Effect of Bio-Based Cobalt Alginate on the Fire Safety and Mechanical Properties for Epoxy Resin,Macromolecular Materials and Engineering

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Effect of Bio-Based Cobalt Alginate on the Fire Safety and Mechanical Properties for Epoxy Resin
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2021-09-13 , DOI: 10.1002/mame.202100466
Chang Liu ₁ , Ye Tao ₁ , Ying‐Jun Xu ₁ , Yun Liu ₁ , Ping Zhu ₁ , Yu‐Zhong Wang ₂

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There is a growing demand to develop epoxy resins (EP) with smoke suppression as well as satisfactory flame retardancy. Herein, bio-based cobalt alginate is successfully fabricated and incorporated into EP to prepare EP/Cobalt Alginate composites with better fire safety performance. The addition of cobalt alginate reduces the thermal-decomposition rate, temperature at maximum weight-loss rate of EP, whereas obviously improves the thermal stabilities at a higher temperature range. Furthermore, the addition of cobalt alginate substantially reduces the fire hazard of EP, resulting in 56.2% reduction in peak heat release rate, as well as 17.8% and 56.3% reduction in total smoke production and peak smoke production rate, respectively, compared with EP matrix. Moreover, the presence of cobalt alginate increases smoke-suppressant properties, according to the smoke density test. Additionally, the incorporation of cobalt alginate has no obviously destructive effect on the mechanical properties of EP, while EP/Cobalt Alginate-3 exhibits a 27.0% improvement in impact strength. In prospective, this study may provide a significant method for producing eco-friendly flame retardant EP.

中文翻译：

生物基海藻酸钴对环氧树脂防火安全和力学性能的影响

开发具有抑烟性和令人满意的阻燃性的环氧树脂 (EP) 的需求不断增长。在此，成功制备了生物基海藻酸钴并将其掺入EP中，制备出具有更好防火安全性能的EP/海藻酸钴复合材料。海藻酸钴的加入降低了EP的热分解率、最大失重率时的温度，而在较高温度范围内的热稳定性明显提高。此外，海藻酸钴的加入大大降低了EP的火灾危险性，与EP相比，峰值放热率降低了56.2%，总产烟量和产烟率分别降低了17.8%和56.3%矩阵。此外，海藻酸钴的存在增加了抑烟性能，根据烟密度测试。此外，海藻酸钴的加入对EP的机械性能没有明显的破坏作用，而EP/Cobalt Alginate-3的冲击强度提高了27.0%。前瞻性地，该研究可能为生产环保型阻燃剂EP提供一种重要的方法。

更新日期：2021-11-15

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