PE (Polyethylene) daim ntawv yog cov khoom siv yas ntim yas. Vim nws cov khoom siv lub cev zoo, tshuaj lom neeg ruaj khov thiab ua lub luag haujlwm tseem ceeb hauv kev tsim, ua liaj ua teb, kev siv hluav taws xob thiab lwm thaj chaw. Ntawm lawv, extrusion molding yog ib txoj hauv kev tseem ceeb tshaj plaws rau kev ua cov ntawv zoo thiab ua haujlwm siab. Txawm li cas los xij, PE cov ntawv txheeb xyuas ntau zaus ntsib cov teeb meem muaj teeb meem thaum lub sijhawm tsim khoom, tab sis kuj yuav ua rau txo cov khoom lag luam zoo, xws li cov khoom tsis zoo thiab muaj qhov tsis txaus ntseeg. Vim tias cov kev taw qhia ntws ntawm cov polymer yaj yog rov qab rau lub sijhawm tsis meej, ua rau cov khoom lag luam tsis zoo xws li wrinkles thiab nrib pleb. Yog li ntawd, kawm thiab ua kom zoo ntws cov cim ntawm PE cov ntawv yog qhov tseem ceeb los txhim kho kev ua haujlwm tau zoo thiab qhov zoo ntawm cov khoom kawg.
Lub ntsiab yog vim li cas rau cov ntawv tsis zoo ntawm PE Sheet cov ntaub ntawv?
Cov yam ntxwv ntws ntawm PE cov ntawv txheeb tau tsuas yog txiav txim siab los ntawm lawv cov khoom siv tau. Ntau hom polyethylene nplooj ntawv xav tau kev siv ntau yam ntxiv ntawm kev ua tiav thaum ua kom tiav qhov kev ua tau zoo. Cov ntsiab lus tseem ceeb uas txiav txim siab fluidity yog faib cov molecular hnyav thiab tus qauv ntawm lub lwg me me. High molecular hnyav pe hawm cov ntawv txheeb xyuas feem ntau pom ntau dua melt viscosity, uas ua rau cov tsis tau zoo ntawm fluidity. Hauv kev ua tiav, yog tias tsim nyog cov txheej txheem coj los siv, nws cov kua txiv tau txhim kho, yog li txhim kho cov khoom zoo thiab tso zis. Tsis tas li ntawd, cov hom thiab cov ntsiab lus ntawm cov quav ntxiv muaj cov nyhuv tseem ceeb rau nws lub fluidity. Yog li ntawd, nws yog ib qho tseem ceeb heev los xaiv cov tshuaj ntxiv uas tsim nyog thiab rationalally tsim cov mis los txhim kho kom muaj fluidity ntawm cov khoom. Piv txwv li, cov puv tsev ntau dhau los yog qee hom tshuaj tua kab mob antioxidants tuaj yeem ua rau viscosity ntawm melt kom nce, yog li cuam tshuam nws cov xim. Tsis tas li ntawd, kev ua tsis xws li kev ncab tus nqi thiab shear tus nqi kuj tseem ceeb hauv nws cov ntsiab lus tseem ceeb rau kev coj tus cwj pwm ntawm cov polymers. Nyob rau tib lub sijhawm, peb tsis tuaj yeem tsis quav ntsej txog qhov chaw cia khoom thiab sijhawm. Kev khaws cia ntev ntev yuav ua rau cov laus ntawm cov khoom, yog li cuam tshuam nws cov xim.
Kev ua kom sov li cas thiaj li cuam tshuam rau cov dej ntawm PE daim ntawv teev cov ntaub ntawv?
Lub flucity ntawm pe cov ntawv txheeb yog cuam tshuam ntau ntawm qhov tseem ceeb ntawm kev ua qhov kub. Raws li qhov ntsuas kub maj mam nce, PE daim ntawv pib melt maj, lub viscosity ntawm nws melt txo, thiab cov fluinity yog txhim kho. Thaum qhov ntsuas kub tshaj qhov txwv tsis pub tshaj tawm qee qhov kev txwv, qhov txaus viscosity drops loj, thiab txaus ntawm cov khoom lag luam tau txo qis. Txawm li cas los xij, kev kub dhau heev yuav ua rau muaj kev cuam tshuam ntawm cov khoom thiab tsim cov pob zeb me me, uas nyob rau hauv cov viscosity ntawm cov yaj ntawm cov yaj thiab txo nws lub fluidity. Nyob rau hauv cov txheej txheem ntau lawm, nyob rau hauv thiaj li yuav tau txais cov cuab yeej zoo dua thiab muaj zog kub ua haujlwm, nws yog feem ntau tsim nyog los xaiv qhov ntsuas kub tsim nyog. Yog li ntawd, nws yog qhov tshwj xeeb tshaj yog kom paub meej qhov kev ua ntsuas kub tshaj plaws. Daim ntawv no yuav siv cov khoom siv tshawb fawb, ntsuas cov khoom siv hluav taws xob sib txawv thiab siv cov software sib txawv los tsim cov qauv kev tsom xam. Tom qab kev sim tshawb fawb thiab kev tshawb xyuas kev sim, peb tuaj yeem txiav txim siab qhov chaw ntsuas kub zoo uas tuaj yeem ua kom muaj kev tiv thaiv tau zoo thiab tiv thaiv kev ua kom muaj kev cuam tshuam.
Yuav ua li cas txhawm rau txhim kho lub fluidity ntawm PE cov ntawv txheeb los ntawm kev kho cov mis?
Txhawm rau txhim kho cov fellity ntawm pe cov ntawv teev, kho nws cov mis yog qhov zoo. Qhov tseem ceeb tshaj plaws cuam tshuam rau rheological yam khoom ntawm cov polymers suav nrog molecular hnyav xa thiab molecular saw qauv, crystal morphology thiab nws cov kev npaj. Los ntawm kev ntxiv ntau yam ntxiv xws li cov yas tshuab, cov roj nplua nyeem thiab nucleating tus sawv cev, lub viscosity ntawm cov yaj tuaj yeem raug txo thiab nws cov fluicity tuaj yeem txhim kho. Ib qho ntxiv, cov ntxiv kuj tseem tuaj yeem nce cov kev sib txuas hla ntawm cov txiaj ntsig sib txuas ntawm cov khoom siv hluav taws xob, yog li txhim kho cov khoom ntiag tug ntawm cov khoom siv. Txawm li cas los xij, txhawm rau zam kev phiv tsis zoo ntawm lwm cov khoom ntawm cov khoom siv, cov hom thiab cov ntsiab lus ntawm cov ntxiv yuav tsum tau tswj hwm. Piv txwv li, cov yas ntim tau ntau dhau yuav txo tau lub zog ntawm cov khoom, thaum ntau nplua nplua roj nplua nyeem tuaj yeem cuam tshuam rau saum npoo ntawm cov khoom. Ib qho ntxiv, thaum cov tshuaj ntxiv yog qhov ntau dhau, nws tseem yuav ua rau kev ua cov teeb meem lossis khoom tsis ua haujlwm. Yog li ntawd, thaum tsim kho cov qauv mis, nws yog ib qho tsim nyog los nrhiav kev sib npaug ntawm cov fellity thiab lwm yam khoom.
Yuav ua li cas cov pwm tsim thiab cov txheej txheem kev txwv puas cuam tshuam rau lub fluidity ntawm PE Cov Ntawv?
Lub fluabity ntawm pe cov ntawv txheeb tau cuam tshuam ntau heev los ntawm pwm tsim thiab cov txheej txheem tsis zoo. Los ntawm kev txheeb xyuas thiab kawm cov yam ntxwv ntawm ntau hom ntaub ntawv thiab qhov kev hloov pauv ntawm cov qauv tshuaj thiab qhov loj me thaum tsim muaj ntau yam khoom siv sib txawv. Los ntawm kev ua tib zoo tsim cov qauv ntawm cov pwm, xws li cov txheej txheem ntawm lub rooj vag, nws tuaj yeem ua kom tau cov khoom noj uas muaj peev xwm los ntawm cov neeg tsis muaj peev xwm los ntawm cov neeg tsis muaj peev xwm los ntawm cov neeg tsis muaj zog los ntawm kev ua kom txias lossis tsis muaj zog. Tsis tas li ntawd, cov txheej txheem tsis xws li kev txhaj tshuaj ceev, siab thiab ntev muaj cov kev tswj hwm ntawm fightricity. Daim ntawv no siv txoj kev sim tshuaj Orthogonal los kawm txog cov qauv tshuaj ntxiv saum toj no los tsim kev sib raug zoo sib luag ntawm txhua qhov thiab cov yas. Los ntawm kev ua kom zoo dua thiab kho cov kab no, tej zaum peb yuav tuaj yeem txhawb ntxiv cov yam ntxwv ntws ntawm PE Ntawv.
Cov hau kev twg thiab cov txuj ci tshwj xeeb tuaj yeem siv tau hauv kev xyaum kom txhim kho kom muaj fellats?
Hauv kev ua haujlwm tiag tiag, muaj ntau txoj kev sib txawv thiab cov tswv yim los txhim kho cov dej muaj kua ntawm PE cov ntawv txheeb. Tam sim no, cov ntxiv ntxiv rau cov polymers kom nce lawv viscosity thiab rheological cov khoom. Advanced tsim tshuab, xws li cov roj-pab txhaj tshuaj molding thiab co-txhaj molding thiab co kom txhim kho fluidity ntawm melt los ntawm kev hloov nws txoj kev ntws thiab cov duab. Los ntawm kev siv cov kev ntsuas ntawm kev ua kom tau zoo ua kom cov dej ntws, xws li kev tswj hwm thiab kub thiab txias Ib qho ntxiv, cov pwm xav tau txias lossis rhaub thaum lub sijhawm rho tawm thiab txias thiab txias, yog li ua kom cov khoom lag luam zoo. Ib qho ntxiv, kev tswj hwm zoo kuj tseem ceeb heev. Hauv cov txheej txheem ntau lawm, cov khoom siv raw feem ntau yog tshuaj xyuas thiab kuaj. Los ntawm kev kuaj xyuas qhov zoo ntawm cov ntaub ntawv raw, peb tuaj yeem xyuas kom meej tias PE cov ntawv siv tau siv ua raws li cov qauv zoo. Nyob rau tib lub sijhawm, kev soj ntsuam cov txheej txheem tuaj yeem txheeb xyuas thiab daws cov teeb meem uas tshwm sim thaum ua tiav. Los ntawm kev kawm cov ntawv Polyethylene tsim los ntawm qee cov tuam txhab, txheej txheej txheej txheem tsim nyog tau teev cia kom ua tiav cov khoom lag luam zoo thiab txo cov nqi ntau lawm. Sib koom cov kev vam meej thiab cov kev paub ua tau muab cov kev qhia tseem ceeb rau kev txhim kho cov xim ntawm PE cov ntawv txheeb.
Hauv cov ntsiab lus, muaj ntau cov tswv yim thiab cov tswv yim tsim kho kom zoo, txhim kho cov ntaub ntawv tsim kho thiab cov txheej txheem ua kom zoo nkauj thiab ua kom tiav cov thev naus laus zis thev naus laus zis. Kev siv cov kev ntsuas no tsis tuaj yeem txhim kho kom muaj fellity ntawm PE Cov Ntawv, tab sis tseem txhim kho cov khoom lag luam zoo thiab ntau lawm. Nyob rau yav tom ntej, nrog kev txhim kho thiab kev thov ntawm cov kev ntxiv tshiab thiab kev nce qib txuas ntxiv ntawm kev teeb meem ntawm PE Cov Ntawv yuav muaj kev daws teeb meem ntau dua. Nyob rau tib lub sijhawm, kev tshawb nrhiav tas mus txuas ntxiv thiab kev hloov tshiab tseem yuav tseem muaj kev txhawb nqa zoo rau kev thov PE cov ntawv hauv ntau daim teb.
