(1) Polyvinyl chloride (PVC) tso zaj duab xis muaj qhov kub zoo rau kev tiv thaiv, lub teeb kis tau tus mob, huab cua tiv taus, muag muag, thiab cov duab yooj yim. Nws yog haum raws li cov khoom siv npog sab nraud rau cov tsev ntsuab, cov tsev loj thiab cov khoom me me thiab nruab nrab. Qhov tsis zoo yog tias zaj duab xis muaj qhov sib faib loj (1.3 g / cm3), thiab thaj chaw pov hwm ntawm qee qhov hnyav ntawm qhov tso zaj duab xis yog 1/3 tsawg dua ntawm qhov ntawm cov polyethylene zaj duab xis (PE), uas ua rau tus nqi nce; nws ua nyuaj thiab nkig ntawm qhov kub tsis tshua muaj siab, thiab nws yooj yim ua kom muag muag thiab so ntawm qhov siab kub; Tom qab cov tshuaj ntxiv sai sai, zaj duab xis saum npoo yuav nqus cov plua plav, uas yuav cuam tshuam rau lub teeb xa mus. Cov seem zaj duab xis tsis tuaj yeem hlawv vim tias muaj ntau yam tshuaj lom.
Cov khoom tseem ceeb ntawm PVC tsev cog khoom yeeb yaj kiab yog:
OTsis muaj cov tshuaj tiv thaiv kev laus ntxiv rau hauv cov txheej txheem ntawm cov yeeb yaj kiab PVC lub tsev ntsuab, thiab lub sijhawm siv tsuas yog 4-6 hlis xwb. Nws tuaj yeem tsim cov qoob loo ib-lub caij, khib lub zog, nce kev ua haujlwm thiab peev txheej, thiab maj mam raug tshem tawm.
FilmPVC los tiv thaiv kev laus zaj duab xis yog tsim rau hauv zaj duab xis los ntawm kev ntxiv cov tshuaj tiv thaiv kev laus rau cov khoom siv raw thiab calendering nws. Lub sijhawm siv tau zoo yog txog li 8-10 lub hlis. Nws muaj lub teeb kis tau zoo, kev txuag tshav kub thiab huab cua tsis kam. Nws yog cov khoom siv tseem ceeb rau kev vov loj thiab me thiab nruab nrab kem qhov chaw. Nws yog feem ntau siv rau lub caij nplooj ntoo hlav thaum ntxov thiab lub caij nplooj zeeg caij sau qoob.
PVC non-drip los tiv thaiv kev laus zaj duab xis (PVC ob chav tiv thaiv zaj duab xis) muaj kev tiv thaiv kev laus thiab dej tsis sib thooj tib lub sijhawm, lub teeb xa hluav taws xob zoo thiab kev tiv thaiv kub, drip tsis pub ntev rau 4-6 lub hlis, thiab kev nyab xeeb kev pab cuam lub neej ntawm 12-18 lub hlis, Nws yog dav siv thiab yog qhov nyiam dua cov ntaub npog rau kev ua haujlwm siab thiab txuag hluav taws xob hnub ci ntsuab. Nws yog qhov zoo dua los ua cov ntaub ntawv npog tsev cog khoom.
Ntxiv rau kev tiv thaiv huab cua thiab dej-ua yeeb yam zoo tshaj ntawm PVC huab cua tiv thaiv thiab drip-resistant zaj duab xis, sab saum toj ntawm zaj duab xis tau kho kom txo tau cov nyiaj ntawm plasticization, sib dua nqus hmoov av, thiab txhim kho lub teeb hloov, uas yog cov txiaj ntsig rau lub caij ntuj no thiab caij nplooj ntoos hlav cog qoob loo nyob rau hauv hnub ci tsev cog khoom thiab tsev cog khoom.
(2) Polyethylene (PE) tsev cog khoom zaj duab xis yog lub teeb nyob rau hauv kev ntxhib los mos (kev sib tsoo sib luag yog li 0.96 g / cm3), muag, yooj yim rau cov duab, zoo hauv lub teeb kis, tsis muaj tshuaj lom, tsim rau kev ua ntau yam yeeb yaj kiab tsev thiab zaj duab xis mulching, thiab yog qhov kev ua liaj ua teb tseem ceeb hauv kuv lub teb chaws. Hom ntawm qes. Qhov tsis zoo yog: kev tsis zoo huab cua tsis kam thiab tiv thaiv tshav kub, thiab nyuaj rau kev ua haujlwm. Yog tias cov yeeb yaj kiab ntsuab tsim, cov khoom siv ntxiv xws li cov khoom siv tiv thaiv kev laus, cov roj ntsha tsis muaj dej, thiab cov neeg ua haujlwm tiv thaiv thermal yuav tsum muab ntxiv kom tau raws li cov kev xav tau ntawm kev tsim khoom.
