本文主要研究内容
作者鲁姗姗(2019)在《导电硅橡胶模型的制备及性能研究》一文中研究指出:精密纹理模具是一种结构复杂,表面具有微米级纹理结构的新型模具,已广泛应用于汽车、电子通信和仪器仪表等领域。精密纹理模具上的纹理信息来源于原始包覆模型或激光雕刻模型,它是通过翻印模型复制原始纹理信息,再经表面金属化处理得到具有相同精细结构的金属模具。由于该模具制造过程涉及多种模具翻制及导电化处理,极易造成纹理失真和尺寸变形等问题。因此,本文采用溶液稀释法和共固化法,以导电炭黑和氧化石墨烯为导电填料,制备具有优异仿真性和尺寸稳定性的加成型导电硅橡胶材料及翻印模型,并对该模型的固化能力、导电机理、表面金属化性能以及纹理仿真度等进行了研究。主要研究内容如下:采用共固化法制备了基础硅橡胶及导电硅橡胶,结合硅橡胶的脱模效果、翻印效果及交联密度确定了两种硅橡胶的最佳交联剂添加量分别为12份和20份;分析发现导电炭黑吸附的水及表面的羟基能与含氢硅油中硅氢键反应,阻碍硅乙烯基与硅氢键的加成反应,通过增加交联剂含量可以提高导电硅橡胶的交联度。采用溶液稀释法制备了导电硅橡胶,该方法能够改善导电炭黑在硅橡胶中的分散状态,从而有效降低基体的电阻值。经溶液稀释处理后,当导电炭黑的添加量为8份时,导电硅橡胶的电阻值下降了两个数量级,但溶剂挥发后的硅橡胶的加工粘度大大增加,给翻印模具的制造增加了困难。采用共固化法制备了硅橡胶翻印模型,研究了模型的导电性能、热稳定性及翻印效果。该模型经500次反复弯曲后电阻值仍然保持稳定,其电阻值最低为15.8Ω远远低于商品化导电硅橡胶的电阻值。导电炭黑的加入提高了导电硅橡胶的热稳定性。利用共聚焦显微镜的三维成像技术研究并计算了硅橡胶翻印模型的花纹复制效果,二维图像证明导电硅橡胶模型能够用作翻印模型使用;利用横截面线处的复制率及显微镜提取面的花纹深度方向损失比R,多角度地表征了纹理的损失情况,模型的翻印效果随导电炭黑添加量的增加而减弱。采用电化学沉积的方法对硅橡胶翻印模型进行了表面金属化试验,表征了硅橡胶表面电阻值与金属化性能的关系。硅橡胶翻印模型电阻值在小于91.3Ω时能够达到专业级赫尔槽铜片的电沉积效果,在电流密度相同的情况下,阴极的电阻值越小,电沉积速率越快。为了探究氧化石墨烯的加入能否显著提高导电硅橡胶的导电性能,制备了导电炭黑/氧化石墨烯导电硅橡胶。实验结果证明:当氧化石墨烯的添加量为10份时,导电硅橡胶的电阻值为94.4Ω,与仅添加12份导电炭黑时的导电硅橡胶电阻值91.3Ω相差不大。由于氧化石墨烯的成本较高,导电性能和热稳定性能一般,故不适合用于制备导电硅橡胶模型。
Abstract
jing mi wen li mo ju shi yi chong jie gou fu za ,biao mian ju you wei mi ji wen li jie gou de xin xing mo ju ,yi an fan ying yong yu qi che 、dian zi tong xin he yi qi yi biao deng ling yu 。jing mi wen li mo ju shang de wen li xin xi lai yuan yu yuan shi bao fu mo xing huo ji guang diao ke mo xing ,ta shi tong guo fan yin mo xing fu zhi yuan shi wen li xin xi ,zai jing biao mian jin shu hua chu li de dao ju you xiang tong jing xi jie gou de jin shu mo ju 。you yu gai mo ju zhi zao guo cheng she ji duo chong mo ju fan zhi ji dao dian hua chu li ,ji yi zao cheng wen li shi zhen he che cun bian xing deng wen ti 。yin ci ,ben wen cai yong rong ye xi shi fa he gong gu hua fa ,yi dao dian tan hei he yang hua dan mo xi wei dao dian tian liao ,zhi bei ju you you yi fang zhen xing he che cun wen ding xing de jia cheng xing dao dian gui xiang jiao cai liao ji fan yin mo xing ,bing dui gai mo xing de gu hua neng li 、dao dian ji li 、biao mian jin shu hua xing neng yi ji wen li fang zhen du deng jin hang le yan jiu 。zhu yao yan jiu nei rong ru xia :cai yong gong gu hua fa zhi bei le ji chu gui xiang jiao ji dao dian gui xiang jiao ,jie ge gui xiang jiao de tuo mo xiao guo 、fan yin xiao guo ji jiao lian mi du que ding le liang chong gui xiang jiao de zui jia jiao lian ji tian jia liang fen bie wei 12fen he 20fen ;fen xi fa xian dao dian tan hei xi fu de shui ji biao mian de qiang ji neng yu han qing gui you zhong gui qing jian fan ying ,zu ai gui yi xi ji yu gui qing jian de jia cheng fan ying ,tong guo zeng jia jiao lian ji han liang ke yi di gao dao dian gui xiang jiao de jiao lian du 。cai yong rong ye xi shi fa zhi bei le dao dian gui xiang jiao ,gai fang fa neng gou gai shan dao dian tan hei zai gui xiang jiao zhong de fen san zhuang tai ,cong er you xiao jiang di ji ti de dian zu zhi 。jing rong ye xi shi chu li hou ,dang dao dian tan hei de tian jia liang wei 8fen shi ,dao dian gui xiang jiao de dian zu zhi xia jiang le liang ge shu liang ji ,dan rong ji hui fa hou de gui xiang jiao de jia gong nian du da da zeng jia ,gei fan yin mo ju de zhi zao zeng jia le kun nan 。cai yong gong gu hua fa zhi bei le gui xiang jiao fan yin mo xing ,yan jiu le mo xing de dao dian xing neng 、re wen ding xing ji fan yin xiao guo 。gai mo xing jing 500ci fan fu wan qu hou dian zu zhi reng ran bao chi wen ding ,ji dian zu zhi zui di wei 15.8Ωyuan yuan di yu shang pin hua dao dian gui xiang jiao de dian zu zhi 。dao dian tan hei de jia ru di gao le dao dian gui xiang jiao de re wen ding xing 。li yong gong ju jiao xian wei jing de san wei cheng xiang ji shu yan jiu bing ji suan le gui xiang jiao fan yin mo xing de hua wen fu zhi xiao guo ,er wei tu xiang zheng ming dao dian gui xiang jiao mo xing neng gou yong zuo fan yin mo xing shi yong ;li yong heng jie mian xian chu de fu zhi lv ji xian wei jing di qu mian de hua wen shen du fang xiang sun shi bi R,duo jiao du de biao zheng le wen li de sun shi qing kuang ,mo xing de fan yin xiao guo sui dao dian tan hei tian jia liang de zeng jia er jian ruo 。cai yong dian hua xue chen ji de fang fa dui gui xiang jiao fan yin mo xing jin hang le biao mian jin shu hua shi yan ,biao zheng le gui xiang jiao biao mian dian zu zhi yu jin shu hua xing neng de guan ji 。gui xiang jiao fan yin mo xing dian zu zhi zai xiao yu 91.3Ωshi neng gou da dao zhuan ye ji he er cao tong pian de dian chen ji xiao guo ,zai dian liu mi du xiang tong de qing kuang xia ,yin ji de dian zu zhi yue xiao ,dian chen ji su lv yue kuai 。wei le tan jiu yang hua dan mo xi de jia ru neng fou xian zhe di gao dao dian gui xiang jiao de dao dian xing neng ,zhi bei le dao dian tan hei /yang hua dan mo xi dao dian gui xiang jiao 。shi yan jie guo zheng ming :dang yang hua dan mo xi de tian jia liang wei 10fen shi ,dao dian gui xiang jiao de dian zu zhi wei 94.4Ω,yu jin tian jia 12fen dao dian tan hei shi de dao dian gui xiang jiao dian zu zhi 91.3Ωxiang cha bu da 。you yu yang hua dan mo xi de cheng ben jiao gao ,dao dian xing neng he re wen ding xing neng yi ban ,gu bu kuo ge yong yu zhi bei dao dian gui xiang jiao mo xing 。
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论文作者分别是来自吉林大学的鲁姗姗,发表于刊物吉林大学2019-06-25论文,是一篇关于导电硅橡胶论文,导电炭黑论文,氧化石墨烯论文,电沉积论文,花纹损失论文,翻印模型论文,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:导电硅橡胶论文; 导电炭黑论文; 氧化石墨烯论文; 电沉积论文; 花纹损失论文; 翻印模型论文; 吉林大学2019-06-25论文;