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以欧洲赤松(Pinus silvestris)和樟子松(Pinus sylvestris var.mongolica)为研究对象,在不同的温度条件下对木材进行高温(100℃、125℃、150℃、175℃)和汽蒸(100℃、125℃、150℃)处理,以脱除松木中的树脂。通过对比脱脂前后木材树脂含量的变化,考察不同处理方法和处理温度的脱脂效果。将经过脱脂处理和未经过脱脂处理的木材进行石蜡乳液浸渍,采用低场氢核核磁共振技术(LF-NMR)测定石蜡乳液在不同试材中的分布。研究结果表明:随着处理温度的升高,木材的脱脂率逐渐提高。树种对脱脂效果有影响,樟子松汽蒸处理后脱脂率高于高温处理,而欧洲赤松汽蒸处理脱脂率和高温处理接近,没有明显优势。脱脂处理后石蜡乳液渗透深度有显著提高。
Taking Pinus silvestris and Pinus sylvestris var. Mongolica as the research objects, the wood was subjected to high temperature (100 ℃, 125 ℃, 150 ℃, 175 ℃) and steaming (100) under different temperature conditions ° C, 125 ° C, 150 ° C) to remove the resin in the pine wood. By comparing the changes of resin content before and after degreasing, the effects of different treatments and degreasing treatments on temperature were investigated. The wood treated with degreasing and non-degreasing was immersed in paraffin emulsion. The distribution of paraffin emulsion in different samples was determined by low field hydrogen nuclear magnetic resonance (LF-NMR). The results show that: with the increase of treatment temperature, the degreasing rate of wood gradually increases. The effect of tree species on the degreasing effect is that the degreasing rate of Pinus sylvestris var. Mongolica is higher than that of high temperature treatment, but the degreasing rate and high temperature treatment of Steppe pine are close, which has no obvious advantage. After degreasing paraffin emulsion penetration depth has increased significantly.