Plasticization yog hais txog cov txheej txheem ntawm dov lossis extruding roj hmab nyoos kom txhim kho nws cov ductility, flowability, thiab lwm yam khoom, txhawm rau pab txhawb kev ua tiav tom ntej xws li molding.
1. Cov xwm txheej ua tiav:
Nyob rau hauv cov xwm txheej ua haujlwm ib txwm muaj, tus nqi plasticization ntawm PVC resin nce nrog rau qhov nce ntawm qhov kub thiab txias ua haujlwm thiab shear rate. Qhov kub ua haujlwm siab dua, qhov sib txawv ntawm qhov kub thiab txias ntau dua, thiab qhov ceev ntawm kev hloov pauv cua sov. Vim tias PVC yog tus neeg coj cua sov tsis zoo, qhov nce ntawm shear speed yuav ua rau muaj kev sib txhuam ntawm cov khoom siv, nrog rau qhov zaus ntawm kev sib cuag ntawm cov khoom siv thiab cov khoom siv, yog li txhim kho kev sib pauv cua sov zoo.
2. Cov qauv cob:
Qhov kub hloov iav thiab qhov chaw yaj ntawm PVC nce nrog rau qhov nce ntawm qhov hnyav molecular thiab crystallinity, thiab qib plasticization ntawm PVC kuj nyuaj.
3: Cov yam ntxwv ntawm cov qauv
Kev siv cov roj nplua nyeem, cov khoom siv yas, cov khoom pab ua tiav, cov khoom hloov pauv, cov khoom sau, cov khoom ruaj khov, thiab lwm yam hauv cov txheej txheem ua tiav PVC muaj qhov cuam tshuam loj heev 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 siv yas ntawm PVC vim lawv cov hom phiaj siv sib txawv.
4. Kev sib tov thiab kev ua cov txheej txheem
Kev sib tov yog cov txheej txheem ntawm kev sib xyaw PVC resin nrog cov khoom ntxiv xws li cov khoom siv cua sov, cov khoom hloov kho, cov roj nplua nyeem, cov khoom sau, thiab cov xim. Cov khoom siv tseem ceeb siv yog lub tshuab kneading ceev ceev thiab lub tshuab sib tov txias. Cov txheej txheem sib tov vam khom kev sib txhuam thiab kev sib txhuam los ntawm cov zog kho tshuab ntawm cov khoom siv los ua kom zoo thiab ua kom sov cov khoom siv, yaj qee cov khoom ntxiv thiab txheej lawv rau ntawm qhov chaw ntawm PVC resin. PVC resin raug ua kom zoo hauv qab kev sib txhuam thiab kev sib txhuam, thiab nws qhov chaw zoo li mos thiab porous hauv qab qhov kub. Tus neeg sawv cev pabcuam yog adsorbed rau ntawm qhov chaw thiab ncav cuag homogenization. Qhov kub ntxiv nce ntxiv, thiab qhov chaw ntawm cov khoom me me yaj, ua rau muaj kev nce ntxiv ntawm cov khoom me me.
Lub sijhawm tshaj tawm: Lub Kaum Hli-30-2023
