The practice show that quality and radioactivity of the product, which is made by gangue and some condensingagent, can meet related national regulation after 28 days' natural maintenance.
The methods for preparing structural material bonding agent by condensing the alkaline lignin in the wast liquor of soda pulping process with formaldehyde and phenol are described.
本文叙述了利用碱法制浆废液中的碱木素同苯酚、甲醛缩合制取结构材料粘合剂的方法。
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This method contains steps as follows: pre-processing raw material, adding extracting agent which contains ionic liquid, centrifuging, filtering, purifying and condensing the extracting liquid.