Vim li cas Lub Hnab Ua Ntawm Pvc Durable?

Cov khoom siv PVC yog ib hom ntawm cov khoom siv yas kho kom zoo nkauj, uas luv luv rau cov khoom siv polyvinyl chloride, PVC (Polyvinyl Chloride, luv rau PVC) cob yog cov thermoplastic polymerization los ntawm vinyl chloride monomer (Vinyl Chloride Monomer, luv rau VCM). Nws yog ua los ntawm PVC cob ua cov khoom siv tseem ceeb, nrog tus nqi tsim nyog ntawm tus neeg sawv cev los tiv thaiv kev laus, hloov kho, thiab lwm yam, los ntawm kev sib xyaw, kev sib xyaw, kev nqus nqus thiab lwm yam txheej txheem. PVC yog cov tshuaj amorphous polymer, muaj 5% -10% crystallinity microcrystals (melting point 175 degrees), cov phaus molecular, crystallinity, softening taw tes thiab lwm yam khoom siv lub cev ntawm PVC sib txawv nrog cov tshuaj tiv thaiv polymerization (kub).

Vim tias muaj kev phom sij nws ua rau tib neeg lub cev, Tebchaws Europe, Nyij Pooj thiab Kaus Lim Qab Teb yuav tsum tau txwv cov khoom uas siv PVC ua cov khoom siv raw. Feem ntau, qhov zoo tshaj plaws ntawm PVC resin yas khoom yog nplaim hluav taws kub, tawg tsis kam, tshuaj tiv thaiv, thiab tsis muaj paug roj thiab dej vapor.

Tsis tas li ntawd, nws yog cov khoom siv dav dav nrog qhov zoo tshaj tus nqi / kev ua tau zoo vim tias nws ua tiav txhua yam kev ua haujlwm, cov khoom lag luam pob tshab, hluav taws xob rwb thaiv tsev, kub rwb thaiv tsev, suab rwb thaiv tsev thiab kev poob siab.

Vim tias PVC yog cov khoom siv tawv yas, ua kom nws muag, nws yog qhov tsim nyog yuav tsum tau ntxiv ntau ntawm cov yas, cov yas yob tau yooj yim tso tawm hauv cov khoom cua sov.