木浆纤维水刺复合不同加固结构纤网时的流失现象
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摘要
木浆纤维经气流成网后,分别与PP/PE(聚丙烯/聚乙烯)纺黏热轧非织造布、PP/PE短纤热轧非织造布、PP/PE短纤热风非织造布和涤纶水刺非织造布纤网叠合形成试样,通过水刺复合,观察水针冲击过程中不同加固纤网结构条件下木浆纤维的流失现象,研究木浆纤维的流失过程和机理,并分析非织造布纤网结构对木浆纤维流失的影响.试验表明:木浆纤维与非织造布纤网中的纤维缠结以摩擦作用为主,当水针冲击力大于纤维之间的摩擦力,纤维互相分离,木浆纤维易脱离纤网而流失;在相同压力的水针冲击条件下,木浆纤维与PP/PE纺黏热轧非织造布、PP/PE短纤热轧非织造布及PP/PE短纤热风非织造布纤网复合时其流失严重,流失率均高于8%,而涤纶水刺非织造布纤网适于与木浆纤维的缠结,木浆纤维的流失率低,仅为2.95%.
Wood pulp fiber web,which is formed through air-laid forming system,is combined with four nonwoven webs respectively,that is,PP/PE(polypropylene/polyethylene)fiber spunbond point bonded nonwoven,PP/PE staple fiber carded point bonded nonwoven,PP/PE staple fiber carded through-air bonded nonwoven and PET(polyester)fiber carded hydroentangled nonwoven,then integrated by hydroentangling to produce four coherent bi-layer fabrics.The wood pulp fiber loss phenomenon integrated with the second layer webs of different consolidated structures during the spraying of water jets is observed.The process and mechanism of wood pulp fiber loss is studied,and the impact of the nonwoven structures on the wood pulp fiber loss is analyzed.The experiments show that the entwining between wood pulp fiber and fiber in the web mainly is the result of friction,as the water impact force is greater than the friction between the fibers,fibers are separated,wood pulp fiber tends to leave the fiber web and lose.Under the same pressure of water jets spraying,when the PP/PE fiber spunbond point bonded nonwoven,PP/PE staple fiber carded point bonded nonwoven and PP/PE staple fiber carded through-air bonded nonwoven fiber webs are served as base materials respectively,the values of wood pulp fiber loss are great,all above 8%,but PET fibers spunlaced nonwoven fiber web optimizes wood pulp fiber entanglement and the value of wood pulp fiber loss is low,which only 2.95%.
Wood pulp fiber web,which is formed through air-laid forming system,is combined with four nonwoven webs respectively,that is,PP/PE(polypropylene/polyethylene)fiber spunbond point bonded nonwoven,PP/PE staple fiber carded point bonded nonwoven,PP/PE staple fiber carded through-air bonded nonwoven and PET(polyester)fiber carded hydroentangled nonwoven,then integrated by hydroentangling to produce four coherent bi-layer fabrics.The wood pulp fiber loss phenomenon integrated with the second layer webs of different consolidated structures during the spraying of water jets is observed.The process and mechanism of wood pulp fiber loss is studied,and the impact of the nonwoven structures on the wood pulp fiber loss is analyzed.The experiments show that the entwining between wood pulp fiber and fiber in the web mainly is the result of friction,as the water impact force is greater than the friction between the fibers,fibers are separated,wood pulp fiber tends to leave the fiber web and lose.Under the same pressure of water jets spraying,when the PP/PE fiber spunbond point bonded nonwoven,PP/PE staple fiber carded point bonded nonwoven and PP/PE staple fiber carded through-air bonded nonwoven fiber webs are served as base materials respectively,the values of wood pulp fiber loss are great,all above 8%,but PET fibers spunlaced nonwoven fiber web optimizes wood pulp fiber entanglement and the value of wood pulp fiber loss is low,which only 2.95%.
引文
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[8]王宝玉.木浆纤维表面化学特性与纸页强度关系的研究[D].广州:华南理工大学轻工与食品学院,2011:81-82.
[9]刘亚,程博闻,庄伟,等.竹浆黏胶纤维水刺非织造布加工工艺与产品性能[J].纺织学报,2009,30(7):55-56.
[10]于伟东,储才元.纺织物理[M].上海:东华大学出版社,2009.
[11]GRISHANOV S,TAUSIF M,RUSSELL S J.Characterisation of fibre entanglement in nonwoven fabrics based on knot theory[J].Composites Science and Technology,2012,72(12):1331-1337.
[12]陈函.CPC水刺复合非织造材料的成型和性能研究[D].上海:东华大学纺织学院,2008:38-39.
[2]张静峰,靳向煜,饶剑辉.木浆及木浆纸水刺非织造布的结构与性能[J].纺织学报,2005,26(3):51-53.
[3]张静峰,靳向煜.木浆纸水刺复合非织造布工艺与性能研究[J].非织造布,2005,13(3):18-20.
[4]张静峰,靳向煜.木浆水刺复合非织造布成形与性能研究[J].产业用纺织品,2005(7):19-22.
[5]王从南.纺黏与木浆复合的水刺擦拭布[J].非织造布,2002,10(1):1.
[6]柯勤飞,靳向煜.非织造学[M].上海:东华大学出版社,2008.
[7]POURMOHAMMADI A,RUSSELL S J,HFFELE S.Effect of water jet pressure profile and initial web geometry on the physical properties of composite hydroentangled fabrics[J].Textile Research Journal,2003,73(6):503-508.
[8]王宝玉.木浆纤维表面化学特性与纸页强度关系的研究[D].广州:华南理工大学轻工与食品学院,2011:81-82.
[9]刘亚,程博闻,庄伟,等.竹浆黏胶纤维水刺非织造布加工工艺与产品性能[J].纺织学报,2009,30(7):55-56.
[10]于伟东,储才元.纺织物理[M].上海:东华大学出版社,2009.
[11]GRISHANOV S,TAUSIF M,RUSSELL S J.Characterisation of fibre entanglement in nonwoven fabrics based on knot theory[J].Composites Science and Technology,2012,72(12):1331-1337.
[12]陈函.CPC水刺复合非织造材料的成型和性能研究[D].上海:东华大学纺织学院,2008:38-39.