本文主要研究内容
作者徐硕（2019）在《植物纤维真空辅助模塑下树脂浸润流动过程的研究》一文中研究指出：真空辅助树脂传递模塑(Vacuum assisted resin transfer molding,简称 VARTM)是一种先进的生物质液体成型技术,作为当今世界成本低廉、性能优异的先进生物质成型技术解决了以往传统成型技术成本高、能耗高、污染严重等一系列问题。基于VARTM成型技术下的植物纤维产品的制备研究,充分利用了植物纤维比强度高、可再生利用、质轻价廉、来源广泛等诸多优点,成为新领域研究和应用的热点。影响VARTM成型制品质量的因素较多,制品的质量不仅与树脂基体和纤维增强体的性能有关,更取决于树脂基体与纤维增强体的结合情况。为探索植物纤维真空辅助模塑下树脂的浸润流动规律,了解树脂在亚麻纤维多孔介质浸润过程,以达西定律为基础,建立了真空辅助树脂传递模塑成型技术下的树脂浸润模型;分析了树脂对亚麻纤维浸润性能的表征,探讨了树脂对亚麻纤维浸润性能改善的方法;推导了渗透率值的理论计算公式并实验测量了某亚麻纤维织物的一维单向渗透率值和二维径向渗透率值。结果表明:该亚麻纤维样品的一维单向渗透率值介于二维径向长短轴渗透率值之间。基于树脂在亚麻纤维多孔介质中流动的流体力学理论,对植物纤维真空辅助模塑下树脂流动过程进行模拟仿真研究,重点考察了真空压力、树脂黏度、有无导流介质等三个工艺参数对树脂流动过程的影响。结果表明:随着模腔内部真空压力的增加,树脂充模浸润流动时间变短;树脂黏度是VARTM成型技术中一个极其重要的工艺参数对树脂充模流动过程有显著影响,低粘度树脂拥有很好的流动性;有导流介质情况下树脂流动良好,充模时间短,且树脂充模前锋曲线较为平直,浸润性好。针对VARTM成型过程中重力效应对树脂浸润流动过程的影响进行实验研究,选择亚麻纤维作为增强体,环氧树脂为基体材料,采用真空辅助树脂传递模塑(VARTM)成型技术制备了亚麻纤维树脂基层合板,记录树脂在不同树脂流动倾角下的充模时间,对制件层合板进行拉伸、弯曲性能测试。结果表明:充模时间随着树脂流动倾角的增大(从-90°至90°)而增加;随着树脂流动倾角的增大,制件层合板的拉伸强度、拉伸弹性模量、弯曲强度、弯曲弹性模量等均增大。在制件层合板拉伸破坏的失效形式下,主要是纤维失效包括亚麻纤维拔出和亚麻纤维断裂;在制件层合板弯曲破坏的失效形式下,主要是亚麻纤维分层断裂和基体开裂。
Abstract
zhen kong fu zhu shu zhi chuan di mo su (Vacuum assisted resin transfer molding,jian chen VARTM)shi yi chong xian jin de sheng wu zhi ye ti cheng xing ji shu ,zuo wei dang jin shi jie cheng ben di lian 、xing neng you yi de xian jin sheng wu zhi cheng xing ji shu jie jue le yi wang chuan tong cheng xing ji shu cheng ben gao 、neng hao gao 、wu ran yan chong deng yi ji lie wen ti 。ji yu VARTMcheng xing ji shu xia de zhi wu qian wei chan pin de zhi bei yan jiu ,chong fen li yong le zhi wu qian wei bi jiang du gao 、ke zai sheng li yong 、zhi qing jia lian 、lai yuan an fan deng zhu duo you dian ,cheng wei xin ling yu yan jiu he ying yong de re dian 。ying xiang VARTMcheng xing zhi pin zhi liang de yin su jiao duo ,zhi pin de zhi liang bu jin yu shu zhi ji ti he qian wei zeng jiang ti de xing neng you guan ,geng qu jue yu shu zhi ji ti yu qian wei zeng jiang ti de jie ge qing kuang 。wei tan suo zhi wu qian wei zhen kong fu zhu mo su xia shu zhi de jin run liu dong gui lv ,le jie shu zhi zai ya ma qian wei duo kong jie zhi jin run guo cheng ,yi da xi ding lv wei ji chu ,jian li le zhen kong fu zhu shu zhi chuan di mo su cheng xing ji shu xia de shu zhi jin run mo xing ;fen xi le shu zhi dui ya ma qian wei jin run xing neng de biao zheng ,tan tao le shu zhi dui ya ma qian wei jin run xing neng gai shan de fang fa ;tui dao le shen tou lv zhi de li lun ji suan gong shi bing shi yan ce liang le mou ya ma qian wei zhi wu de yi wei chan xiang shen tou lv zhi he er wei jing xiang shen tou lv zhi 。jie guo biao ming :gai ya ma qian wei yang pin de yi wei chan xiang shen tou lv zhi jie yu er wei jing xiang chang duan zhou shen tou lv zhi zhi jian 。ji yu shu zhi zai ya ma qian wei duo kong jie zhi zhong liu dong de liu ti li xue li lun ,dui zhi wu qian wei zhen kong fu zhu mo su xia shu zhi liu dong guo cheng jin hang mo ni fang zhen yan jiu ,chong dian kao cha le zhen kong ya li 、shu zhi nian du 、you mo dao liu jie zhi deng san ge gong yi can shu dui shu zhi liu dong guo cheng de ying xiang 。jie guo biao ming :sui zhao mo qiang nei bu zhen kong ya li de zeng jia ,shu zhi chong mo jin run liu dong shi jian bian duan ;shu zhi nian du shi VARTMcheng xing ji shu zhong yi ge ji ji chong yao de gong yi can shu dui shu zhi chong mo liu dong guo cheng you xian zhe ying xiang ,di nian du shu zhi yong you hen hao de liu dong xing ;you dao liu jie zhi qing kuang xia shu zhi liu dong liang hao ,chong mo shi jian duan ,ju shu zhi chong mo qian feng qu xian jiao wei ping zhi ,jin run xing hao 。zhen dui VARTMcheng xing guo cheng zhong chong li xiao ying dui shu zhi jin run liu dong guo cheng de ying xiang jin hang shi yan yan jiu ,shua ze ya ma qian wei zuo wei zeng jiang ti ,huan yang shu zhi wei ji ti cai liao ,cai yong zhen kong fu zhu shu zhi chuan di mo su (VARTM)cheng xing ji shu zhi bei le ya ma qian wei shu zhi ji ceng ge ban ,ji lu shu zhi zai bu tong shu zhi liu dong qing jiao xia de chong mo shi jian ,dui zhi jian ceng ge ban jin hang la shen 、wan qu xing neng ce shi 。jie guo biao ming :chong mo shi jian sui zhao shu zhi liu dong qing jiao de zeng da (cong -90°zhi 90°)er zeng jia ;sui zhao shu zhi liu dong qing jiao de zeng da ,zhi jian ceng ge ban de la shen jiang du 、la shen dan xing mo liang 、wan qu jiang du 、wan qu dan xing mo liang deng jun zeng da 。zai zhi jian ceng ge ban la shen po huai de shi xiao xing shi xia ,zhu yao shi qian wei shi xiao bao gua ya ma qian wei ba chu he ya ma qian wei duan lie ;zai zhi jian ceng ge ban wan qu po huai de shi xiao xing shi xia ,zhu yao shi ya ma qian wei fen ceng duan lie he ji ti kai lie 。
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论文作者分别是来自东北林业大学的徐硕，发表于刊物东北林业大学2019-11-18论文，是一篇关于树脂流动论文,浸润特性论文,渗透率论文,数值模拟论文,东北林业大学2019-11-18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，资料来自东北林业大学2019-11-18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：树脂流动论文; 浸润特性论文; 渗透率论文; 数值模拟论文; 东北林业大学2019-11-18论文;