Aman Mohammed M, Mohammed Bashar S, Al-Yacouby Ahmad Mahamad
Department of Civil and Environmental Engineering, Universiti Teknologi Petronas, Seri Iskandar 32610, Malaysia.
Polymers (Basel). 2025 Aug 21;17(16):2262. doi: 10.3390/polym17162262.
Hydrogen-induced steel embrittlement imposes a technical difficulty in facilitating effective and safe hydrogen transportation via pipelines. This investigative study assesses the potency of polyvinylidene fluoride (PVDF)-graphene-based composite coatings in the inhibition of hydrogen permeation. Spin coating was the method selected for this study, and varying graphene concentrations ranging from 0.1 to 1wt% were selected and applied to 306 stainless steel substrates. A membrane permeation cell was used in the evaluation of hydrogen permeability, while the impact of graphene loading on coating performance was analyzed using the response surface methodology (RSM). The outcomes showed an inversely proportional relationship between the graphene concentration and hydrogen ingress. The permeation coefficient for pure PVDF was recorded as 16.74, which decreased to 14.23, 12.10, and 11.46 for 0.3, 0.5, and 1.0 wt% PVDF-G, respectively, with the maximum reduction of 31.6% observed at 1.0 wt%. ANOVA established statistical significance, along with indications of strong projection dependability. However, the inhibition reduction stabilized with increasing graphene concentrations, likely caused by nanoparticle agglomeration. The results support the notion of PVDF-graphene's potential as a suitable coating for the transformation of pipelines for hydrogen transport infrastructure. This research will aid in the establishment of suitable contemporary barrier coating materials, which will enable the safe utilization of hydrogen energy in the current energy transportation grid.
氢致钢脆化给通过管道实现有效且安全的氢运输带来了技术难题。本调查研究评估了聚偏氟乙烯（PVDF）-石墨烯基复合涂层在抑制氢渗透方面的效能。本研究选择旋涂法，选取了0.1至1wt%的不同石墨烯浓度并将其应用于306不锈钢基材上。使用膜渗透池评估氢渗透率，同时采用响应面法（RSM）分析石墨烯负载量对涂层性能的影响。结果表明石墨烯浓度与氢进入量之间呈反比关系。纯PVDF的渗透系数记录为16.74，对于0.3、0.5和1.0 wt%的PVDF-G，其渗透系数分别降至14.23、12.10和11.46，在1.0 wt%时观察到最大降幅为31.6%。方差分析确定了统计显著性，同时表明具有很强的预测可靠性。然而，随着石墨烯浓度的增加，抑制作用的降低趋于稳定，这可能是由纳米颗粒团聚引起的。结果支持了PVDF-石墨烯作为氢运输基础设施管道改造合适涂层的潜力这一观点。本研究将有助于建立合适的当代阻隔涂层材料，这将使氢能在当前能源运输网络中得到安全利用。
