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意杨木片双螺旋挤榨单元的形态及表面特征(PDF/HTML)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2015年04期
Page:
111-115
Column:
研究论文
publishdate:
2015-07-20

Article Info:/Info

Title:
Morphological and surface characteristics of twin-screw squeezed unit of poplar wood chips
Article ID:
1000-2006(2015)04-0111-05
Author(s):
LIU Xiujuan12ZHOU Bingliang1CHEN Ling1XU Xinwu1* FAN Ganghua3
1. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;
2.Shanghai Wood Industry Research Institute, Shanghai 200051, China;
3. Jiangsu Jinwo Machinery Company Limited, Zhenjiang 212415, China
Keywords:
twin-screw method squeezed unit morphology surface characteristics wood-based panel
Classification number :
S781
DOI:
10.3969/j.issn.1000-2006.2015.04.019
Document Code:
A
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 normal particleboard and fiberboard with standard-satisfied TS, IB, MOR, and MOE values.

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Last Update: 2015-07-31