{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T17:30:21Z","timestamp":1790271021442,"version":"4.1.0"},"reference-count":38,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2023,8,20]],"date-time":"2023-08-20T00:00:00Z","timestamp":1692489600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["51873109"],"award-info":[{"award-number":["51873109"]}]},{"name":"National Natural Science Foundation of China","award":["XLYC1907198"],"award-info":[{"award-number":["XLYC1907198"]}]},{"name":"National Natural Science Foundation of China","award":["XLYC1907019"],"award-info":[{"award-number":["XLYC1907019"]}]},{"name":"National Natural Science Foundation of China","award":["2019JH1\/10100028"],"award-info":[{"award-number":["2019JH1\/10100028"]}]},{"name":"National Natural Science Foundation of China","award":["JYT2020022"],"award-info":[{"award-number":["JYT2020022"]}]},{"name":"Xingliao Talents Program of Liaoning Province","award":["51873109"],"award-info":[{"award-number":["51873109"]}]},{"name":"Xingliao Talents Program of Liaoning Province","award":["XLYC1907198"],"award-info":[{"award-number":["XLYC1907198"]}]},{"name":"Xingliao Talents Program of Liaoning Province","award":["XLYC1907019"],"award-info":[{"award-number":["XLYC1907019"]}]},{"name":"Xingliao Talents Program of Liaoning Province","award":["2019JH1\/10100028"],"award-info":[{"award-number":["2019JH1\/10100028"]}]},{"name":"Xingliao Talents Program of Liaoning Province","award":["JYT2020022"],"award-info":[{"award-number":["JYT2020022"]}]},{"name":"Science and Technology Major Project of Liaoning Province","award":["51873109"],"award-info":[{"award-number":["51873109"]}]},{"name":"Science and Technology Major Project of Liaoning Province","award":["XLYC1907198"],"award-info":[{"award-number":["XLYC1907198"]}]},{"name":"Science and Technology Major Project of Liaoning Province","award":["XLYC1907019"],"award-info":[{"award-number":["XLYC1907019"]}]},{"name":"Science and Technology Major Project of Liaoning Province","award":["2019JH1\/10100028"],"award-info":[{"award-number":["2019JH1\/10100028"]}]},{"name":"Science and Technology Major Project of Liaoning Province","award":["JYT2020022"],"award-info":[{"award-number":["JYT2020022"]}]},{"DOI":"10.13039\/501100013099","name":"Scientific Research Fund of Liaoning Provincial Education Department","doi-asserted-by":"publisher","award":["51873109"],"award-info":[{"award-number":["51873109"]}],"id":[{"id":"10.13039\/501100013099","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100013099","name":"Scientific Research Fund of Liaoning Provincial Education Department","doi-asserted-by":"publisher","award":["XLYC1907198"],"award-info":[{"award-number":["XLYC1907198"]}],"id":[{"id":"10.13039\/501100013099","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100013099","name":"Scientific Research Fund of Liaoning Provincial Education Department","doi-asserted-by":"publisher","award":["XLYC1907019"],"award-info":[{"award-number":["XLYC1907019"]}],"id":[{"id":"10.13039\/501100013099","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100013099","name":"Scientific Research Fund of Liaoning Provincial Education Department","doi-asserted-by":"publisher","award":["2019JH1\/10100028"],"award-info":[{"award-number":["2019JH1\/10100028"]}],"id":[{"id":"10.13039\/501100013099","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100013099","name":"Scientific Research Fund of Liaoning Provincial Education Department","doi-asserted-by":"publisher","award":["JYT2020022"],"award-info":[{"award-number":["JYT2020022"]}],"id":[{"id":"10.13039\/501100013099","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Benzoxazine resins are widely employed in a variety of applications due to their exceptional heat resistance and treatment properties. However, traditional benzoxazine resins still confront hurdles in today\u2019s engineering applications, such as their inability to provide long-term service in high-temperature settings and their inadequate toughness. In this study, four alkyne-functionalized benzoxazines with phthalide side groups and cyano groups of varying molecular weights were produced. Fourier transform infrared spectroscopy (FT-IR) and hydrogen nuclear magnetic resonance spectroscopy (1H-NMR) were used to characterize the resin structure, and differential scanning calorimetry (DSC) was used to investigate the thermal curing kinetics at different warming rates. The apparent activation energy was 116.9 kJ\/mol. In-situ FT-IR was used to investigate the cure mechanism. Dynamic mechanical analysis (DMA) was used to evaluate the gelation time of BOZ series resins at various temperatures, and the curing process was designed by combining the results with DSC. The Tg of the composites made using BOZ-1N21 as the matrix was 336 \u00b0C, which was much higher than the Tg of the BP-a resin made with aniline, phenolphthalein, and formaldehyde (Tg = 251 \u00b0C). As a result, the resin system is expected to be employed in applications requiring high-temperature resistance and toughness.<\/jats:p>","DOI":"10.3390\/polym15163478","type":"journal-article","created":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T01:38:31Z","timestamp":1692581911000},"page":"3478","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["The Performance and Synthesis of Alkynyl\u2212Functionalized Benzoxazine Containing Phthalide Side Groups and Cyano Groups with Different Molecular Weights"],"prefix":"10.3390","volume":"15","author":[{"given":"Nianjun","family":"Kang","sequence":"first","affiliation":[{"name":"Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Yang","sequence":"additional","affiliation":[{"name":"Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuhai","family":"Xiong","sequence":"additional","affiliation":[{"name":"Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anchang","family":"Han","sequence":"additional","affiliation":[{"name":"Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rong","family":"Ren","sequence":"additional","affiliation":[{"name":"Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Wang","sequence":"additional","affiliation":[{"name":"Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, Shenyang Aerospace University, Shenyang 110136, China"},{"name":"School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"337","DOI":"10.1016\/j.eurpolymj.2016.06.018","article-title":"Chavicol benzoxazine: Ultrahigh Tg biobased thermoset with tunable extended network","volume":"81","author":"Dumas","year":"2016","journal-title":"Eur. 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