Vim Li CasPolyurethane ElastomerPoob Nws Hnav Resistance?
Polyurethane rollers tau siv dav hauv lithium roj teeb, photovoltaic, luam ntawv, slitting, papermaking, textile, thiab lwm yam kev lag luam cov kab ntau lawm vim lawv zoo heev hnav tsis kam, siab elasticity, thiab tshuaj tiv thaiv. Txawm li cas los xij, qee cov tuam txhab lag luam ntsib teeb meem xws li hauv zos tev lossis ua kom tiav ntawm cov txheej txheem polyurethane, ua rau cov khoom lag luam poob qis thiab nce nqi kho.
Raws li cov qauv kev lag luam hauv kev lag luam roj hmab thiab yas, nrog rau ntau qhov chaw, cov laj thawj tseem ceeb ntawm polyurethane cov menyuam txheej tsis ua haujlwm tuaj yeem muab faib ua plaub pawg: txheej txheem tsim khoom, kev xaiv raw khoom, kev ua haujlwm, thiab kev tu txhua hnub.
1. Kev npaj cov menyuam tub ntxhais tsis zoo
Kev npaj deg tsis zoo yog ib qho ntawm feem ntau ua rau cov txheej txheem tsis ua haujlwm.
Yog tias cov tub ntxhais hlau muaj cov roj, xeb, lossis oxide txheej, kev sib txuas ntawm cov polyurethane elastomer thiab cov hlau substrate yuav tsis muaj zog heev. Sandblasting tsis txaus lossis qhov tsis zoo ntawm qhov roughness (qhov pom zoo yog feem ntau 25-50 μm) txo cov neeg kho tshuab anchoring thiab lub zog sib txuas. Yog tias cov primer tsis siv tam sim ntawd tom qab sandblasting, cov hlau nto tuaj yeem oxidize dua, ntxiv txo adhesion.
Cov ntaub ntawv sib txawv ntawm cov tub ntxhais tseem xav tau kev kho deg sib txawv. Piv txwv li, aluminium alloy rollers feem ntau xav tau ib tus neeg sawv cev sib txuas ntxiv rau cov xuab zeb blasting kom ua tiav kev sib raug zoo.
2. Kev tswj tsis zoo thaum lub sij hawm Casting thiab Curing
Kev tsim khoom tsis raug cai thaum lub sij hawm casting thiab kho kuj tuaj yeem ua rau txheej tsis ua haujlwm.
Cov av noo siab, qhov kub thiab txias ntau qhov sib txawv ntawm cov tub ntxhais cov tub ntxhais thiab cov khoom siv polyurethane, lossis lub sijhawm kho tsis zoo yuav ua rau muaj cua npuas, qhov seem sab hauv kev ntxhov siab, lossis kev sib txuas tsis tiav - txuas. Yog li ntawd, lub zog nplaum ntawm polyurethane txheej thiab cov tub ntxhais cov tub ntxhais raug txo qis heev.
Tsis tas li ntawd, siv cov khoom siv dav dav -cov nplaum nplaum es tsis yog polyurethane- tshwj xeeb kev sib txuas tshuab feem ntau ua rau tsis muaj cua sov thiab kev laus ua haujlwm. Nyob rau hauv ntev - lub sij hawm mechanical load thiab elevated kub, lub bonding txheej yuav ua tsis tau ntxov ntxov, ua rau delamination thiab tev.
Cov pwm tsim tsis zoo, lub vojvoog ntawm ntug tsis txaus, lossis cov txheej txheej ntau dhau kuj tseem tuaj yeem ua rau muaj kev ntxhov siab ntawm cov npoo ntawm cov menyuam, qhov chaw tev feem ntau pib.
3. Tsis tsim nyog Polyurethane Formulation
Xaiv qhov tsis ncaj ncees lawm polyurethane formulation rau daim ntawv thov tuaj yeem txo qhov kev pab cuam lub neej.
Standard polyurethane formulations tej zaum yuav tsis haum rau ib puag ncig uas muaj xws li:
Kub kub
Cov tshuaj corrosive
Heavy mechanical loads
Kev ua haujlwm siab - nrawm nrawm
Tsis tas li ntawd, cov khoom siv tas sij hawm lossis cov khoom tsis huv tuaj yeem txo cov molecular stability, uas ua rau tawg, txo hnav tsis kam, thiab txheej tsis ua haujlwm dhau sijhawm.
4. Kev ua haujlwm tsis zoo thiab kev tu vaj tse
Kev khiav hauj lwm tej yam kev mob kuj muaj kev cuam tshuam loj rau cov menyuam durability.
Ntev - lub sij hawm overload, loading tsis sib npaug, los yog ntau shear rog yuav maj mam ua puas lub bonding interface ntawm polyurethane thiab cov hlau core.
Cov av noo siab, siab kub, electrolytes, inks, kuab tshuaj, los yog lwm yam tshuaj corrosive yuav ua rau kom polyurethane aging, ua rau rov nthuav thiab contraction uas nws thiaj li ua rau debonding.
Kev ua tsis tiav ntawm kev ntxuav cov menyuam tsis tu ncua tso cai rau cov kab mob thiab cov khoom corrosive mus rau hauv qhov chaw, ua rau cov kab nrib pleb me me nthuav mus rau hauv loj - nplai txheej tsis ua haujlwm.
Yuav Ua Li Cas Txhim Kho Polyurethane Cov Menyuam Kev Pabcuam Lub Neej?
Txhawm rau kom ua tiav qhov ntev ntawm polyurethane rollers, manufacturers yuav tsum:
Ua kom zoo huv si thiab sandblast cov menyuam ntxhais ua ntej sib txuas.
Siv cov primers tsim nyog tam sim ntawd tom qab kev npaj nto.
Tswj nruj nreem casting, curing kub, humidity, thiab curing lub sij hawm.
Xaiv polyurethane formulations uas phim qhov chaw ua haujlwm tiag tiag.
Siv high-polyurethane zoo- cov tshuab sib txuas tshwj xeeb.
Tsis txhob ntev - lub sij hawm overload thiab loading tsis sib xws.
Ua tsis tu ncua kev tshuaj xyuas thiab tu kom tsis txhob muaj kev puas tsuaj ntxov ntxov.
Shandong Beiqiao Tshiab Khoom Technology Co., Ltd. manufactures siab - zoo polyurethane prepolymers rau polyurethane rollers thiab lwm yam cam khwb cia polyurethane elastomer daim ntaub ntawv. Peb kuj tuaj yeem muab cov qauv tsim raws li qhov sib txawv hardness, hnav tsis kam, thiab ua haujlwm.
Yog tias koj tab tom nrhiav kev txhim khu kev qha polyurethane raw khoom rau cov menyuam tsim, thov koj xav tiv tauj peb.