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层间加填是将矿物填料直接添加在纸页层间,有利于提高填料在纸页中的留着率、降低白水浊度和优化抄纸湿部化学环境等。本实验选用滑石粉和碳酸钙为矿物填料,羧基丁苯胶乳为层间黏合剂,对瓦楞原纸成形过程中填料的形状、粒径对成纸物理强度的影响进行了研究。结果表明:在其他条件不变的情况下,以碳酸钙为填料的成纸物理强度性能优于滑石粉。当碳酸钙用量为25%(对绝干浆),羧基丁苯胶乳用量为2%时,以全废纸抄造瓦楞原纸的相关物理强度指标可达到国家标准(GB 13023-1991)要求。
Layer filling is the direct addition of mineral fillers in the paper between the layers, is conducive to increasing filler retention in the paper, reducing the turbidity of white water and optimize the wet paper chemical environment. In this experiment, talc and calcium carbonate were used as mineral fillers and carboxylated styrene-butadiene latex as interlayer adhesive. The effects of filler shape and particle size on the physical strength of corrugated paper were studied. The results show that the physical strength of paper with calcium carbonate is better than that of talc under the other conditions. When the amount of calcium carbonate 25% (on dry pulp), the amount of 2% carboxylated styrene-butadiene latex, the physical strength index of corrugated paper made from waste paper can reach the requirements of the national standard (GB 13023-1991).