Cov kav dej yas yas yog dab tsi?
Cov kav dej yas yas yog dab tsi?

Video: Cov kav dej yas yas yog dab tsi?

Video: Cov kav dej yas yas yog dab tsi?
Video: 2/23/22. Poj Nplog Yug Tau Me Nyuam Txawv Heev/Meskas Muab Russia Kaw Ib Puas Tsav Yam/Hmong News. 2024, Kaum ib hlis
Anonim

Yas : Cov yeeb nkab yas los ua ABS (acrylonitrile-butadiene-styrene) lossis PVC (polyvinyl-chloride). Feem ntau cov tsev txij li nruab nrab-1970 muaj cov kav dej yas thiab fittings vim nws pheej yig thiab yooj yim rau siv.

Hais txog qhov no, cov kav dej yas yog dab tsi?

Feem ntau cov yeeb nkab yas systems yog ua los ntawm cov khoom siv thermoplastic. Txoj kev tsim khoom yog melting cov khoom, shaping thiab ces txias. Cov kav dej feem ntau yog tsim los ntawm extrusion.

Ib sab saum toj no, cov khoom siv dab tsi yog siv rau cov kav dej? Feem ntau yog xim hlau kav yog ua los ntawm cov hlau los yog hlau, xws li tsis tiav, dub (lacquer) steel, carbon steel, stainless hlau, galvanized steel, tooj dag, thiab hlau ductile. Hlau raws kav yuav raug corrosion yog tias siv nyob rau hauv ib tug heev oxygenated dej ntws.

Kuj Paub, vim li cas cov kav dej ua los ntawm PVC?

PVC cov kav dej yog As PVC yog cov yas qis carbon, PVC cov kav dej xav tau lub zog tsawg dua thiab muaj peev txheej tsawg los tsim khoom. Vim lawv qhov hnyav, tsawg zog siv thaum thauj. PVC cov kav dej kav ntev nrog qhov tsawg kawg nkaus ntawm kev saib xyuas thiab lawv tau yooj yim recyclable. Ntau yam tshiab PVC cov kav dej muaj cov khoom siv rov ua dua tshiab.

PVC puas tsim kev puas tsuaj rau tib neeg?

PVC muaj txaus ntshai tshuaj ntxiv nrog rau phthalates, txhuas, cadmium, thiab/lossis organotins, uas tuaj yeem yog tshuaj lom rau koj tus menyuam txoj kev noj qab haus huv. Cov no tshuaj lom additives tuaj yeem tawm los yog evaporate rau saum huab cua thaum lub sij hawm, ua rau muaj kev phom sij tsis tsim nyog rau menyuam yaus.

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