对羧甲基羟乙基瓜尔胶(CMHEG)在阔叶木漂白化学机械浆中的增强性能、助留助滤性能和纸张白度进行了研究。实验结果表明:当CMHEG用量为0.6%时,纸张获得较好的增强效果,相比原纸抗张指数提高21.3%,耐破指数提高38.1%,撕裂指数提高22.2%。该用量下,CMHEG对纸料的助留助滤有一定改善,而对纸张白度影响较小,其取代度对纸张的增强和助留助滤性能产生一定影响。 Carboxyl methylhydroxyethyl guar (CMHEG) in hardwood bleaching chemical mechanical pulp enhance performance, retention and drainage properties and paper whiteness were studied. The experimental results show that when the content of CMHEG is 0.6%, the paper has a better enhancement effect, which is 21.3% higher than that of base paper, 38.1% bursting index and 22.2% tear index. Under this dosage, the CMHEG has a certain improvement on the retention and drainage of the paper stock, but has a smaller effect on the whiteness of the paper. The degree of substitution of CMHEG has some influence on the enhancement of the paper and the retention / drainage aid.