Xuan Wu, Longjie Shi, Yang Zhang, Yier Wang, Chenchen Li, Yuhan Dou, Chaoran Li, Jiafeng Lu, Hong Dong, Zhirong Qu, Yanjiang Song, Chuanwu
{"title":"用于高性能紫外光固化聚氨酯的丁基/醚端杂化聚硅氧烷:电子封装中的超低介电常数和超疏水性","authors":"Xuan Wu, Longjie Shi, Yang Zhang, Yier Wang, Chenchen Li, Yuhan Dou, Chaoran Li, Jiafeng Lu, Hong Dong, Zhirong Qu, Yanjiang Song, Chuanwu","doi":"10.1016/j.reactfunctpolym.2025.106483","DOIUrl":null,"url":null,"abstract":"<div><div>To address the limitations of conventional polyurethane (PU) in electronic packaging (e.g., poor hydrophobicity, dielectric properties, and thermal stability), three mono-dihydroxyalkyl-terminated polysiloxanes (TMPME-PDMS, <em>M</em><sub>NMR</sub> = 995–3318 g/mol) featuring a butyl/ether hybrid terminal structure were synthesized via hydrosilylation and chemically grafted into acrylate-end-capped PU. The resulting silicone-modified polyurethane acrylates (Si-PUAs) were UV-cured with a 3 wt% photoinitiator (HMPA/HCHMP = 1:1). Relative to pure PUA, the hydrophobicity and thermal stability were significantly enhanced, together with reduced dielectric properties. With a mere 1 wt% TMPME-PDMS (<em>M</em><sub>NMR</sub> = 3318 g/mol), the water contact angle was increased from 79.34° of pristine PU to 118.09°. When incorporating 10 wt% TMPME-PDMS (<em>M</em><sub>NMR</sub> = 2218 g/mol), the soft-segment decomposition temperature (<em>T</em>gs) was elevated to 412.60 °C, which was 19.20 °C higher than unmodified PU. At 14.2 GHz, 10 wt% TMPME-PDMS (<em>M</em><sub>NMR</sub> = 3318 g/mol) reduced the dielectric constant to 2.67, 6.32 % lower than PU. The molecular weight (<em>M</em><sub>NMR</sub>) and dosage of TMPME-PDMS critically governed microphase separation, crosslinking density, and surface migration, enabling tunable performance. This work provides a scalable strategy for high-performance UV-curable coatings in advanced electronics packaging.</div></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"217 ","pages":"Article 106483"},"PeriodicalIF":5.1000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Butyl/ether hybrid-terminated polysiloxanes for high-performance UV-curable polyurethanes: Ultra-low dielectric constant and superhydrophobicity in electronic packaging\",\"authors\":\"Xuan Wu, Longjie Shi, Yang Zhang, Yier Wang, Chenchen Li, Yuhan Dou, Chaoran Li, Jiafeng Lu, Hong Dong, Zhirong Qu, Yanjiang Song, Chuanwu\",\"doi\":\"10.1016/j.reactfunctpolym.2025.106483\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>To address the limitations of conventional polyurethane (PU) in electronic packaging (e.g., poor hydrophobicity, dielectric properties, and thermal stability), three mono-dihydroxyalkyl-terminated polysiloxanes (TMPME-PDMS, <em>M</em><sub>NMR</sub> = 995–3318 g/mol) featuring a butyl/ether hybrid terminal structure were synthesized via hydrosilylation and chemically grafted into acrylate-end-capped PU. The resulting silicone-modified polyurethane acrylates (Si-PUAs) were UV-cured with a 3 wt% photoinitiator (HMPA/HCHMP = 1:1). Relative to pure PUA, the hydrophobicity and thermal stability were significantly enhanced, together with reduced dielectric properties. With a mere 1 wt% TMPME-PDMS (<em>M</em><sub>NMR</sub> = 3318 g/mol), the water contact angle was increased from 79.34° of pristine PU to 118.09°. When incorporating 10 wt% TMPME-PDMS (<em>M</em><sub>NMR</sub> = 2218 g/mol), the soft-segment decomposition temperature (<em>T</em>gs) was elevated to 412.60 °C, which was 19.20 °C higher than unmodified PU. At 14.2 GHz, 10 wt% TMPME-PDMS (<em>M</em><sub>NMR</sub> = 3318 g/mol) reduced the dielectric constant to 2.67, 6.32 % lower than PU. The molecular weight (<em>M</em><sub>NMR</sub>) and dosage of TMPME-PDMS critically governed microphase separation, crosslinking density, and surface migration, enabling tunable performance. This work provides a scalable strategy for high-performance UV-curable coatings in advanced electronics packaging.</div></div>\",\"PeriodicalId\":20916,\"journal\":{\"name\":\"Reactive & Functional Polymers\",\"volume\":\"217 \",\"pages\":\"Article 106483\"},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2025-09-17\",\"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/S1381514825003359\",\"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/S1381514825003359","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}
Butyl/ether hybrid-terminated polysiloxanes for high-performance UV-curable polyurethanes: Ultra-low dielectric constant and superhydrophobicity in electronic packaging
To address the limitations of conventional polyurethane (PU) in electronic packaging (e.g., poor hydrophobicity, dielectric properties, and thermal stability), three mono-dihydroxyalkyl-terminated polysiloxanes (TMPME-PDMS, MNMR = 995–3318 g/mol) featuring a butyl/ether hybrid terminal structure were synthesized via hydrosilylation and chemically grafted into acrylate-end-capped PU. The resulting silicone-modified polyurethane acrylates (Si-PUAs) were UV-cured with a 3 wt% photoinitiator (HMPA/HCHMP = 1:1). Relative to pure PUA, the hydrophobicity and thermal stability were significantly enhanced, together with reduced dielectric properties. With a mere 1 wt% TMPME-PDMS (MNMR = 3318 g/mol), the water contact angle was increased from 79.34° of pristine PU to 118.09°. When incorporating 10 wt% TMPME-PDMS (MNMR = 2218 g/mol), the soft-segment decomposition temperature (Tgs) was elevated to 412.60 °C, which was 19.20 °C higher than unmodified PU. At 14.2 GHz, 10 wt% TMPME-PDMS (MNMR = 3318 g/mol) reduced the dielectric constant to 2.67, 6.32 % lower than PU. The molecular weight (MNMR) and dosage of TMPME-PDMS critically governed microphase separation, crosslinking density, and surface migration, enabling tunable performance. This work provides a scalable strategy for high-performance UV-curable coatings in advanced electronics packaging.
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.