南京林业大学学报（自然科学版）Issue(4)：111-115,5.DOI:10.3969/j.issn.1000-2006.2015.04.019
意杨木片双螺旋挤榨单元的形态及表面特征
Morphological and surface characteristics of twin-screw squeezed unit of poplar wood chips
摘要
Abstract
A new slim wood unit was made by squeezing poplar wood chips with a twin-screw pulping machine. The chips with the size of (16-50) mm×(10-25) mm×(3-8) mm were pre⁃softened by high pressure steam heating at 0.2 MPa for 10, 30, and 50 min, respectively. Three reverse screw rabbet width of the twin⁃screw pulping machine was tried, i.e., 12, 16, and 20 mm. The morphological and surface characteristics of the squeezed units of poplar wood chips were investigated, which were evidently different from traditional thermal⁃mechanical pulping fibers. Results showed that heated poplar wood chips could be squeezed into slender units with twin⁃screw pulping method. The shape of the units was evidently different from traditional TMP fibers. Most squeezed units were shorter than 10 mm, and the average length were 4.45 mm, 5.08 mm and 6.18 mm, respectively, for the three reverse screw rabbet width. The machine parameters had significant influence on the shape of squeezed units. With 12-20 mm reverse screw rabbet width, the length of the squeezed units were controlled in 2-10 mm. And the boards made with above units had good properties equivalent to nor⁃mal particleboard and fiberboard with standard⁃satisfied TS, IB, MOR, and MOE values.关键词
双螺旋磨浆法/挤榨单元形态/表面特征/人造板Key words
twin-screw method/squeezed unit morphology/surface characteristics/wood-based panel分类
农业科技引用本文复制引用
刘秀娟,周秉亮,陈玲,徐信武,范刚华..意杨木片双螺旋挤榨单元的形态及表面特征[J].南京林业大学学报（自然科学版）,2015,(4):111-115,5.基金项目
江苏高校优势学科建设工程资助项目 （）
