聚丙烯酸酯压敏胶的热分解反应动力学及贮存寿命预测

IF 3.2 3区化学 Q2 POLYMER SCIENCE

e-Polymers Pub Date : 2023-01-01 DOI:10.1515/epoly-2022-0089

Bing‐yuan Li, Yingzi Li, Zongwen Tong, Hongbin Yang, Sen-Sen Du, Zhuozhen Zhang

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引用次数: 1

摘要

采用热重分析法(TGA)研究了聚丙烯酸酯压敏胶(PSA)在4、6、8和10 K·min−1升温速率下的热分解行为。采用微分法和积分法(Kissinger、一般积分、MacCallum-Tanner、Šatava -Šesták、Agrawal和Flynn-Wall-Ozawa)对聚丙烯酸酯胶粘剂热分解反应的动力学参数进行了分析，结果表明:聚丙烯酸酯胶粘剂的主要分解阶段开始于301℃，其活化能为142.68 kJ·mol−1，指前因子为109.55;分解机理符合Avrami-Erofeev方程，其分解动力学方程为:dα/dT = (109.55/β)[(1−α)/2][−ln(1−α)]−1exp(−1.7161 × 104/T)。用等转换法预测PSA在25℃下的储存寿命约为19年。

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Thermal decomposition reaction kinetics and storage life prediction of polyacrylate pressure-sensitive adhesive

Abstract The thermal decomposition behavior of polyacrylate pressure-sensitive adhesive (PSA) at heating rates of 4, 6, 8, and 10 K·min−1 was measured by thermogravimetric analysis (TGA). The kinetic parameters for thermal decomposition reaction of the polyacrylate adhesive were obtained from TG profile by differential method and integral method (Kissinger, general integral, MacCallum–Tanner, Šatava–Šesták, Agrawal, and Flynn–Wall–Ozawa), the results show that the main decomposition stage of the polyacrylate adhesive starts at 301°C and its activation energy is 142.68 kJ·mol−1, the pre exponential factor is 109.55, the decomposition mechanism obeys Avrami–Erofeev equation and its decomposition kinetic equation can be expressed as: dα/dT = (109.55/β)[(1 − α)/2][−ln(1 − α)]−1exp(−1.7161 × 104/T). The storage life of PSA at 25°C was predicted to be about 19 years by isoconversional method.

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来源期刊

e-Polymers 化学-高分子科学

CiteScore

5.90

自引率

10.80%

发文量

审稿时长

6.4 months

期刊介绍： e-Polymers is a strictly peer-reviewed scientific journal. The aim of e-Polymers is to publish pure and applied polymer-science-related original research articles, reviews, and feature articles. It includes synthetic methodologies, characterization, and processing techniques for polymer materials. Reports on interdisciplinary polymer science and on applications of polymers in all areas are welcome. The present Editors-in-Chief would like to thank the authors, the reviewers, the editorial staff, the advisory board, and the supporting organization that made e-Polymers a successful and sustainable scientific journal of the polymer community. The Editors of e-Polymers feel very much engaged to provide best publishing services at the highest possible level.