ABSTRACT
STUDY and PREPARATIoN OF BICOMPoNENT FIBER WITH HIGH DENSITY POLYETHYLENE
ABSTRACT
Based on the sufficient market surveys,the spinning process technology of PE/PP bicomponent fiber and the specifical requirement of the spinnability, flexibility,wholesomenessandthermal bonding performanceof HDPEforits applicationfieldswere known.Accordingto analyzingthemacro andmicro properties,processing rheological propertiesandmolecularchainstructureof 卸)PE used widely in domestic manufacturers,the molecular weight.the molecular weight distribution and the amount of comonomers added were determined,andthe quality standardof productwas established.The effect of chemical additives on the properties of product was researched,and from the valuation results,the best formation for resin produced was found.With adjustingthereaction temperature,pressureandthe amount of additives,the process technologyofresin producedwas determined.Based on meeting the spinnabilityof product bytheabove process,the product density was reduced, the limpness was enhanced,and the volatiles and ash content were strictly restricted,whichensurethe spinning packscouldbe chronically and steadily operated.0nthebasisofthe rheological property,crystallization property and thermal property of HDPE.a technically spinning pack was designed and developedto produce bicomponent fibre.Accordingto the effects of spinning temperature,fiber cross section,cooling condition,spinning speed, crystallizationandorientationoffiberstructureonthe properties of HDPE resin and bicomponent fibre,the spinning technology of the special resin was conformed.The product was valuated by the domestic PE/PP bicomponent fibre products and was accepted by them.The industrial and stable production of HDPE resin filled the gap.which is to produce the domestic specialized materials for PE/PP bicomponent fiber.
KEY WORDS:fiber,HDPE,rheologic property,polymerization reaction
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