摘要 本测试首先以氢化松香、氢化松香甘油酯为原料采用逆转法工艺进行分离氢化松香施胶剂的制备,此时测患上施胶剂的粒径为562nm。在此基础上,采用搅拌球磨机对原料进行机械活化,考察了机械活化时间及搅拌转速对施胶剂粒径的影响。测试结果表明,机械活化作用对乳化工艺条件的改善、施胶剂的粒径漫衍及施胶度有显著的影响,当机械活化时间为5min、搅拌速率为300 r/min时,施胶剂的粒径为295nm。 将已经制备的阴离子分离松香胶乳液作为施胶剂进行抄纸测试,发现其在中性条件下具有较好的施胶度,并且通过CS单因素法测试证明,制备的阴离子分离氢化松香胶在纸张纤维上具有较好的留着性,同时,通过设计四因素四水平正交测试,探索了影响纸张施胶效果的主要因素,确定了最佳工艺。测试结果表明影响纸张施胶效果的主要因素为施胶剂用量及PAC用量。最佳施胶条件为:入网纸浆pH为7、施胶剂用量2%、PAC用量1.5%、CS用量0.5%、CaCO3用量15%,施胶顺序为正向施胶。通过验证性测试验证患上到的最佳施胶度为66.4s。 关键词:氢化松香分离氢化松香施胶剂机械活化施胶测试 Efect of mechanical activation on dispersed Hydrogenated rosin size's preparation and application ABSTRACT At the very beginning of our work,the dispersed rosin size was prepared from hydrogenated rosin,hydrogenated rosin ester by the inverse reversed method.And the particles diameter is 562nm.At the basis of above,with astirring-type ball mill,The effects of different mechanical activating time and stirring speed on dispersed rosin size had been examined respectively.The results showed that the mechanical activation caused big changes of the size prepared way,the particles diameter and sizing degree.The dispersed rosin size with particles diameter of 295nm could be prepared under the following conditions:mechanical activating time 5min and stirring speed 300r/min. The present investigation relates to sizes for apapermaking,more specifically to an intermal sizing which works very well in papermaking under neutral conditions.The anionic rosin sizes have good retentio nbehavior,almost don't need the retention agent.through Orthogonal experiment,get the most inportant factors are size and PAC.The best sizing effect are gotten under the following conditions:size 2%,PAC 1.5%,CS 0.5%,CaC03 15%(for the amount of absolutely dry pulp),7 pH value,direct sizing.By the Verification Experiment gain the best sizing dagree is 64.5s. Key words:Hydrogenated rosin,dispersed Hydrogenated rosin size,mechanical activation,sizing experiment 造纸术是中华民族对世界文明的杰出贡献,而施胶则是造纸过程中一道重要的工艺。纸张施胶始于何时,无从稽考,但据分析敦煌石室中西凉建初十二年(公元416年)写本《律藏初分》的纸张,发现纸浆中加入了小粉糊剂。唐代已开始用植物胶代替小粉作为施胶剂,并且辅以使用明石[1],而国外用动物胶对纸张施胶最早在1337年,用植物施胶时间更迟,约莫在十八世纪,比我国迟了九百多年[2]。用小粉施胶,确实可以防止洇水,但也有一定缺点,这种纸张不能存放太久,不然容易卷曲,小粉层也会发生龟裂,从而造成墨迹脱落。直到使用明矶来帮助植物胶料(如杨桃藤之类)吸附到纸张纤维间,才相应地解决了小粉施胶的不足[3]。真正意义上的纸张浆内施胶剂是1807年由德国的Illig发明的松香皂-铝矶施胶体系[4],即将天然松香皂化后,加入水中,经硫酸铝处置惩罚就可达到施胶目的。天然松香也因此作为施胶剂一直使用到今日。其发展历程大致可以分为以下四个阶段:传统的天然松香皂化胶阶段、改性巩固松香胶阶段、反应型合成施胶剂阶段和高分离松香胶阶段。 本文摘自一夜情俱乐部,欣赏全文请直接进入。 "七"乐无穷,尽在新浪新版博客,快来体验啊~请点这儿进入~ 选PAC加药装置请认准上海龙亚品牌，O21-6l57088,6l557288。龙亚PAC加药装置——一旦拥有，别无他求。O(∩_∩)O~。
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