The modification has been made on the black wattle tannin adhesive with sodium sulfite and the MUF concentrate so as to prepare out a tannin adhesive with good water-proof and better glue properties.
采用亚硫酸钠和三聚氰胺- 尿素- 甲醛预缩液对黑荆树单宁胶粘剂进行改性处理，制备具有良好的耐水性能和胶合性能的单宁胶粘剂。
Tannin fractions with different molecular weight distributions were obtained by purification of alcohol precipitation and fractionation of solvent extractions of black wattle bark tannins.
通过对黑荆树皮单宁进行醇沉纯化和溶剂萃取分级，可得到分子量分布范围不同的单宁级分。
The key technique of the new process of tannin extraction from black wattle bark is to divide the extraction into two steps.
采用分段浸取新工艺是黑荆树皮单宁提取的关键技术。
The reaction condintions for in-situ immobilization of tannin in black wattle barks and adsorption characterization of in-situ immobilized black wattle barks(ISIB) to Fe3+ were investigated.
本文对广西武鸣县黑荆树营养元素的组成特征以及营养元素与单宁相对含量、总量的关系进行了研究。
The reaction condintions for in-situ immobilization of tannin in black wattle barks and adsorption characterization of in-situ immobilized black wattle barks(ISIB) to Fe3+ were investigated.
本文对广西武鸣县黑荆树营养元素的组成特征以及营养元素与单宁相对含量、总量的关系进行了研究。
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