资源描述:
《纤维素溶喷非织造材料的制备及结构与性能的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、西北师范大学硕士学位论文II工艺条件相差不大的情况下,小的泵供量可制备表面光滑的纤维,增大泵供量将倾向于制备具有卵石细砾般粗糙表面纤维;纤维素溶喷非织造布具有良好的吸水性能,其吸收水的质量可达自身质量的7倍左右;随接收距离(DCD)的增大,纤网的厚度增大,纤维平均直径先减小后增大,纤网的结晶度增大,纵横向断裂强度先增大后减小;随泵供量的增加,纤维平均直径线性上升,随热风温度的提升,纤维平均直径先减小后增大,纵横向断裂强度下降;随模头温度的升高,纤维平均直径下降,纤网的结晶度与纵横向断裂强度均增大;随热风速率的提升,纤维平均直径先减小后增大,
2、力学性能增强。关键词:溶喷;纤维素非织布;溶解;流变性能;结构;性能万方数据III西北师范大学硕士学位论文AbstractInrecentyears,themelt-blownnonwovenstechnologyisdevelopingveryrapidlyintheinternational.Mostofthemelt-blownnonwovensaremadefromthepetroleum-baserawmaterials.However,withtherapiddevelopmentofindustry,people’senvir
3、onmentalprotectionconsciousnessisstrengthening,Thelargeusageofthesenon-biodegradablematerialscancauseincreasinglyseriousenvironmentalproblems.Soitispreferredthatthedegradablepolymersareusedastherawmaterialsofmelt-blownnonwovens.Lyocellfibersaredevelopedinthe1990s,asaenviro
4、nmentalfriendlyfiber,N-methylmorpholine-N-oxide(NMMO)hasbeenusedtodissolvenaturalcellulosepulpintoasolutionand,anovelregeneratedcellulosefiberswasproducedbyaspecialspinningmethods.Thisshortprocessconsumedlessenergyanditswastewasnaturaldegradation.Fullymeettheaboverequireme
5、nts.Spraysolutioncellulosenonwovenstechnologyriseandrapiddevelopmentinrecentyearsasanewtypeofnon-woventechnology,ItcombinesLyocellfibertechnologymaterialsandtraditionalprinciplesofmelt-blowntechnology,andproducetheproducthassomefeaturessyntheticmaterialhavenot.Suchas:havin
6、galargerspecificsurfacearea,porosityandsmallpore,athinnerweb,transparencyadvantages,Therefore,afilterhavingmoreexcellent,breathable,barrierproperties,heatinsulationpropertiesandoilresistance,Alsohasagoodantistaticeffect,moisturewarm,soft,comfortable,easytostaineasilybiodeg
7、radable,etc.Makingitanimportantrawcloth,civilianclothingandwipewithcloth,and,Solutioncellulosespraymethodalsomakesnon-wovenfabricbecomesarenewableresource.Attractingmanyscholarswideattentionathomeandabroad.Thedomesticjettechnologyforcellulosedissolvedalmostnorelevantreport
8、s.Typeofenvironmentallyfriendlymaterialsforsustainabledevelopmentresearch,alsofordomestic