A functional polyurea elastomer material was synthesized from diphenyl-methane-diisocyanate and poly(1,4-butanediol) bis(4-aminobenzoate) by prepolymer method,and it was irradiated by γ-rays.The change law of microstructure morphology,quasi-static and dynamic mechanical properties of the samples before and after irradiation were studied.The results of infrared spectra showed that the qualified polyurea molecular structure was synthesized,and no new group appeared or disappeared after irradiation.After irradiation,it was found that with the increase of cumulative dose,the color of the specimen changed from light yellow to dark red,and the color change on the outer surface was more significant.Compared with the unirradiated specimens,the properties of the polyurea with cumulative irradiation dose of 60-150KGy were significantly improved,and the polyurea exhibited the mechanical characteristics of the transition from rubber state to glass state at different strain rates,which shown that the polyurea synthesized had good impact resistance and gamma ray irradiation resistance.
[1] 赵庆贵,于明磊,姜言刚,等.聚脲涂料在多领域的应用[J].弹性体,2018,28(6):74-76.
[2] 钟鑫,孙慧.喷涂聚脲弹性涂料及其应用领域[J].聚氨酯工业,2007,22(5):9-12.
[3] 彭舒舒,王水勇,李鸿远,等.核电厂除盐水箱聚脲防腐涂层应用[J].全面腐蚀控制,2014,28(11):37-39,76.
[4] 邵明坤,陈学永,汤振,等.辐照对橡胶老化作用的研究[J].橡胶科技,2019,17(10):545-551.
[5] 黄微波,李宝军,吕平.聚脲和聚氨酯(脲)的对比研究[J].新型建筑材料,2011,38(2):50-52.
[6] 周成飞,曹巍,翟彤,等.HEMA封端聚(氨酯-酰亚胺)的本体法合成及γ射线辐射效应[J].高分子材料科学与工程,2011,27(6):15-17,21.
[7] 王俊胜,刘丹,王国辉,等.不同辐照强度下阻燃聚氨酯泡沫的燃烧行为[J].高分子材料科学与工程,2013,29(7):64-67.
[8] Fan Jitang,Chen Ang.Studying a flexible polyurethane elastomer with improved impact-resistant performance[J].Polymers,2019,11(3):467.
[9] Shintani Hideharu,Kikuchi Hiroshi,Nakamura Akitada.Effects of gamma-ray irradiation on the change of characteristics of polyurethane[J].Polymer Degradation and Stability,1991,32(1):17-30.
[10] Ravat B,Gschwind R,Grivet M,et al.Electron irradiation of polyurethane:some FT-IR resultsand a comparison with a EGS4 simulation[J].Nuclear Instruments and Methods in Physics Research,2000,B160:499-504.
[11] Ravat B,Grivet M,Grohens Y,et al.Electron irradiation of polyesterurethanes:study of chemical and structural modifications using FT-IR,UV spectroscopy and GPC[J].Radiation Meas-Urements,2001,34(1-6):31-36.
[12] 刘雪莹,陈金周,段成金.PP和TPU的电离辐射效应[J].包装工程,2006(6):34-36,57.
[13] 吕佳琛.聚多巴胺纳米颗粒/聚氨酯复合材料的制备及其耐伽马辐照性能研究[D].太原:中北大学,2019.
[14] 肖肯,李文博.耐辐照环氧聚氨酯涂料的研制[J].现代涂料与涂装,2020,23(2):5-8.
[15] 王娜,李炳奇,谢贵堂,等.PPG/PTMG基单组分聚脲的制备及性能研究[J].化工新型材料,2020,48(10):143-145,150.
[16] 房鑫,徐英男,侯传金,等.聚脲的制备及性能研究[J].化工新型材料,2019,47(3):203-206.
[17] 张成彬,向平,刘波,等.环氧树脂E-51改性聚氨酯弹性体的制备与性能研究[J].化工新型材料,2017,45(4):65-67.
[18] Bruce P Bardes.ASM metals handbook(Vol 08)[M] State of Ohio:ASM International,2002,1027-1191.
[19] 能源行业核电标准化技术委员会.NB/T20133.2—2012,压水堆核电厂设施设备防护涂层规范[S].北京:国家能源局,2012.
[20] Guo Hui,Guo Weiguo,Amirkhizi A V,et al.Experimental investigation and modeling of mechanical behaviors of polyurea over wide ranges of strain rates and temperatures[J].Polymer Testing,2016,53:234-244.
[21] Guo Hui,Guo Weiguo,Amirkhizi A V.Constitutive modeling of the tensile and compressive deformation behavior of polyurea over a wide range of strain rates[J].Construction and Building Materials,2017,150:851-859.
[22] 吴冲.玻璃纤维/聚脲复合材料的微观结构与力学性能研究[D].哈尔滨:哈尔滨工业大学,2013.
[23] Wang Hao,Deng Ximin,Wu Haijun,et al.Investigating the dynamic mechanical behaviors of polyurea through experimentation and modeling[J].Defence Technology,2019,15(6):875-884.
[24] Roland C M,Twigg J N,Vu Y,et al.High strain rate mechanical behavior of polyurea[J].Polymer,2006,48(2):574-578.
[25] Jongmin Shim,Dirk Mohr.Using split Hopkinson pressure bars to perform large strain compression tests on polyurea at low,intermediate and high strain rates[J].International Journal of Impact Engineering,2008,36(9):1116-1127.
[26] Liu Qiang,Chen Pengwan,Guo Yansong,et al.Mechanical behavior and failure mechanism of polyurea nanocomposites under quasi-static and dynamic compressive loading[J].Defence Technology,2021,17(2):495-504.
[27] Jongmin Shim,Dirk Mohr.Rate dependent finite strain constitutive model of polyurea[J].International Journal of Plasticity,2010,27(6):868-886.
[28] Yi J,Boyce M C,Lee G F,et al.Large deformation rate-dependent stress-strain behavior of polyurea and polyurethanes[J].Polymer,2006,47(1):319-329.
[29] Sarva S S,Deschanel S,Boyce M C,et al.Stress-strain behavior of a polyurea and a polyurethane from low to high strain rates[J].Polymer,2007(48):2208-2213.
[30] Pathak J A,Twigg J N,Nugent K E,et al.Structure evolution in a polyurea segmented block copolymer because of mechanical deformation[J].Macromolecules,2008,41(20):7543-7548.
