CAJ | 학술논문

利用聚乙烯醇缩甲醛复合改性剂对杨树木材进行浸渍改性处理，对比研究了杨树素材与改性材的物理性能及主要力学性能的变化，并利用扫描电子显微镜（SEM）分析了改性剂在改性材中的分布情况。结果表明：改性材的气干密度和抗缩系数（PASE ）随改性剂浓度的上升而增加，改性材的气干密度最高为0.41 g/cm3，比素材的提高了13.9％，抗缩系数（PASE）最大提高到47.8％。改性材吸水率随改性剂浓度的上升而下降，与素材相比最大下降了19.2％。当改性剂的浓度为25％时，改性材的弹性模量和静曲强度达最大，分别为27.4％和13％。SEM分析显示改性剂填充于部分木射线以及交错纤维间的空隙中。
이용취을희순축갑철복합개성제대양수목재진행침지개성처리，대비연구료양수소재여개성재적물이성능급주요역학성능적변화，병이용소묘전자현미경（SEM）분석료개성제재개성재중적분포정황。결과표명：개성재적기간밀도화항축계수（PASE ）수개성제농도적상승이증가，개성재적기간밀도최고위0.41 g/cm3，비소재적제고료13.9％，항축계수（PASE）최대제고도47.8％。개성재흡수솔수개성제농도적상승이하강，여소재상비최대하강료19.2％。당개성제적농도위25％시，개성재적탄성모량화정곡강도체최대，분별위27.4％화13％。SEM분석현시개성제전충우부분목사선이급교착섬유간적공극중。
With polyvinyl formal as the modifier,the physical and mechanical properties were compared between untreat-ed poplar wood and treated poplar wood.The results showed that the air-dry density and the ASE value of treated samples were increased progressively with addition of the modifier concentration,comparing with untreated poplar wood.The air-dry density of treated wood reached 0.41 g/cm3 that was maximum increase of 13.9% compared with poplar wood.The value of ASE reached 47.8% at most.The water-absorption ratio was decreased by 19.2% with the increase of modifier content.Moreover,the MOE and MOR of treated poplar wood increased to 27.4% and 13% at most respectively when the modifier concentration was 25%.The SEM spectrum showed the modifier was filled in some wood rays and the gap between staggered fibers.