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可膨胀石墨、磷酸二乙酯铝和三聚氰胺聚磷酸盐作为玻璃纤维增强PA6中的阻燃体系

Expandable Graphite, Aluminum Diethylphospinate and Melamine Polyphosphate as Flame Retarding System in Glass Fiber-Reinforced PA6.

作者信息

Tomiak Florian, Schoeffel Angelina, Rathberger Klaus, Drummer Dietmar

机构信息

Institute of Polymer Technology, Friedrich-Alexander-University Erlangen-Nürmberg, Am Weichselgarten 10, 91058 Erlangen, Germany.

Bavarian Polymer Institute, Friedrich-Alexander-University Erlangen-Nürnberg, Dr. Mack Strasse 77, 90762 Fuerth, Germany.

出版信息

Polymers (Basel). 2022 Mar 21;14(6):1263. doi: 10.3390/polym14061263.

DOI:10.3390/polym14061263
PMID:35335591
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8951083/
Abstract

A flame retardant system based on expandable graphite (EG), aluminum diethylphosphinate (AlPI) and melamine polyphosphate (MPP) was investigated in glass fiber- (GF) reinforced polyamide 6 (PA6). Burning characteristics were evaluated via cone calorimeter, limiting oxygen index (LOI) and UL-94 tests. Thermogravimetric analysis (TGA) and coupled Fourier transform infrared spectroscopy (FTIR) was used to investigate the decomposition process as well as flame retardant modes of actions. Specifically, in the cone calorimeter tests, formulations containing EG showed excellent flame retardant properties for non-reinforced and reinforced PA6. The best performance was achieved for 25 wt.% glass fiber-reinforced PA6 containing solely 20 wt.% EG, corresponding to a measured pHRR of 134 kW/m and a total smoke production of 1.2 m. Higher glass fiber contents of 45 wt.% (30 vol.%) revealed a lower char volume, which was attributed to both the limited space available for expansion and the sheer-induced reduction in particle size during processing. All of the reinforced PA6 formulations only achieved V2 classifications, but this was at low filling degrees (10 wt.%) for both net EG or EG/AlPi/MPP combinations. For GF-reinforced PA6 containing EG/AlPi/MPP mixtures, a synergistic effect was found to improve the oxygen index up to 30.6%.

摘要

在玻璃纤维（GF）增强聚酰胺6（PA6）中研究了一种基于可膨胀石墨（EG）、次膦酸铝（AlPI）和三聚氰胺聚磷酸盐（MPP）的阻燃体系。通过锥形量热仪、极限氧指数（LOI）和UL - 94测试评估燃烧特性。采用热重分析（TGA）和傅里叶变换红外光谱联用（FTIR）研究分解过程以及阻燃作用模式。具体而言，在锥形量热仪测试中，含EG的配方对未增强和增强的PA6均表现出优异的阻燃性能。对于仅含20 wt.% EG的25 wt.%玻璃纤维增强PA6，性能最佳，对应的热释放峰值（pHRR）测量值为134 kW/m，总产烟量为1.2 m。45 wt.%（30 vol.%）的较高玻璃纤维含量显示出较低的炭体积，这归因于可用于膨胀的空间有限以及加工过程中剪切导致的粒径减小。所有增强PA6配方仅达到V2等级，但对于纯EG或EG/AlPi/MPP组合，这是在低填充度（10 wt.%）时实现的。对于含EG/AlPi/MPP混合物的GF增强PA6，发现有协同效应，可将氧指数提高至30.6%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/5b9db91ba322/polymers-14-01263-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/21b08f7ff5c5/polymers-14-01263-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/332b17fe8fd6/polymers-14-01263-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/133992398aee/polymers-14-01263-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/26270bc2ebe4/polymers-14-01263-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/696550cd5747/polymers-14-01263-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/4cd8e8f2b07d/polymers-14-01263-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/9c7a69c2bdfb/polymers-14-01263-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/1802970dfc38/polymers-14-01263-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/d2bb73f87deb/polymers-14-01263-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/5b9db91ba322/polymers-14-01263-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/21b08f7ff5c5/polymers-14-01263-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/332b17fe8fd6/polymers-14-01263-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/133992398aee/polymers-14-01263-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/26270bc2ebe4/polymers-14-01263-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/696550cd5747/polymers-14-01263-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/4cd8e8f2b07d/polymers-14-01263-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/9c7a69c2bdfb/polymers-14-01263-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/1802970dfc38/polymers-14-01263-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/d2bb73f87deb/polymers-14-01263-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/551b/8951083/5b9db91ba322/polymers-14-01263-g010.jpg

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