PVC cov ntaub ntawv ntsig txog kev paub

Cov keeb kwm ntawm PVC hauv kev lag luam kho mob tuaj yeem taug qab mus rau xyoo 1950s. Lub sijhawm ntawd, PVC tau siv los ua cov khoom siv kho mob xws li cov hnab ntim ntshav, cov hlab ntsha, thiab catheters. Vim nws qhov yooj yooj yim, corrosion kuj thiab antibacterial zog, PVC khoom yog ib qho ntawm cov khoom zoo tshaj plaws rau kev tsim khoom siv kho mob. Nrog kev nce qib ntawm kev kho mob thev naus laus zis thiab kev xav tau ntau ntxiv, daim ntawv thov ntau ntawm PVC cov ntaub ntawv hauv kev lag luam kho mob kuj nthuav dav. Tam sim no, cov ntaub ntawv PVC tau dav siv hauv angioplasty, kev phais plawv, cov hlab ntsha, cov khoom siv hauv cov chav kho mob, cov ntaub pua tsev thiab lwm yam. Nyob rau tib lub sijhawm, muaj ntau thiab ntau yam ntawm cov ntaub ntawv PVC, xws li mos PVC, tawv PVC, semi-mos thiab tawv PVC, thiab lwm yam, uas tuaj yeem xaiv raws li cov khoom siv kho mob sib txawv kom tau raws li kev kho mob.

Cov khoom siv PVC tau dhau los hloov pauv tseem ceeb hauv ob peb lub xyoo dhau los los ua cov khoom siv ib puag ncig. Cov txheej txheem tsim khoom ib txwm siv rau PVC siv los koom nrog kev siv tshuaj lom neeg xws li phthalates thiab txhuas stabilizers, uas muaj kev cuam tshuam tsis zoo rau ib puag ncig thiab tib neeg kev noj qab haus huv. Txawm li cas los xij, nrog kev nce qib ntawm thev naus laus zis thiab kev paub txog cov teeb meem ib puag ncig, cov txheej txheem tsim khoom tshiab thiab nyab xeeb tau tsim. Piv txwv li, ntau lub tuam txhab tau txais cov txheej txheem hu ua "non-phthalate plasticizers," uas yog ib qho kev nyab xeeb dua rau cov yas yas. Tsis tas li ntawd, cov hlau lead stabilizers tau hloov nrog cov kev nyab xeeb dua li calcium-zinc stabilizers. Ntxiv mus, PVC cov kev pabcuam rov ua dua tshiab tau teeb tsa los txo cov khoom pov tseg, thiab cov khoom siv PVC tam sim no rov ua dua thiab tuaj yeem siv los tsim cov ntaub ntawv tshiab. Cov kev siv zog no ua rau PVC cov khoom siv ib puag ncig thiab muaj kev xaiv siv tau rau ntau yam kev siv.

PVC ua npuas ncauj board yog cov khoom siv nrog kev ua haujlwm zoo, kev tiv thaiv corrosion, kev poob siab thiab rwb thaiv tsev, uas yog tsim rau ntau yam kev siv. Cov hauv qab no yog cov lus piav qhia ntxaws ntxaws ntawm cov txheej txheem tsim khoom ntawm PVC ua npuas ncauj board: 1. PVC khoom pretreatment: Ua ntej, PVC hmoov yog ntxiv rau lub tov khoom thiab tov nrog lwm cov khoom xyaw los ua cov khoom siv PVC. 2. Plasticizer ntxiv: Ntxiv cov khoom siv PVC rau lub plasticizer thiab do kom huv si kom cov plasticizer thiab PVC sib tov sib npaug. 3. Kev npaj ua npuas ncauj: sib tov tshuaj npaj xws li ammonium chloride, sodium bicarbonate thiab poov tshuaj stearate nyob rau hauv kev faib ua feem los ua foaming agent. 4. Foaming agent ntxiv: Ntxiv cov foaming tus neeg sawv cev rau cov khoom siv PVC thiab sib tov rau hauv ib rab. Thaum qhov kub thiab txias tau mus txog, tus neeg sawv cev tshuab yuav hnov ​​​​mob thiab PVC ua npuas ncauj yuav pib ua npuas ncauj. 5. Kev ua qauv: Siv cov xovxwm kub lossis extruder los ua cov txheej txheem PVC ua npuas ncauj rau hauv cov duab thiab loj. 6. Kev ua haujlwm thib ob: Raws li qhov xav tau, kev ua haujlwm theem nrab xws li txiav, xuas nrig ntaus, zaj duab xis npog thiab lwm yam tuaj yeem nqa tawm. 7. Kev tshuaj xyuas thiab ntim khoom: Thaum kawg cov PVC ua npuas ncauj board raug tshuaj xyuas thiab kuaj xyuas kom ntseeg tau tias cov qauv zoo. Tom qab ntawd nws tau ntim rau shipping, cia, thiab muag. Zuag qhia tag nrho, kev tsim cov txheej txheem ntawm PVC ua npuas ncauj pawg thawj coj saib yuav tsum muaj cov khoom sib piv thiab kev tswj xyuas kom ntseeg tau zoo thiab ua haujlwm ntawm lub rooj tsavxwm.