Fire resistance performance of composite coating with geopolymer‐based bio‐fillers for lightweight panel application,Journal of Applied Polymer Science

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Fire resistance performance of composite coating with geopolymer‐based bio‐fillers for lightweight panel application
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-06-26 , DOI: 10.1002/app.49558
Muhammad Khairi Abdul Rashid ₁ , Nor Hafizah Ramli Sulong ₁ , Ubagaram Johnson Alengaram ₁

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Structural insulated panel (SIP) requires fire‐resistant coating due to its substrate having low melting point. This article presents the effect of filler and binder on fire resistance, thermal stability, and surface morphology of composite coating. Palm oil clinker filler‐type coatings made using ordinary Portland cement (OPC:POC), calcium aluminate cement (CAC:POC), and alkali‐activated geopolymer (GP:POC) binders were analyzed. GP:POC was then compared to other geopolymer‐binder type coating with different fillers such as rice husk ash (GP:RHA), metakaolin (GP:MK), and hybrid filler of POC and RHA (GP:POC‐RHA). It was found that geopolymer binder‐type specimens have better fire‐resistance due to low thermal conductivity caused by their porous microstructure and intumescence behavior. Then, the coating formulation was optimized in terms of thickness, alkaline activator ratio and curing regime which produced GP:RHA' that lasted almost 2 hours during flame exposure test. This article concludes that geopolymer‐binder type composite is a plausible fire‐resistant coating for SIP.

中文翻译：

具有基于地质聚合物的生物填料的复合涂料的耐火性能，适用于轻型面板应用

由于结构绝缘板（SIP）的基材熔点低，因此需要防火涂层。本文介绍了填料和粘结剂对复合涂层耐火性，热稳定性和表面形态的影响。分析了使用普通波特兰水泥（OPC：POC），铝酸钙水泥（CAC：POC）和碱活化地质聚合物（GP：POC）粘合剂制成的棕榈油熟料填料型涂料。然后将GP：POC与其他具有不同填料的地聚合物粘合剂型涂料进行比较，例如稻壳灰（GP：RHA），偏高岭土（GP：MK）以及POC和RHA的混合填料（GP：POC-RHA）。人们发现，由于多孔微结构和膨胀行为导致的导热系数低，地聚合物粘合剂型样品具有更好的耐火性。然后，在厚度，碱性活化剂比例和固化方式方面优化了涂料配方，产生了GP：RHA'，在火焰暴露测试中持续了将近2小时。本文得出的结论是，地聚合物粘合剂型复合材料是用于SIP的合理的耐火涂层。

更新日期：2020-06-26

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