【作者】 顿秋霞； 裴继诚； 张方东； 郑雪莉； 章海涛；

【Author】 DUN Qiu-xia;PEI Ji-cheng;ZHANG Fang-dong;ZHENG Xue-li;ZHANG Hai-tao;Tianjin Key Lab of Pulp&Paper,Tianjin University of Science&Technology;Novozymes(China)Investment Co.Ltd.;

【机构】 天津科技大学天津市制浆造纸重点实验室； 诺维信(中国)投资有限公司；

【摘要】 选取甘油三酸酯、聚丙烯酸酯、聚乙烯醇、聚醋酸乙烯酯、丁苯胶乳、松香酸和棕榈酸为胶黏物模型物,添加到二氯甲烷抽提后的漂白硫酸盐针叶木浆中,分析了胶黏物模型物的沉积性能,并研究了温度和pH值对胶黏物沉积性能的影响。结果显示,聚丙烯酸酯对纸浆中大胶黏物的产生和纸浆滤水性能影响较大,而甘油三酸酯对浆料滤液性能影响较大。随温度升高,添加模型物的纸浆中产生大胶黏物的数量和面积均增大、浆料的滤水性能变差、纸浆滤液阳离子需求量和浊度增大。由酸性到碱性变化时,人工合成型胶黏物模型物在纸浆中产生的大胶黏物量呈增加的趋势,浆料滤水性能变差,而树脂类模型物产生大胶黏物的量降低,滤水性能在碱性条件下稍好;在碱性条件下纸浆滤液的阳离子需求量较大;添加人工聚合物的纸浆滤液浊度受浆料的酸碱性影响较小,但树脂类模型物纸浆的滤液浊度在酸性条件下明显大于碱性条件下的浊度。更多还原

【Abstract】 The triglycerides,polyacrylate,polyvinyl alcohol,polyvinyl acetate,styrene-butadiene latex,rosin acid and palmitic acid were used as the model compounds of stickies which added to the bleached kraft softwood pulp that extracted with dichloromethane.It was analyzed that deposition properties of stickies’ model and studied the effects of temperature and pH on stickies deposition performance.The results showed that:Pulp added with polyacrylate produced more macro stickies and had poorer water filtering properties than samples added with other model compounds,and triglycerides had the most impact on the filtrate.Pulp added model compounds had a large number and area of macro-stickies in high temperature and the filtration of pulp performance deteriorated,filtrate’ s cationic demand and turbidity increased.The amount of macro-stickies coursed by model of artificial polymers increased and the filtration of pulp performance deteriorated when it Changed from acidic to alkaline,but the amount of macro-stickies coursed by resins reduced and the filtration of pulp performance was slightly better performance under alkaline conditions.Filtrate’ s cationic demand was greater under alkaline conditions.The effect on turbidity of filtrate with artificial polymer was slight.But the turbidity of samples with model compounds of resin was significantly greater than that under alkaline conditions.更多还原