Pressure sensitive adhesive based on PFBA monomer for ePTFE bonding
Pressure sensitive adhesive based on PFBA monomer for ePTFE bonding
复制标题
基于 PFBA 单体的压敏粘合剂，用于 ePTFE 粘合
DOI：
10.1002/app.52278
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发表时间：
2022-02
影响因子：
3
通讯作者：
Yanli Liang
中科院分区：
文献类型：
--
作者：
Wei Li;Xiao‐Yan Ma;Jie Yan;Wei Zou;Wenjiang Zheng;Yanli Li;Yanli Liang
膨胀聚四氟乙烯（ePTFE）具有抗压缩蠕变、抗压缩回弹性等优异性能，但由于其表面能低、结晶度高、结构高度对称，难以与其他材料结合。本文以丙烯酸丁酯、甲基丙烯酸缩水甘油酯和独特的五氟苯甲酸酯为原料制备了一种新型压敏胶粘剂，其中引入了五氟苯基提供位阻以避免聚类，同时提高了与ePTFE的亲合力。这种压敏胶的热稳定性约为250°C；接触角可达110.7°；剥离强度可达19 N/25 mm，与文献值相当。室温下剪切保持力可保持在100h以上，且随浸泡时间的延长而增大，是文献报道的5倍。这种新型胶粘剂可以很好地解决ePTFE在复杂环境下的粘接问题。
Expanded polytetrafluoroethylene (ePTFE) has superior properties such as compression creep resistance and compression resilience, but it is difficult to bond with other materials due to its low surface energy, high crystallinity and highly symmetrical structure. In this paper, a new type of pressure‐sensitive adhesive is prepared from butyl acrylate, glycidyl methacrylate and unique pentafluorobenzyl acrylate, in which pentafluorophenyl group is introduced to provide steric hindrance to avoid clustering and increase the affinity with ePTFE simultaneously. The thermal stability of this pressure‐sensitive adhesive is approximately 250°C; the contact angle can reach 110.7°; the peel strength can reach 19 N/25 mm, comparable to literature values. The shear holding power at room temperature can be maintained over 100 h, and increases with the extension of immersion time in water, 5 times that of the literature report. This new adhesive can aptly solve the adhesion challenges with the use of ePTFE in complex environment.
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作者：
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通讯作者：
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