Study on the thermal stability and combustion performance of polyurethane foams modified with manganese phytate

IF 1.1 4区工程技术 Q4 ENGINEERING, CHEMICAL

International Polymer Processing Pub Date : 2023-03-20 DOI:10.1515/ipp-2022-4278

Xu Zhang, Dehe Yuan, Simiao Sun, Handong Li, Zhi Wang, Hua Xie

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引用次数: 2

Abstract

Abstract A new environmental friendly flame retardant manganese phytate (MnPa) was prepared by a direct precipitation method and the polyurethane foam (PUF) modified with MnPa was obtained by a one-step all-water foaming method. The thermal stability and combustion performance of the MnPa-modified PUF (MnPUF) were investigated by using thermogravimetric (TG), thermal decomposition kinetics, smoke density characterization, limiting oxygen index (LOI) and UL-94 horizontal combustion test. The results indicated that the addition of MnPa significantly improved the thermal stability and combustion performance of the modified PUF. On the basis of the thermogravimetric analysis, Flynn-Wall-Ozawa method, Kissinger method and Coats Redfern method, it could be concluded that PUF with 7.5 wt% MnPa (MnPUF3) had the highest activation energy and the best thermal stability. Smoke density analysis, LOI and horizontal combustion analysis also showed that the addition of MnPa was positively correlated with smoke suppression, LOI value and burning time. The current research results can provide a reference for the subsequent flame retardant modification of PUF.

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植酸酶改性聚氨酯泡沫的热稳定性和燃烧性能研究

摘要采用直接沉淀法制备了新型环保型阻燃剂植酸锰(MnPa)，并采用一步全水发泡法制备了植酸锰改性聚氨酯泡沫(PUF)。通过热重(TG)、热分解动力学、烟密度表征、极限氧指数(LOI)和UL-94水平燃烧试验，研究了mnpa改性PUF (MnPUF)的热稳定性和燃烧性能。结果表明，MnPa的加入显著提高了改性PUF的热稳定性和燃烧性能。通过热重分析、Flynn-Wall-Ozawa法、Kissinger法和Coats Redfern法，得出了MnPa浓度为7.5 wt%的PUF (MnPUF3)具有最高的活化能和最佳的热稳定性。烟雾密度分析、LOI和水平燃烧分析也表明，MnPa的添加与烟雾抑制、LOI值和燃烧时间呈正相关。研究结果可为PUF的后续阻燃改性提供参考。

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来源期刊

International Polymer Processing 工程技术-高分子科学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

6 months

期刊介绍： International Polymer Processing offers original research contributions, invited review papers and recent technological developments in processing thermoplastics, thermosets, elastomers and fibers as well as polymer reaction engineering. For more than 25 years International Polymer Processing, the journal of the Polymer Processing Society, provides strictly peer-reviewed, high-quality articles and rapid communications from the leading experts around the world.