阳离子型丙烯酸酯纸张湿强剂应用效果

以苯乙烯、丙烯酸异辛酯、甲基丙烯酸缩水甘油酯为单体,以十六烷基三甲基氯化铵为乳化剂,过硫酸钾为引发剂,采用"核-壳种子乳液聚合"的方法合成了阳离子型聚苯乙烯-丙烯酸异辛酯-甲基丙烯酸缩水甘油酯(CPSEG),并探讨了其作为纸张增湿强剂的应用条件。结果表明:CPSEG能有效提高纸张湿强度和干强度,并且使纸张具有很好的柔韧性。固化温度对纸张湿强度有一定影响,用量为9%,固化温度为140℃时,湿强度可达到38.9%。固化促进剂可降低CPSEG的用量和固化温度。在添加2%DMP-30的条件下,CPSEG用量为6%,固化温度为105℃时,湿强度可达22.5%。用SEM对CPSEG增强纸进行了表征,证明了CPSEG与纸张纤维发生了交联反应,在纤维表面形成了一层防水保护膜。

Application of Cationic Acrylic Emulsion Used as Paper Wet-Strength Additive

In this research,CPSEG wet-strength agent was gained by using styrene,ethylhexyl acrylate,glycidyl methacrylate as monomer,hexadecyl trimethyl ammonium chloride as emulsifier,and potassium persulfate as initiator through the method of emulsion polymerization.en the application conditions of CPSEG were studied.e results showed that: CPSEG can improve the dry strength and wet strength of paper effectively.And the paper has good flexibility.Curing temperature is key to increase the effciency of the CPSEG.e wet strength reaches 38.9% when the dosage of CPSEG is 9% at the curing temperature of 140℃.e curing accelerator can reduce the dosage of CPSEG and curing temperature.e wet strength is 22.5% when the dosage of CPSEG is 6% at 105℃ while adding 2% DMP-30.Paper with and without CPSEG wet-strength agent were characterized by SEM,It is proved that crosslinking reaction is produced between CPSEG and the fiber.A waterproof protective film is formed on fiber surface.