【Key words】 refined alkali lignin； modified alkali lignin； rigid polyurethane foam； mechanical property； aging resistance
基于6个网页-相关网页
改性碱木质素磺酸钠A Modified sodium base lignin-sulfonate
改性碱木质素磺酸钠C Modified sodium base lignin-sulfonate-C
改性碱木质素磺酸钠B Modified sodium base lignin-sulfonate
改性碱木质素磺酸钠 Modified basic sodium lignosulfonate
改性碱木质素作为三次采油牺牲剂具有广阔的应用前景。
Therefore the modified lignin has bright application prospects as a sacrificial a-gent in the tertiary oil recovery.
改性碱木质素作为三次采油牺牲剂具有广泛的应用前景。
Therefore the modified lignin has bright prospect as sacrificial agent in the tertiary oil recovery.
选用合适的复合酰化体系，通过电位滴定，测定了工业碱木质素及其改性树脂的羟值。
Hydroxyl values of straw alkali lignin and modified lignin resin were determined by potentiometric titration in suitable composite acylation system.
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