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《聚丙烯腈原丝预氧化设备及温度控制特性的研究》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、山东大学硕士学位论文旦坦旦旦，口口.口口.口....实际生产表明，该预气化炉具有设计合理，控温精度高、温度均匀性好、热效率高、$jI修方便的特点，可满足聚内烯睛原丝性能试验及高性能的碳纤维试验要求，是一种较理想的预氧化炉。关键词:热风:预氧化;温度:碳纤维ABSTRACTOnthebasisofanalysingthemajorprohlemsofstraight一Linepre-oxidizot](.nfurnacesappliedinourcountry,amingattheproblemsexistingatpresentsuchaswindvolum
2、ewhichcannotbeshownandcontrolled,badtemperatureuniformity,slowmovingspeedofcarbonfibers,lowquantity,highenergyconsumptionandsoon,anewtypepre-oxidizationfurnacewasdesigned,whosewindvolumeandtemperaturecan})。controlled,regulatedandshown.Itismadeupofhotwindfurnaceandpre-oxidizationroo
3、m.Intheprocesso#producingcarbonfibers,thepre-oxidizationtemperaturebelongstolow-temperaturecontrol，whichisfrom1900Cto21300C.Thepre-oxidizationfurnaceusedforproducingcarbenfibersmustsatisfytherequirementoftechnologicaltemperaturegradient.Atthesametime，temperaturecontrol]ingprecision
4、mustbeensuredwhoseuncertaintyisfrom+50Cto一5`C,otherwisecarbonfiherswillbreak.Inordertoensurewell-distributedtemperatureandthesuccessfulprocessofthepre-oxidizationreaction,reactionheatmustberemovedinstantaneouslytoavoidlocaltemperaturerisingbecausePre-oxidizationreactionisexothermic
5、reaction.Inmostofthecases,reactionheatcanberemovedbyflowingair.Ifthecoldairisdirect]yheatedinthemovingspaceoftheprecursor,thetemperaturewilleasilygoesbeyondthesetvaluebecauseofheatinertia.Inourcountry,thetempratureofexistingpre-oxidizationfurnacesarecontrolledattheupperlimitofits-c
6、ontrollingprecision,itisverydangerous.肠ingattheaboveproblems，weputforwardanewthoughtofhotwindpre-oxidization,whichmeansthatairmustbeheatedtothefixedtemperaturefirstlyandthenblownintothemovingspaceofprecursor.Withthehelpofelectricheatingcomponentslocatedinthechamberofthepre-oxidizat
7、ionfurnace,temperaturecanberegulatedslightlyandcontrolledtothefixedvalue.Theairenteringhotwindfurnaceiscontrolledandmeasuredbyflowmetres,sostableprocessofpre-oxidizationreactioncanbegurantteed.Thefurnacehasbeenmanufacturedbasedonsystemalic山、‘1拐厂1.Inc}odint;clvt;i、Icalculationofthef
8、urnacebodythickness,furnac
