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以山毛榉材为试验材料,探究在烘箱温度为130℃,处理时间分别为2、4 h的条件下,低熔点石蜡、较高熔点SX105号石蜡和85#微晶蜡3种不同类型石油蜡注蜡处理对试材尺寸稳定性的影响。结果表明:在相同的温度和处理时间条件下,注蜡处理材的尺寸稳定性优于未处理材,高熔点石油蜡处理材的优势更加明显;3种石油蜡注蜡处理后的试材与未处理材相比,尺寸稳定性改善效果差异较大,其中微晶蜡处理材的尺寸稳定性改善效果最佳。另外,电镜观察发现,石油蜡进入了山毛榉材的表层并将细胞等组织填充,从而提高木材的尺寸稳定性。对样本弦向尺寸稳定性变化的数据进行理论回归,得到了不同石油蜡类型和处理时间下山毛榉材的尺寸稳定性理论模型,经检验,尺寸稳定性与石油蜡熔点、注蜡时间密切相关,相关系数为0.956 5。
Using beech as test material, we studied the effects of low melting point paraffin, higher melting point SX105 paraffin and 85 # microcrystalline wax on the properties of three different types of waxes at oven temperature of 130 ℃ and processing time of 2,4 h Effect of Wax Treatment on Dimensional Stability of Test Material. The results show that under the same temperature and treatment time, the dimensional stability of the wax-treated wood is better than that of the untreated wood, and the advantages of the high-melting-point petroleum wax wood are more obvious. Three kinds of petroleum wax- Compared with the untreated material, the effect of improving the dimensional stability is quite different, and the dimensional stability of the microcrystalline wax-treated material has the best effect. In addition, electron microscopy found that petroleum wax into the surface of beech wood and other cells filled with tissue, thereby increasing the dimensional stability of wood. The theoretical regression model of dimensional stability of beech wood with different petroleum wax types and treatment time was obtained by theoretical regression. The dimensional stability was closely related to the melting point and wax injection time of petroleum wax. The correlation coefficient is 0.956 5.