实验分为落叶松单宁的化学合成改性和其水处理性能的检测两大部分。
This experiment include the chemical synthetic modification of larch extract tannin and the measure of its water treatment properties.
在实验过程中落叶松单宁两性水处理剂的合成主要分为三个阶段。
The synthesis of larch extract tannin amphoteric water treatment agent was divided into three phases.
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。
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.
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