Bangwei Wan , Yong Yuan , Yang Yang , Rongxin Guo , Xiaotao Yu , Xuan Wu
{"title":"双荷层蜘蛛网增强导电弹性体复合材料的力电响应:实验与分子模拟","authors":"Bangwei Wan , Yong Yuan , Yang Yang , Rongxin Guo , Xiaotao Yu , Xuan Wu","doi":"10.1016/j.compositesa.2025.109175","DOIUrl":null,"url":null,"abstract":"<div><div>Conductive elastomers are widely used in flexible electronics for real-time deformation monitoring through their resistance response signals. However, conventional conductive elastomers often exhibit shoulder peak effects in these signals, significantly compromising the stability of the monitoring process. In this study, the linear cross-linked structure of the elastomer (SR) was transformed into a spiderweb-like network(SRHT) using polymethylhydrosiloxane (PMS). Meanwhile, anionic sodium dodecyl sulfate (SDS) and cationic tetradecyltrimethylammonium bromide (TTAB) were introduced to form a double-charge layer on the surface of multi-walled carbon nanotubes (MWCNT), enabling the construction of a spiderweb-like conductive elastomer with a double-charge layer (ASR). This structure generated a synergistic mechanism of electrostatic repulsion and spatial potential resistance, effectively preventing agglomeration in SRHT. Experimental results showed that ASR reduced the resistance response hysteresis area by 36.79 %, eliminating the shoulder peak effect in the resistive response signal. A combination of experimental analysis and molecular dynamics (MD) simulations was used to investigate the origin of the shoulder peak effect and its suppression mechanism. Additionally, ASR exhibited enhanced mechanical properties, with tensile strength and elongation at break increasing by 49.93 % and 62.8 %, respectively. The material demonstrated excellent strain-sensing performance, achieving a high gauge factor (GF) of 2390.29 and a response time of 222 ms. ASR has great application prospects in aerospace, flexible electronics, intelligent monitoring and other fields.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"198 ","pages":"Article 109175"},"PeriodicalIF":8.1000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Force-electric response of conductive elastomer composites reinforced with double-charged layer spider webs: experiments and molecular simulations\",\"authors\":\"Bangwei Wan , Yong Yuan , Yang Yang , Rongxin Guo , Xiaotao Yu , Xuan Wu\",\"doi\":\"10.1016/j.compositesa.2025.109175\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Conductive elastomers are widely used in flexible electronics for real-time deformation monitoring through their resistance response signals. However, conventional conductive elastomers often exhibit shoulder peak effects in these signals, significantly compromising the stability of the monitoring process. In this study, the linear cross-linked structure of the elastomer (SR) was transformed into a spiderweb-like network(SRHT) using polymethylhydrosiloxane (PMS). Meanwhile, anionic sodium dodecyl sulfate (SDS) and cationic tetradecyltrimethylammonium bromide (TTAB) were introduced to form a double-charge layer on the surface of multi-walled carbon nanotubes (MWCNT), enabling the construction of a spiderweb-like conductive elastomer with a double-charge layer (ASR). This structure generated a synergistic mechanism of electrostatic repulsion and spatial potential resistance, effectively preventing agglomeration in SRHT. Experimental results showed that ASR reduced the resistance response hysteresis area by 36.79 %, eliminating the shoulder peak effect in the resistive response signal. A combination of experimental analysis and molecular dynamics (MD) simulations was used to investigate the origin of the shoulder peak effect and its suppression mechanism. Additionally, ASR exhibited enhanced mechanical properties, with tensile strength and elongation at break increasing by 49.93 % and 62.8 %, respectively. The material demonstrated excellent strain-sensing performance, achieving a high gauge factor (GF) of 2390.29 and a response time of 222 ms. ASR has great application prospects in aerospace, flexible electronics, intelligent monitoring and other fields.</div></div>\",\"PeriodicalId\":282,\"journal\":{\"name\":\"Composites Part A: Applied Science and Manufacturing\",\"volume\":\"198 \",\"pages\":\"Article 109175\"},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2025-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Composites Part A: Applied Science and Manufacturing\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1359835X25004695\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MANUFACTURING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part A: Applied Science and Manufacturing","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359835X25004695","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
Force-electric response of conductive elastomer composites reinforced with double-charged layer spider webs: experiments and molecular simulations
Conductive elastomers are widely used in flexible electronics for real-time deformation monitoring through their resistance response signals. However, conventional conductive elastomers often exhibit shoulder peak effects in these signals, significantly compromising the stability of the monitoring process. In this study, the linear cross-linked structure of the elastomer (SR) was transformed into a spiderweb-like network(SRHT) using polymethylhydrosiloxane (PMS). Meanwhile, anionic sodium dodecyl sulfate (SDS) and cationic tetradecyltrimethylammonium bromide (TTAB) were introduced to form a double-charge layer on the surface of multi-walled carbon nanotubes (MWCNT), enabling the construction of a spiderweb-like conductive elastomer with a double-charge layer (ASR). This structure generated a synergistic mechanism of electrostatic repulsion and spatial potential resistance, effectively preventing agglomeration in SRHT. Experimental results showed that ASR reduced the resistance response hysteresis area by 36.79 %, eliminating the shoulder peak effect in the resistive response signal. A combination of experimental analysis and molecular dynamics (MD) simulations was used to investigate the origin of the shoulder peak effect and its suppression mechanism. Additionally, ASR exhibited enhanced mechanical properties, with tensile strength and elongation at break increasing by 49.93 % and 62.8 %, respectively. The material demonstrated excellent strain-sensing performance, achieving a high gauge factor (GF) of 2390.29 and a response time of 222 ms. ASR has great application prospects in aerospace, flexible electronics, intelligent monitoring and other fields.
期刊介绍:
Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.