{"title":"基于双动态网络的高强度可脱粘光固化胶","authors":"Kunpeng Zheng, Juntao Wang, Junyi Chen, Jingye Hao, Zetong Liu, Suli Xing, Jinshui Yang, Dingding Chen","doi":"10.1016/j.polymdegradstab.2025.111665","DOIUrl":null,"url":null,"abstract":"<div><div>The temporary fixation of precision devices during manufacturing demands adhesives capable of high efficiency and controlled debonding, while existing thermosetting adhesives face challenges in on-demand debonding due to irreversible covalent crosslinking. To address this dilemma, UV-curable polyurethane acrylate adhesive (DSPUA) integrating dual-dynamic networks of hydrogen bonds and disulfide bonds was developed. This synergy between dynamic networks effectively resolved the trade-off between adhesive strength and on-demand debonding capability. The dual-dynamic network provided strong and tough adhesive strength (5.88 MPa and 8.99 kN/m), surpasing that of existing UV-curable adhesives featuring controlled debonding. The disulfide bonds enabled rapid debonding at medium temperatures (complete detachment within 4 min at 90 °C). In addition, the DSPUA-2 adhesive also experienced a significant reduction in adhesive strength when exposed to ultraviolet light or in the presence of chemical reducing agents. This work paves the way for the design of high-performance and debondable adhesives, with significant implications for temporary fixation of precision components and material recycling.</div></div>","PeriodicalId":406,"journal":{"name":"Polymer Degradation and Stability","volume":"242 ","pages":"Article 111665"},"PeriodicalIF":7.4000,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"High-strength and debondable UV-curable adhesive based on dual-dynamic network\",\"authors\":\"Kunpeng Zheng, Juntao Wang, Junyi Chen, Jingye Hao, Zetong Liu, Suli Xing, Jinshui Yang, Dingding Chen\",\"doi\":\"10.1016/j.polymdegradstab.2025.111665\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The temporary fixation of precision devices during manufacturing demands adhesives capable of high efficiency and controlled debonding, while existing thermosetting adhesives face challenges in on-demand debonding due to irreversible covalent crosslinking. To address this dilemma, UV-curable polyurethane acrylate adhesive (DSPUA) integrating dual-dynamic networks of hydrogen bonds and disulfide bonds was developed. This synergy between dynamic networks effectively resolved the trade-off between adhesive strength and on-demand debonding capability. The dual-dynamic network provided strong and tough adhesive strength (5.88 MPa and 8.99 kN/m), surpasing that of existing UV-curable adhesives featuring controlled debonding. The disulfide bonds enabled rapid debonding at medium temperatures (complete detachment within 4 min at 90 °C). In addition, the DSPUA-2 adhesive also experienced a significant reduction in adhesive strength when exposed to ultraviolet light or in the presence of chemical reducing agents. This work paves the way for the design of high-performance and debondable adhesives, with significant implications for temporary fixation of precision components and material recycling.</div></div>\",\"PeriodicalId\":406,\"journal\":{\"name\":\"Polymer Degradation and Stability\",\"volume\":\"242 \",\"pages\":\"Article 111665\"},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2025-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polymer Degradation and Stability\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S014139102500494X\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Degradation and Stability","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S014139102500494X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
High-strength and debondable UV-curable adhesive based on dual-dynamic network
The temporary fixation of precision devices during manufacturing demands adhesives capable of high efficiency and controlled debonding, while existing thermosetting adhesives face challenges in on-demand debonding due to irreversible covalent crosslinking. To address this dilemma, UV-curable polyurethane acrylate adhesive (DSPUA) integrating dual-dynamic networks of hydrogen bonds and disulfide bonds was developed. This synergy between dynamic networks effectively resolved the trade-off between adhesive strength and on-demand debonding capability. The dual-dynamic network provided strong and tough adhesive strength (5.88 MPa and 8.99 kN/m), surpasing that of existing UV-curable adhesives featuring controlled debonding. The disulfide bonds enabled rapid debonding at medium temperatures (complete detachment within 4 min at 90 °C). In addition, the DSPUA-2 adhesive also experienced a significant reduction in adhesive strength when exposed to ultraviolet light or in the presence of chemical reducing agents. This work paves the way for the design of high-performance and debondable adhesives, with significant implications for temporary fixation of precision components and material recycling.
期刊介绍:
Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology.
Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal.
However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.