OALib Journal期刊
键合铅离子的聚酰亚胺材料的制备及辐射屏蔽性能研究
DOI: 10.11777/j.issn1000-3304.2015.15061
Keywords: 聚酰亚胺 ,铅离子 ,复合材料 ,γ射线 ,辐射屏蔽
Abstract:
通过离子交换法合成了对氨基苯甲酸铅盐ABA(Pb);以ABA(Pb)和2,2-双[4-(4-氨基苯氧基)苯基]丙烷(BAPP)为二胺单体、2,2-双[4-(3,4-二羧基苯氧基)苯基]丙烷二酐(BPADA)为二酐单体,N-甲基-2-吡咯烷酮(NMP)为溶剂,采用共缩聚两步法,先后合成了主链含铅离子的聚酰胺酸PAA(Pb)和聚酰亚胺PI(Pb).采用傅里叶变换红外(FTIR)光谱、核磁共振(1H-NMR)光谱和元素分析对ABA(Pb)、PAA(Pb)和PI(Pb)进行了结构表征;应用X射线衍射(XRD)、热重分析(TGA)、力学测试和γ能谱法对PI(Pb)的结构、热稳定性、力学性能及辐射屏蔽性能进行了测试.结果表明,与纯PI材料和同等铅含量、物理掺杂的PI-Pb(NO3)2样品相比,制备的PI(Pb)材料对60Co(1.33MeV)、60Co(1.17MeV)和137Cs(0.662MeV)的γ射线具有较大的辐射屏蔽率和较小的半值层厚度,其辐射屏蔽性能要明显优于纯PI材料和同等铅含量、物理掺杂的PI-Pb(NO3)2样品.主要原因在于PI(Pb)中铅离子是通过化学键直接键合到聚酰亚胺主链中的,实现了物理掺杂方法不能达到的铅离子均匀分散,使得γ射线与铅元素发生相互作用的几率增大,从而提高了PI(Pb)对γ射线的辐射屏蔽效果.PI(Pb)材料不仅具有良好的热稳定性和较好的力学性能,而且对γ射线的辐射屏蔽性能优良,有望成为一种具有良好应用前景的轻质γ射线辐射屏蔽材料.
References
[1] 19 Xia Weiqing(夏蔚青),Xiao Caihua(肖才华),Jia Xiaole(贾小乐),Wang Lei(王雷).Chem J Chinese U(高等化学学报),2013,13(11):2655~2660 [2] 20 Lee S J,Kwon S K,Cho W J,Ha C S.J Appl Polym Sci,1999,73(9):1697~1705 [3] 21 Chan W K.Coord Chem Rev,2007,251(17-20):2104~2118 [4] 22 Zeng W X,Qiu W L,Liu J S,Yang X J,Lu L D,Wang X.Polymer,1995,36(19):3761~3765 [5] 23 Qiu W L,Yang Y,Yang X J,Lu L D,Wang X.J Appl Polym Sci,1997,63(13):1827~1831 [6] 24 Yang X J,Wang X,Chen D Y,Yang J,Lu L D,Sun X Q,He G Y,Chen J.J Appl Polym Sci,2000,77(11):2363~2369 [7] 25 Matsuda H,Takechi S.J Polym Sci Part A:Polym Chem,1990,28(7):1895~1908 [8] 26 Matsuda H,Takechi S.J Polym Sci Part A:Polym Chem,1991,29(1):83~91 [9] 27 Xing Qiyi(邢其毅),Pei Weiwei(裴伟伟),Xu Ruiqiu(徐瑞秋),Pei Jian(裴坚).Organic Chemistry(基础有机化学),3rd ed(第三版).Beijing(北京):Senior Education Press(高等教育出版社),2009.182~183 [10] 28 Qiu W L,Yang Y,Yang X J,Lu L D,Wang X.J Appl Polym Sci,1996,59(9):1437~1442 [11] 29 Shu Yasha(舒亚莎),Zhou Jiashan(周佳珊),Zhao Shasha(赵莎莎),Zou Kaidian(邹开典),Yu Cheng'e(于承娥),Wei Jiadi(魏佳迪),Xu Cheng(徐程).J Colloid Polym(胶体与聚合物),2011,29(1):15~18 [12] 30 Ding Mengxian(丁孟贤).Polyimide:Chemistry,Relationship between Structure and Properties,and Materials(聚酰亚胺——化学、结构与性能的关系及材料).2nd ed(第2版).Beijing(北京):Science Press(科学出版社),2012.221~247 [13] 1 Amritphale S S, Anshul A,Chandra N,Ramakrishnan N.J Eur Ceram Soc,2007,27(4):1945~1951 [14] 2 Qi Zhangnian(祈章年).Radition Protection and Monitoring of Manned Spaceflight(载人航天的辐射防护与检测).Beijing(北京):National Defence Industry Press(国防工业出版社),2003.11~12 [15] 3 Singh H,Singh K,Gerward L,Singh K,Sahota H S,Nathuram R.Nucl Instrum Methods Phys Res Sect B,2003,207(3):257~262 [16] 4 Fan G H,Geng L,Wang G S,Feng Y C.Mater Design,2009,30(3):862~866 [17] 5 Zhang Guimin(张桂敏),Guo Jianmei(郭建梅),Zhou Chengfei(周成飞).Journal of South-Central University for Nationalities(Natural Science Edition)(中南民族大学学报(自然科学版)),2004,123(4):30~32 [18] 6 Hu H S,Xu H,Zhang G G.Atomic Energy Sci Tech,2005,39(4):363~366 [19] 7 Ruck D M.Nucl Instrum Methods Phys Res Sect B,2000,166-167:602~609 [20] 8 Liu Xiankun(刘显坤),Liu Ying(刘颖),Tang Jie(唐杰).Mater Rev(材料导报),2006,20(6):22~25 [21] 9 Zhang Yu(张瑜),Dai Yaodong(戴耀东),Li Jiangsu(李江苏),Sun Hao(孙浩),Chang Shuquan(常树全).Acta Polymerica Sinica(高分子学报),2010,(5):582~587 [22] 10 Abdo A E S,Ali M A M,Ismail M R.Radiat Phys Chem,2003,66(3):185~195 [23] 11 Lin Xuemin(林学敏),Jiang Pingping(蒋平平),Chen Jianbo(陈建波).J Saf Environ(环境与安全学报),2008,8(2):148~152 [24] 12 An Jun(安骏),Wu Haixia(吴海霞),Xin Yinchang(辛寅昌).Eng Plast Appl(工程塑料应用),2004,32(12):14~17 [25] 13 Hussain R A.J Islamic Acad Sc,1997,10(3):81~84 [26] 14 Ahmed A F,Antar E M.Polym-Plast Technol,2014,53(2):173~180 [27] 15 Dong Wenmin(董文敏),Dong Zhihua(董志华),Xu Dongtai(徐东太),Liu Li(刘力).China Synth Rubber Ind(合成橡胶工业),2009,32(4):313~316 [28] 16 Li Jiangsu(李江苏),Zhang Yu(张瑜),Sun Hao(孙浩),Chang Shuquan(常树全),Dai Yaodong(戴耀东).Acta Mater Compos Sin(复合材料学报),2011,28(1):43~49 [29] 17 Zhang Yali(张亚丽),Shen Xiaohong(沈孝红).Eng Plast Appl(工程塑料应用),2010,38(2):20~22 [30] 18 Xia Senlin(夏森林),Yi Longfei(易龙飞),Sun Zhen(孙振),Xiang Jieran(向诘然),Wang Yinghan(汪映寒).Acta Polymerica Sinica(高分子学报),2013,(11):1376~1383
Full-Text
Contact Us
service@oalib.com
QQ:3279437679
WhatsApp +8615387084133
