界達電位對水性天然橡膠基感壓膠機械性質的影響

Mechanical Properties of a Waterborne Pressure-sensitive Adhesive with a Natural Rubber-based Polymer Network: Effect of Zeta Potential

牟隽月(C.Y. Mou)

《紡織綜合研究期刊》 32卷1期 (2022/01) Pp. 16-22

https://doi.org/10.6439/TTRJ.202201_32(1).0003

摘要

本研究分為樹脂乳化和水性感壓膠機械性質影響兩部分。藉由控制乳液粒徑及界達電位，增加二相乳液的互溶效果，之後製作感壓膠帶測試其物性。結果顯示pH9時樹脂乳液界達電位為-61.48mV，感壓膠乳液界達電位為-83.45mV。經3000rpm高速離心仍不分層。感壓膠帶的剝離強度提升35.5%，切變強度提升48.75%，表示其聚合物之極限黏度較高。內聚力提升30%，表示膠帶撕離時不留殘膠於底材。速黏性提升90%，因有較高保水性有利於聚合物分子對底材的擴散，而有較佳的速黏性。

關鍵字

感壓膠 ； 界達電位 ； 剝離強度 ； 切變強度

並列摘要

This study is divided into two parts: resin emulsification and effects of waterborne pressure sensitive adhesive (PSA) of mechanical properties. By controlling resin emulsion of particles size and zeta potential of increased two phase solubilization effect, then testing mechanical properties of PSA tape. The results showed that at pH 9, the Zeta potentials of the resin emulsion and PSA were -61.48mV and -83.45mV, respectively. The emulsion formula is physically stable, and there is no delamination even under high-speed centrifugation at 3000 rpm. The peel strength and shear strength of PSA tape were increased by 35.5% and 48.75%, respectively, indicating that the limiting viscosity of the polymer was higher. The cohesion is increased by 30%, indicate that no glue remains on the substrate when the tape is removed. The viscosity is increased by 90%, because of higher water retention helps the polymer molecules diffuse to the substrate, it causes better fast adhesion.

並列關鍵字

Pressure sensitive adhesive ； zeta potential ； peel strength ； shear strength