Nitrile butadiene roj hmab (NBR) thiab polyvinyl chloride (PVC) yog ob qho khoom siv dav hauv kev lag luam rwb thaiv tsev, tshwj xeeb tshaj yog siv hluav taws xob thiab thermal. Lawv cov khoom tshwj xeeb ua rau lawv haum rau ntau qhov chaw, tab sis kev ua haujlwm ntawm cov ntaub ntawv insulating tuaj yeem sib txawv heev nyob ntawm cov txheej txheem tsim khoom. Kev nkag siab txog qhov cuam tshuam ntawm kev tsim khoom sib txawv ntawm kev ua haujlwm rwb thaiv tsev ntawm NBR / PVC cov ntaub ntawv yog qhov tseem ceeb rau cov tuam txhab thiab cov neeg siv kawg.
Kev rwb thaiv tsev ntawm NBR / PVC cov ntaub ntawv feem ntau yog nyob ntawm lawv cov thermal conductivity, dielectric zog, thiab kam rau ib puag ncig yam xws li av noo thiab kub hloov pauv. Cov khoom no cuam tshuam los ntawm cov khoom tsim, cov khoom siv ntxiv, thiab cov txheej txheem tshwj xeeb siv hauv kev tsim khoom.
Ib qho ntawm cov txheej txheem tsim khoom tseem ceeb cuam tshuam rau kev ua haujlwm rwb thaiv tsev yog txoj kev sib xyaw ua ke. Nyob rau theem no, lub hauv paus polymers (nitrile roj hmab thiab polyvinyl chloride) yog tov nrog ntau yam additives, xws li plasticizers, stabilizers, thiab fillers. Kev xaiv ntawm additives thiab lawv cov concentration ho hloov lub thermal thiab hluav taws xob zog ntawm cov khoom kawg. Piv txwv li, ntxiv qee cov plasticizers tuaj yeem txhim kho kev yooj yim thiab txo cov thermal conductivity, thaum cov khoom siv tshwj xeeb tuaj yeem txhim kho txhua yam muaj zog thiab thermal stability.
Lwm txoj kev tsim khoom tseem ceeb yog extrusion lossis molding txoj kev siv los tsim cov ntaub ntawv insulating. Extrusion cuam tshuam nrog nias sib tov ntawm cov ntaub ntawv los ntawm kev tuag los ua ib tug nruam zoo, thaum molding yuav tsum pouring cov ntaub ntawv mus rau hauv ib tug pre-tsim kab noj hniav. Txhua txoj kev ua rau muaj qhov sib txawv ntawm qhov ntom, qhov sib xws, thiab tag nrho cov qauv ntawm cov khoom siv insulating. Piv txwv li, extruded NBR / PVC rwb thaiv tsev cov ntaub ntawv yuav muaj zoo uniformity thiab qis porosity piv rau cov khoom molded, yog li txhim kho lawv cov rwb thaiv tsev kev ua tau zoo.
Cov txheej txheem kho ua lub luag haujlwm tseem ceeb hauv kev rwb thaiv tsev ntawm nitrile roj hmab / polyvinyl chloride (NBR / PVC) cov ntaub ntawv. Curing, tseem hu ua vulcanization, yog hais txog cov txheej txheem ntawm kev sib txuas ntawm cov hlua khi polymer los ntawm kev siv cov cua sov thiab siab, ua rau cov khoom ruaj khov thiab ruaj khov. Lub sijhawm thiab qhov kub thiab txias ntawm cov txheej txheem curing cuam tshuam rau qhov kawg ntawm cov khoom siv rwb thaiv tsev. Kev kho tsis txaus ua rau kev sib txuas tsis tiav, yog li txo cov thermal tsis kam thiab lub zog dielectric. Conversely, over-curing ua rau cov khoom ua nkig thiab tawg, yog li txo nws cov rwb thaiv tsev zoo.
Tsis tas li ntawd, qhov txias txias tom qab tsim khoom cuam tshuam rau crystallinity thiab morphology ntawm NBR / PVC cov ntaub ntawv. Kev txias nrawm tuaj yeem ua rau muaj kev nce hauv cov qauv amorphous, uas tuaj yeem txhim kho kev yooj yim tab sis tuaj yeem txo cov thermal stability. Ntawm qhov tod tes, qhov qis qis qis tuaj yeem txhawb nqa crystallization, uas tuaj yeem txhim kho cov cua sov, tab sis ntawm qhov kev siv ntawm qhov yooj yim.
Nyob rau hauv ib lo lus, cov khoom rwb thaiv tsev ntawm NBR / PVC cov ntaub ntawv cuam tshuam los ntawm ntau yam kev tsim khoom. Los ntawm kev sib xyaw thiab molding rau kev kho thiab txias, txhua kauj ruam hauv cov txheej txheem tsim khoom hloov pauv cov thermal thiab hluav taws xob ntawm cov khoom kawg. Cov neeg tsim khoom yuav tsum ua tib zoo xav txog cov xwm txheej no txhawm rau txhim kho kev ua tau zoo ntawm cov ntaub ntawv NBR / PVC rau cov ntawv thov tshwj xeeb. Nrog rau kev loj hlob ntxiv hauv kev thov rau cov khoom siv rwb thaiv tsev zoo, kev tshawb fawb txuas ntxiv thiab kev tsim cov thev naus laus zis yog qhov tseem ceeb rau kev txhim kho kev ua haujlwm ntawm NBR / PVC rwb thaiv tsev daws teeb meem hauv ntau qhov chaw.
Lub sij hawm xa tuaj: Nov-11-2025
