本文主要研究内容
作者周雪莉（2019）在《仿生定向纤维增强材料磁组装3D/4D打印及其性能研究》一文中研究指出：生物运用纤维等增强要素排列成各种各样的有序结构,以实现其材料性能调控,如螳螂虾运用纤维的螺旋排列提高材料抗冲击性能,贝类运用砖泥结构增强贝壳材料韧性,松树运用双层结构的各向异性纤维取向控制松塔鳞片变形等。生物材料的构建策略具有高效率、多功能的优势,表现出既轻又强、既强又韧、自适应及自修复等优于人工材料的优异性能。虽然生物提供了设计方案,但是仿制生物材料复杂组织结构却极其困难。增材制造(3D打印)技术以数字模型驱动,通过逐点添加材料累积成型,具备在打印过程中调控材料组织结构的潜在能力,使设计制备具有复杂组织结构的仿生材料成为可能。然而,目前的打印技术不能对增强材料定向组装,急需研发控形控性的增材制造技术,制备仿生有序结构材料,探索结构-性能关系,为发展下一代先进材料提供理论基础和实用制造技术。本文研究开发了运用磁场使增强材料定向的磁组装3D打印原理和关键技术,揭示了磁场强度、材料性质对定向组装性能的影响规律,获得了优化的组装打印工艺参数。进而,运用磁组装3D打印技术,设计制备了几种典型的运用有序结构调控性能的仿生材料,包括:(1)仿生有序结构抗冲击材料,运用纤维排列结构调控、增强材料力学性能;(2)微结构热调控材料,运用纤维的取向调控材料的热学性能;(3)微结构控制的自变形动态材料(受到适当外激励可以产生形状结构变化的材料,也称为智能材料),在可变形基质中打印出有序结构纤维,运用纤维的排列取向控制材料的变形。本文研究了有序结构形式、参数对材料性能的影响规律,揭示了材料组织结构-性能关系,证明了运用仿生有序结构设计实现材料性能调控的可行性,为发展仿生材料提供设计依据和制造途径。本文具体研究内容主要包括以下4个方面:(1)研究开发了基于磁组装工艺与数字光固化技术的磁组装3D打印技术,在打印复杂几何外形的同时,能够局部调控材料内部纤维取向。磁组装3D打印工艺原理是,在液体光敏树脂打印材料中加入磁性短纤维,通过可编程控制的磁场控制纤维进行定向组装,实现有序纤维增强材料打印。研究了磁场、工艺参数及纤维含量等对纤维取向及材料固化程度的影响,获得了优化的材料配比、磁场及打印参数,为仿生有序结构材料制备提供了实用且低成本的制造手段。(2)以具有优异机械性能的螳螂虾螯部材料的人字形与螺旋形相耦合的增强纤维结构为模本,进行仿生结构设计,利用磁组装3D打印工艺制备了仿螳螂虾螯微结构的仿生材料。研究了纤维排列结构形式及参数对材料性能的影响,发现材料抗冲击和压缩性能与纤维排列形式及参数有关。利用正交试验设计和极差分析方法,确定了影响材料力学性能的主次结构因素,揭示了仿生结构特征因素对材料力学性能影响规律。与随机分布的工程复合材料相比,生物材料运用有序结构选择性地增强材料性能,具有高效率及可调控的特点。解析生物材料的增强策略可以为开发高性能复合材料提供灵感,揭示生物材料结构-性能关系,可以为仿生材料设计提供依据。(3)有序排列结构不仅可以影响材料力学性能,也对材料的热光电等物理性能产生影响。受一些生物结构自调控现象的启发,设计制备了有序结构材料,研究了结构形式及参数对材料热传导及热膨胀特性的影响。研究结果表明,有序增强结构材料的热传导性能与纤维方向有关,平行于纤维方向热传导系数提高,垂直于纤维方向则下降。运用磁组装3D打印制备了不同位置具有不同纤维取向的热超材料,热性能分析表明,材料具有各向异性、各点异性的热性能。这种热性能随位置变化的材料被称为热超材料,在电子封装、太阳能电池、锂电池及散热器材料等方面存在广泛应用,与目前的均质材料相比,不但能提高热传导和热稳定性,还能够实现热屏蔽、热集中等热管理功能。(4)4D打印是3D打印的激励-响应材料结构,在遇到适当的外激励时,可以产生可编程的形状或性能变化。生物材料能用纤维有序结构控制变形,运用这种控制原理和磁组装3D打印,开展了仿生微结构编程4D打印研究。以松塔鳞片纤维结构为蓝本进行仿生设计,运用磁组装技术4D打印了有序微结构编程的激励响应材料。研究了纤维含量、方向及分布对材料变形性能的影响,揭示了纤维取向与变形的关系,提出了仿生微结构编程4D打印设计方法。如何运用材料结构设计控制4D行为,是4D打印关键技术,材料内部结构编程充分发挥了3D打印的优势,拓展了4D打印设计空间。
Abstract
sheng wu yun yong qian wei deng zeng jiang yao su pai lie cheng ge chong ge yang de you xu jie gou ,yi shi xian ji cai liao xing neng diao kong ,ru tang lang ha yun yong qian wei de luo xuan pai lie di gao cai liao kang chong ji xing neng ,bei lei yun yong zhuan ni jie gou zeng jiang bei ke cai liao ren xing ,song shu yun yong shuang ceng jie gou de ge xiang yi xing qian wei qu xiang kong zhi song da lin pian bian xing deng 。sheng wu cai liao de gou jian ce lve ju you gao xiao lv 、duo gong neng de you shi ,biao xian chu ji qing you jiang 、ji jiang you ren 、zi kuo ying ji zi xiu fu deng you yu ren gong cai liao de you yi xing neng 。sui ran sheng wu di gong le she ji fang an ,dan shi fang zhi sheng wu cai liao fu za zu zhi jie gou que ji ji kun nan 。zeng cai zhi zao (3Dda yin )ji shu yi shu zi mo xing qu dong ,tong guo zhu dian tian jia cai liao lei ji cheng xing ,ju bei zai da yin guo cheng zhong diao kong cai liao zu zhi jie gou de qian zai neng li ,shi she ji zhi bei ju you fu za zu zhi jie gou de fang sheng cai liao cheng wei ke neng 。ran er ,mu qian de da yin ji shu bu neng dui zeng jiang cai liao ding xiang zu zhuang ,ji xu yan fa kong xing kong xing de zeng cai zhi zao ji shu ,zhi bei fang sheng you xu jie gou cai liao ,tan suo jie gou -xing neng guan ji ,wei fa zhan xia yi dai xian jin cai liao di gong li lun ji chu he shi yong zhi zao ji shu 。ben wen yan jiu kai fa le yun yong ci chang shi zeng jiang cai liao ding xiang de ci zu zhuang 3Dda yin yuan li he guan jian ji shu ,jie shi le ci chang jiang du 、cai liao xing zhi dui ding xiang zu zhuang xing neng de ying xiang gui lv ,huo de le you hua de zu zhuang da yin gong yi can shu 。jin er ,yun yong ci zu zhuang 3Dda yin ji shu ,she ji zhi bei le ji chong dian xing de yun yong you xu jie gou diao kong xing neng de fang sheng cai liao ,bao gua :(1)fang sheng you xu jie gou kang chong ji cai liao ,yun yong qian wei pai lie jie gou diao kong 、zeng jiang cai liao li xue xing neng ;(2)wei jie gou re diao kong cai liao ,yun yong qian wei de qu xiang diao kong cai liao de re xue xing neng ;(3)wei jie gou kong zhi de zi bian xing dong tai cai liao (shou dao kuo dang wai ji li ke yi chan sheng xing zhuang jie gou bian hua de cai liao ,ye chen wei zhi neng cai liao ),zai ke bian xing ji zhi zhong da yin chu you xu jie gou qian wei ,yun yong qian wei de pai lie qu xiang kong zhi cai liao de bian xing 。ben wen yan jiu le you xu jie gou xing shi 、can shu dui cai liao xing neng de ying xiang gui lv ,jie shi le cai liao zu zhi jie gou -xing neng guan ji ,zheng ming le yun yong fang sheng you xu jie gou she ji shi xian cai liao xing neng diao kong de ke hang xing ,wei fa zhan fang sheng cai liao di gong she ji yi ju he zhi zao tu jing 。ben wen ju ti yan jiu nei rong zhu yao bao gua yi xia 4ge fang mian :(1)yan jiu kai fa le ji yu ci zu zhuang gong yi yu shu zi guang gu hua ji shu de ci zu zhuang 3Dda yin ji shu ,zai da yin fu za ji he wai xing de tong shi ,neng gou ju bu diao kong cai liao nei bu qian wei qu xiang 。ci zu zhuang 3Dda yin gong yi yuan li shi ,zai ye ti guang min shu zhi da yin cai liao zhong jia ru ci xing duan qian wei ,tong guo ke bian cheng kong zhi de ci chang kong zhi qian wei jin hang ding xiang zu zhuang ,shi xian you xu qian wei zeng jiang cai liao da yin 。yan jiu le ci chang 、gong yi can shu ji qian wei han liang deng dui qian wei qu xiang ji cai liao gu hua cheng du de ying xiang ,huo de le you hua de cai liao pei bi 、ci chang ji da yin can shu ,wei fang sheng you xu jie gou cai liao zhi bei di gong le shi yong ju di cheng ben de zhi zao shou duan 。(2)yi ju you you yi ji xie xing neng de tang lang ha ao bu cai liao de ren zi xing yu luo xuan xing xiang ou ge de zeng jiang qian wei jie gou wei mo ben ,jin hang fang sheng jie gou she ji ,li yong ci zu zhuang 3Dda yin gong yi zhi bei le fang tang lang ha ao wei jie gou de fang sheng cai liao 。yan jiu le qian wei pai lie jie gou xing shi ji can shu dui cai liao xing neng de ying xiang ,fa xian cai liao kang chong ji he ya su xing neng yu qian wei pai lie xing shi ji can shu you guan 。li yong zheng jiao shi yan she ji he ji cha fen xi fang fa ,que ding le ying xiang cai liao li xue xing neng de zhu ci jie gou yin su ,jie shi le fang sheng jie gou te zheng yin su dui cai liao li xue xing neng ying xiang gui lv 。yu sui ji fen bu de gong cheng fu ge cai liao xiang bi ,sheng wu cai liao yun yong you xu jie gou shua ze xing de zeng jiang cai liao xing neng ,ju you gao xiao lv ji ke diao kong de te dian 。jie xi sheng wu cai liao de zeng jiang ce lve ke yi wei kai fa gao xing neng fu ge cai liao di gong ling gan ,jie shi sheng wu cai liao jie gou -xing neng guan ji ,ke yi wei fang sheng cai liao she ji di gong yi ju 。(3)you xu pai lie jie gou bu jin ke yi ying xiang cai liao li xue xing neng ,ye dui cai liao de re guang dian deng wu li xing neng chan sheng ying xiang 。shou yi xie sheng wu jie gou zi diao kong xian xiang de qi fa ,she ji zhi bei le you xu jie gou cai liao ,yan jiu le jie gou xing shi ji can shu dui cai liao re chuan dao ji re peng zhang te xing de ying xiang 。yan jiu jie guo biao ming ,you xu zeng jiang jie gou cai liao de re chuan dao xing neng yu qian wei fang xiang you guan ,ping hang yu qian wei fang xiang re chuan dao ji shu di gao ,chui zhi yu qian wei fang xiang ze xia jiang 。yun yong ci zu zhuang 3Dda yin zhi bei le bu tong wei zhi ju you bu tong qian wei qu xiang de re chao cai liao ,re xing neng fen xi biao ming ,cai liao ju you ge xiang yi xing 、ge dian yi xing de re xing neng 。zhe chong re xing neng sui wei zhi bian hua de cai liao bei chen wei re chao cai liao ,zai dian zi feng zhuang 、tai yang neng dian chi 、li dian chi ji san re qi cai liao deng fang mian cun zai an fan ying yong ,yu mu qian de jun zhi cai liao xiang bi ,bu dan neng di gao re chuan dao he re wen ding xing ,hai neng gou shi xian re bing bi 、re ji zhong deng re guan li gong neng 。(4)4Dda yin shi 3Dda yin de ji li -xiang ying cai liao jie gou ,zai yu dao kuo dang de wai ji li shi ,ke yi chan sheng ke bian cheng de xing zhuang huo xing neng bian hua 。sheng wu cai liao neng yong qian wei you xu jie gou kong zhi bian xing ,yun yong zhe chong kong zhi yuan li he ci zu zhuang 3Dda yin ,kai zhan le fang sheng wei jie gou bian cheng 4Dda yin yan jiu 。yi song da lin pian qian wei jie gou wei lan ben jin hang fang sheng she ji ,yun yong ci zu zhuang ji shu 4Dda yin le you xu wei jie gou bian cheng de ji li xiang ying cai liao 。yan jiu le qian wei han liang 、fang xiang ji fen bu dui cai liao bian xing xing neng de ying xiang ,jie shi le qian wei qu xiang yu bian xing de guan ji ,di chu le fang sheng wei jie gou bian cheng 4Dda yin she ji fang fa 。ru he yun yong cai liao jie gou she ji kong zhi 4Dhang wei ,shi 4Dda yin guan jian ji shu ,cai liao nei bu jie gou bian cheng chong fen fa hui le 3Dda yin de you shi ,ta zhan le 4Dda yin she ji kong jian 。
论文参考文献
论文详细介绍
论文作者分别是来自吉林大学的周雪莉，发表于刊物吉林大学2019-06-25论文，是一篇关于仿生有序结构论文,磁组装打印论文,纤维定向论文,有序结构编程论文,打印论文,吉林大学2019-06-25论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自吉林大学2019-06-25论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：仿生有序结构论文; 磁组装打印论文; 纤维定向论文; 有序结构编程论文; 打印论文; 吉林大学2019-06-25论文;