【cationic polyacrylamide】造纸助滤剂 造纸助留剂,造纸助滤剂,由于兼有留着和助滤作用统称造纸助留助滤剂(也有叫驻留助滤的) 造纸助留助滤剂是一种水溶性支链结构的有机高分子聚合物,造纸助留助滤剂的作用是增大纸浆上网时的留着率,对细小纤维和填料(碳酸钙、二氧化钛和高岭土等)有优良的助留作用,节浆明显。 增强滤水性,降低成形,压榨和干燥过程的脱水能耗。从而增加纸产量,减少能耗,降低成本。而且还有增加湿纸和干纸强度的作用,可保持湿部化学条件稳定,改善成纸匀度和纸张物理性质。由于出水中细小纤维及填料量减少了也减轻了废水处理的负荷。 目前造纸助留助滤剂主要是聚丙烯酰胺类,也有淀粉改性产品。 聚丙烯酰胺大多是进口阳离子产品,有粉体和乳液。乳液产品由于助留助滤效果好,流动性好,溶解速度快,目前以占据半壁江山。 乳液有油包水和水包水两种,油包水产品各项性能都不错,唯一弱点是含有矿物油成分,成本较高,而且油分进入纸浆造成二次污染,还可能影响成纸品质。水包水乳液产品同时具有油包水乳液的优势,而且由于生产是在水相中分散聚合,成本较低。无污染,不影响成纸品质。水包水产品在国外有广泛的应用。在国内也开始逐渐应用。随着现代纸机车速的提高,草浆和废纸浆作为造纸原料的大量采用,以及日益严格的环保法规,使得造纸过程面临许多困难,如纸机网部脱水困难,废纸中的油墨及胶粘物污染网子、毛毯、辊子等等。助留助滤剂可以有效解决上述问题。其主要作用在于以下几个方面: 1. 增加纸机网部留着,减少纤维原料和湿部其他助剂的流失; 2. 改善纸机操作状况,提高纸机车速和产量; 3. 降低纸机排放废水的污染负荷和降低纸张生产成本。它属于低中高阳离子度或非离子、高分子量的助留助滤剂。具体物理特性如下表所示:产品外观: 透明或白色可自由流动的颗粒单位 指标分子量 万 600-800 固含量 % ≥90.0 离子度 PZ-M系 阳离子(低中高) PZ-D系 阳离子(低中高) PZ-N系 非离子粒度 % > 10目 % < 100目 低于2% 低于10% 表观密度 0.80 残留单体 % < 0.1000 不溶物 Pts < 10 粘度 (1%水溶液,25℃) mpa 100~10000 1 g/L浓度在25℃去离子水中的溶解时间 分钟 60 溶液外观 透明轻度粘性溶液储存温度 ℃ 0-35 储存期 月 至少24 PZ-M,PZ-D,PZ-N系列产品专门用于处理造纸湿部中遇到的各种问题,其独特的作用机理使它能起到如下作用: 1. 助留助滤作用。PZ-M,PZ-D,PZ-N系列产品系列产品可增加网部纤维和其他湿部助剂的留着,加快网部的滤水和干部脱水,改善纸机操作状况,从而可提高纸机车速和产量,上海捷诚化工科技有限公司 JCH 改善纸页成型和强度,降低纸张生产成本。 2. 解决废纸原料引起的胶粘问题。由于采用废纸作为原料,特别是废旧纸箱中的胶粘物,添加剂及夹带杂质,往往会黏附在造纸机网部、毛毯、棍子和烘缸等部位上造成严重的生产问题。PZ-M,PZ-D,PZ-N系列产品可通过吸附,分散和絮聚原理有效地帮助解决胶粘问题。 3. 提高淀粉的留着,降低废水的COD超标问题,从而为使用淀粉作为层间增强剂创造有利条件。 ? 技术/效益指标 1. 纤维首程留着率可平均提高10%以上。 2. 灰份留着率明显增加,纸张销售利润增加还能节约填料成本。 3. 滤水性能大大提高,从而可保证车速相应提高8-10%(平均值)。 ? 在工厂实际应用中应注意的几个问题 1. 应根据工厂实际生产物料状况选择合适的产品类系。 2. 溶解粉状聚合物的水应是干净的水(如自来水),不能是污水。常温的水即可,通常不需要加温。水温过高会使聚合物产生热降解,从而影响使用效果。一般自来水的pH值都满足配制聚合物溶液的要求。强酸性、或强碱性的水不适合于用来配制聚合物的水溶液。 3. 溶解速时搅拌速度不宜过快,以防止高分子链发生机械剪切降解。搅拌桨末端线速度应小于8米/秒。溶解设备和输送管道不宜用铁制,因铁离子会对高分子链的降解起催化作用。溶解时间一般为40-60分钟。 4. 粉末加入容器时切勿太快,否则容易结团形成不溶物。 5. 助剂溶液的浓度一般为0.1%左右,即1 立方米水中加入1公斤粉剂。使用前应视最佳用量适当稀释。 6. 助剂用量一般在0.02-0.04%(对绝干浆而言)。 Henan MingTai chemical Co., LTD. Is located in northeast, located in shandong province and henan provinces junction, north near the original novel wu3 song dozen tiger place - yanggu county, south near the Yellow River, is that year, liu DengDaJun south degrees north and south of the arteries and transfixion sideses jingjiu railway construction chat with high-speed traders convenient to have brought for traffic. Now has a staff of 180 people, including technical personnel 7, management personnel 11, set outside agency 5, fixed assets total investment 28,000, 000 yuan. The company equipment is advanced, technical force is abundant, the main products are PAM, polyacrylic acid potassium, sodium carboxy methyl cellulose, zwitterion polymers, vinyl monomer multivariate copolymer, broad-spectrum slurry-supported agent, humic acid potassium, high temperature resisting salt resistant viscosify drop water loss, hydrolyzed polyacrylonitrile potassium, iron chromium lignin sulfonates, plants, 801 glue the plugging agents with drilling, theunidirectional pressure agent, cationic polyacrylamide, acrylamide acrylic acid sodium copolymer, low fluorescence prevent collapse agent, phenolic resin, preparing sulphonated sulphonated lignite, asphalt powder, preparing sulphonated without fluorescence prevent collapse collapse agent, prevent sticking-releasing agent, lubricant, various viscous agent, drop adhesive, emulsifier, lubricant, shale of various chemical agents such as tilting preparations, widely used in oil field, mining, paper making, textile, sewage treatment and other industries, the annual production reaches 35 million yuan, products are exported to tianjin, jiangsu, anhui, shaanxi, Inner Mongolia, xinjiang, etc. Quality is life, nearly 20 years, the company always adhere to the "credibility for the purpose, to the quality strives for the development" business philosophy, always put quality first, well-paid graduate students as a high-tech technology research personnel, actively organize attend various technical exchanges, and strive to improve the technical level and product quality, continuously strengthening internal management, adhere to the principle of goods directly to each user to ensure supply of qualified products. And each big oilfield long-term keeps good relationship of supply and demand. The good faith for this, to the prestige for the purpose, the company aims to sincere cooperation with the customer establishment of honesty and supply and demand relation, make full use of modern tools reduce cost of sales and curtail sales program, to our customers the most preferential price, with high credit win higher returns. Innovates strives for the development, by the good faith to beat the market, continuously enlarges science and technology investment, expand the scope of business. "Leap infinite, ChengDa universal", our company always adhere to the good enterprise image and the prestige, with the first-class quality of the work, we provide customers with high quality and efficient services.