增湿强剂PAEP的制备及性能  

Synthesis and Properties of Novel PAEP Wet Strength Agent

作　　者：范丹[1] 王海花[1] 李小瑞[1] 费贵强 刘艳[1] 

机构地区：[1]陕西科技大学教育部轻化助剂化学与技术重点实验室,陕西西安710021

出　　处：《精细化工》2016年第6期693-698,708,共7页Fine Chemicals

摘　　要：采用聚乙烯醇(PVA)对传统湿增强剂聚酰胺多胺环氧氯丙烷(PAE)树脂进行化学改性,制备了一种PAEP湿增强剂。并在抄纸过程中引入PAEP与有机硼复合湿强剂,进一步增加纤维间的交联。采用IR、SEM、Zeta电位仪、TG对其结构、性能进行了表征;探讨了PAEP在纤维中的吸附行为,以及PAE、PAEP、PAEP-有机硼用量对纸张湿强性能的影响。结果表明,随着PAEP加入量由2.5 mg/g增加到30 mg/g,其在纤维中的饱和吸附量从2.33 mg/g增加到8.14 mg/g,吸附效率由93.2%降低到27.1%;与PAE相比,经PAEP、PAEP-有机硼处理后的纸张热降解残渣量分别增多122.67%,269.60%;当PAEP-有机硼中有机硼的质量分数为50%(以PAEP质量计,下同)时,纸张的干、湿抗张指数分别提高22.66%和79.46%,抗张指数保留率增加46.35%。在相同质量下,与阳离子聚丙烯酰胺和阳离子淀粉相比,PAEP-有机硼复合湿强剂亦具有较佳的增强效果。A novel wet strength agent PAEP was prepared through chemical modification of polyamidepolyamine epichlorohydrin（ PAE） resin with polyvinyl alcohol（ PVA）. PAEP / organoboron composite wet strength agent was also introduced in the papermaking process to increase the crosslinking among fibers. The corresponding structure and properties were characterized by IR,SEM,Zeta potential analysis and TG. The adsorption behavior of PAEP in fiber and the effects of PAE,PAEP and PAEPorganoboron dosage on the wet strength of paper were investigated. It was found that the adsorption amount of PAEP in fiber increased from 2. 33 mg / g to 8. 14 mg / g with the increase of PAEP dosage from 2. 5 mg / g to 30 mg / g,whereas the adsorption efficiency decreased from 93. 2% to 27. 1%. In comparison with PAE,the thermal degradation residue of papers treated with PAEP and PAEPorganoboron increased by 122. 67% and 269. 60%,respectively. The dry,wet tensile index increased by 22. 66% and 79. 46% when the organoboron mass fraction in PAEP-organoboron was 50%（ based on the mass of PAEP）. And the retention rate of tensile index increased by 46. 35%. Compared with cationic polyacrylamide（ CPAM） and cationic starch,the PAEP-organoboron wet strength agent was also endowed with better strengthening efficiency.

关 键 词：聚乙烯醇 有机硼 湿增强剂 造纸化学品 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程] TS714