Plasticization yog hais txog cov txheej txheem ntawm dov los yog extruding raw roj hmab los txhim kho nws cov ductility, flowability, thiab lwm yam khoom, txhawm rau pab txhawb kev ua haujlwm tom ntej xws li molding.
1. Cov txheej txheem ua haujlwm:
Nyob rau hauv ib txwm ua tej yam kev mob, tus nqi plasticization ntawm PVC resin nce nrog kev nce ntawm kev kub thiab shear tus nqi. Qhov siab dua qhov ua haujlwm kub, qhov sib txawv ntawm qhov kub ntau dua, thiab qhov ceev ntawm qhov hloov mus rau qhov kub. Vim yog PVC ua tus neeg xyuas pib tsis zoo ntawm cov cua sov, qhov nce hauv shear ceev yuav ua rau kom muaj kev sib txhuam ntawm cov khoom siv hluav taws xob, nrog rau kev sib cuag ntawm cov khoom thiab cov khoom siv, yog li txhim kho kev sib hloov hluav taws xob.
2. Resin qauv:
Lub iav hloov kub thiab melting point ntawm PVC nce nrog nce molecular hnyav thiab crystallinity, thiab cov plasticization degree ntawm PVC kuj yuav nyuaj.
3: Formula factor
Kev siv cov lubricants, plasticizers, kev pab cuam, cuam tshuam kev hloov pauv, muab tub lim, stabilizers, thiab lwm yam hauv cov txheej txheem PVC muaj kev cuam tshuam loj rau cov khoom ntawm PVC plasticization. Tau kawg, cov khoom sib txawv muaj ntau txoj hauv kev thiab qib ntawm kev cuam tshuam rau cov khoom yas ntawm PVC vim lawv cov hom phiaj sib txawv.
4. Kev sib xyaw thiab kev ua haujlwm
Kev sib xyaw yog cov txheej txheem ntawm homogenizing PVC resin nrog cov khoom siv ntxiv xws li cov cua sov stabilizers, hloov kho, lubricants, muab tub lim, thiab pigments. Cov cuab yeej siv tseem ceeb yog lub tshuab kneading high-speed thiab lub tshuab cua txias. Cov txheej txheem sib xyaw yog nyob ntawm kev sib txhuam thiab kev sib txhuam los ntawm cov khoom siv dag zog ntawm cov khoom siv los ua kom zoo dua thiab ua kom sov cov khoom, yaj qee cov khoom ntxiv thiab txheej rau saum npoo ntawm PVC resin. PVC resin yog refined nyob rau hauv shear thiab kev sib txhuam, thiab nws nto zoo li mos thiab ntxeem tau nyob rau hauv kub. Tus neeg sawv cev pabcuam yog adsorbed rau ntawm qhov chaw thiab mus txog homogenization. Qhov kub ntxiv nce ntxiv, thiab qhov saum npoo ntawm cov khoom melts, uas ua rau muaj qhov nce ntawm qhov ntom ntom.
Post lub sij hawm: Oct-30-2023
