European Polymer Journal, Год журнала: 2024, Номер unknown, С. 113685 - 113685
Опубликована: Дек. 1, 2024
Язык: Английский
Macromolecular Rapid Communications, Год журнала: 2024, Номер unknown
Опубликована: Дек. 8, 2024
Abstract Side‐chain liquid‐crystal epoxy polymers (SCLCEPs) are valued for their unique properties, which combine LC side chains with epoxide‐based polyether main ordered molecular arrangements. They have high thermal conductivity and optical properties due to low polydispersity crystallinity. Achieving optimal in SCLCEPs involves addressing factors such as mesogen nature, polymer design, alignment within the structure. Balancing these enhances suitability heat dissipation advanced materials. In this study, a polyethylene glycol backbone laterally arranged mesogens synthesized via anionic ring opening of mesogenic epoxides phases. These monomers, feature biphenyl attached glycidyloxy ether different alkyl chain lengths on other side, is designed facilitate self‐assembly interaction. The resulting exhibited higher crystallinity phases than monomers. Notably, because exceeds 0.48 W·m −1 K increases shortened lengths, reaching 0.57 . This research expands applications fields requiring enhanced properties.
Язык: Английский
Процитировано
2
Macromolecules, Год журнала: 2024, Номер unknown
Опубликована: Дек. 26, 2024
In response to the limitations imposed on microelectronics industry by electronic crosstalk losses and signal delays, as well rapid accumulation of heat, intrinsically low dielectric high thermal conductivity materials are in urgent demand. Here, a self-curable biobased silane precursor (M@KH590) with biphenyl unit was synthesized. A series films (magnolol polysiloxane (MPSOs)) were prepared using simple sol–gel film conversion annealing modulated intermolecular forces molecular structure. The red-shift UV–vis absorption indicated that larger π–π conjugated system established. As result, through-plane MPSO-140 0.601 W·m–1·K–1, which more than three times pure material. Meanwhile, exhibited excellent intrinsic properties (Dk = 2.52, Df 0.000572, f 100 MHz). This mainly attributed reduction highly polar substances groups difficulty polarizing system. Based rigid units cross-link density, tensile strength modulus 17.42 MPa 2.61 GPa, respectively, showing prominent mechanical properties. addition, water resistance (water contact angle 72 h 104.8° 0.19%, respectively) electrical insulation, great potential for practical applications. study broadened way toward overcoming contradiction between simultaneously introducing large free volume modulating structure effective way.
Язык: Английский
Процитировано
2
Polymer Chemistry, Год журнала: 2022, Номер 14(5), С. 644 - 650
Опубликована: Дек. 23, 2022
A new liquid crystal epoxies (LCEs) system based on the twin mesogenic core and imidazole curing agent is investigated. The LCEs records high thermal conductivity (0.49 W m −1 K ) which are highly affected by microscopic orientation.
Язык: Английский
Процитировано
10
Chinese Journal of Polymer Science, Год журнала: 2024, Номер 42(10), С. 1459 - 1469
Опубликована: Авг. 20, 2024
Язык: Английский
Процитировано
1
European Polymer Journal, Год журнала: 2024, Номер unknown, С. 113685 - 113685
Опубликована: Дек. 1, 2024
Язык: Английский
Процитировано
0