废旧腈纶毛线碱法水解制备高吸水性树脂研究

Study on the preparation of high water-absorbent resin by alkakine hydrolyzation process of waste orlon wool

报道了将废旧腈纶毛线用常压碱法水解 ,甲醛作交联剂制备高吸水性树脂的工艺过程 ,确定了水解反应工艺条件 :投料比例 m PAN∶ m Na OH∶ m H2 O=1∶ 0 .6∶ 8,水解反应温度 95～ 10 0℃ ,时间 7h。交联反应的工艺条件 :n甲醛 ∶ n丙烯腈 =0 .4 ,交联反应温度 95℃ ,反应时间 2 h。产品干燥条件为 :16 0℃干燥 2 h,80℃干燥 12 h。用红外光谱对产品结构进行了表证 ,得到吸水性树脂吸蒸馏水达到 770 g/ g,吸饱和食盐水达到 6 7g/

The synthesizing process and processing condition of the high water absorbent resin are reported in this paper,in which waste acrylon wool was hydrolyzed in ordinary pressure and methanal is used as crosslinker.The processing conditions are controlled as below: m PAN ∶ m NaOH ∶ m H 2O is 1∶0.6∶8,the hydrolyzed temperature is controlled in 95-100 ℃,the reaction time is 7 h.The crosslink reaction condition is defined as below:HCHO/PAN (molar ratio) is 0.4,the crosslink temperature is 95 ℃,the reaction time is 2 h.The products are dried at 160 ℃ in 2 h,and continuously dried at 80 ℃ in 12 h.The effects of viscosity of products and quality of absorbed water to the amount of water absorption are discussed;the structures are analyzed by IR.The results show that the high water absorbent resin can absorb 770 g distilled water per gram,67 g saturant salt solution per gram respectively.