原位聚合法制备颜料耐晒黄-G微胶囊的研究  

STUDY ON PREPARATION OF MICROCAPSULE OF LIGHT FAST YELLOW G BY IN-SITU POLYMERIZATION

作　　者：荀育军[1] 刘又年[1] 舒万艮[1] 熊联明[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《印染助剂》2003年第6期13-16,共4页Textile Auxiliaries

摘　　要：研究了用密胺树脂将颜料耐晒黄-G微胶囊化处理的特点及方法,在70℃、n(三聚氰胺):n(甲醛)=1:2.5、pH值8.5的条件下制得密胺树脂预聚体,预聚体按囊材质量分数30％的比例加入颜料的溶液,分散剂的质量分数控制在3％左右,pH值控制在5.5左右,反应2 h后,过滤、干燥,即得产品.用差热分析(DTA)和扫描电镜(SEM)对产品进行表征.微胶囊化耐晒黄-G解决了耐晒黄-G使用时耐热温度低、容易出现褪色的问题.Preparation method and characteristics of microcapsulated light fast yellow G with melamine -formaldehyde resin were presented. Melamine-formaldehyde precondensate was prepared from formaldehyde reacting with melamine with molar ratio of 1:2.5 ,at 70℃, pH=8.5, and then it was added to the solution of the pigment at the ratio of 30%(on weight of capsulating material). The concentration of dispersant was controlled to about 3%, pH was adjusted to about 5.5. After reacting for 2 hours, the product was obtained after filtering and drying. DTA and SEM characterized the product. The drawbacks such as poor resistance to heat and easy fading of light fast yellow G were overcome by microcapsulation.

关 键 词：颜料 耐晒黄—G 密胺树脂 微胶囊化处理 产品性能 原位聚合法 制备 

分 类 号：TQ620.6[化学工程—精细化工]