本文主要研究内容
作者王勇（2019）在《三轴系非等汇聚点高弹导电复合纱的成形与表征及应用》一文中研究指出：弹力导电复合纱的成形方法在空心锭包缠纺纱体系上已有研究和应用,但基于环锭纺的多轴系非等汇聚点高弹导电复合纱在国内外鲜见报道,主要研究工作在TMT-FSM（Textile Materials and Technology&Fibrous Soft Matter）团队。本课题在此基础上创新纺制了三轴系高弹导电复合纱,并对其成纱机理、结构与性能及可穿戴电热行为做了基础性应用研究,既为丰富纺纱理论和创新纺纱技术提供有效借鉴,又满足可穿戴电热器件对力学柔弹性和皮肤共形性要求,具有重要的学术和实用价值。多轴系非等汇聚点复合纺纱技术由东华大学TMT-FSM团队首次提出,具有原创性知识产权。其理论基础是多轴系纤维体在输出位置与张力和非等汇聚点位置精准受控条件下的复合纺纱原理与装置;其核心创新在于汇聚点的变位与多级变化;其实施是在普通环锭细纱机上加装一对用于调节氨纶丝牵伸倍数的积极喂入罗拉、可调控不锈钢金属丝和氨纶丝定位的微细沟槽罗拉和一金属丝张力盘等构成的纺纱组件。由此实现了三轴系非等汇聚点高弹导电复合纱的纺制和刚性长丝在成纱中的弹性化,并从复合纱纺程几何及力学角度,理论推导结合实测验证,观测纺纱工艺参数（轴间距、捻度、锭速及氨纶牵伸倍数等）对二级汇聚点的移动和三角区形态及其成纱行为作了定量的描述。进一步,基于自定权重,揭示工艺参数与成纱性能间的量化关系,可实现生产工艺的优化:轴间距10.5 mm,捻度700 tpm,锭速7000 rpm,氨纶预牵伸倍数3.0,可为实际生产提供参考依据。在成纱结构表征方面,自主搭建一用于研究纱线结构参数的简易观测系统,可连续跟踪捕捉纱线在不同拉伸状态下的外貌形态、螺距及表观直径等。复合纱在自然状态下呈三维螺旋线圈状,且具有高度可拉伸性,故可将其近似看作一圆柱螺旋弹簧。随着拉伸的进行,纱线趋于拉直变细,螺距增大且逐渐嵌入纱体。在此基础上提出成纱结构表征指标:纱线伸长率ey、螺距比λ、纱线弹性回复率R与塑变率P、螺旋角弹性回复率Rα和塑变率Pα、径向收缩率r与泊松比ν,可精准地反映纱线在大变形拉伸过程中的结构变形特性。ey、λ、r与纱线拉伸程度成正相关,R和Rα均大于95%（相应地,P和Pα均小于5%）。复合纱经较大定伸长单/多次循环拉伸后,须条纤维发生一定程度的摩擦、滑移,导致弹性回复率稍微降低,表明该复合纱具有优良的柔弹特性。在电学表征方面,初始态复合纱在不同隔距长度、载荷和小应变拉伸条件下均具有较稳定的线性电阻变化特性,进一步验证该复合纱具有较强的实用价值。纱线强伸性质研究是纺织科学领域的经典课题。以复合纱特有的成纱结构为主,结合复合纱的复合比对性能的影响,通过改变氨纶牵伸倍数而获得不同复合比例,构建一种改进的Hamburger复合纱强度预测模型。基于复合纱芯、鞘层各自单独成纱的实测拉伸曲线即可预测不同复合比例复合纱强度,可明确复合纱与其各组分性能间的复合原理。进一步地,以较优成纱工艺纺制的高弹导电复合纱为研究对象,从复合纱各轴系纱的拉伸变形角度出发,基于经典Vangheluwe力学模型,采取以结构体为特征的元件定位与组合,建立了四元件粘弹性模型,模型由反映粘胶单纱粘弹性质的Maxwell元件、表征刚性金属丝非线性力学性质的非线性弹簧和表征氨纶弹力丝拉伸力学行为的线性弹簧并联组成,其可精准地表征纱线非线性拉伸行为并得到实测验证;可直接估算各轴系纱在成纱中的模量和粘滞系数等特征参数,并有助于分析模型各参数随拉伸速率变化的规律和原因,丰富复合纱粘弹力学理论研究。此外,基于标准二参数Weibull分布,构建不同隔距长度、拉伸速率下复合纱断裂强度的改进Weibull预测模型,可在无损情况下,基于模型中的各参数精准预测复合纱在不同隔距长度和拉伸速率测试条件下的断裂强度。复合纱断裂强度与隔距长度负相关,而与拉伸速率正相关。最后,探讨了复合纱在不同拉速下的断口形貌。低速下,纱体内纤维间的较大交互作用以及足够时间的纤维重排等,复合纱断口近似为平齐端,且较平行;高速下,由于较短时间的重排取向以及刚性长丝的瞬间冲击载荷等,局部应力集中,复合纱断口呈现为不齐端,且扇开状。构筑基于高弹导电复合纱的柔弹性加热器件。复合纱在不同电压、拉伸、同电压循环及高低压变换等模式下均展现出优良的电热性能;基于该纱的“嵌入型”针织产品亦具有较好的循环使用能力,可满足实用性需求。复合纱导电性主要来源于其所含不锈钢金属丝,在3-12 V电压下,电热转换效率hr+c=7.90-8.96 mW/℃。基于热传递理论,静态下复合纱在一定电压下的稳态温度取决于发热量与散热量大小,表面温度与电压平方正相关,可通过调节外加电压来控制电热器件的发热温度,实现控温与加热双重功能。此外,复合纱直径变细效应和逐步降低的热耦合效应是影响复合纱在大变形拉伸条件下表明温度逐渐降低的关键因素。在较小拉伸（0-50%）条件下,温度最大降幅较小,表明该纱线较强的实用性。基于环锭纺的多轴系非等汇聚点复合纺纱技术既丰富和创新了纺纱成形机理,又可为高品质、多元功能化加工提供技术基础;高弹导电复合纱在可穿戴电热领域的研究可为该新型复合纱的应用创新提供有效借鉴。
Abstract
dan li dao dian fu ge sha de cheng xing fang fa zai kong xin ding bao chan fang sha ti ji shang yi you yan jiu he ying yong ,dan ji yu huan ding fang de duo zhou ji fei deng hui ju dian gao dan dao dian fu ge sha zai guo nei wai xian jian bao dao ,zhu yao yan jiu gong zuo zai TMT-FSM（Textile Materials and Technology&Fibrous Soft Matter）tuan dui 。ben ke ti zai ci ji chu shang chuang xin fang zhi le san zhou ji gao dan dao dian fu ge sha ,bing dui ji cheng sha ji li 、jie gou yu xing neng ji ke chuan dai dian re hang wei zuo le ji chu xing ying yong yan jiu ,ji wei feng fu fang sha li lun he chuang xin fang sha ji shu di gong you xiao jie jian ,you man zu ke chuan dai dian re qi jian dui li xue rou dan xing he pi fu gong xing xing yao qiu ,ju you chong yao de xue shu he shi yong jia zhi 。duo zhou ji fei deng hui ju dian fu ge fang sha ji shu you dong hua da xue TMT-FSMtuan dui shou ci di chu ,ju you yuan chuang xing zhi shi chan quan 。ji li lun ji chu shi duo zhou ji qian wei ti zai shu chu wei zhi yu zhang li he fei deng hui ju dian wei zhi jing zhun shou kong tiao jian xia de fu ge fang sha yuan li yu zhuang zhi ;ji he xin chuang xin zai yu hui ju dian de bian wei yu duo ji bian hua ;ji shi shi shi zai pu tong huan ding xi sha ji shang jia zhuang yi dui yong yu diao jie an guan si qian shen bei shu de ji ji wei ru luo la 、ke diao kong bu xiu gang jin shu si he an guan si ding wei de wei xi gou cao luo la he yi jin shu si zhang li pan deng gou cheng de fang sha zu jian 。you ci shi xian le san zhou ji fei deng hui ju dian gao dan dao dian fu ge sha de fang zhi he gang xing chang si zai cheng sha zhong de dan xing hua ,bing cong fu ge sha fang cheng ji he ji li xue jiao du ,li lun tui dao jie ge shi ce yan zheng ,guan ce fang sha gong yi can shu （zhou jian ju 、nian du 、ding su ji an guan qian shen bei shu deng ）dui er ji hui ju dian de yi dong he san jiao ou xing tai ji ji cheng sha hang wei zuo le ding liang de miao shu 。jin yi bu ,ji yu zi ding quan chong ,jie shi gong yi can shu yu cheng sha xing neng jian de liang hua guan ji ,ke shi xian sheng chan gong yi de you hua :zhou jian ju 10.5 mm,nian du 700 tpm,ding su 7000 rpm,an guan yu qian shen bei shu 3.0,ke wei shi ji sheng chan di gong can kao yi ju 。zai cheng sha jie gou biao zheng fang mian ,zi zhu da jian yi yong yu yan jiu sha xian jie gou can shu de jian yi guan ce ji tong ,ke lian xu gen zong bu zhuo sha xian zai bu tong la shen zhuang tai xia de wai mao xing tai 、luo ju ji biao guan zhi jing deng 。fu ge sha zai zi ran zhuang tai xia cheng san wei luo xuan xian juan zhuang ,ju ju you gao du ke la shen xing ,gu ke jiang ji jin shi kan zuo yi yuan zhu luo xuan dan huang 。sui zhao la shen de jin hang ,sha xian qu yu la zhi bian xi ,luo ju zeng da ju zhu jian qian ru sha ti 。zai ci ji chu shang di chu cheng sha jie gou biao zheng zhi biao :sha xian shen chang lv ey、luo ju bi λ、sha xian dan xing hui fu lv Ryu su bian lv P、luo xuan jiao dan xing hui fu lv Rαhe su bian lv Pα、jing xiang shou su lv ryu bo song bi ν,ke jing zhun de fan ying sha xian zai da bian xing la shen guo cheng zhong de jie gou bian xing te xing 。ey、λ、ryu sha xian la shen cheng du cheng zheng xiang guan ,Rhe Rαjun da yu 95%（xiang ying de ,Phe Pαjun xiao yu 5%）。fu ge sha jing jiao da ding shen chang chan /duo ci xun huan la shen hou ,xu tiao qian wei fa sheng yi ding cheng du de ma ca 、hua yi ,dao zhi dan xing hui fu lv shao wei jiang di ,biao ming gai fu ge sha ju you you liang de rou dan te xing 。zai dian xue biao zheng fang mian ,chu shi tai fu ge sha zai bu tong ge ju chang du 、zai he he xiao ying bian la shen tiao jian xia jun ju you jiao wen ding de xian xing dian zu bian hua te xing ,jin yi bu yan zheng gai fu ge sha ju you jiao jiang de shi yong jia zhi 。sha xian jiang shen xing zhi yan jiu shi fang zhi ke xue ling yu de jing dian ke ti 。yi fu ge sha te you de cheng sha jie gou wei zhu ,jie ge fu ge sha de fu ge bi dui xing neng de ying xiang ,tong guo gai bian an guan qian shen bei shu er huo de bu tong fu ge bi li ,gou jian yi chong gai jin de Hamburgerfu ge sha jiang du yu ce mo xing 。ji yu fu ge sha xin 、qiao ceng ge zi chan du cheng sha de shi ce la shen qu xian ji ke yu ce bu tong fu ge bi li fu ge sha jiang du ,ke ming que fu ge sha yu ji ge zu fen xing neng jian de fu ge yuan li 。jin yi bu de ,yi jiao you cheng sha gong yi fang zhi de gao dan dao dian fu ge sha wei yan jiu dui xiang ,cong fu ge sha ge zhou ji sha de la shen bian xing jiao du chu fa ,ji yu jing dian Vangheluweli xue mo xing ,cai qu yi jie gou ti wei te zheng de yuan jian ding wei yu zu ge ,jian li le si yuan jian nian dan xing mo xing ,mo xing you fan ying nian jiao chan sha nian dan xing zhi de Maxwellyuan jian 、biao zheng gang xing jin shu si fei xian xing li xue xing zhi de fei xian xing dan huang he biao zheng an guan dan li si la shen li xue hang wei de xian xing dan huang bing lian zu cheng ,ji ke jing zhun de biao zheng sha xian fei xian xing la shen hang wei bing de dao shi ce yan zheng ;ke zhi jie gu suan ge zhou ji sha zai cheng sha zhong de mo liang he nian zhi ji shu deng te zheng can shu ,bing you zhu yu fen xi mo xing ge can shu sui la shen su lv bian hua de gui lv he yuan yin ,feng fu fu ge sha nian dan li xue li lun yan jiu 。ci wai ,ji yu biao zhun er can shu Weibullfen bu ,gou jian bu tong ge ju chang du 、la shen su lv xia fu ge sha duan lie jiang du de gai jin Weibullyu ce mo xing ,ke zai mo sun qing kuang xia ,ji yu mo xing zhong de ge can shu jing zhun yu ce fu ge sha zai bu tong ge ju chang du he la shen su lv ce shi tiao jian xia de duan lie jiang du 。fu ge sha duan lie jiang du yu ge ju chang du fu xiang guan ,er yu la shen su lv zheng xiang guan 。zui hou ,tan tao le fu ge sha zai bu tong la su xia de duan kou xing mao 。di su xia ,sha ti nei qian wei jian de jiao da jiao hu zuo yong yi ji zu gou shi jian de qian wei chong pai deng ,fu ge sha duan kou jin shi wei ping ji duan ,ju jiao ping hang ;gao su xia ,you yu jiao duan shi jian de chong pai qu xiang yi ji gang xing chang si de shun jian chong ji zai he deng ,ju bu ying li ji zhong ,fu ge sha duan kou cheng xian wei bu ji duan ,ju shan kai zhuang 。gou zhu ji yu gao dan dao dian fu ge sha de rou dan xing jia re qi jian 。fu ge sha zai bu tong dian ya 、la shen 、tong dian ya xun huan ji gao di ya bian huan deng mo shi xia jun zhan xian chu you liang de dian re xing neng ;ji yu gai sha de “qian ru xing ”zhen zhi chan pin yi ju you jiao hao de xun huan shi yong neng li ,ke man zu shi yong xing xu qiu 。fu ge sha dao dian xing zhu yao lai yuan yu ji suo han bu xiu gang jin shu si ,zai 3-12 Vdian ya xia ,dian re zhuai huan xiao lv hr+c=7.90-8.96 mW/℃。ji yu re chuan di li lun ,jing tai xia fu ge sha zai yi ding dian ya xia de wen tai wen du qu jue yu fa re liang yu san re liang da xiao ,biao mian wen du yu dian ya ping fang zheng xiang guan ,ke tong guo diao jie wai jia dian ya lai kong zhi dian re qi jian de fa re wen du ,shi xian kong wen yu jia re shuang chong gong neng 。ci wai ,fu ge sha zhi jing bian xi xiao ying he zhu bu jiang di de re ou ge xiao ying shi ying xiang fu ge sha zai da bian xing la shen tiao jian xia biao ming wen du zhu jian jiang di de guan jian yin su 。zai jiao xiao la shen （0-50%）tiao jian xia ,wen du zui da jiang fu jiao xiao ,biao ming gai sha xian jiao jiang de shi yong xing 。ji yu huan ding fang de duo zhou ji fei deng hui ju dian fu ge fang sha ji shu ji feng fu he chuang xin le fang sha cheng xing ji li ,you ke wei gao pin zhi 、duo yuan gong neng hua jia gong di gong ji shu ji chu ;gao dan dao dian fu ge sha zai ke chuan dai dian re ling yu de yan jiu ke wei gai xin xing fu ge sha de ying yong chuang xin di gong you xiao jie jian 。
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论文作者分别是来自东华大学的王勇，发表于刊物东华大学2019-09-23论文，是一篇关于高弹导电复合纱论文,非等汇聚点论文,环锭纺论文,力学表征论文,强力预测论文,分布论文,电致生热论文,东华大学2019-09-23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，资料来自东华大学2019-09-23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：高弹导电复合纱论文; 非等汇聚点论文; 环锭纺论文; 力学表征论文; 强力预测论文; 分布论文; 电致生热论文; 东华大学2019-09-23论文;