Dab tsi yog qhov tseem ceeb thiab tshem tawm txoj hauv kev ntawm PVC hose extrusion flexure kev ua tau zoo thiab tsis kub tsis kam uas tsis ua raws li cov ntsuas? Cov hoses feem ntau yog siv rau qhov kub thiab txias thiab yuav tsum tau hloov mus rau lub sijhawm ntev. Rau cov hoses zoo tib yam, DOP tuaj yeem xaiv los ua cov yas yas tseem ceeb, ntxiv los ntawm DOA, uas muaj cov txiaj ntsig zoo thiab kev ua haujlwm zoo tshaj plaws nyob rau hauv qhov kub thiab txias. Vim tias DOP muaj kev sib raug zoo nrog PVC, lub plasticization ceev ceev, thiab PVC muaj peev xwm tswj tau zoo viscosity stability, ua ke nrog nws tsis tshua muaj volatility, dej twj tsis kam, thiab zoo kub softness; Qhov chaw khov ntawm DOA yog -60 degree thiab qhov kub ntawm plasticizing yog 121?125 degree, uas tuaj yeem siv los txhim kho kev ua haujlwm ntawm lub hose nyob rau hauv qhov kub thiab txias kom ua tiav cov txiaj ntsig zoo dua.
Hose forming yog yooj yim dua li cov yeeb nkab nyuaj, thiab tsis tas yuav tsum tau txias qhov chaw thiab cov cuab yeej txiav, yog li cov txheej txheem sib xyaw yog qhov tseem ceeb hauv cov txheej txheem molding, uas yuav tsis tsuas cuam tshuam cov nyhuv plasticization, tab sis kuj cuam tshuam rau qhov kub thiab txias toughness. Cov txheej txheem sib xyaw yog: ua ntej muab PVC, stabilizer, roj nplua nyeem, yas thiab muab tub lim rau hauv lub tshuab ua kom siab ceev, qhov sib xyaw kub yog 60?70 degree, tom qab nplawm rau 5-7min, nws muab tso rau hauv qhov qis qis. tov khoom rau li 2min, thiab tom qab ntawd ntxiv CPE NBR), thiab cov khoom tuaj yeem raug tso tawm tom qab txuas ntxiv rau 3min.
CPE (los yog NBR) hloov kho tsis tuaj yeem ntxiv nrog lwm cov khoom ntxiv xws li cov yas yas, yog tias CPE (lossis NBR) ntxiv ntxov dhau, nws yuav yog vim tias cov roj nqus ntawm CPE (lossis NBR) loj dua cov roj nqus ntawm PVC resin. thiab sai dua, yuav nqus cov yas sai sai, yog li PVC resin tsis tuaj yeem nqus cov yas, uas yog tus yuam sij rau hose molding.
