| 木质原料水抽提物中单宁含量与石膏浆料凝固的关系 |
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| 引用本文： | 张奕. 木质原料水抽提物中单宁含量与石膏浆料凝固的关系[J]. 木材工业, 1992, 6(1): 8-11 |
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| 作者姓名： | 张奕 |
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| 作者单位： | 中国林科院木材工业研究所 |
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| 基金项目： | 中国林科院科学技术发展基金提供经费 |
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| 摘 要： | 通过对七种木质材料水抽提液中单宁含量的定量分析,确定水解类单宁是引起石膏浆料缓凝的重要化学物质之一,木质原料水抽提液对石膏浆料凝固和石膏凝固体强度的影响与其中单宁含量不呈显著相关。此外,山杨制造石膏刨花板的试验表明:用柞木水抽提液取代80%的商用缓凝剂Retardan P是可行的。
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| 关 键 词： | 石膏刨花板 缓凝剂 水抽提物 |
The relationship between the contents of tannin from water extractives of wooden materials and setting of gypsum slurry |
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| Zhang Yi. The relationship between the contents of tannin from water extractives of wooden materials and setting of gypsum slurry[J]. China Wood Industry, 1992, 6(1): 8-11 |
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| Authors: | Zhang Yi |
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| Abstract: | A quantitive analysis on tannin contents of 7 kinds of wooden materials and their wafer extractives was given in this study. The results indicated that there are no significant relationship between, the tannin contents from water extractires of the wooden materials and setting of gypsum slurry as the strength of gypsum prism, although the hydrolyzable tannins can retarded the hydration of gypsum slurry severely. In addition, a result obtained from a experiment of manufacturing gypsum-bonded particlehoard made from populus showed that 80% of commercial retarder Retardan P can be replaced by the water, extractives-from oak barks. |
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| Keywords: | Water extractives Tannin content Cypsum slurry Retarder |
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