聚氨酯/苯丙杂化乳液的合成、表征和特性及其在复膜胶中的应用

doi:10.3724/SP.J.1095.2013.30040

摘要/Abstract

摘要： 由聚氨酯(PU)预聚物、丙烯酸丁酯和苯乙烯单体的乳液聚合制备了聚氨酯-苯乙烯-丙烯酸酯(PUSA)杂化乳液,1H NMR显示所得的PU预聚物由烯烃基团封端。 TEM表明，其粒径约为150 nm,且为颜色深浅不同的两部分所组成。随着PU含量的降低,杂化乳液的热稳定性增加。 DSC分析表明,所得杂化乳液有单一的Tg值,且处于聚氨酯和聚苯丙(PSA)乳液Tg值的中间。当将得到的杂化乳液用于纸塑和塑塑复合时,其剥离强度分别为14.1 N/2.5 cm和12.2 N/2.5 cm。

关键词: 聚氨酯, 乳液聚合, 水性杂化乳液, 复膜胶

Abstract: The polyurethane-styrene-acrylate(PUSA) hybrid latexes were prepared by emulsion polymerization of a mixture of polyurethane(PU) prepolymer, butyl acrylate and styrene monomers. The obtained PU prepolymer was end capped by vinyl groups based on 1H NMR results. The particles′ diameter was about 150 nm from the TEM. The thermostability of the hybrid latexes was improved when the content of PU was decreased, and the single Tg was located between those of PU and polystyrene-acrylate(PSA). When the resultant hybrid latexes were applied in paper-plastic and plastic-plastic laminating adhesives, the peel strengths were 14.1 N/2.5 cm and 12.2 N/2.5 cm, respectively.

Key words: polyurethane, emulsion polymerization, waterborne hybrid latexes, laminating adhesive

中图分类号:

O631

黄增芳, 瞿晓岳, 马军现. 聚氨酯/苯丙杂化乳液的合成、表征和特性及其在复膜胶中的应用[J]. 应用化学, DOI: 10.3724/SP.J.1095.2013.30040.

HUANG Zengfang*, QU Xiaoyue, MA Junxian. Synthesis, Characterization and Properties of the Hybrid Latexes of Polyurethane and Polystyrene-acrylate and Their Application in Laminating Adhesive[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.30040.

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