Water‐based poly(2‐ethylhexyl acrylate‐itaconic acid) removable adhesives with frost resistance for digital inkjet printing,Journal of Applied Polymer Science

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Water‐based poly(2‐ethylhexyl acrylate‐itaconic acid) removable adhesives with frost resistance for digital inkjet printing
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-07-07 , DOI: 10.1002/app.49651
Lei Zhang ₁ , Yongping Bai ₂ , Bin Yin ₁ , Hongxia Peng ₁ , Changyan Ji ₁ , Wang Zhang ₁

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Adhesives are nonmetallic materials used to bond each layer in many applications for its flexibility. For digital inkjet printing, the requirements of adhesives performance are demanding as they must be able to adhere well to adherend, be removable without leaving adhesive residue, or even causing any damage. Water‐based polyacrylates have been widely used for backing adhesive layer in application of digital inkjet printing, due to their various advantages. While the application has been limited on account of the weak frost resistance of common polyacrylates, which could not be used directly under low temperature storage. To improve the weak frost resistance, water‐based poly(2‐ethylhexyl acrylate‐itaconic acid) was synthesized. Itaconic acid (ITA) could be greatly beneficial to improve the frost resistance. The polyacrylates could still be used directly, even after being frozen below at −18°C for 16 hr. The adhesion properties of polyacrylates could also be enhanced by moderate ITA. The results show that the optimal amount of ITA was 2 mass%. The overall properties of the resulting polyacrylates with the 180° peel strength of 2.73 N/25 mm, the tack of 23 #, and the shear holding power of more than 24 hr are suitable for practical applications on removable adhesives for digital inkjet printing.

中文翻译：

用于数字喷墨打印的具有抗冻性的水性聚（丙烯酸2-乙基己酯-衣康酸）可移动粘合剂

胶粘剂是非金属材料，由于其柔韧性，在许多应用中用于粘合每一层。对于数字喷墨打印，对胶粘剂性能的要求很高，因为它们必须能够很好地粘附到被粘物上，可除去而不会留下胶粘剂残留或什至造成任何损坏。水性聚丙烯酸酯因具有多种优势而被广泛用于数字喷墨印刷应用中的背胶层。尽管由于普通聚丙烯酸酯的抗冻性差而使应用受到限制，但普通聚丙烯酸酯不能在低温储存条件下直接使用。为了提高抗冻性，合成了水性聚（丙烯酸2-乙基己酯-衣康酸）。衣康酸（ITA）可能对改善抗冻性非常有益。即使在-18℃以下冷冻16小时后，聚丙烯酸酯仍可直接使用。适度的ITA也可以增强聚丙烯酸酯的粘合性能。结果表明，ITA的最佳量为2质量％。所得聚丙烯酸酯的整体性能为180°剥离强度为2.73 N / 25 mm，粘性为23＃，剪切保持力超过24 hr，适用于数字喷墨印刷的可移动粘合剂的实际应用。

更新日期：2020-07-07

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