xov xwm

PVC pob tshab hoseyog ua los ntawm PVC resin los ntawm kev ntxiv ib tug loj npaum li cas ntawm plasticizer, ib tug tej yam nqi ntawm stabilizer thiab lwm yam additives, los ntawm extrusion molding.Nws muaj cov yam ntxwv ntawm pob tshab thiab du, lub teeb yuag, zoo nkauj tsos, softness thiab zoo xim, thiab lwm yam. Nws yog dav siv nyob rau hauv kev tsim kho, tshuaj lom neeg kev lag luam thiab tsev neeg, siv rau dej infusion, conveying corrosive nruab nrab, thiab kuj siv los ua hlau casing thiab hlau rwb thaiv tsev txheej.

PVC pob tshab hose mis mas suav nrog PVC cob, kub stabilizer, lubricant, plasticizer thiab colorant.Cov qauv tsim qauv yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm pob tshab, nruab nrab hardness thiab muaj zog dua.Txhawm rau txhim kho pob tshab, hauv kev xaiv cov khoom siv ua haujlwm, kom deb li deb tau xaiv cov khoom siv hluav taws xob refractive thiab PVC resin refractive index (1) tib yam lossis zoo sib xws additives.Vim hais tias tib yam los yog zoo sib xws refractive index ntawm cov khoom raw ua tiav rau hauv ib qho sib tov sib xyaw, qhov refractive index thiab cov refractive index ntawm cov khoom raw zoo sib xws.Nyob rau hauv txoj kev no, qhov tshwm sim tawg nyob rau hauv cov kev taw qhia ntawm qhov teeb meem teeb meem yuav tsis nce, yog li cov turbidity ntawm cov khoom yuav tsis nce, thiab cov pob tshab ntawm cov khoom yuav tsis cuam tshuam ntau dhau.

PVC cob: Vim tias muaj ntau ntawm cov yas yas hauv cov mis, PVC resin yuav tsum tau nqus cov roj zoo, thiab cov roj hmab xoob yuav tsum tau xaiv.Nyob rau tib lub sij hawm, siab whiteness thiab zoo thermal stability ntawm resin yuav tsum tau.Batch nrog tsawg impurity suav thiab fisheye suav.Nyob rau hauv lub hauv paus ntawm ua tau raws li qhov yuav tsum tau ntawm txhua yam khoom, zus tau tej cov PVC pob tshab hose yuav tsum tau siv kom deb li deb raws li ua tau nrog qis molecular hnyav resin.Vim hais tias feem ntau siv plasticizer DOP thiab DBP feem ntau muaj cov khoom uas tsis tshua muaj molecular loj, thaum ua haujlwm kub siab tshaj 105 ℃, feem ntau tuaj yeem volatilize thiab tsim npuas, qhov kub tuaj yeem tswj tau ntawm sab qis xwb.Nyob rau hauv cov ntaub ntawv no, lub degree ntawm plasticization thiab melting ntawm resin nrog tsawg tus txheeb ze molecular hnyav yog siab dua li ntawm resin nrog loj txheeb ze molecular hnyav, uas yog conducive rau kev txhim kho pob tshab ntawm cov khoom.Tsis tas li ntawd, qis molecular hnyav resins kuj yooj yim rau kev ua.General PVC-SG3, SG4, SG5 resin tuaj yeem xaiv raws li cov khoom xav tau.

Plasticizer: Feem ntau xav txog nws cov nyhuv plasticizing, txias tsis kam, ua haujlwm ntev thiab cuam tshuam ntawm PVC pob tshab.DOP yog cov yas yas uas muaj kev ua tau zoo, thiab nws qhov ntsuas tsis pom kev yog 1.484, uas yog ze rau PVC (1.52 ~ 1.55).Feem ntau siv los ua lub ntsiab plasticizer rau PVC pob tshab hose.Lub refractive index ntawm DBP yog 1.492, uas tseem nyob ze ntawm PVC cob.Nws yuav tsis cuam tshuam rau cov pob tshab ntau dhau, tab sis nws txoj kev loj hlob tsis zoo, thiab nws tsis hloov pauv, thiab feem ntau yog siv los ua DOP auxiliary plasticizer.Txhawm rau txhim kho qhov ua kom txias, DOS tuaj yeem muab ntxiv ua cov yas ntxiv.Qhov ntau npaum ntawm plasticizer yog 40 ~ 55 feem ntau.

Thaum tshav kub kub stabilizer: Ntxiv rau qhov yuav tsum tau ua kom sov, tiv thaiv huab cua thiab kev ua haujlwm yooj yim thiab lwm yam khoom siv yooj yim, yuav tsum tau tsom rau nws cov pob tshab.Organotin stabilizer yog qhov zoo tshaj plaws thiab feem ntau siv thaum tshav kub kub stabilizer rau PVC pob tshab khoom, tab sis tus nqi siab dua.Hlau xab npum stabilizers, xws li calcium stearate, barium stearate, zinc stearate, thiab lwm yam, feem ntau yog siv thaum tshav kub kub stabilizers rau TRANSPARENT hlab ntawm PV C. Cov khoom compound Ca / Zn, Ba / Zn, Ba / Ca thiab Ba / Ca / Zn yog zoo tagnrho.Txhawm rau txo cov organotin, calcium stearate (calcium xab npum) thiab zinc stearate (zinc xab npum) nrog cov pob tshab zoo thiab lubrication tau siv los ua cov pab txhawb nqa.