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首页> 外文期刊>Journal of Applied Polymer Science >Effect of expandable graphite and ammonium polyphosphate on the thermal degradation and weathering of intumescent fire-retardant coating
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Effect of expandable graphite and ammonium polyphosphate on the thermal degradation and weathering of intumescent fire-retardant coating

机译：可膨胀石墨和铵多磷酸盐对膨胀型阻燃涂层热降解及耐候的影响

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This research aims to study the effect of ammonium polyphosphate and expandable graphite on the intumescent coating formulations (ICF). The coating presented in this research article is based on carbon source expandable graphite (EG), blowing agent melamine, acid source ammonium polyphosphate (APP), epoxy resin as a binder with polyamide amine. The stability of the developed coating was verified at 950 degrees C for 1-hour fire test. The results showed that the coating is stable and well bond with the steel substrate. The char was characterized by using FESEM, XRD, FTIR, DTA, TGA, XPS, Py-GCMS and Weathering Test. The morphology of the char was studied by SEM of the coating after furnace fire test. XRD and FTIR show the presence of graphite, borophosphate; boron oxide and sassolite in the residual char. TGA and DTG disclosed that EG improved the residual mass of coating. XPS analysis showed the char residue of IF5-APP-EG contains carbon and oxygen contents 47.50 and 40.70, respectively. Py-GCMS analysis described that the IF5-APP-EG released less gaseous compounds. The weathering test illustrated that's the char expansion of coatings samples was decreased due to the presence of a humid environment and UV light. The IF5-APP-EG showed the maximum char expansion, lower substrate temperature and high residual weight among the studied formulations.
机译：本研究旨在研究聚磷酸铵和可膨胀石墨对膨胀涂料配方（ICF）的影响。本文介绍的涂料是以碳源可膨胀石墨（EG）、发泡剂三聚氰胺、酸源聚磷酸铵（APP）、环氧树脂和聚酰胺胺为粘合剂。在950℃下进行1小时的燃烧试验，验证所开发涂层的稳定性。结果表明，涂层稳定，与钢基体结合良好。通过FESEM、XRD、FTIR、DTA、TGA、XPS、Py-GCMS和风化试验对炭进行了表征。通过对涂层的扫描电镜（SEM）分析，研究了炭化物的形貌。XRD和FTIR表明石墨、硼磷酸盐的存在；残炭中的氧化硼和硫铝石。TGA和DTG显示，EG改善了涂层的残余质量。XPS分析表明，IF5-APP-EG的残炭碳和氧含量分别为47.50和40.70。Py GCMS分析表明，IF5-APP-EG释放的气态化合物较少。风化试验表明，由于潮湿环境和紫外光的存在，涂层样品的炭膨胀降低。在所研究的配方中，IF5-APP-EG显示出最大的炭膨胀、较低的基质温度和较高的残余重量。

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