{"title":"同时具有热稳定性、透明度和薄壁阻燃性的含溴共聚聚碳酸酯","authors":"","doi":"10.1016/j.polymer.2024.127532","DOIUrl":null,"url":null,"abstract":"<div><p>The incorporation of traditional low molecule bromine flame retardants can enhance the flame retardancy of polycarbonate (PC), yet their poor compatibility with PC impairs its transparency and mechanical properties. Here, brominated polycarbonate (B<sub>50</sub>PC) was synthesized by interfacial polycondensation method using bisphenol A, tetrabromobisphenol A, and triphosgene. The number average molecular weight (<em>M</em><sub><em>n</em></sub>) of B<sub>50</sub>PC reached 14,600, and compared to the low molecule bromine flame retardant tetrabromobisphenol A (TBBPA), its initial decomposition temperature increased by 38.7 % under air atmosphere. The PC composites containing 5 wt% B<sub>50</sub>PC achieved the V-0 rating in the UL-94 test, with LOI increased by 10.3 %. At the same time, the peak heat release rate (PHRR) was decreased by 28.6 % and the ignition time (TTI) was delayed by 21.3 %. Compared with that of samples with TBBPA, the composite with the same amount of B<sub>50</sub>PC maintained the original elongation at break of PC and the transmittance remained at 84.9 %. In summary, the composites with B<sub>50</sub>PC maintains outstanding transparency and mechanical properties while enhancing the flame retardancy. This work has developed a high molecular bromine flame retardant that combines flame retardancy and transparency, offering a strategy for expanding the application of PC in the electronics, construction, and aerospace sectors.</p></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Bromine-containing copolymer polycarbonate for simultaneous thermal stability, transparency, and thin-wall flame-retardant polycarbonate\",\"authors\":\"\",\"doi\":\"10.1016/j.polymer.2024.127532\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The incorporation of traditional low molecule bromine flame retardants can enhance the flame retardancy of polycarbonate (PC), yet their poor compatibility with PC impairs its transparency and mechanical properties. Here, brominated polycarbonate (B<sub>50</sub>PC) was synthesized by interfacial polycondensation method using bisphenol A, tetrabromobisphenol A, and triphosgene. The number average molecular weight (<em>M</em><sub><em>n</em></sub>) of B<sub>50</sub>PC reached 14,600, and compared to the low molecule bromine flame retardant tetrabromobisphenol A (TBBPA), its initial decomposition temperature increased by 38.7 % under air atmosphere. The PC composites containing 5 wt% B<sub>50</sub>PC achieved the V-0 rating in the UL-94 test, with LOI increased by 10.3 %. At the same time, the peak heat release rate (PHRR) was decreased by 28.6 % and the ignition time (TTI) was delayed by 21.3 %. Compared with that of samples with TBBPA, the composite with the same amount of B<sub>50</sub>PC maintained the original elongation at break of PC and the transmittance remained at 84.9 %. In summary, the composites with B<sub>50</sub>PC maintains outstanding transparency and mechanical properties while enhancing the flame retardancy. This work has developed a high molecular bromine flame retardant that combines flame retardancy and transparency, offering a strategy for expanding the application of PC in the electronics, construction, and aerospace sectors.</p></div>\",\"PeriodicalId\":405,\"journal\":{\"name\":\"Polymer\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-08-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polymer\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0032386124008681\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"POLYMER SCIENCE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032386124008681","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
摘要
传统的低分子溴系阻燃剂可以提高聚碳酸酯(PC)的阻燃性,但它们与 PC 的相容性较差,会影响 PC 的透明度和机械性能。本文采用界面缩聚法,利用双酚 A、四溴双酚 A 和三光气合成了溴化聚碳酸酯(BPC)。BPC 的平均分子量()达到 14 600,与低分子溴系阻燃剂四溴双酚 A(TBBPA)相比,其在空气环境下的初始分解温度提高了 38.7%。含有 5 wt% BPC 的 PC 复合材料在 UL-94 测试中达到了 V-0 级,LOI 增加了 10.3%。同时,峰值热释放率(PHRR)降低了 28.6%,点火时间(TTI)延迟了 21.3%。与添加了 TBBPA 的样品相比,添加了等量 BPC 的复合材料保持了 PC 原有的断裂伸长率,透射率保持在 84.9%。总之,含有 BPC 的复合材料在提高阻燃性的同时,还保持了出色的透明度和机械性能。这项研究开发出了一种兼具阻燃性和透明度的高分子溴系阻燃剂,为扩大 PC 在电子、建筑和航空航天领域的应用提供了一种策略。
Bromine-containing copolymer polycarbonate for simultaneous thermal stability, transparency, and thin-wall flame-retardant polycarbonate
The incorporation of traditional low molecule bromine flame retardants can enhance the flame retardancy of polycarbonate (PC), yet their poor compatibility with PC impairs its transparency and mechanical properties. Here, brominated polycarbonate (B50PC) was synthesized by interfacial polycondensation method using bisphenol A, tetrabromobisphenol A, and triphosgene. The number average molecular weight (Mn) of B50PC reached 14,600, and compared to the low molecule bromine flame retardant tetrabromobisphenol A (TBBPA), its initial decomposition temperature increased by 38.7 % under air atmosphere. The PC composites containing 5 wt% B50PC achieved the V-0 rating in the UL-94 test, with LOI increased by 10.3 %. At the same time, the peak heat release rate (PHRR) was decreased by 28.6 % and the ignition time (TTI) was delayed by 21.3 %. Compared with that of samples with TBBPA, the composite with the same amount of B50PC maintained the original elongation at break of PC and the transmittance remained at 84.9 %. In summary, the composites with B50PC maintains outstanding transparency and mechanical properties while enhancing the flame retardancy. This work has developed a high molecular bromine flame retardant that combines flame retardancy and transparency, offering a strategy for expanding the application of PC in the electronics, construction, and aerospace sectors.
期刊介绍:
Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics.
The main scope is covered but not limited to the following core areas:
Polymer Materials
Nanocomposites and hybrid nanomaterials
Polymer blends, films, fibres, networks and porous materials
Physical Characterization
Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films
Polymer Engineering
Advanced multiscale processing methods
Polymer Synthesis, Modification and Self-assembly
Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization
Technological Applications
Polymers for energy generation and storage
Polymer membranes for separation technology
Polymers for opto- and microelectronics.