Polyvinyl chloride yog ib qho ntawm tsib lub hom phiaj tseem ceeb ntawm cov yas hauv ntiaj teb.Vim nws cov nqi qis dua piv rau polyethylene thiab qee cov hlau, thiab nws cov kev ua haujlwm zoo heev thiab lub cev thiab tshuaj lom neeg ntawm cov khoom, nws tuaj yeem ua tau raws li cov kev xav tau ntawm kev npaj nyuaj rau mos, elastic, fiber, txheej thiab lwm yam khoom, thiab yog siv dav. nyob rau hauv ntau yam xws li kev lag luam, kev ua liaj ua teb, thiab kev tsim kho.Yuav ua li cas rov ua dua thiab siv pov tseg polyvinyl chloride yog qhov tseem ceeb heev.
1.Regeneration
Ua ntej, kev tsim kho ncaj qha tuaj yeem ua tau.Kev rov tsim dua tshiab ntawm cov yas khib nyiab yog hais txog kev ua haujlwm ncaj qha thiab molding ntawm cov khoom pov tseg los ntawm kev ntxuav, crushing, thiab plasticization yam tsis tas yuav tsum tau hloov ntau yam, lossis kev ua thiab molding ntawm cov khoom los ntawm granulation.Tsis tas li ntawd, nws tseem tuaj yeem hloov kho thiab rov tsim dua tshiab.Kev hloov kho thiab rov tsim dua tshiab ntawm cov yas qub yog hais txog kev hloov kho lub cev thiab tshuaj lom neeg ntawm cov khoom siv rov ua dua tshiab ua ntej ua thiab tsim.Kev hloov kho tuaj yeem muab faib ua kev hloov kho lub cev thiab kev hloov kho tshuaj.Filling, fiber ntau sib xyaw, thiab sib tov sib xyaw yog qhov tseem ceeb ntawm kev hloov kho lub cev ntawm PVC.Filling modification yog hais txog kev hloov kho txoj kev sib xyaw ua ke ntawm cov khoom sib xyaw ua ke nrog ntau dua modulus hauv polymers.Fiber composite reinforcement modification yog hais txog cov kev hloov kho ntawm kev ntxiv cov modulus siab thiab siab zog ntuj los yog dag fibers rau hauv ib tug polymer, yog li zoo heev txhim kho cov neeg kho tshuab zog ntawm cov khoom.Kev hloov tshuaj lom neeg ntawm PVC yog ua tiav los ntawm kev hloov cov qauv ntawm PVC los ntawm qee cov tshuaj tiv thaiv.
2.Kev tshem tawm thiab siv cov tshuaj hydrogen chloride
PVC muaj li ntawm 59% chlorine.Tsis zoo li lwm cov carbon saw polymers, cov ceg saw hlau ntawm PVC tawg ua ntej cov saw tseem ceeb thaum lub sij hawm tawg, ua kom muaj cov roj hydrogen chloride ntau, uas yuav ua rau cov khoom siv corrode, tshuaj lom Catalyst lom, thiab cuam tshuam rau cov khoom tawg yooj yim.Yog li ntawd, kev kho hydrogen chloride tshem tawm yuav tsum tau ua thaum lub sij hawm PVC tawg.
3.Burning PVC los siv cov cua sov thiab cov roj chlorine
Rau cov khoom pov tseg uas muaj PVC, cov yam ntxwv ntawm cov khoom siv hluav taws xob siab feem ntau yog siv los sib xyaw nrog ntau yam khoom siv hluav taws xob thiab tsim cov khoom siv roj nrog cov khoom loj.Qhov no tsis tsuas yog ua kom yooj yim khaws cia thiab kev thauj mus los, tab sis kuj hloov cov roj siv hauv cov thee hlawv boilers thiab cov kilns, thiab dilutes chlorine los txhim kho thermal efficiency.
Post lub sij hawm: Lub Xya hli ntuj-21-2023
