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摘要
聚苯砜(PPSU)是一种综合性能优异的特种工程塑料。以3,3',5,5'-四甲基-4,4'-联苯二酚(TMBP)和4,4'-二氯二苯砜(DCDPS)作为聚合单体,经缩聚反应合成了四甲基联苯二酚型聚苯砜(TMPPSU),通过傅里叶变换红外光谱仪、核磁共振氢谱仪、X射线衍射仪等表征了TMPPSU的结构。采用差示扫描量热分析、热重分析等多种测试方法对样品的热性能、介电性能和力学性能进行测试。结果表明,合成的TMPPSU数均分子量(Mn)与市售的联苯二酚型聚苯砜树脂(DBPPSU)相当,相对分子质量分布较窄(Mn=50030,聚合物分散性指数为1.69)。与DBPPSU相比,TMPPSU的玻璃化转变温度提高至277℃,在氮气中5%热分解温度降低至418.2℃,热膨胀系数降低至 64.75×10-6/℃;此外,TMPPSU刚性增强,柔性降低,拉伸强度提高至96.36MPa,断裂伸长率降低至7.02%。在10GHz条件下,TMPPSU的介电常数和介电损耗角正切值分别为3.23和0.00668。
Abstract
Polyphenylene sulfone (PPSU) is a special engineering plastic with excellent comprehensive properties.Tetramethylbiphenol polyphenylsulfone (TMPPSU) was synthesized by polycondensation reaction using 3,3',5,5'-tetramethyl-4,4'-biphenol (TMBP) and 4,4'-dichlorodiphenylsulfone (DCDPS) as monomers.The structure of TMPPSU was characterized by Fourier transform infrared analysis (FT-IR),nuclear magnetic resonance (1H-NMR) and X-ray diffraction (XRD).The thermal properties,dielectric properties and mechanical properties of the samples were tested by differential scanning calorimetry,thermogravimetric analysis and other test methods.The results showed that the number-average molecular weight (Mn) of the synthesized TMPPSU was comparable to that of the commercially available biphenyl-type polyphenylsulfone (DBPPSU) resin,and the relative molecular weight distribution was narrow (Mn=50030,polymer dispersion index=1.69).Compared with DBPPSU,the glass transition temperature of TMPPSU increased to 277℃,the 5% thermal decomposition temperature in nitrogen decreased to 418.2℃,and the thermal expansion coefficient decreased to 64.75×10-6/℃.In addition,the rigidity of TMPPSU was enhanced,the flexibility was reduced,the tensile strength was increased to 96.36MPa,and the elongation at break reduced to 7.02%.At 10GHz,the dielectric constant and dielectric loss tangent of TMPPSU were 3.23 and 0.00668,respectively.
关键词
四甲基联苯二酚型聚苯砜
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3,3',5,5'-四甲基-4,4'-联苯二酚
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玻璃化转变温度
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介电常数
Key words
tetramethylbiphenol polyphenylsulfone
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3,3',5,5'-tetramethyl-4,4'-biphenol
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glass transition temperature
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dielectric constant
四甲基联苯二酚型聚苯砜的合成与表征[J].
化工新型材料, 2025, 53(4): 101-105 DOI:10.19817/j.cnki.issn1006-3536.2025.04.003
[1] 刘朝艳.2018—2019年世界塑料工业进展(Ⅱ)[J].塑料工业,2020,48(4):1-14.
[2] Tashvigh A,Luo L,Chung T S,et al.A novel ionically cross-linked sulfonated polyphenylsulfone (sPPSU) membrane for organic solvent nanofiltration(OSN)[J].Journal of Membrane Science,2018,545:221-228.
[3] 石婉玲,张守海,步肖曼,等.含二侧苯基杂萘联苯聚芳醚砜的合成与性能[J].高分子材料科学与工程,2019,35(3):32-36.
[4] 黎杰良,高红军,孙学科,等.聚苯砜树脂聚合脱水工艺对比[J].工程塑料应用,2022,50(1):54-59.
[5] Singh S P,Li Y,Zhang J,et al.Sulfur-doped laser-induced po-rous graphene derived from polysulfone-class polymers and membranes[J].ACS Nano,2018,12(1):289-297.
[6] Jansen J C,Darvishmanesh S,Tasselli F,et al.Influence of the blend composition on the properties and separation perfor-mance of novel solvent resistant polyphenyl-sulfone/polyimide nanofiltration membranes[J].Journal of Membrane Science,2013,447(22):107-118.
[7] Alam J,Shukla A K,Arockiasamy L,et al.Scale design of dual-layer sulfonated polyphenylsulfone hollow fiber membranes for nanofiltration[J].Materials Science and Technology,2023,714(13):2-17.
[8] 陈骁,赵建青,袁彦超,等.砜聚合物特种工程塑料的合成、性能与应用[J].广东化工,2013,40(18):66-67;49.
[9] Plisko T V,Burts K S,Bildyukevich A V.Development of high flux nanocomposite polyphenylsulfone/oxidized multiwalled carbon nanotubes membranes for ultrafiltration using the systems with critical solution temperatures[J].Membranes,2022,12(8):724.
[10] Nor N A M,Mohamed M A,Jaafar J.Modified sulfonated polyphenylsulfone proton exchange membrane with enhanced fuel cell performance:a review[J].Journal of Industrial and Engineering Chemistry,2022,116:32-59.
[11] 刘真.侧链含偶氮聚芳醚砜的制备与光响应性研究[D].沈阳:辽宁大学,2023.
[12] Faye A,Furtos A,Brisson,et al.Synthesis of high molecular weight polyetheret-hersulfone-allyl copolymers of controlled glass transition[J].Macromolecular Chemistry and Physics,2016,217(19):2125-2138.
[13] 吴高洁.低热膨胀系数高透过率热塑性聚酰亚胺树脂设计合成研究[D].北京:北京化工大学,2023.
[14] Feng F,Liang C,Wu J,et al.Polyphenylsulfone (PPSU)-based copolymeric membranes:effects of chemical structure and content on gas permeation and separation[J].Polymers,2021,13(16):2745.
[15] 皇甫梦鸽,李一丹,张燕,等.面向5G应用需求的低介电高分子材料研究与应用进展[J].绝缘材料,2020,53(8):1-9.
[16] 大野大典.電子材料向け熱硬化性樹脂の開発動向[J].ネットワークポリマー,2017,38(6):277-284.
基金资助
广东省重点领域研发计划项目(2020B0101340005);广东省科学院建设国内一流研究机构行动专项资金项目(2019GDASYL-0501013)
