In-plane biaxial ratcheting behavior of PVDF UF membrane

详细信息    查看全文

• 作者：Gang Chen ; ^{agang@tju.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Qiang Lin ; Shan Chen ; Xu Chen
• 关键词：In-plane ; Biaxial ; Ratcheting ; PVDF UF membrane ; Immersion
• 刊名：Polymer Testing
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：50
• 期：Complete
• 页码：41-48
• 全文大小：1506 K

文摘

A series of in-plane biaxial cyclic tests were conducted to investigate the biaxial ratcheting behavior of polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes via cruciform shaped specimens. A tailored biaxial cyclic testing system and an integrated non-contact displacement detecting system were used. The effects of stress amplitude, mean stress, stress rate and constant stress in the Y-direction on ratcheting behavior of PVDF UF membranes in the X-direction were studied. It was found that the ratcheting strain increases more rapidly as stress amplitude and mean stress become larger. However, the ratcheting strain and its rate decreased with increasing the stress rate or the constant stress in the Y-direction. Furthermore, the biaxial ratcheting tests were carried out on PVDF UF membrane with water immersion. It was found that the water immersion environment significantly accelerated the accumulation of ratcheting strain and its rate.