聚酰胺多胺环氧氯丙烷的合成与应用

发布时间：2018-01-09 23:30

  本文关键词：聚酰胺多胺环氧氯丙烷的合成与应用　出处：《浙江理工大学》2017年硕士论文　论文类型：学位论文

  更多相关文章： PAE树脂 工艺改进 生产性试验 抗张强度 壁纸原纸

【摘要】：聚酰胺多胺环氧氯丙烷树脂(PAE树脂)是一种作为纸张湿强剂的造纸化学品。为了提高PAE树脂产品的市场竞争力,改善PAE树脂应用效果,通过实习对企业PAE树脂的生产情况进行跟踪,通过将PAE树脂作为单一造纸化学品添加于纸张的应用试验,具体研究了PAE树脂合成适宜的改进工艺,并对比工艺改进前后合成的PAE树脂在壁纸原纸上的使用情况,分析其应用效果。首先,跟踪原有PAE树脂的生产工艺,结合文献阅读以及企业设备条件,发现延长预聚物合成保温时间的改进措施可行性好且可操作性强。综合考虑后,采用延长聚酰胺多胺预聚物合成的保温时间,希望达到改善PAE树脂应用效果的目的。通过一段时间的生产试验跟踪检测,分析讨论,结果表明,比较适宜的合成条件为:向反应釜中先投入水60 kg和己二酸500 kg,搅拌均匀后,再控制速度加入二乙烯三胺370 kg(即酸胺摩尔比为1:0.95),反应温度控制在165℃,保温时间13h~14 h,注意反应过程中冷却水的收集。然后,将工艺改进前后合成的预聚物与环氧氯丙烷反应合成PAE树脂,并进行PAE树脂在纸张上的应用试验,结果表明,在以中顺木浆为浆料,定量为80 g/m~2的纸张上,PAE树脂添加量为20 kg/t纸时,对纸张的增强效果达到最佳,成纸的干抗张强度和湿抗张强度分别提高0.111 kN/m和0.023 kN/m。最后,将工艺改进前后合成的PAE树脂以及其他公司的PAE树脂,分别应用于定量为80 g/m~2、90 g/m~2和100 g/m~2壁纸原纸的用户生产性试验中,分析不同型号PAE树脂在壁纸原纸上的增强效果。通过对壁纸原纸的物理性能结果分析,在壁纸原纸生产过程中PAE树脂的最佳应用条件为:PAE添加量为20 kg/t纸,添加点位于压力筛出口。工艺改进后合成的PAE树脂应用后的成纸抗张强度和湿强度得到提高。通过延长聚酰胺多胺预聚物的合成保温时间的方法,根据PAE树脂生产性试验结果表明,工艺改进后的PAE树脂应用效果得到了改善,具备更强的市场竞争力。
[Abstract]:Polyamide polyamine epichlorohydrin resin (PAE) is a kind of paper chemicals used as wet strength agent for paper. In order to improve the market competitiveness of PAE resin and improve the application effect of PAE resin. The production of PAE resin in the enterprise was tracked through practice. Through the application experiment of adding PAE resin as a single papermaking chemical to paper, the suitable improved technology for the synthesis of PAE resin was studied in detail. And compare the use of synthetic PAE resin on wallpaper base paper before and after the process improvement, and analyze its application effect. First, follow up the original PAE resin production process, combined with literature reading and equipment conditions of the enterprise. It is found that it is feasible and feasible to improve the heat preservation time of synthesis of prepolymer. After comprehensive consideration, the heat preservation time of synthesis of polyamide polyamine prepolymer is prolonged. It is hoped to improve the application effect of PAE resin. Through a period of production test tracking, analysis and discussion, the results show that. The optimum synthesis conditions were as follows: 60 kg water and 500 kg adipic acid were injected into the reactor and stirred evenly. The reaction rate was controlled by adding diethylenetriamine (370kg) (the molar ratio of acid to amine was 1: 0.95g), the reaction temperature was controlled at 165 鈩，

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