废弃非织造布再利用的前处理及应用研究
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摘要
钢铁、食品等领域废弃的非织造布逐年增多,这些非织造布大多不可自然降解,这不仅给相关企业带来巨大压力,也造成了环境污染。针对这一现象,以铝带生产中过滤用的废弃非织造布为对象,分析了回收再利用的可行性。确定了非织造布的最佳清洁方式,并利用示差扫描量热测试(DSC)和红外光谱(FTIR)分析确定其成分。通过二甲苯溶液溶解的方法制备得到再生聚对苯二甲酸乙二醇酯(PET)纤维,并将再生PET纤维与线性低密度聚乙烯(LLDPE)通过热压成型技术制备了PET/LLDPE复合膜。研究表明,再生PET纤维粗细均匀,表面光滑,纯度较高。与纯LLDPE相比,PET/LLDPE复合膜的拉伸强度和模量得到显著提高。该研究不仅为建材用复合板材的制备提供理论指导,也为废弃非织造布再利用提供一条途径。
Recently,the wasted non-woven fabrics from metal,food and other fields have increased greatly.Most of the non-woven fabrics cannot be degraded naturally,which not only brings urgent stress to the related companies but also leads to environmental pollution.In this thesis,the wasted non-woven fabrics used in production of aluminium strip for filtering were utilized to study the feasibility of recycling.The optimum cleaning way was determined and the components of the wasted non-woven fabrics were identified by differential scanning calorimeter(DSC)and Fourier transform infrared spectroscopy(FTIR).The recycled polyethylene terephthalate(PET)fiber was prepared by dissolving in xylene solution,and then used to prepare PET/linear low density polyethylene(LLDPE)composite membranes by the hot compression molding technique.The research showed that the recycled PET fiber is uniform with smooth surface and high purity.The tensile strength and modulus of the PET/LLDPE composite membranes increase significantly compared with those of neat LLDPE.This study not only provides theoretical guidance for the preparation of composite panels for building materials,but also offers a way for reuse of the wasted nonwoven fabrics.
Recently,the wasted non-woven fabrics from metal,food and other fields have increased greatly.Most of the non-woven fabrics cannot be degraded naturally,which not only brings urgent stress to the related companies but also leads to environmental pollution.In this thesis,the wasted non-woven fabrics used in production of aluminium strip for filtering were utilized to study the feasibility of recycling.The optimum cleaning way was determined and the components of the wasted non-woven fabrics were identified by differential scanning calorimeter(DSC)and Fourier transform infrared spectroscopy(FTIR).The recycled polyethylene terephthalate(PET)fiber was prepared by dissolving in xylene solution,and then used to prepare PET/linear low density polyethylene(LLDPE)composite membranes by the hot compression molding technique.The research showed that the recycled PET fiber is uniform with smooth surface and high purity.The tensile strength and modulus of the PET/LLDPE composite membranes increase significantly compared with those of neat LLDPE.This study not only provides theoretical guidance for the preparation of composite panels for building materials,but also offers a way for reuse of the wasted nonwoven fabrics.
引文
[1]刘伟昆.废旧涤纶、涤棉纺织品化学回收工艺技术研究[D].北京:北京服装学院,2012.
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[6]张帆,杨术莉,杜平凡.废旧纺织品回收再利用综述[J].现代纺织技术,2015,23(6):56-62.
[7]严姣,焦晓宁.农用非织造材料的回收及其生物可降解纤维的应用[J].合成纤维工业,2013,36(6):37-40.
[8]张丽,刘梁森,邱冠雄.废弃纺织材料回收利用的研究进展[J].纺织学报,2013,34(4):153-160.
[9]JAIN S,CHATTOPADHYAY S,JACJERAY R,et al.Surface modification of polyacrylonitrile fiber for immobilization of antibodies and detection of analyte[J].Analytica Chimica Acta,2009,654(2):103-110.
[10]沈经纬,黄文艺,左胜武,等.PP/PET原位成纤复合材料的增强效应[J].复合材料学报,2004,21(4):33-39.
[11]徐祥华,曹庆波.再生PET纤维生产技术的探讨[J].聚酯工业,2013,26(4):32-34.
[12]GRAY F M,SMITH M J,SILVA M B.Identification and characterization of textile fibers by thermal analysis[J].Journal of Chemical Education,2011,88(4):476-479.
[13]HOUCK M M.8-The use of spectroscopy for textile fiber identification[J].Identification of Textile Fibers,2009:158-164.
[2]周发明,杨中开,唐世君,等.再生聚酯及其纤维的结构性能研究[J].合成纤维工业,2014,37(1):13-16.
[3]徐祥华,曹庆波.再生PET纤维生产技术的探讨[J].聚酯工业,2013,26(4):32-34.
[4]ALUN S,ULCAY Y.Improvement of waste recycling in PET fiber production[J].Journal of Polymers&the Environment,2004,12(4):231-237.
[5]王建坤,高晓平,刘玉梅.纺织废料再生纤维增强混凝土力学性能的研究[J].天津工业大学学报,2005,24(4):12-15.
[6]张帆,杨术莉,杜平凡.废旧纺织品回收再利用综述[J].现代纺织技术,2015,23(6):56-62.
[7]严姣,焦晓宁.农用非织造材料的回收及其生物可降解纤维的应用[J].合成纤维工业,2013,36(6):37-40.
[8]张丽,刘梁森,邱冠雄.废弃纺织材料回收利用的研究进展[J].纺织学报,2013,34(4):153-160.
[9]JAIN S,CHATTOPADHYAY S,JACJERAY R,et al.Surface modification of polyacrylonitrile fiber for immobilization of antibodies and detection of analyte[J].Analytica Chimica Acta,2009,654(2):103-110.
[10]沈经纬,黄文艺,左胜武,等.PP/PET原位成纤复合材料的增强效应[J].复合材料学报,2004,21(4):33-39.
[11]徐祥华,曹庆波.再生PET纤维生产技术的探讨[J].聚酯工业,2013,26(4):32-34.
[12]GRAY F M,SMITH M J,SILVA M B.Identification and characterization of textile fibers by thermal analysis[J].Journal of Chemical Education,2011,88(4):476-479.
[13]HOUCK M M.8-The use of spectroscopy for textile fiber identification[J].Identification of Textile Fibers,2009:158-164.