精品文献
杉木板材的特点
不同固含量低分子酚醛树脂浸渍改性杉木板材性能的研究
不同固含量低分子酚醛树脂浸渍改性杉木板材性能的研究
为改善杉木的物理力学性能,采用真空-加压浸渍工艺,对速生杉木进行低分子酚醛树脂增强改性处理,分析不同树脂增重率对改性杉木性能的影响,以及树脂在木材长度和厚度方向上的分布特点。结果表明,杉木经过固含量为10%、20%、30%的酚醛树脂浸渍处理后,其尺寸稳定性随树脂固含量的增加逐渐提高,静曲强度由64.5 MPa提高至75.0 MPa,弹性模量和表面硬度分别提高了6.1%、27.5%、48.2%和29.8%、63.1%、73.8%,但冲击韧性随着树脂增重率的增加而逐渐降低;树脂在木材长度方向上分布均匀,在厚度方向上木材表面多于其内部。
人工林杉木板材高温和常温组合干燥研究
人工林杉木板材高温和常温组合干燥研究
In this paper, a technique with combination of normal temperature drying and high temperature drying technology was introduced to dry Chinese Fir plantation board, the result with more than one year's researching showed that, the lumber dimension stability after drying was best when dried in combination method, and second when dried in normal temperature kiln while the worst in airdry. Meanwhile, the result also showed that not only was dimension stability increased but also the density of fir was increased, this fact made plantation fir a excellent material in furniture and interior decoration field. So primary conclusion was got that this combining way was considered one kind of lower drying cost, simple way and effective drying methods.