Kev sib xyaw extrusion txheej txheem yog tib txoj kev rau cov ntaub ntawv polymer, tshwj xeeb tshaj yog cov yas, txav los ntawm cov khoom mus rau industrialization.Cov ntaub ntawv polymer niaj hnub tab tom tsim los ntawm cov khoom siv ua haujlwm zoo polymer, cov khoom siv ua haujlwm tshiab polymer thiab cov ntaub ntawv polymer dav dav nrog tus nqi qis thiab kev ua haujlwm siab.
Kev sib xyaw extrusion txheej txheem yog tib txoj kev rau cov ntaub ntawv polymer, tshwj xeeb tshaj yog cov yas, txav los ntawm cov khoom mus rau industrialization.Niaj hnubcov ntaub ntawv polymertab tom tsim los ntawm cov khoom siv ua haujlwm zoo polymer, cov khoom siv ua haujlwm polymer tshiab thiab cov ntaub ntawv polymer dav dav nrog tus nqi qis thiab kev ua haujlwm siab.Kev ua tau zoo ntawm cov khoom siv polymer yog cov yam ntxwv ntawm lub zog tshwj xeeb, zoo heev corrosion kuj, puas thiab ua haujlwm yooj yim, uas yog qhov tseem ceeb rau kev txhim kho kev lag luam hauv teb chaws thiab kev ruaj ntseg hauv teb chaws.Vim nws qhov tshwj xeeb ua haujlwm thiab hom tshwj xeeb, cov khoom siv polymer tshiab tau siv dav hauv kev lag luam xws li kev tiv thaiv ib puag ncig ecological, cov ntaub ntawv ua haujlwm, cov khoom siv biomedical, cov khoom sib cais membrane, lub zog hloov dua siab tshiab thiab lub zog cia tshuab.Kev ua tau zoo ntawm cov ntaub ntawv polymer dav dav thiab tus nqi qis ntawm engineering plastics tseem yog qhov tseem ceeb ntawm kev tshawb fawb tam sim no thiab kev tsim cov ntaub ntawv polymer thiab ib qho kev ntsuas tseem ceeb los nthuav dav daim ntawv thov ntawm cov yas thiab engineering yas.
Ntxiv rau qee qhov kev ua haujlwm ntawm cov khoom siv tshuaj polymer, cov ntaub ntawv polymer tshiab muaj ntau qhov sib txawv ntawm lub cev thiab tshuaj lom neeg.Pom nrog kev txhim kho ntawm cov ntaub ntawv polymeric tshiab, thaj chaw ntawm daim ntawv thov dav dav, rau cov khoom siv polymer siab sib xyaw extrusion kuj tau muab tso rau hauv kev thov siab dua, cov cuab yeej sib xyaw thiab cov cuab yeej siv tsis zoo qee cov khoom siv polymer siab tshiab kom tau raws li qhov xav tau ntawm kev sib xyaw, yog li ntawd, txoj kev loj hlob ntawm hom tshiab mixing extrusion tshuab thiab khoom siv, kom tau raws li cov kev xav tau ntawm cov ntaub ntawv polymer tshiab rau industrialization, tov khoom BNR;Nyob rau tib lub sijhawm, kuj tseem yog qhov kev hloov pauv tsis tu ncua ntawm kev txhim kho cov khoom siv polymer ua niaj hnub no.
- 1.Application ntawm ntxaib ntsia hlausib tov extrusiontshuab
Kev sib xyaw niaj hnub thiab kev sib xyaw extrusion tshuab yog muab cov ntaub ntawv polymer uas twb muaj lawm nrog ntau hom polymers lossis ntxiv lwm cov ntaub ntawv los txhim kho kev sib xyaw ntawm cov khoom sib txawv, txhawm rau txhim kho cov khoom zoo, lossis muab cov khoom siv raw nrog cov khoom tshiab, ntxiv ntau yam tshiab rau. tsev neeg polymer.Hauv kev lag luam plastics tag nrho, kwv yees li 60% ntawm cov yas yuav tsum tau muab sib xyaw thiab hloov kho los tsim cov khoom tshiab.Feem ntau ntawm cov txheej txheem kev ua haujlwm nyuaj no tau ua tiav hauv cov khoom siv sib xyaw uas sawv cev los ntawm ntxaib ntsia hlau extruder.Siv tib qho kev taw qhia ntxaib ntsia hlau los sib xyaw extrusion muaj cov hauv qab no zoo:
(1) Kev sib xyaw ua haujlwm zoo thiab plasticizing kev ua tau zoo, uas tuaj yeem lav tag nrho cov dispersion uniformity thiab kev ua tau zoo ntawm ntau yam ntaub ntawv tom qab sib tov, thiab tsim nyog rau kev ua haujlwm nyuaj xws li sau, sib xyaw, iav fiber ntau, reactive extrusion thiab volatile tshem tawm ntawm ntau yam resins thiab yas.
(2) Lub tog raj kheej thiab cov ntsia hlau tuaj yeem paub txog "lub tsev thaiv" ua ke, thiaj li ua tiav ntau lub hom phiaj, ntau txoj haujlwm.
(3) ntsia hlau meshing, cov nyhuv tu tus kheej yog qhov zoo;Cov khoom ua tiav cov txiaj ntsig zoo dua qub thiab kev ua haujlwm zoo tshaj plaws, uas tuaj yeem tshem tawm cov pa roj lossis monomer tsim hauv kev sib xyaw thiab plasticizing.
(4) siab ceev ceev, muaj peev xwm ntau lawm, tsawg zog noj ib chav tsev ntau lawm, pom tseeb zog txuag nyhuv.
Raws li cov txiaj ntsig saum toj no, kev sib koom ua ke ntxaib-ntsia hlau sib xyaw tshuab extrusion muaj qhov zoo dua tsis tuaj yeem hloov pauv hauv cov khoom siv polymer ua cov khoom siv thiab tuav txoj haujlwm tseem ceeb hauv cov khoom siv polymer hloov kho.
Tam sim no, hom tshiab ntxaib-ntsia hlau compounding thiab qhov tseeb daim ntawv thov ntawm extrusion technology yog mas tshwm sim nyob rau hauv cov nram qab no yam: kev npaj ntawm nanometer cov ntaub ntawv hloov kho yog siab polymer cov ntaub ntawv nruj Gao Ren hom uas tsis muaj nqi, siab polymer alloy cov ntaub ntawv, electromagnetic shielding. Cov ntaub ntawv polymeric, cov ntaub ntawv polymer tshiab rau cov yas degradable, ntim hluav taws xob, masterbatch tshiab thiab ntau yam kev ua haujlwm masterbatch, thiab lwm yam, kuj tuaj yeem siv rau cov khoom siv tshiab (xws li ntoo yas sib xyaw) tsim thiab npaj cov khoom tshiab, ntxiv rau kuj tseem siv tau rau polymer grafting, polycondensation ntawm reactive extrusion.Cov kev lag luam koom nrog suav nrog cov khoom siv hauv tsev, tsheb, kev sib txuas lus, hluav taws xob technology, kev tiv thaiv lub teb chaws, aerospace, kev tiv thaiv ib puag ncig, tshuaj lom neeg kev lag luam, khoom siv hauv tsev, hluav taws xob, thiab lwm yam.
- 2.Kev txhim kho ntawm cov khoom siv polymer tshiab extrusion tshuab nrog ntxaib ntsia hlau
Tam sim no, txoj kev loj hlob ntawm cov ntaub ntawv polymer tshiab, uas yog tsim los ntawm nanomaterials, degradable plastics, hloov asphalt thiab ntoo-yas composite cov ntaub ntawv, nyob rau hauv lub industrialization ntawm cov ntaub ntawv no, thiab tib-kev taw qhia ntxaib-ntsia hlau extrusion technology ua tus tseem ceeb kom paub txog industrialization.Piv nrog rau cov khoom siv polyolefin zoo tib yam, cov ntaub ntawv no muaj qhov sib txawv ntawm cov khoom siv hauv cov khoom, cov qauv molecular thiab rheological zog.
(1) Nanomaterials tau dhau los ua hom tshiab ntawm cov ntaub ntawv tsim los ntawm ntau lub teb chaws hauv ntiaj teb.Los ntawm kev npaj nanometer masterbatch mus rau zus tau tej cov nanometer hloov plastics, ntxaib-ntsia hlau extruder plays lub luag hauj lwm irreplaceable nyob rau hauv lub industrialization ntawm nanometer plastics.Ua ntej, vim qhov particle loj faib ntawm nanomaterials, qhov sib xyaw extrusion thiab dispersion cuam tshuam yuav tsum tau siab.Thib ob, kev npaj nanometer masterbatch rau inviscid yaj yam ntxwv, tsis tshua muaj toughness, muaj ib tug loj npaum li cas ntawm cov roj extrusion thiab additives nyob rau hauv tus txheej txheem ntawm tshem tawm cov khoom decomposition, thiab cov tsoos polymer nyob rau hauv txawv lub xeev ntawm plasticizing yam ntxwv xws li siab brittleness, txias thiab Cov txheej txheem khoom tiav yog txawv ntawm cov txheej txheem polyolefin masterbatch zoo tib yam.Los ntawm kev sib xyaw thiab plasticizing extruder kom txias thiab granulation, yuav tsum muaj ntau yam kev tsim kho tshiab.Yog li ntawd, txoj kev txias txias ntawm molten polymer tsis tuaj yeem txais yuav.Cov khoom kawg yog tsim los ntawm kev sau cov khoom noj uas tau kaw rau hauv lub tog raj kheej, tab tom los txais txoj kev ntawm siv hauv hom hauv lub tog raj kheej, thiab txais txoj kev ntawm kev siv tshuab, thiab txais txoj kev ntawm kev siv tshuab, thiab txais txoj kev ntawm kev siv tshuab, thiab txais txoj kev ntawm txoj siv ntawm lub tog raj kheej, thiab txais txoj kev ntawm txoj siv ntawm lub tog raj kheej, thiab txais txoj kev ntawm siv hauv hom hauv lub tog raj kheej, thiab txais txoj kev ntawm kev siv tshuab, thiab txais txoj kev siv tshuab thiab txias, ua ntej-crushing thiab crushing nyob rau hauv cov khoom sawb txias thiab crushing.
(2) Muaj ntau cov hmoov txhuv nplej siab hauv kev txhim kho cov hmoov txhuv nplej siab uas muaj cov khoom siv degradable, ob chav degradable plastics thiab tag nrho cov hmoov txhuv nplej siab thermoplastic plastics.Ntxiv nrog rau plasticizing thiab sib tov lawv, lub cev qhuav dej thiab lub sijhawm nyob hauv qhov chaw nyob hauv cov txheej txheem extrusion tau dhau los ua teeb meem uas yuav tsum tau daws thaum sib tov thiab granulating.Yog li ntawd, raws li cov ntaub ntawv tshwj xeeb, tus tswv tsev tsim nyog ntsia hlau ntev-ntev qhov sib piv, qhov chaw tso pa thiab qhov ntau, cov qauv ntsia hlau thiab kev teeb tsa, cov khoom siv ntxiv thiab cov ntsiab lus ntxiv yuav tsum raug xaiv los kuaj thiab txiav txim qhov teeb tsa;Nyob rau tib lub sijhawm, kev ua haujlwm thev naus laus zis thiab thev naus laus zis kuj dhau los ua qhov teeb meem tseem ceeb ntawm kev degradation yas ntxaib-ntsia hlau extrusion.Cov thev naus laus zis tseem ceeb saum toj no tuaj yeem ua raws li qhov kev vam meej uas twb muaj lawm, ua ke nrog cov txheej txheem extrusion thiab kev soj ntsuam cov txiaj ntsig, thaum kawg txiav txim siab cov txheej txheem extrusion khoom configuration.
(3) Hloov kho asphalt tau dhau los ua cov kev taw qhia tshiab ntawm kev hloov kho cov khoom siv polymer.Tsom ntsoov rau nws daim ntawv thov nyob rau hauv txoj kev loj kev tsim kho, tshav dav hlau reconstruction thiab expansion tej yaam num, kev txhim kho nws cov kub tsis kam thiab tsis kub brittle cov cuab yeej yog lub ntsiab kev taw qhia ntawm kev txhim kho nws daim ntawv thov nqi.Vim tias qhov hnyav molecular faib thiab cov qauv ntawm macromolecule, kev hloov kho ntawm asphalt tsis tau zoo dua.Hloov kho asphalt yog tshwj xeeb heev, muaj ob qho tib si rau cov yam ntxwv ntawm cov roj hmab yas sib tov, tab sis kuj muaj cov ntsiab lus ntawm cov khoom tom qab ua tiav, thauj cov ntxaib ntsia hlau extruder, sib xyaw cov ntsiab lus ntawm kev loj hlob, xws li extrusion granulation yog muab tso rau hauv cov kev cai tshiab. , xav tau kev tsim kho tshiab los tsim cov qauv tshiab thiab kev teeb tsa ntawm cov ntsia hlau caij, console, xaiv ob lub ntsia hlau ib feem hauv txhua yam kev ntsuas ntsuas, xws li ntsia hlau ntev mus rau txoj kab uas hla piv, tus naj npawb thiab txoj hauj lwm ntawm cov seem seem, shear npaum li cas, extruding daim ntawv thiab cov qauv. , lwm.
(4) Raws li cov ntaub ntawv tshawb fawb, WPC yog cov khoom siv tshiab uas muaj peev xwm zoo.Nws tau tshaj tawm tias cov nroj tsuag fiber ntau tau siv dav hauv kev lag luam tsheb, kev tsim kho kev lag luam, kev lag luam tsheb thauj mus los, kev lag luam aviation thiab lwm yam vim lawv cov khoom siv tshuab siab, tshwj xeeb hardness, lub zog tshwj xeeb, suab nqus thiab biodegradability.Nyob rau hauv ntoo fiber, ntoo hmoov tov nrog resin matrix, sib tov ntawm txawv txoj kev ntawm ntoo fiber nyob rau hauv cov ntaub ntawv uas tau los ntawm dispersing uniformity ntawm qhov sib txawv yog loj heev, kom paub lub industrialization ntawm ntoo yas composite no cov ntaub ntawv tshiab ntau lawm yog tus yuam sij rau lub txheej txheem extrusion thiab cov qauv tshwj xeeb ntawm extruder, thev naus laus zis innovation taw tes nyob rau hauv segmented them txoj kev, tshwj xeeb ntsia hlau hom qauv, TME thiab ZME caij, siab torque iav kis tau tus mob, loj ntsia hlau ntev mus rau txoj kab uas hla piv thiab D / Di = 1.55 dawb ntim , ib-kauj ruam txoj kev ntawm ntxaib-ntsia hlau extrusion ntau lawm.
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Post lub sij hawm: Aug-22-2019