木质素羧酸盐分散剂在40%腈菌唑可湿性粉剂中的应用

• 作 者: 贺政 庞煜霞 楼宏铭 温伟能 邱学青
• 机 构: 华南理工大学化学与化工学院,
• 出 处: 精细化工
• 发表日期: 2014年11期
• 关键词: 木质素 羧酸盐 腈菌唑 木质素羧酸盐 可湿性粉剂 配方 表面活性剂 悬浮率 造纸黑液 羧甲基

研究造纸黑液羧甲基化改性制备的木质素羧酸盐CML对农药的分散性能,并对其在40%腈菌唑可湿性粉剂(wettable powder,WP)中的配方进行筛选。结果表明,羧甲基化改性可大幅度提高碱木质素的羧基含量,使其水溶性和分散性得到较大改善。通过和润湿剂、助分散剂复配,筛选了CML用于40%腈菌唑WP的优选配方,常温和热贮悬浮率分别可达到91.9%和88.1%,润湿时间少于90 s,满足可湿性粉剂的指标。

The dispersibility of carboxymethylcellulose CML prepared by carboxymethylation of papermaking black liquor was studied. The formulation of 40% myclobutanil wettable powder (WP) was screened. The results showed that carboxymethylation can greatly improve the carboxyl content of alkali lignin, water solubility and dispersibility to be greatly improved. The optimum formulation of CML for 40% myclobutanil WP was screened through compounding with wetting agent and dispersant, the suspending rates of room temperature and hot storage were 91.9% and 88.1% respectively, the wetting time was less than 90 s, Wettable powder to meet the indicators.