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面内平台应力是评估蜂窝纸板面内承载性能的重要指标,且蜂窝纸板性能极易受环境湿度的影响。该文试验分析蜂窝纸板厚度、芯层和面层对其面内平台应力的影响;基于不同相对湿度条件下蜂窝原纸的纵向屈服强度,建立了相对湿度影响的蜂窝纸板面内平台应力模型,并与试验实测数据进行比较验证。结果表明:纸板厚度和面纸性能对蜂窝纸板面内平台应力有较大影响,芯层性能对其影响较小;所建立模型能较准确地反映环境相对湿度对纸蜂窝结构材料面内平台应力的影响。借助该模型,无需大量的试验,即可估算其考虑相对湿度的面内平台应力,为蜂窝纸板的配纸和合理选用提供理论依据。
In-Plane platform stress is an important index to evaluate the in-plane bearing properties of honeycomb paperboard, and the properties of honeycomb paperboard are highly influenced by the humidity of the environment. In this paper, the influence of the thickness of honeycomb paperboard, the stress of the core layer and the surface layer on the in-plane platform was analyzed. Based on the longitudinal yield strength of honeycomb base paper under different relative humidity conditions, the in-plane stress model of honeycomb paperboard was established Compare with the experimental data to verify. The results show that the thickness of paperboard and the performance of the tissue paper have a significant effect on the in-plane stress of the honeycomb paperboard, and the influence of the core layer has little effect on the paperboard surface. The model can accurately reflect the influence of the relative humidity on the in-plane stress Impact. With this model, it is possible to estimate the in-plane stress of the platform considering the relative humidity without a large number of experiments, and provide a theoretical basis for the papermaking and rational selection of honeycomb paperboard.