造纸助留剂改性膨润土浆液制备  

Preparation of Modified Bentonite Slurry as Microparticle Retention Aid in Papermaking

作　　者：刘娜[1,2] 刘温霞[1] 

机构地区：[1]山东轻工业学院制浆造纸工程省级重点学科 [2]天津科技大学材料与化学工程学院,天津300222

出　　处：《非金属矿》2005年第4期20-22,共3页Non-Metallic Mines

摘　　要：对造纸助留剂柠檬酸钠改性膨润土浆液的制备工艺进行了研究:利用柠檬酸钠可制备浓度为5%～15%的优质膨润土浆液,其工艺条件为:柠檬酸钠加入量为膨润土的10%,常温改性24h,膨润土pH值8.5,原土以采用Wyoming型钙基土为宜。制备的柠檬酸钠改性膨润土浆液(浓度为10%),与碳酸钠常规改性膨润土浆液(浓度5%)相比,流动性更好,对纸浆的助留效果相近。The modified bentonite slurry used as microparticle retention aid is prepared via reacting bentonite with sodium citrate.The experiment results show that the bentonite slurry with concentration of 5%～15% can be obtained and displays a higher retention effect.It is preferred to be prepared at its natural pH with 10% of sodium citrate (based on the weight of bentonite)under room temperature. The original calcium Wyoming-bentonite is a preferred alternative compared with Cheto-bentonite or the natural sodium bentonite.The bentonite slurry of 10% density modified by sodium citrate shows a better fluid property than that of 5% density modified by sodium carbonate,and their retention performances are similar.

关 键 词：改性膨润土 造纸助留剂 浆液 柠檬酸钠 制备工艺 工艺条件 助留效果 浓度 加入量 pH值 碳酸钠 流动性 g型 相比 

分 类 号：TQ424.2[化学工程] TS727.2[轻工技术与工程—制浆造纸工程]