Yuav ua li cas yog PVC, thiab dab tsi yog nws muaj feem rau ntawm tib neeg lub cev

Yuav ua li cas yog PVC? Qhov no cov ntaub ntawv uas yog ib tug polyvinyl tshuaj dawb. Nws belongs rau cov pab pawg neeg ntawm thermoplastics - yas, uas tom qab cov khoom txoj kev txheej txheem tseem muaj peev xwm nqa. PVC net khoom no yog muaj li ntawm 43 feem pua ethylene. Qhov seem 57 feem pua - yog chav chlorine.

PVC khoom - yog dab tsi? Polyvinyl tshuaj dawb tso rau hauv daim ntawv ntawm cov hmoov thiab yog siv nyob rau hauv ntau cov nplais ntawm kev khwv nyiaj txiag. Lub nto moo tshaj plaws cov khoom, uas yog siv nyob rau hauv qhuav ntawm no cov ntaub ntawv uas - nws yog yas qhov rais. Zus tau tej cov qhov rais profiles nyob rau hauv particulate polyvinyl tshuaj dawb yog ntxiv tshwj xeeb pigments, stabilizers, modifiers thiab ntau lwm yam additives. Ua tsaug rau lawv, cov khoom yuav zoo invulnerable rau ncaj qha tshav ntuj, kub thiab lwm yam ib puag ncig yam tseem ceeb hloov mus hloov los ntawm ib puag ncig.

Yuav ua li cas yog PVC? lub cev nta

Lub ntsiab feature ntawm PVC khoom - nws lub zog. Raws li nws cov khoom PVC yog xyaum tsis raug deformation thiab lwm yam cov neeg kho tshuab stresses. Tus heev tib degree ntawm lub dag lub zog ntawm qhov no cov ntaub ntawv uas nyob rau cov qauv ntawm cov macromolecules li zoo raws li cov qauv ntawm cov polymer.

PVC khoom - yog dab tsi? feature

Qhov no cov ntaub ntawv uas yog yus li ib tug incombustible thermoplastic khoom uas lends nws tus kheej yuav tsum tau machined rau pa tshuab cov cuab yeej, thiab muaj peev xwm muab tau yooj yim welded los ntawm huab cua kub nyob rau hauv ib tug kub ntawm 200-300 degrees Celsius. Nyob rau hauv tas li ntawd, nws muaj peev xwm ua raws li ntau hom adhesives (feem ntau txhais tau tias perchlorvinyl raws li cob). Ntxiv mus, lub active khoom tej zaum yuav adhered mus rau ntoo, pob zeb ua thiab hlau cov khoom. PVC tsis ntshai ntawm raug rau ntau yam kev acids zoo li raws li aliphatic, thiab chlorinated uas muaj ntxhiab hydrocarbons. Lub zog ntawm nplaum thiab welds yog hais txog 85-90 feem pua ntawm cov zog ntawm cov khoom nws tus kheej.

Vim nws siab zog thiab dabtsi yog khoov elasticity polyvinyl zoo thov cov fishermen uas artisanal tsim lub sab sauv qhov chaw ntawm spinning, raws li zoo raws li lub caij ntuj no nuv ntses pas nrig. Xyaum qhia tau hais tias hais tias cov khoom tsis txhob poob lawv lub zog txawm nyob rau hauv kub ntawm Rho tawm 45 degrees Celsius.

dielectric zog

Enumerating PVC zog kuj tsim nyog los nco ntsoov qhov tseeb hais tias PVC yog ib tug zoo insulator (tsis muaj kev siv hluav taws xob tam sim no los ntawm nws tus kheej). Txawm li cas los, thaum rhuab mus rau ib tug kub ntawm 85 degrees Celsius los yog ntau yam khoom sai sai poob cov zog. Raws li rau qhov hnyav, tus ceev ntawm PVC yog hnyav dua polyethylene, tab sis sib zog tshaj PTFE thiab phenol formaldehyde yas.

High PVC hluav taws kuj yog tiav los ntawm kev siv nyob rau hauv nws cov kev siv thiab muaj kev tivthaiv xws li chlorine. Qhov ntawd yog nws thiaj li kev pheej hmoo ntawm flammability nyuaj PVC.

tshuaj zog

Raws li peb muab sau ua ntej lawm, tus PVC yog suab tiv thaiv kab mob rau cov teebmeem ntawm qee yam ntawm acids. Nws yog qhov tseeb - PVC tsis hloov nws cov khoom nyob rau hauv qhov kev txiav txim ntawm alkalis, roj av, kerosene, ntsev dlaws, thiab hlau. Tsis tas li ntawd, mus txog rau 60 degrees Celsius active khoom yog resistant rau hydrochloric thiab formic acid. PVC yog resistant rau oxidation thiab raug glycerol, nqaijrog thiab glycols. Raws li rau lub cawv, cov polyvinyl tshuaj dawb yog tsis soluble nyob rau hauv ethyl thiab methyl cawv, ntau dua haus cawv, raws li zoo raws li lubricants thiab roj. Yog tsis lam tau lam ua rau cov teebmeem ntawm nws thiab lub acidic khib nyiab dej.

Qhov twg yog nws siv?

Yuav ua li cas yog PVC, peb twb pom tawm, tam sim no wb tham txog uas sectors no cov ntaub ntawv uas yog siv. Polyvinyl tshuaj dawb yog dav siv nyob rau hauv qhuav ntawm saj zawg zog yas los xij (rau phab ntsa thiab flooring ntaub ntawv), films, kev tiv thaiv cov hnab looj tes thiab ntau lwm yam ntaub ntawv thiab cov khoom. Txhav uas tsis yog-plasticized PVC kav no yog ua los invulnerable rau cov teebmeem ntawm xeb, raws li zoo li ib co qhov chaw ntawm lub qhov rooj thiab qhov rai. Cov hluav taws xob field of cov khoom siv rau rwb thaiv tsev ntawm nyob ntawm tej. Ua nws zoo li khoom ua si, ntawv sau thiab ntaus pob ncaws pob khoom. PVC fiber siv ua nuv ntses nets, kev kho mob linen, knitwear thiab ntau yam lim muaj ntaub. Raws li koj tau pom, PVC yog siv nyob rau hauv yuav luag tag nrho cov lag luam thiab tsev neeg.

Cov yam ntxwv ntawm PVC khoom

Nyob rau hauv lub Lavxias teb sab kev ua lag luam yuav nrhiav tau tej khoom nyob rau hauv feem ntau PVC:

1. Lub flooring (nyob rau hauv lwm yam lus - linoleum).
2. Zaj duab xis.
3. PVC panels.

Hauv qab no, peb tham me ntsis txog txhua yam ntawm cov hom ntawm cov khoom uas tau teev tseg saum toj no.

Yuav ua li cas yog PVC-coated? Qhov no yog ib tug saum npoo nyob rau hauv uas tshwj xeeb PVC vuas, npaj rau tso rau hauv pem teb tau siv. Tej zaum yuav muaj raws li ib tug yooj yim square, thiab cov qauv ntawm complex zoo.

PVC zaj duab xis - yog dab tsi? Raws li nws cov khoom, nws yog ib tug heev pob tshab, saj zawg zog thiab me ntsis stretchy khoom. Zoo li tag nrho cov lwm yam khoom nws yog resistant rau alcohols thiab acids, tab sis muaj ib tug tshwj xeeb muaj peev xwm kis tau oxygen. Uas yog vim li cas lub ntim, ntim rau hauv no zaj duab xis rau ib ntev lub sij hawm tsis poob Svoge kev nthuav qhia.

Yuav ua li cas yog PVC panels? Qhov no cov ntaub ntawv uas, uas yog siv rau tag ntawm ceilings thiab phab ntsa nyob rau hauv qhov sib txawv cov chav. Feem ntau siv rau cladding phab ntsa nyob rau hauv lub chav ua noj thiab nyob rau hauv lub chav da dej.

Raws li polyvinyl tshuaj dawb muaj feem xyuam rau tib neeg lub cev?

Yas chloride nws tus kheej yog yus raws li ib tug heev muaj zog tshuaj lom Nyob rau hauv combustion emits tej yam tshuaj lom. Nyob rau hauv tus txiv neej, qhov no tshuaj muaj terato-, carcinogenic thiab mutagenic nyhuv. Raws li ib tug tshwm sim, heev heev cov kev tshawb fawb zaum muaj pov thawj hais tias tej yam uas PVC rau tib neeg ua rau mob cancer nyob rau hauv ntau yam nruab nrog cev thiab cov nqaij (nrog rau lub hlwb, lub ntsws thiab lub siab), thiab kuj tau ua txhaum lub lymphatic thiab hematopoietic system. Nrog rau qhov kev txiav txim ntawm END ntawm yas chloride yuav txawm ua tuag tes tuag taw ntawm poob siab system kom txog rau thaum lub teb cessation ntawm kev ua pa. Txawm li cas los, niaj hnub manufacturers muaj npaum li cas mus rau hauv tus account tag nrho cov khoom, thiab yog li ntawd tsim PVC tshwj xeeb technology. Niaj hnub nimno khoom ntawm polyvinyl tshuaj dawb (yog tias zoo) tsis muaj xws li ib tug txaus ntshai tej yam nyob rau hauv tus tib neeg. Yog li ntawd, nyob rau hauv thiaj li tsis mus raug lawv noj qab haus huv thaum yuav PVC khoom yuav tsum tso siab rau lub ntiaj teb no nto moo manufacturers.

Yog li ntawd, peb pom hais tias PVC yog thiab zoo li cas cov nyhuv nws muaj nyob rau hauv tib neeg lub cev.