造纸污泥基础特性及其在复合材料中的应用
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摘要
以造纸污泥的基础理化特性和资源化利用为研究对象,利用扫描电镜能谱仪(SEM-EDS)对污泥的微观形态和元素组成进行了分析,探讨了造纸污泥含量对木塑复合材料力学性能及吸水性能的影响。结果表明:造纸次级污泥pH值为中性,污泥中84.49%的纤维长度在250μm以下;造纸污泥可以替代部分纤维,用以增强木塑复合材料的性能,随着造纸污泥含量的增加,造纸污泥/木纤维/HDPE复合材料的冲击性能、吸水性能得到显著改善,但弯曲性能下降。当造纸污泥含量为30%时,复合材料的冲击强度为8.54 kJ/m~2,与未添加造纸污泥相比,提高了36.64%。
The physicochemical properties of pulping mill sludge and its resource utilization were investigated. The scanning electron microscope( SEM) and energy dispersive analysis( EDS) were used to research the micromorphology and elemental composition of sludge. The effect of paper sludge content on mechanical and water absorption properties of wood plastic composite were also researched. The results showed that the pH value of the secondary sludge was neutral,and the fiber length of 84. 49% in the sludge was below 250 μm. The study also suggested that amounts of wood fiber could be replaced with paper sludge to reinforce wood plastic composite. The impact strength and water absorption of paper sludge/wood fiber/high density polythene( HDPE) were improved significantly with paper sludge content increased,but it's bending strength and modulus decreased. When the content of paper sludge was 30%,the impact strength of composite was 8. 54 kJ/m~2.Compared with pure wood fiber/HDPE composite,it increased by 36. 64%.
The physicochemical properties of pulping mill sludge and its resource utilization were investigated. The scanning electron microscope( SEM) and energy dispersive analysis( EDS) were used to research the micromorphology and elemental composition of sludge. The effect of paper sludge content on mechanical and water absorption properties of wood plastic composite were also researched. The results showed that the pH value of the secondary sludge was neutral,and the fiber length of 84. 49% in the sludge was below 250 μm. The study also suggested that amounts of wood fiber could be replaced with paper sludge to reinforce wood plastic composite. The impact strength and water absorption of paper sludge/wood fiber/high density polythene( HDPE) were improved significantly with paper sludge content increased,but it's bending strength and modulus decreased. When the content of paper sludge was 30%,the impact strength of composite was 8. 54 kJ/m~2.Compared with pure wood fiber/HDPE composite,it increased by 36. 64%.
引文
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[12]KIM S,KIM H,PARK J C.Application of recycled paper sludge and biomass materials in manufacture of green composite pallet[J]Resources,Conservation and Recyling,2009,53(12):674-679.
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[14]梁梦杰,吕群,蔡培鑫,等.聚乙烯基木塑复合材料的吸水性及其影响[J].塑料,2012,41(6):46-49.
[2]中国造纸协会.2015中国造纸工业2015年度报告[J].中华纸业,2016,37(11):10-21.
[3]SON J,YANG H S,KIM H J.Physico-Mechanical properties of paper sludge-thermoplastic polymer composites[J].Journal of Thermoplastic Composite Materials,2004,17(6):509-522.
[4]唐志超.我国造纸固体废弃物处理现状及趋势[J].中华纸业,2010,31(18):6-10.
[5]LIKON M,TREBSE P.Recent advances in paper mill sludge management[J].Industrial waste,2012:73-90.
[6]DE ALDA J A G O.Feasibility of recycling pulp and paper mill sludge in the paper and board industries[J].Resources,Conservation and Recycling,2008,52(7):965-972.
[7]丛高鹏,施英乔,丁来保,等.造纸污泥生物质资源化利用[J].生物质化学工程,2011,45(5):37-45.
[8]田野.造纸污泥资源化利用的研究进展[J].江苏造纸,2015(1):37-39.
[9]KRIGSTIN S,SAIN M.Characterization and potential utilization of recycled paper mill sludge[J].Pulp Paper Canada,2006,107(5):29-32.
[10]MIGNEAULT S,KOUBAA A,RIEDL B,et al.Binderless fiberboard made from primary and secondary pulp and paper sludge[J].Wood and Fiber Science,2011,43(2):180-193.
[11]张安龙,潘美玲.造纸污泥的基础性质及资源化利用[J].纸和造纸,2011,30(1):50-53.
[12]KIM S,KIM H,PARK J C.Application of recycled paper sludge and biomass materials in manufacture of green composite pallet[J]Resources,Conservation and Recyling,2009,53(12):674-679.
[13]滕国敏.聚丙烯/木纤维复合材料的结构与性能的研究[D].上海:上海交通大学,2005.
[14]梁梦杰,吕群,蔡培鑫,等.聚乙烯基木塑复合材料的吸水性及其影响[J].塑料,2012,41(6):46-49.
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