PVC yeeb nkab (PVC-U yeeb nkab) nyuaj PVC yeeb nkab, yog ua los ntawm PVC resin nrog stabilizer, lubricant thiab lwm yam kub nias extrusion molding, yog qhov ntxov tshaj plaws tsim thiab siv cov yeeb nkab yas.PVC-U yeeb nkab muaj zog corrosion kuj, kev sib txuas yooj yim, tus nqi qis thiab kev ntxhib los mos.Txawm li cas los xij, vim tias cov dej xau ntawm PVC-U monomer thiab cov khoom siv ntxiv, nws tsuas yog tsim nyog rau cov dej xa dej uas qhov ntsuas kub tsis tshaj 45 ℃.Cov kav dej yas yog siv rau cov kav dej, dej khib nyiab, tshuaj lom neeg, cua sov thiab cua txias, khoom noj, dej ntshiab, av nkos, roj, compressed cua thiab lub tshuab nqus tsev siv.
Nws muaj lub zog tensile thiab compressive zoo: tab sis nws qhov yooj yim tsis zoo li lwm cov kav dej yas.
Tsis tshua muaj dej tsis kam: cov phab ntsa ntawm PVC-U yeeb nkab yog du heev, thiab cov dej tsis kam tiv taus tsawg heev.Nws qhov roughness coefficient tsuas yog 0.009, thiab nws lub peev xwm thauj dej yog 20% siab dua li ntawm cov yeeb nkab hlau ntawm tib txoj kab uas hla, thiab 40% siab dua li cov yeeb nkab ua vaj tse.
Kev tiv thaiv corrosion zoo heev thiab tshuaj tiv thaiv: PVC-U yeeb nkab muaj cov kua qaub zoo heev, alkali tsis kam thiab corrosion kuj.Nws tsis cuam tshuam los ntawm noo noo thiab av pH, thiab tsis tas yuav muaj kev tiv thaiv corrosion thaum cov yeeb nkab tso.
Nrog cov dej zoo nruj: kev teeb tsa ntawm PVC-U yeeb nkab muaj cov dej nruj zoo, txawm tias nws txuas nrog cov nplaum los yog roj hmab nplhaib.
Cov ntaub ntawv pov thawj: PVC-U raj tsis yog qhov chaw ntawm cov as-ham thiab yog li tsis raug rau nas tua.Raws li kev tshawb fawb los ntawm National Health Foundation hauv Michigan, nas tsis txhob tom PVC-U yeeb nkab.
Kev ntsuas kev ua tau zoo: kev kho lub sij hawm, shrinkage tus nqi, splitting zog, tensile khoom stripping zog, thermal stability, siv sij hawm, lub sij hawm cia, tso tawm cov teeb meem tshuaj.
Txheej txheem ntau lawm
Raw khoom + auxiliary npaj → sib tov → conveying thiab pub → yuam pub → Cone-type twin-screw extruder → extrusion pwm → sizing lub tes tsho → spray lub tshuab nqus tsev teeb lub thawv → soaking txias dej tank → number case printing tshuab → crawler tractor → riam lifting tshuab → yeeb nkab stacking khib → tiav cov khoom kuaj thiab ntim.
PVC tuaj yeem muab faib ua mos PVC thiab tawv PVC.
Hard PVC nyiaj rau li 2/3 ntawm kev ua lag luam, thiab muag PVC nyiaj rau 1/3.
Mos PVC feem ntau yog siv rau hauv pem teb, qab nthab thiab tawv, tab sis vim tias mos PVC muaj cov yas yas (qhov no kuj yog qhov sib txawv ntawm cov PVC mos thiab tawv PVC), qhov kev ua tau zoo ntawm lub cev tsis zoo (raws li cov kav dej yuav tsum tau muaj qee yam dej siab, mos PVC tsis haum rau kev siv), yog li nws siv tau txwv.
Hard PVC tsis muaj plasticizer, yog li nws yooj yim rau kev tsim, zoo lub cev, yog li nws muaj kev loj hlob zoo thiab daim ntawv thov nqi.Nyob rau hauv cov txheej txheem ntawm cov ntaub ntawv PVC, ob peb additives yog khi rau ntxiv, xws li stabilizer, plasticizer thiab lwm yam.Yog tias siv tag nrho cov khoom tiv thaiv ib puag ncig, cov yeeb nkab PVC kuj tsis muaj tshuaj lom thiab tsis qab los tiv thaiv ib puag ncig.
Post lub sij hawm: Dec-06-2022