Basalt/Polyacrylamide‐Ammonium Polyphosphate Hydrogel Composites for Fire‐Resistant Materials,Macromolecular Materials and Engineering

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Basalt/Polyacrylamide‐Ammonium Polyphosphate Hydrogel Composites for Fire‐Resistant Materials
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-12-08 , DOI: 10.1002/mame.202000582
Wen Jiang Zheng ₁ , Xiao Feng Cui ₁ , Wei Zou ₁ , Qian Chen ₁ , Hai Bo Zhang ₂ , Hu Yang ₁ , Jie Yan ₁

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Hydrogels containing a large amount of water are widely used as fire‐resistant materials. However, when exposed to fire, the organic polymer network of gel will burn in a short time as the contained water evaporates. For that, the fire‐retarding ammonium polyphosphate (APP) and woven basalt fibers are introduced in polyacrylamide (PAAm) hydrogels to improve the fire‐resistant performance. Thermo‐gravimetric tests indicating that the APP can prevent gel from decomposition effectively when the content is larger than 13 wt%. And the APP can form a foam layer on gel surface to protect it from burning. The basalt fibers are capable of absorbing heat and strengthening the gel. With the synergetic of APP and basalt fibers, the resultant basalt/PAAm‐APP composite with high mechanical strength exhibits excellent fire‐resistant performance. It can sustain the 1300 °C flame for as long as 15 min.

中文翻译：

玄武岩/聚丙烯酰胺-聚磷酸铵水凝胶复合材料，用于耐火材料

含有大量水的水凝胶被广泛用作耐火材料。然而，当暴露于火中时，凝胶中的有机聚合物网络会随着所含水的蒸发而在短时间内燃烧。为此，将阻燃的聚磷酸铵（APP）和编织的玄武岩纤维引入聚丙烯酰胺（PAAm）水凝胶中，以提高耐火性能。热重测试表明，当含量大于13 wt％时，APP可以有效防止凝胶分解。APP可以在凝胶表面形成泡沫层，以防止其燃烧。玄武岩纤维能够吸收热量并增强凝胶。通过APP和玄武岩纤维的协同作用，所得到的具有高机械强度的玄武岩/ PAAm‐APP复合材料具有出色的耐火性能。

更新日期：2021-02-15

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