Hais txog PVC hose formulation thiab raw khoom tsom xam
PVC hose yog ua los ntawm polyvinyl chloride resin los ntawm kev ntxiv ntau cov yas yas, ib qho nyiaj ntawm stabilizer thiab lwm yam auxiliaries los ntawm extrusion molding. Nws muaj cov yam ntxwv ntawm smoothness, lub teeb yuag, zoo nkauj tsos, softness thiab zoo xim. Nws yog dav siv nyob rau hauv kev tsim kho, tshuaj lom neeg kev lag luam, tsev neeg, dej infusion, kev thauj mus los ntawm corrosive nruab nrab, thiab kuj siv los ua hlau casing thiab hlau rwb thaiv tsev txheej.
Lub formulation ntawm PVC hose mas muaj xws li: PVC resin, tshav kub stabilizer, lubricant, plasticizer thiab colorant. Raws li kev soj ntsuam ntawm cov kev ntsuas saum toj no, cov qauv tsim yuav tsum ua kom tau raws li qhov yuav tsum tau muaj ntawm hardness nruab nrab thiab siab zog.
PVC hose ntau lawm txheej txheem
Batching → kneading → extrusion granulation → extrusion molding → traction → coiling → packaging → quality inspection → finished product
Analysis ntawm PVC hose muaj pes tsawg leeg
Txhawm rau txhim kho qib: thaum xaiv cov khoom siv pabcuam, sim xaiv cov ntaub ntawv pabcuam nrog tib yam lossis zoo sib xws refractive Performance index ntawm PVC resin (1.521.55). Vim tias cov ntaub ntawv raw nrog tib yam lossis zoo sib xws refractive index tau ua tiav rau hauv homogeneous sib tov, lawv qhov refractive index kuj zoo ib yam li cov ntaub ntawv raw. 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 degree ntawm cov khoom yuav tsis cuam tshuam heev.
Vim tias qhov loj ntawm cov yas yas hauv cov mis ntawm PV, PVC resin yuav tsum muaj cov roj zoo nqus, thiab cov khoom siv xoob yuav tsum tau xaiv. Nyob rau tib lub sij hawm, siab whiteness thiab zoo thermal stability ntawm resin yog yuav tsum tau. Batches nrog tsawg tus naj npawb ntawm impurities thiab ntses qhov muag. Raws li qhov ua tau raws li qhov yuav tsum tau muaj ntawm cov khoom siv kho tshuab, kev tsim cov PVC hoses yuav tsum sim siv cov resins nrog me ntsis qis molecular hnyav.
Vim tias feem ntau siv plasticizers DOP thiab DBP feem ntau muaj cov khoom uas tsis tshua muaj qhov hnyav molecular, thaum ua haujlwm kub siab tshaj 105 degree, lawv feem ntau volatilize thiab tsim npuas, thiab qhov kub thiab txias tsuas yog tswj tau ntawm theem qis. Nyob rau hauv cov ntaub ntawv no, lub plasticizing thiab melting degree ntawm resin nrog tsawg molecular yuag yog siab tshaj li resin nrog loj molecular hnyav, uas yog zoo los txhim kho qib ntawm cov khoom. Tsis tas li ntawd, resins nrog me ntsis qis molecular luj kuj yooj yim dua rau txheej txheem. Feem ntau, PVC-SG3, SG4 thiab SG5 resins tuaj yeem siv tau, uas tuaj yeem xaiv raws li cov khoom xav tau.
