开发用于热稳定和防潮应用的低温固化混合苯并恶嗪-环氧树脂

IF 4.5 3区 工程技术 Q1 CHEMISTRY, APPLIED
{"title":"开发用于热稳定和防潮应用的低温固化混合苯并恶嗪-环氧树脂","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106032","DOIUrl":null,"url":null,"abstract":"<div><p>New type of diallyl bisphenol-A (ABA) based benzoxazines and benzoxazine resins tailored with epoxy groups for low-temperature curing, have been developed using various curatives for high performance applications<strong>.</strong> The molecular structure of the synthesized compounds was analyzed using HRMS, <sup>1</sup>H NMR, <sup>13</sup>C NMR and ATR-FTIR analytical techniques. The cure behavior (T<sub>p</sub>) of benzoxazine (Bz) and benz-epoxy (Bz-Ep) resin in the absence and presence of different nature of curatives were studied using DSC to evaluate their applicability for advanced composite applications. The values of T<sub>p</sub> obtained are 279 °C, 190 °C and 247 °C for ABA-a, ABA-dmapa and ABA-ipa respectively. The cure behavior has been further lowered by converting ally group present in the benzoxazine has been transformed into epoxy groups by appropriate mechanism. The curing (T<sub>p</sub>) temperature observed for hybrid ABA-a-Ep, ABA-dmapa-Ep and ABA-ipa-Ep benz-epoxy resins are 151 °C, 226 °C and 160 °C, 187 °C and 150 °C, 211 °C respectively. The T<sub>p</sub> of different benz-epoxy resin systems studied in the presence of catalysts were found to be in the range of 101-155 °C. With a T<sub>max</sub> of 484 °C and a char yield of 43 %, poly(ABA-a) exhibits impressive thermal stability when compared to other synthesized polybenzoxazines. Further, incorporating various curatives into the benz-epoxy matrix enhances its thermal stability and char yield compared to the neat matrices. Additionally, the developed samples exhibit excellent moisture resistant (0.75 %) and hydrophobic nature with the highest contact angle value of 152<sup>o</sup> for poly(ABA-a). The findings from various studies indicate that the hybrid benz-epoxy resins demonstrate characteristics such as low-temperature curability, thermal stability, hydrophobicity. These results render them appropriate for a diverse array of high-performance industrial and engineering uses.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development of low temperature cure hybrid benzoxazine-epoxy resins for thermally stable and moisture resistant applications\",\"authors\":\"\",\"doi\":\"10.1016/j.reactfunctpolym.2024.106032\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>New type of diallyl bisphenol-A (ABA) based benzoxazines and benzoxazine resins tailored with epoxy groups for low-temperature curing, have been developed using various curatives for high performance applications<strong>.</strong> The molecular structure of the synthesized compounds was analyzed using HRMS, <sup>1</sup>H NMR, <sup>13</sup>C NMR and ATR-FTIR analytical techniques. The cure behavior (T<sub>p</sub>) of benzoxazine (Bz) and benz-epoxy (Bz-Ep) resin in the absence and presence of different nature of curatives were studied using DSC to evaluate their applicability for advanced composite applications. The values of T<sub>p</sub> obtained are 279 °C, 190 °C and 247 °C for ABA-a, ABA-dmapa and ABA-ipa respectively. The cure behavior has been further lowered by converting ally group present in the benzoxazine has been transformed into epoxy groups by appropriate mechanism. The curing (T<sub>p</sub>) temperature observed for hybrid ABA-a-Ep, ABA-dmapa-Ep and ABA-ipa-Ep benz-epoxy resins are 151 °C, 226 °C and 160 °C, 187 °C and 150 °C, 211 °C respectively. The T<sub>p</sub> of different benz-epoxy resin systems studied in the presence of catalysts were found to be in the range of 101-155 °C. With a T<sub>max</sub> of 484 °C and a char yield of 43 %, poly(ABA-a) exhibits impressive thermal stability when compared to other synthesized polybenzoxazines. Further, incorporating various curatives into the benz-epoxy matrix enhances its thermal stability and char yield compared to the neat matrices. Additionally, the developed samples exhibit excellent moisture resistant (0.75 %) and hydrophobic nature with the highest contact angle value of 152<sup>o</sup> for poly(ABA-a). The findings from various studies indicate that the hybrid benz-epoxy resins demonstrate characteristics such as low-temperature curability, thermal stability, hydrophobicity. These results render them appropriate for a diverse array of high-performance industrial and engineering uses.</p></div>\",\"PeriodicalId\":20916,\"journal\":{\"name\":\"Reactive & Functional Polymers\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.5000,\"publicationDate\":\"2024-08-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reactive & Functional Polymers\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1381514824002074\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactive & Functional Polymers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1381514824002074","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0

摘要

利用各种固化剂开发出了新型二烯丙基双酚-A(ABA)基苯并恶嗪和带有环氧基团的苯并恶嗪树脂,可用于低温固化以获得高性能应用。使用 HRMS、1H NMR、13C NMR 和 ATR-FTIR 分析技术分析了合成化合物的分子结构。使用 DSC 研究了苯并恶嗪(Bz)和苯并环氧(Bz-Ep)树脂在没有和有不同性质的固化剂的情况下的固化行为(Tp),以评估它们在高级复合材料应用中的适用性。ABA-a、ABA-dmapa 和 ABA-ipa 的 Tp 值分别为 279°C、190°C 和 247°C。通过适当的机制将苯并恶嗪中的烯丙基转化为环氧基,进一步降低了固化性能。混合 ABA-a-Ep、ABA-dmapa-Ep 和 ABA-ipa-Ep 苯系环氧树脂的固化(Tp)温度分别为 151 ℃、226 ℃、160 ℃、187 ℃ 和 150 ℃、211 ℃。研究发现,在催化剂存在的情况下,不同苯环氧树脂体系的 Tp 范围为 101-155 ℃。与其他合成的聚苯并恶嗪相比,聚(ABA-a)的最高温度为 484 ℃,炭化率为 43%,具有出色的热稳定性。此外,与纯净基质相比,在苯环氧基质中加入各种固化剂可提高其热稳定性和炭化率。此外,所开发的样品还具有出色的防潮性(0.75%)和疏水性,聚(ABA-a) 的最高接触角值为 152o。各种研究结果表明,混合苯环氧树脂具有低温固化性、热稳定性和疏水性等特点。这些结果使它们适用于各种高性能工业和工程用途。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Development of low temperature cure hybrid benzoxazine-epoxy resins for thermally stable and moisture resistant applications

Development of low temperature cure hybrid benzoxazine-epoxy resins for thermally stable and moisture resistant applications

New type of diallyl bisphenol-A (ABA) based benzoxazines and benzoxazine resins tailored with epoxy groups for low-temperature curing, have been developed using various curatives for high performance applications. The molecular structure of the synthesized compounds was analyzed using HRMS, 1H NMR, 13C NMR and ATR-FTIR analytical techniques. The cure behavior (Tp) of benzoxazine (Bz) and benz-epoxy (Bz-Ep) resin in the absence and presence of different nature of curatives were studied using DSC to evaluate their applicability for advanced composite applications. The values of Tp obtained are 279 °C, 190 °C and 247 °C for ABA-a, ABA-dmapa and ABA-ipa respectively. The cure behavior has been further lowered by converting ally group present in the benzoxazine has been transformed into epoxy groups by appropriate mechanism. The curing (Tp) temperature observed for hybrid ABA-a-Ep, ABA-dmapa-Ep and ABA-ipa-Ep benz-epoxy resins are 151 °C, 226 °C and 160 °C, 187 °C and 150 °C, 211 °C respectively. The Tp of different benz-epoxy resin systems studied in the presence of catalysts were found to be in the range of 101-155 °C. With a Tmax of 484 °C and a char yield of 43 %, poly(ABA-a) exhibits impressive thermal stability when compared to other synthesized polybenzoxazines. Further, incorporating various curatives into the benz-epoxy matrix enhances its thermal stability and char yield compared to the neat matrices. Additionally, the developed samples exhibit excellent moisture resistant (0.75 %) and hydrophobic nature with the highest contact angle value of 152o for poly(ABA-a). The findings from various studies indicate that the hybrid benz-epoxy resins demonstrate characteristics such as low-temperature curability, thermal stability, hydrophobicity. These results render them appropriate for a diverse array of high-performance industrial and engineering uses.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Reactive & Functional Polymers
Reactive & Functional Polymers 工程技术-高分子科学
CiteScore
8.90
自引率
5.90%
发文量
259
审稿时长
27 days
期刊介绍: Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信