{"title":"评估金属有机框架和胺功能化金属有机框架/环氧树脂/Novolac 复合材料的热性能和操作温度：比较研究","authors":"","doi":"10.1016/j.tsep.2024.102905","DOIUrl":null,"url":null,"abstract":"<div><p>Metal–organic frameworks (MOFs) are known for their excellent physical and thermal properties. In the current paper, the use of thermally stable MOFs in the preparation of epoxy composites were studied and their tolerance to high temperatures was investigated in terms of degradation kinetics and operating temperature. UiO-66 and UiO-66-NH<sub>2</sub> were used to prepare a series of novel composites from epoxy resin and Novolac (EU and EUN samples, respectively). The effect of the amine groups presented in the UiO-66-NH<sub>2</sub> structure on the thermal stability was studied using decomposition activation energy (E<sub>a</sub>). The Flynn–Wall–Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Ozawa models were used to study the E<sub>a</sub>, where it was increased from 166.7 kJ·mol<sup>−1</sup> in neat epoxy samples to 238.58 kJ·mol<sup>−1</sup> in EUN samples by using only 0.5 Phr of the UiO-66-NH<sub>2</sub>. Moreover, the operating temperature of the prepared composites was calculated and compared for four sets of heating rates. Up to 10 % mass loss, the mean operating temperature for using the neat epoxy, EU, and EUN composites for 20,000 h, was found to be 184.17 ℃, 246.26 ℃, and 247.73 ℃, respectively. This approach can pave the way for using MOFs as fillers in preparing innovative thermoset composites.</p></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Assessment of the thermal properties and operation temperature for metal–organic frameworks and amine-functionalized metal–organic frameworks/epoxy/novolac composites: A comparative study\",\"authors\":\"\",\"doi\":\"10.1016/j.tsep.2024.102905\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Metal–organic frameworks (MOFs) are known for their excellent physical and thermal properties. In the current paper, the use of thermally stable MOFs in the preparation of epoxy composites were studied and their tolerance to high temperatures was investigated in terms of degradation kinetics and operating temperature. UiO-66 and UiO-66-NH<sub>2</sub> were used to prepare a series of novel composites from epoxy resin and Novolac (EU and EUN samples, respectively). The effect of the amine groups presented in the UiO-66-NH<sub>2</sub> structure on the thermal stability was studied using decomposition activation energy (E<sub>a</sub>). The Flynn–Wall–Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Ozawa models were used to study the E<sub>a</sub>, where it was increased from 166.7 kJ·mol<sup>−1</sup> in neat epoxy samples to 238.58 kJ·mol<sup>−1</sup> in EUN samples by using only 0.5 Phr of the UiO-66-NH<sub>2</sub>. Moreover, the operating temperature of the prepared composites was calculated and compared for four sets of heating rates. Up to 10 % mass loss, the mean operating temperature for using the neat epoxy, EU, and EUN composites for 20,000 h, was found to be 184.17 ℃, 246.26 ℃, and 247.73 ℃, respectively. This approach can pave the way for using MOFs as fillers in preparing innovative thermoset composites.</p></div>\",\"PeriodicalId\":23062,\"journal\":{\"name\":\"Thermal Science and Engineering Progress\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Thermal Science and Engineering Progress\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2451904924005237\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904924005237","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Assessment of the thermal properties and operation temperature for metal–organic frameworks and amine-functionalized metal–organic frameworks/epoxy/novolac composites: A comparative study
Metal–organic frameworks (MOFs) are known for their excellent physical and thermal properties. In the current paper, the use of thermally stable MOFs in the preparation of epoxy composites were studied and their tolerance to high temperatures was investigated in terms of degradation kinetics and operating temperature. UiO-66 and UiO-66-NH2 were used to prepare a series of novel composites from epoxy resin and Novolac (EU and EUN samples, respectively). The effect of the amine groups presented in the UiO-66-NH2 structure on the thermal stability was studied using decomposition activation energy (Ea). The Flynn–Wall–Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Ozawa models were used to study the Ea, where it was increased from 166.7 kJ·mol−1 in neat epoxy samples to 238.58 kJ·mol−1 in EUN samples by using only 0.5 Phr of the UiO-66-NH2. Moreover, the operating temperature of the prepared composites was calculated and compared for four sets of heating rates. Up to 10 % mass loss, the mean operating temperature for using the neat epoxy, EU, and EUN composites for 20,000 h, was found to be 184.17 ℃, 246.26 ℃, and 247.73 ℃, respectively. This approach can pave the way for using MOFs as fillers in preparing innovative thermoset composites.
期刊介绍：
Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.
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