Roj hmab muaj elasticity zoo, tab sis cov cuab yeej muaj nuj nqis no ua rau muaj teeb meem loj hauv kev tsim khoom. Yog hais tias lub elasticity ntawm raw roj hmab tsis yog thawj zaug txo, feem ntau ntawm cov neeg kho tshuab lub zog yog noj nyob rau hauv lub elastic deformation thaum lub sij hawm ua cov txheej txheem, thiab qhov yuav tsum tau cov duab yuav tsis tau. Rubber processing technology muaj qee yam yuav tsum tau ua rau cov yas ntawm cov roj hmab nyoos, xws li kev sib xyaw, uas feem ntau yuav tsum muaj Mooney viscosity ntawm ib ncig ntawm 60, thiab cov roj hmab so, uas yuav tsum tau muaj Mooney viscosity ntawm ib ncig ntawm 40, txwv tsis pub, nws yuav tsis tuaj yeem ua haujlwm zoo. . Qee cov nplaum nplaum yog tawv heev, muaj viscosity siab, thiab tsis muaj cov txheej txheem tsim nyog thiab tsim nyog - zoo plasticity. Txhawm rau ua kom tau raws li cov txheej txheem, cov roj hmab nyoos yuav tsum tau muab cov yas los txiav tawm cov saw hlau molecular thiab txo qhov hnyav molecular nyob rau hauv txhua yam, thermal, tshuaj thiab lwm yam kev ua. Plastic compound uas ib ntus poob nws elasticity thiab ua mos thiab malleable. Nws tuaj yeem hais tias cov roj hmab nyoos molding yog lub hauv paus ntawm lwm cov txheej txheem thev naus laus zis.
Lub hom phiaj ntawm raw roj hmab molding yog: ua ntej, kom tau ib tug tej yam kev kawm ntawm plasticity rau raw roj hmab, ua nws haum rau tov, dov, extrusion, sib sau, vulcanization, raws li zoo raws li yuav tsum tau ntawm cov txheej txheem xws li roj hmab slurry thiab daim txhuam cev roj hmab. kev tsim khoom; Qhov thib ob yog kom homogenize lub plasticity ntawm cov roj hmab nyoos thiaj li yuav tsim cov khoom siv roj hmab nrog cov khoom zoo.
Tom qab plasticizing, lub cev thiab tshuaj lom neeg ntawm cov roj hmab nyoos kuj raug hloov pauv. Vim muaj zog mechanical quab yuam thiab oxidation, cov qauv molecular thiab molecular hnyav ntawm roj hmab yuav hloov mus rau ib qho twg, yog li lub cev thiab tshuaj lom neeg yuav hloov. Qhov no yog manifested nyob rau hauv ib tug txo nyob rau hauv elasticity, nce nyob rau hauv plasticity, nce nyob rau hauv solubility, ib tug txo nyob rau hauv viscosity ntawm cov roj hmab tov, thiab kev txhim kho nyob rau hauv cov nplaum ua hauj lwm ntawm cov khoom siv roj hmab. Tab sis raws li cov plasticity ntawm cov roj hmab nyoos nce, cov neeg kho tshuab lub zog ntawm cov roj hmab vulcanized txo, qhov deformation mus tas li nce, thiab hnav tsis kam thiab kev laus tiv thaiv ob qho tib si txo. Yog li ntawd, cov plasticization ntawm cov roj hmab nyoos tsuas yog muaj txiaj ntsig zoo rau cov txheej txheem roj hmab, thiab tsis tsim nyog rau kev ua haujlwm ntawm cov roj hmab vulcanized.
Post lub sij hawm: Lub Xya hli ntuj-26-2023
