Cov txheej txheem roj hmab ntau lawm
Roj hmab yog cov khoom siv elastic uas feem ntau muab los ntawm cov latex ntawm cov ntoo roj hmab lossis cov khoom siv hluavtaws. Nws nthuav tawm cov elasticity zoo heev, ua kom tsis haum, thiab kev laus ua haujlwm, ua rau nws siv dav hauv ntau yam kev siv xws li kev tsim cov log tsheb, cov ntsaws ruaj ruaj, cov kav dej, cov roj hmab, thiab lwm yam. Cov txheej txheem ntawm cov khoom siv roj hmab feem ntau suav nrog ntau cov txheej txheem tseem ceeb xws li mastication, compounding, calendering, extrusion, molding, thiab vulcanization. Txhua kauj ruam ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov ua tau zoo thiab qhov zoo ntawm cov khoom kawg. Hauv qab no yog cov ncauj lus kom ntxaws txog kev tsim cov khoom siv roj hmab.
1. Mastication:
Cov roj hmab nyoos thiab cov khoom siv ntxiv yog sib xyaw thiab ua kom sov hauv cov roj hmab crusher kom soften cov roj hmab, txhim khu cov adhesion, thiab tshem tawm cov impurities muaj nyob rau hauv nws.
Yam Tseem Ceeb: Tswj lub sij hawm, qhov kub thiab txias, mechanical force, thiab hom / feem ntawm masticating agents.
2. Kev sib xyaw ua ke:
Nyob rau hauv lub tov khoom, cov roj hmab thiab ntau yam additives (xws li vulcanization agents, anti-aging agents, fillers, thiab lwm yam) yog sib tov tusyees los txhim kho kev ua tau zoo ntawm cov khoom siv roj hmab.
Cov yam tseem ceeb: Hom, kev faib ua feem, thiab qhov sib lawv liag ntawm cov khoom ntxiv, kev sib xyaw kub thiab lub sijhawm, sib xyaw siv, thiab lwm yam.
3. Calendering:
Cov roj hmab sib xyaw yog nias rau hauv cov ntawv nyias lossis nyias strips los ntawm lub tshuab calender rau kev ua haujlwm tom ntej thiab molding.
Cov yam tseem ceeb: Kev tswj cov ntsuas kub, ceev, siab, roj hmab hardness, thiab viscosity.
4. Extrusion:
Cov roj hmab yog extruded los ntawm lub tshuab extrusion mus rau hauv cov ntaub ntawv txuas mus ntxiv nrog ib qho kev sib txuas tshwj xeeb, uas yog siv los tsim cov khoom siv roj hmab hauv cov raj, rods lossis lwm cov duab nyuaj.
Yam Tseem Ceeb: Kev tswj ntawm extrusion tshuab kub, siab, ceev, tuag taub hau tsim, thiab lwm yam.
5. Moulding:
Cov khoom siv roj hmab yog muab tso rau hauv pwm, thiab nyob rau hauv qhov kev txiav txim ntawm cua sov thiab siab, nws sau cov pwm kab noj hniav thiab tau txais cov duab xav tau.
Yam Tseem Ceeb: Pwm tsim, kub, siab, tswj lub sijhawm, roj hmab sau tus nqi, thiab cov khoom ntws.
6. Vulcanization:
Cov khoom siv roj hmab tsim tau muab tso rau hauv qhov cub vulcanization, thiab cov vulcanization cov tshuaj tiv thaiv yog nqa tawm nyob rau hauv ib tug tej yam kub thiab txias, lub sij hawm thiab siab, thiaj li hais tias cov roj hmab molecules yog cross-linked, li no kev txhim kho cov neeg kho tshuab lub zog, hnav tsis kam thiab aging kuj ntawm lub roj hmab.
Cov yam tseem ceeb: Kev tswj ntawm vulcanization kub, lub sij hawm, siab, hom / tus nqi ntawm vulcanizing tus neeg sawv cev, thiab cross-link ceev thiab qauv
Cov lus piav qhia ntxaws saum toj no qhia txog cov txheej txheem tseem ceeb hauv kev tsim cov khoom siv roj hmab, nrog rau txhua kauj ruam ntawm kev ua haujlwm kom raug thiab kev tswj hwm yog qhov tseem ceeb hauv kev txiav txim siab qhov zoo thiab kev ua haujlwm ntawm cov khoom siv roj hmab zaum kawg.
