Heritage Science, Год журнала: 2024, Номер 12(1)
Опубликована: Сен. 19, 2024
Язык: Английский
Polymer Composites, Год журнала: 2024, Номер 45(8), С. 7673 - 7688
Опубликована: Март 11, 2024
Abstract Nine poly(phthalazinone ether ketone) resins were designed and synthesized using three bisphenol four halogenated monomers. Poly(phthalazinone (PPBEK) sulfone (PPBESK) demonstrated liquid oxygen compatibility (LOC), with PPBEK maintaining its LOC even after 20 days of immersion in oxygen. The mechanism the polymers presence force‐thermal‐chemical multi‐energy fields was analyzed techniques such as thermal analysis‐infrared‐gas chromatography (TGA‐IR‐GC), thermogravimetric analysis (TGA), x‐ray photoelectron spectroscopy (XPS). Carbon fiber (CF) reinforced composites fabricated PPBESK matrices, CF‐PPBEK successfully achieving LOC. microcracking resistance mechanical properties investigated at 90 K. interaction between elucidated, providing theoretical guidance an experimental foundation for application resin matrix storage tanks. Highlights ether) meticulously synthesized. ·PPBEK exhibited excellent compatibility. Composites low‐temperature performance heat resistance.
Язык: Английский
Процитировано
3
Ceramics International, Год журнала: 2025, Номер unknown
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Polymers, Год журнала: 2024, Номер 16(19), С. 2752 - 2752
Опубликована: Сен. 29, 2024
In the foreseeable future, development of petroleum-based polymeric materials may be limited, owing to gradual consumption disposable resources and increasing emphasis on environmental protection policies. Therefore, it is necessary focus introducing environmentally friendly renewable biobased as a substitute for feed stocks in preparation different types industrially important polymers. Plant polyphenols, kind natural aromatic biomolecule, exist widely some plant species. Benefiting from their special macromolecular structure, high reactivity, broad abundance, polyphenols are potent candidates replace dwindling monomers derived synthesizing high-quality materials. this review, most related innovative methods elaborating novel addressed. After brief historical overview, classification, structural characteristics, reactivity summarized detail. addition, interesting works concerning chemical modifications polymerization techniques also discussed. Importantly, main pathways create polyphenol-based organic/organic–inorganic well properties possible applications systematically described. We believe that review could offer helpful references designing multifunctional polyphenolic
Язык: Английский
Процитировано
1
Polymer Composites, Год журнала: 2024, Номер unknown
Опубликована: Окт. 26, 2024
Abstract In this paper, carboxyl‐terminated nitrile rubber (CTBN) and Nano cerium oxide (n‐CeO 2 ) were used to toughen epoxy resin (EP), the effects of toughening agents on mechanical thermal properties EP studied. Orthogonal experiments determined that ideal toughener proportions are 20 wt% CTBN 1 n‐CeO , under which demonstrated superior characteristics. The combined application significantly enhanced resin's properties, surpassing individual particle toughening. Compared with pure EP, impact, flexural, tensile strengths resin‐cured product synergistically toughened by increased 462%, 136%, 110%, respectively, flexural Young's moduli 38% 35%, respectively. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), electron microscopy (SEM) characterize cured resin. results indicate incorporating reduces reaction activation energy, thereby accelerating curing facilitating its progression. addition nanoparticles enhances maximum weight loss temperature resin, improving stability. particles create a uniform phase separation structure within enhancing toughness strength. Furthermore, impact fracture mode transitions from brittle tough fracture, demonstrating significant effect. This provides an effective method for modification EP. Highlights synergistic use incorporation improves stability accelerates rate. inclusion transforms fracture.
Язык: Английский
Процитировано
1
Heritage Science, Год журнала: 2024, Номер 12(1)
Опубликована: Сен. 19, 2024
Язык: Английский
Процитировано
0