Muaj 6 pawg loj ntawm cov yas siv feem ntau, polyester (PET polyethylene terephthalate), high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS).
Tab sis, koj puas paub yuav ua li cas txheeb xyuas cov yas no? Yuav ua li cas los tsim koj tus kheej "fiery ob lub qhov muag"? Kuv yuav qhia koj ib co tswv yim txoj kev, nws tsis yog nyuaj kom paub cov feem ntau siv plastics nyob rau hauv vib nas this!
Muaj kev kwv yees cov hau kev hauv qab no kom paub txog cov ntaub ntawv uas muaj: kev cim, kev qhia txog kev sib txuas, cov cim kev qhia, kev txheeb xyuas tus kheej, thiab lwm yam.
Thawj ob txoj hauv kev yog qhov yooj yim thiab siv tau yooj yim, thiab lawv tuaj yeem txheeb xyuas cov hom yas no zoo heev. Txoj kev txheeb xyuas qhov ntom ntom tuaj yeem faib cov yas thiab feem ntau siv hauv kev xyaum tsim khoom. Yog li ntawd, ntawm no peb mas qhia peb ntawm lawv.
01 Kev txheeb xyuas qhov tshwm sim
Txhua cov yas muaj nws tus yam ntxwv, muaj xim sib txawv, gloss, pob tshab,tawv, thiab lwm yam. Kev txheeb xyuas qhov tshwm sim yog kom paub qhov txawv ntawm ntau yam raws li qhovtsos yam ntxwvntawm cov yas.
Cov lus hauv qab no qhia txog cov yam ntxwv ntawm ntau yam khoom siv yas. Cov neeg ua haujlwm sorting muaj peev xwm paub qhov txawv ntawm cov yas raws li cov yam ntxwv zoo li no.
Kev txheeb xyuas qhov tshwm sim ntawm ntau yam khoom siv yas
1. Polyethylene PE
Khoom: Thaum tsis muaj xim, nws yog mis nyuj dawb, translucent, thiab waxy; cov khoom xav tias du thaum kov los ntawm tes, mos thiab tawv, thiab me ntsis elongated. Feem ntau, tsawg-density polyethylene yog softer thiab muaj transparency zoo dua, thaum high-density polyethylene yog nyuaj.
Cov khoom siv: yas zaj duab xis, hnab tes, cov kav dej, roj nruas, lub raj mis haus (calcium mis nyuj fwj), khoom siv txhua hnub, thiab lwm yam.
2. Polypropylene PP
Khoom: Nws yog dawb, translucent thiab waxy thaum tsis muaj xim; lighter tshaj polyethylene. Lub pob tshab kuj zoo dua li polyethylene thiab nyuaj dua polyethylene. Cov cua kub zoo heev, ua pa zoo, ua haujlwm kub txog 167 ° C.
Cov khoom siv: lub thawv, thoob, zaj duab xis, rooj tog, woven hnab, lub raj mis, lub tsheb bumpers, thiab lwm yam.
3. Polystyrene PS
Khoom: Pob tshab thaum tsis muaj xim. Cov khoom yuav ua suab nrov thaum nws poob los yog ntaus. Nws muaj gloss zoo thiab pob tshab, zoo ib yam li iav. Nws yog nkig thiab yooj yim tawg. Koj tuaj yeem khawb qhov saum npoo ntawm cov khoom nrog koj cov ntiv tes. Hloov kho polystyrene yog opaque.
Cov khoom siv: cov ntawv sau, khob, ntim khoom noj, cov khoom siv hauv tsev, cov khoom siv hluav taws xob, thiab lwm yam.
4. Polyvinyl chloride PVC
Khoom: Cov xim thawj yog daj me ntsis, translucent thiab ci iab. Lub pob tshab yog zoo dua li polyethylene thiab polypropylene, tab sis phem tshaj polystyrene. Nyob ntawm seb tus nqi ntawm cov khoom siv ntxiv, nws muab faib ua mos thiab tawv PVC. Cov khoom muag muag yog hloov tau thiab tawv, thiab xav tias nplaum. Cov khoom tawv tawv muaj qhov nyuaj siab dua li cov polyethylene tsawg dua, tab sis qis dua polypropylene, thiab kev ua kom dawb yuav tshwm sim ntawm qhov khoov. Nws tsuas tuaj yeem tiv taus cua sov txog 81 ° C.
Cov khoom siv: cov khau khau, cov khoom ua si, cov hlua khi, cov qhov rooj thiab qhov rais, cov ntawv sau, cov thawv ntim khoom, thiab lwm yam.
5. Polyethylene terephthalate PET
Properties: Transparency zoo heev, zoo zog thiab toughness tshaj polystyrene thiab polyvinyl chloride, tsis yooj yim tawg, du thiab ci nto. Resistant rau acid thiab alkali, tsis resistant rau kub kub, yooj yim rau deform (tuaj yeem tiv taus kub hauv qab 69 ° C).
Cov khoom lag luam: feem ntau cov khoom siv lub raj mis: Coke fwj, dej ntxhia dej, thiab lwm yam.
ntxiv
Cov 6 feem ntau siv ntawm cov yas tuaj yeem raug txheeb xyuas los ntawmcov khoom siv rov ua dua tshiab. Daim npav rov ua dua yog feem ntau nyob hauv qab ntawm lub thawv. Suav cim yog ob tug lej nrog "0" nyob rau hauv pem hauv ntej. Cov cim txawv teb chaws yog ib tus lej tsis muaj "0". Cov lej hauv qab no sawv cev tib hom yas. Cov khoom lag luam los ntawm cov tuam txhab tsis tu ncua muaj qhov cim no. Los ntawm cov khoom siv rov ua dua tshiab, hom yas tuaj yeem txheeb xyuas qhov tseeb.
Rau cov hom yas zoo tib yam, txoj kev sib txuas tuaj yeem siv los txheeb xyuas lawv kom raug. Feem ntau, koj yuav tsum paub xaiv thiab muaj tus tswv los coj koj mus rau lub sijhawm, lossis koj tuaj yeem nrhiav ntau yam plastics thiab ua cov kev sim sib xyaw ntawm koj tus kheej, thiab koj tuaj yeem paub lawv los ntawm kev sib piv thiab nco lawv ntau zaus. Tsis muaj shortcut. Nrhiav. Cov xim thiab tsis hnov tsw ntawm nplaim taws thaum hlawv thiab lub xeev tom qab tawm hauv hluav taws tuaj yeem siv los ua lub hauv paus rau kev txheeb xyuas.
Yog tias hom yas tsis tuaj yeem lees paub los ntawm qhov tshwm sim combustion, cov qauv ntawm cov yas uas paub txog tuaj yeem raug xaiv rau kev sib piv thiab kev txheeb xyuas kom tau txais txiaj ntsig zoo dua.
Cov yas muaj qhov sib txawv, thiab lawv cov dab dej thiab cov dej ntws hauv dej thiab lwm yam kev daws teeb meem kuj txawv. Cov kev daws teeb meem sib txawv tuaj yeem siv raupaub qhov txawv ntau yam. Qhov ntom ntawm ob peb cov khoom siv feem ntau thiab qhov ntom ntawm cov kua siv feem ntau yog qhia hauv cov lus hauv qab no. Cov kua sib txawv tuaj yeem xaiv tau raws li hom kev sib cais.
PP thiab PE tuaj yeem yaug tawm ntawm tus tsiaj nrog dej, thiab PP, PE, PS, PA, thiab ABS tuaj yeem muab yaug tawm nrog cov dej saturated.
PP, PE, PS, PA, ABS, thiab PC tuaj yeem ntab tawm nrog saturated calcium chloride aqueous tov. Tsuas yog PVC muaj qhov ntom ntom li PET thiab tsis tuaj yeem sib cais los ntawm PET los ntawm txoj kev ntab.
Lub sij hawm xa tuaj: Nov-30-2023