductivity. In this paper, were composed using boron nitride (BN), aluminum oxide (Al 2 O 3 ), reduced graphene (r‐GO), L‐ascorbic acid (L‐AA), epoxy resin (EP) (BN‐OH/Al /EP/r‐GO@L‐AA). To create BN‐OH/Al /EP spheres, Al was used as the core, with small amount of EP BN‐OH surrounding it ceramic spheres. An r‐GO@L‐AA aerogel formed by cross‐linking r‐GO L‐AA, followed freeze‐drying. The /EP/r‐GO@L‐AA fabricated hot‐pressing spheres aerogel. With vertical alignment BNs arranged according aerogel, composite achieved high conductivity 4.632 W/m K, tensile strength 65 MPa, insulating properties.
Язык: Английский
Процитировано
0
Polymer-Plastics Technology and Materials, Год журнала: 2025, Номер unknown, С. 1 - 32
Опубликована: Апрель 10, 2025
Язык: Английский
Процитировано
0
Nano Energy, Год журнала: 2024, Номер 134, С. 110571 - 110571
Опубликована: Дек. 10, 2024
Язык: Английский
Процитировано
0