PVAc Emulsion Containing Reactive Micro Gel Structure and Its Application in Photosensitive Adhesive

TIAN Chao; HUANG Yongbin; CHEN Liang; LU Jiehong; ZHAO Wenai; YUAN Teng

doi:10.19554/j.cnki.1001-3563.2025.15.021

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (15) : 184-190. DOI: 10.19554/j.cnki.1001-3563.2025.15.021

Advanced Materials

PVAc Emulsion Containing Reactive Micro Gel Structure and Its Application in Photosensitive Adhesive

TIAN Chao¹, HUANG Yongbin¹, CHEN Liang², LU Jiehong², ZHAO Wenai², YUAN Teng^1*

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Abstract

The work aims to introduce the multifunctional cross-linking monomer, pentaerythritol tetraacrylate (PET4A), investigate the modifying effect of the cross-linking monomer, pentaerythritol tetraacrylate (PET4A) and prepare a high-performance poly (vinyl acetate) (PVAc) emulsion for photosensitive adhesive with poly (vinyl acetate) (PVAc) emulsion as a substrate, so as to address the poor cross-linking density and water resistance of traditional diazo photosensitive adhesive. A PVAc emulsion containing reactive microgel structure was prepared by seed emulsion polymerization, which formed a micro gel network structure in the emulsion through the multifunctional crosslinking characteristics of PET4A. Through various tests and performance analysis of the emulsion and the photosensitive adhesive, the water resistance and solvent resistance of the photosensitive adhesive were analyzed. The results showed that when the addition amount of PET4A was 7.5% and 10% of the monomer, it could significantly improve the water resistance and solvent resistance of the photosensitive adhesive. In conclusion, based on the test results such as scratch resistance, it can be known that the PVAc emulsion for photosensitive adhesive prepared in this paper improves the water resistance and solvent resistance of the photosensitive adhesive by increasing crosslinking. Without adding hardening film solution, the effective scratch resistance of the printed screen exceeds 2 000 times.

Key words

PVAc / photosensitive adhesive / reactive micro gel / water resistance and solvent resistance

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TIAN Chao, HUANG Yongbin, CHEN Liang, LU Jiehong, ZHAO Wenai, YUAN Teng. PVAc Emulsion Containing Reactive Micro Gel Structure and Its Application in Photosensitive Adhesive[J]. Packaging Engineering. 2025, 46(15): 184-190 https://doi.org/10.19554/j.cnki.1001-3563.2025.15.021

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