超声水/NaOH协同DMDHEU处理对臭椿材吸湿尺寸稳定性的影响机制研究
Effect of Ultrasonic Water/NaOH Synergistic DMDHEU Treatment on the Hygroscopic Dimensional Stability of Ailanthus Altissima Wood
[目的]探究超声/NaOH协同DMDHEU处理对臭椿材尺寸稳定性的影响及作用机制。[方法]选用约 20 年树龄臭椿木材,制成 2 cm×2 cm×2 cm(弦向×径向×轴向)臭椿木块,进行NaOH(质量浓度 1%、4%)、超声(320 W,25 kHz,2 h)预处理,再用氮羟甲基树脂(DMDHEU)浸渍处理。测试DMDHEU浸渍前后样品的绝干密度、增重率和吸湿尺寸稳定性(11.3%RH,25℃)变化。采用扫描电子显微镜、衰减全反射傅里叶变换红外…查看全部>>
[Objective]The objective of this study was to investigate the impact and contribution mechanism of ultrasonic water/NaOH synergistic DMDHEU treatment on the hygroscopic dimensional stability of Ailanthus altissima wood.[Method]Ailanthus altissima wood,approximately 20 years old,was selected and made into 2 cm×2 cm×2 cm(tangential×radial×longitudinal)blocks.The samples were pretreated with NaOH(1 wt%,4 wt%)and ultrasonication(320 W,25 kHz,2 h)and then impregn…查看全部>>
韩陶玉;卢满满;何正斌;伊松林;钱京;
臭椿 DMDHEU 超声水预处理 超声碱预处理 吸湿尺寸稳定性
Ailanthus altissima DMDHEU Ultrasonic-water pretreatment Ultrasonic-alkali pretreatment Hygroscopic dimensional stability
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