东华大学材料科学与工程学院,纤维材料改性国家重点实验室;宁夏泰和芳纶纤维有限责任公司;泰和新材集团股份有限公司;
聚对苯二甲酰对苯二胺(PPTA)纤维具有优异的力学性能、耐化学腐蚀性能以及阻燃性能,在航空航天、国防、民用等领域得到了广泛应用,是一种新型战略性材料。对4种不同规格的对位芳纶的力学性能、相对分子质量、聚集态结构以及纤维表面及内部缺陷进行研究,建立纤维结构、缺陷与性能之间的关系。结果表明:在具有相同化学分子结构的前提下,聚合物相对分子质量是影响纤维力学性能的重要因素之一,随着相对分子质量的增加,纤维的强度和模量增加。对位芳纶的拉伸强度主要与其结晶度、取向度、表面缺陷以及内部微孔缺陷有关,其中结晶度和微孔缺陷最为重要。纤维的模量主要与纤维的取向度有关,结晶度及纤维内外部缺陷对纤维模量的影响较小。
683 | 1 | 199 |
下载次数 | 被引频次 | 阅读次数 |
[1] 赵开荣,康帅,宋向阳,等.聚对苯二甲酰对苯二胺的制备和纺丝技术[J].产业用纺织品,2021,39(4):6-11.ZHAO K R,KANG S,SONG X Y,et al.Preparation and spinning technology of the poly (p-phenylene terephthalamide)[J].Technical Textiles,2021,39(4):6-11.
[2] 高建.聚对苯二甲酰对苯二胺在国内的应用发展[J].云南化工,2018,45(8):189-190.GAO J.Application development of poly(p-phenylene terephthalamide)in China[J].Yunnan Chemical Technology,2018,45(8):189-190.
[3] XIE C J,YANG S X,HE R,et al.Recent advances in self-assembly and application of Para-aramids[J].Molecules,2022,27(14):4413-4430.
[4] KONG H J,YANG P,TENG C Q,et al.Surface modification of poly(p-phenylene terephthalamide) fibers with HDI assisted by supercritical carbon dioxide[J].RSC Advances,2015,5(72):58916-58920.
[5] LIU Y,QIU G Y,LI T,et al.Preparation of metal organic framework hybridizing with poly(p-phenylene terephthalamide) fiber and adsorption properties for anionic dye[J].Pigment & Resin Technology,2023,52(1):60-72.
[6] YANG X,TU Q Z,SHEN X M,et al.Enhancing the interfacial adhesion with rubber matrix by grafting polydopamine-carbon nanotubes onto poly(p-phenylene terephthalamide) fibers[J].Polymers,2019,11(8):1231-1244.
[7] YANG X,TU Q Z,SHEN X M,et al.A novel method for deposition of multi-walled carbon nanotubes onto poly(p-phenylene terephthalamide) fibers to enhance interfacial adhesion with rubber matrix[J].Polymers,2019,11(2):374-390.
[8] LI K,LI L,QIN J Q,et al.A facile method to enhance UV stability of PBIA fibers with intense fluorescence emission by forming complex with hydrogen chloride on the fibers surface[J].Polymer Degradation and Stability,2016,128:278-285.
[9] LI K,LUO L B,HUANG J Y,et al.The evolution of structure and properties for copolyamide fibers-containing benzimidazole units during the decomplexation of hydrogen chloride[J].High Performance Polymers,2016,28(4):381-389.
[10] 张跃,谢瑞刚,严生虎,等.NMP-DMAC溶剂体系中制备PPTA的研究[J].化工新型材料,2010,38(12):71-74.ZHANG Y,XIE R G,YAN S H,et al.Experimental study on synthesis of poly(p-phenylene terephthalamide)in NMP-DMAC mixed solvents[J].New Chemical Materials,2010,38(12):71-74.
[11] 邓澧儒,钱人元.声速法测定纤维的取向度[J].高分子通讯,1964(2):117-123.DENG L R,QIAN R Y.Measurement of fiber orientation using sound velocity method[J].Acta Polymerica Sinica,1964(2):117-123.
[12] 钱咸彧,吴清基,阮毛娣.芳纶1414无规取向声速值(Cu)的确定[J].纺织特品技术,1985(6):28-30.QIAN X X,WU Q J,RUAN M D.Determination of the acoustic velocity value (Cu) of aramid 1414 with random orientation[J].Technical Textiles,1985(6):28-30.
[13] ZHENG S S,DONG H,WANG S H,et al.Scalable reaction-spinning of rigid-rod Upilex-S? type polyimide fiber with an ultrahigh Tg[J].Chinese Journal of Polymer Science,2021,39(5):592-600.
[14] 李智鹏,扈艳红,杜磊,等.国产芳纶上浆剂对聚三唑复合材料力学性能的影响[J].表面技术,2014,43(4):17-23.LI Z P,HU Y H,DU L,et al.Effect of domestic aramid fiber sizing agents on mechanical properties of polytriazole composites[J].Surface Technology,2014,43(4):17-23.
[15] EHRENBERG W,FRANKS A.Small-angle X-ray scattering[J].Nature,1952,170(4338):1076-1077.
[16] YU J C,WANG R,YANG C L,et al.Morphology and structure changes of aromatic copolysulfonamide fibers heat-drawn at various temperatures[J].Polymer International,2014,63(12):2084-2090.
[17] RULAND W.Small-angle scattering studies on carbonized cellulose fibers[J].Journal of Polymer Science Part C:Polymer Symposia,1969,28(1):143-151.
[18] PENN L,LARSEN F.Physicochemical properties of Kevlar 49 fiber[J].Journal of Applied Polymer Science,1979,23(1):59-73.
[19] GRUBB D T,PRASAD K.High-modulus polyethylene fiber structure as shown by X-ray diffraction[J].Macromolecules,1992,25(18):4575-4582.
[20] BROWN H R,MILLS P J,KRAMER E J.A SAXS study of a single crack and craze in plasticized polystyrene[J].Journal of Polymer Science:Polymer Physics Edition,1985,23(9):1857-1867.
基本信息:
DOI:10.19886/j.cnki.dhdz.2023.0308
中图分类号:TQ342.722
引用信息:
[1]路慧颖,唐凯,雒瑞银等.对位芳纶的结构与缺陷对其力学性能的影响[J].东华大学学报(自然科学版),2024,50(04):76-82.DOI:10.19886/j.cnki.dhdz.2023.0308.
基金信息:
国家重点研发计划(2021YFB3700102)