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氧化铈对提高EVA/氢氧化镁复合材料的阻燃、机械和紫外线阻隔性能的协同作用

Synergistic Effect of Cerium Oxide for Improving the Fire-Retardant, Mechanical and Ultraviolet-Blocking Properties of EVA/Magnesium Hydroxide Composites.

作者信息

Hobson Jose, Yin Guang-Zhong, Yu Xiaoli, Zhou Xiaodong, Prolongo Silvia Gonzalez, Ao Xiang, Wang De-Yi

机构信息

IMDEA Materials Institute, C/Eric Kandel, 2, 28906 Getafe, Spain.

Escuela Politécnica Superior, Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda Km 1,800, 28223 Pozuelo de Alarcón, Spain.

出版信息

Materials (Basel). 2022 Aug 25;15(17):5867. doi: 10.3390/ma15175867.

DOI:10.3390/ma15175867
PMID:36079247
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9457504/
Abstract

Rare earth oxide particles have received important attention in recent years, and due to the wide diversity of promising applications, the need for this kind of material is predicted to expand as the requirements to use the current resources become more demanding. In this work, cerium oxide (CeO) was introduced into ethylene-vinyl acetate (EVA)/magnesium hydroxide (MDH) composites for enhancing the flame retardancy, mechanical properties and anti-ultraviolet aging performance. The target EVA/MDH/CeO composites were prepared by extrusion and injection molding, and the effects of the addition of the CeO were explored by thermogravimetric analysis (TGA), Differential Scanning Calorimetry (DSC), X-ray Diffraction (XRD), limiting oxygen index (LOI), UL-94, cone calorimetry test, and anti-ultraviolet aging test. Typically, the incorporation of the CeO allows a significant increase of the elongation at break and Young's modulus compared with EVA/MDH by 52.25% and 6.85%, respectively. The pHRR remarkably decreased from 490.6 kW/m for EVA/MDH to 354.4 kW/m for EVA/MDH/CeO composite. It was found that the CeO presents excellent synergism with MDH in the composites for the anti-UV properties in terms of mechanical properties preservation. Notably, the combination of CeO with MDH is a novel and simple method to improve the filler-polymer interaction and dispersion, which resulted in the improvement of the mechanical properties, flame retardancy and the anti-ultraviolet aging performance of the composites.

摘要

近年来，稀土氧化物颗粒受到了广泛关注，由于其具有众多有前景的应用，随着对现有资源利用要求的提高，预计对这类材料的需求将会增加。在本研究中，将氧化铈（CeO）引入乙烯-醋酸乙烯酯（EVA）/氢氧化镁（MDH）复合材料中，以提高其阻燃性能、力学性能和抗紫外线老化性能。通过挤出和注塑制备了目标EVA/MDH/CeO复合材料，并通过热重分析（TGA）、差示扫描量热法（DSC）、X射线衍射（XRD）、极限氧指数（LOI）、UL-94、锥形量热试验和抗紫外线老化试验，研究了CeO添加量的影响。通常，与EVA/MDH相比，CeO的加入使复合材料的断裂伸长率和杨氏模量分别显著提高了52.25%和6.85%。峰值热释放速率（pHRR）从EVA/MDH的490.6kW/m显著降低至EVA/MDH/CeO复合材料的354.4kW/m。研究发现，在复合材料中，CeO与MDH在抗紫外线性能方面具有优异的协同作用，能够保持力学性能。值得注意的是，CeO与MDH的组合是一种新颖且简单的方法，可改善填料与聚合物之间的相互作用和分散性，从而提高复合材料的力学性能、阻燃性能和抗紫外线老化性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/9aaa26d7a093/materials-15-05867-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/c4bfe0dce1e3/materials-15-05867-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/4c03d519e189/materials-15-05867-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/a4df09624ed3/materials-15-05867-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/bb651f580174/materials-15-05867-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/a8daf5fe6d87/materials-15-05867-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/b58aa4f4ee96/materials-15-05867-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/c79f29465bda/materials-15-05867-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/acf463cd2b59/materials-15-05867-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/9aaa26d7a093/materials-15-05867-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/c4bfe0dce1e3/materials-15-05867-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/4c03d519e189/materials-15-05867-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/a4df09624ed3/materials-15-05867-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/bb651f580174/materials-15-05867-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/a8daf5fe6d87/materials-15-05867-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/b58aa4f4ee96/materials-15-05867-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/c79f29465bda/materials-15-05867-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/acf463cd2b59/materials-15-05867-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0285/9457504/9aaa26d7a093/materials-15-05867-g009.jpg

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