Experimental methodology for bubble content measurement of thin films

The inclusion of micro bubbles often exists in polyimide films (PI) during the liquid molding process, which can largely affect the mechanical performance. However, there lacks an effective method to quantify the bubble content. Herein, an obvious tension variation of a pre-stressed polyimide film i...

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Autores principales:	Yibei Zhang, Bing Zhao, Jianhui Hu, Wujun Chen, Xiaowei Deng, Zhengyue Yu, Chao Xie, Fujun Peng, Xiaofei Huang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Bubble content Thin films Tension variation tests Vacuum tests Meso-size bubbles Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/e304a858735042428f01a6b3e9c3237b
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id	oai:doaj.org-article:e304a858735042428f01a6b3e9c3237b
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spelling	oai:doaj.org-article:e304a858735042428f01a6b3e9c3237b2021-11-24T04:23:38ZExperimental methodology for bubble content measurement of thin films0142-941810.1016/j.polymertesting.2020.106876https://doaj.org/article/e304a858735042428f01a6b3e9c3237b2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S014294182032105Xhttps://doaj.org/toc/0142-9418The inclusion of micro bubbles often exists in polyimide films (PI) during the liquid molding process, which can largely affect the mechanical performance. However, there lacks an effective method to quantify the bubble content. Herein, an obvious tension variation of a pre-stressed polyimide film is observed firstly in a vacuum test. This phenomenon is assumed that, when the vacuum level of the testing environment increases, the inner bubbles would expand mainly out of plane, resulting in an in-plane contraction, and the tension varies accordingly. This tension variation ability is found quite stable despite of the stochastic micro-bubble distribution, which could be utilized to quantify the bubble content. Moreover, a film with meso-size bubbles is tested to have the similar tension variation ability. According to the experimental results, the tension variation ability can be basically stable when the bubbles in the length and width directions reach a certain number (e.g. 10).Yibei ZhangBing ZhaoJianhui HuWujun ChenXiaowei DengZhengyue YuChao XieFujun PengXiaofei HuangElsevierarticleBubble contentThin filmsTension variation testsVacuum testsMeso-size bubblesPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 93, Iss , Pp 106876- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bubble content Thin films Tension variation tests Vacuum tests Meso-size bubbles Polymers and polymer manufacture TP1080-1185
spellingShingle	Bubble content Thin films Tension variation tests Vacuum tests Meso-size bubbles Polymers and polymer manufacture TP1080-1185 Yibei Zhang Bing Zhao Jianhui Hu Wujun Chen Xiaowei Deng Zhengyue Yu Chao Xie Fujun Peng Xiaofei Huang Experimental methodology for bubble content measurement of thin films
description	The inclusion of micro bubbles often exists in polyimide films (PI) during the liquid molding process, which can largely affect the mechanical performance. However, there lacks an effective method to quantify the bubble content. Herein, an obvious tension variation of a pre-stressed polyimide film is observed firstly in a vacuum test. This phenomenon is assumed that, when the vacuum level of the testing environment increases, the inner bubbles would expand mainly out of plane, resulting in an in-plane contraction, and the tension varies accordingly. This tension variation ability is found quite stable despite of the stochastic micro-bubble distribution, which could be utilized to quantify the bubble content. Moreover, a film with meso-size bubbles is tested to have the similar tension variation ability. According to the experimental results, the tension variation ability can be basically stable when the bubbles in the length and width directions reach a certain number (e.g. 10).
format	article
author	Yibei Zhang Bing Zhao Jianhui Hu Wujun Chen Xiaowei Deng Zhengyue Yu Chao Xie Fujun Peng Xiaofei Huang
author_facet	Yibei Zhang Bing Zhao Jianhui Hu Wujun Chen Xiaowei Deng Zhengyue Yu Chao Xie Fujun Peng Xiaofei Huang
author_sort	Yibei Zhang
title	Experimental methodology for bubble content measurement of thin films
title_short	Experimental methodology for bubble content measurement of thin films
title_full	Experimental methodology for bubble content measurement of thin films
title_fullStr	Experimental methodology for bubble content measurement of thin films
title_full_unstemmed	Experimental methodology for bubble content measurement of thin films
title_sort	experimental methodology for bubble content measurement of thin films
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/e304a858735042428f01a6b3e9c3237b
work_keys_str_mv	AT yibeizhang experimentalmethodologyforbubblecontentmeasurementofthinfilms AT bingzhao experimentalmethodologyforbubblecontentmeasurementofthinfilms AT jianhuihu experimentalmethodologyforbubblecontentmeasurementofthinfilms AT wujunchen experimentalmethodologyforbubblecontentmeasurementofthinfilms AT xiaoweideng experimentalmethodologyforbubblecontentmeasurementofthinfilms AT zhengyueyu experimentalmethodologyforbubblecontentmeasurementofthinfilms AT chaoxie experimentalmethodologyforbubblecontentmeasurementofthinfilms AT fujunpeng experimentalmethodologyforbubblecontentmeasurementofthinfilms AT xiaofeihuang experimentalmethodologyforbubblecontentmeasurementofthinfilms
_version_	1718416065965326336

Experimental methodology for bubble content measurement of thin films

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