PVC yog dab tsi? Cov khoom no yog polyvinyl chloride. Nws belongs rau cov pab pawg ntawm cov thermoplastics - yas, uas, tom qab molding txheej txheem ntawm cov khoom, tuav lub peev xwm los ua dua tshiab. PVC ntshiab yog 43% ethylene. Qhov seem 57 feem pua yog cov tshuaj chlorine ua ke.
PVC khoom - yog dab tsi? Polyvinyl chloride yog tso tawm nyob rau hauv daim ntawv ntawm ib tug hmoov thiab yog siv nyob rau hauv ntau sectors ntawm kev lag luam. Cov khoom nto moo tshaj plaws hauv kev tsim cov khoom siv no yog cov hlau-yas qhov rais. Rau zus tau tej cov qhov rais profiles, tshwj xeeb pigments, stabilizers, modifiers thiab ntau lwm yam auxiliary additives yog ntxiv rau hmoov PVC. Ua tsaug rau lawv, cov khoom lag luam yuav ua rau muaj kev cuam tshuam rau lub hnub ncaj qha, kev hloov pauv kub thiab lwm yam ib puag ncig.
PVC yog dab tsi? Lub cev ntas
Qhov tseem ceeb ntawm cov khoom siv PVC yog durability. Raws li nws cov khoom, polyvinyl chloride yog xyaum tsis raug deformations.thiab lwm yam kev nyuaj siab. Qhov tib theem ntawm lub zog ntawm cov khoom no nyob ntawm tus qauv ntawm macromolecules, nrog rau cov qauv ntawm cov polymer.
PVC khoom - yog dab tsi? Feature
Cov tshuaj no yog cov yam ntxwv uas tsis yog-combustible thermoplastic khoom uas tuaj yeem ua tau zoo ntawm cov cav tov thiab yooj yim welded nrog cua kub ntawm qhov kub ntawm 200-300 degrees Celsius. Tsis tas li ntawd, nws tuaj yeem ua raws li ntau hom kua nplaum (feem ntau cov no yog cov khoom raws li perchlorovinyl resin). Ntxiv mus, cov khoom no tuaj yeem ua rau cov khoom ntoo, pob zeb thiab hlau. PVC tsis ntshai kis rau ntau hom acids, nrog rau aliphatic, chlorinated thiab muaj ntxhiab hydrocarbons. Lub zog ntawm cov nplaum thiab cov pob qij txha yog li 85-90 feem pua ntawm lub zog ntawm cov khoom nws tus kheej.
Vim nws cov elasticity siab thiab khoov lub zog, polyvinyl chloride yog dav nyob rau hauv kev thov ntawm cov neeg nuv ntses uas ua rau sab sauv ntawm spinning rods nyob rau hauv ib tug handicraft txoj kev, nrog rau lub caij ntuj no nuv ntses pas nrig. Raws li kev xyaum qhia, cov khoom zoo li no tsis poob lawv cov khoom txawm tias qhov kub thiab txias ntawm qhov kub ntawm 45 degrees Celsius.
Dielectric zog
Sau cov khoom ntawm PVC, nws tseem yuav tsum tau nco ntsoov qhov tseeb tias polyvinyl chloride yog dielectric zoo (tsis ua hluav taws xob los ntawm nws tus kheej). Txawm li cas los xij, thaum rhuab mus rau qhov kub ntawm 85 degrees Celsius lossis ntau dua, cov khoom no poob sai sai. Hais txog qhov hnyav, qhov ntom ntawm PVC yog ntau duahnyav dua polyethylene, tab sis sib dua li PTFE thiab phenol-formaldehyde yas.
Qhov hluav taws kub siab ntawm PVC yog ua tiav los ntawm kev siv cov khoom xws li tshuaj chlorine hauv nws cov khoom. Nws yog nws tus uas txo qhov kev pheej hmoo ntawm flammability ntawm nruj PVC.
tshuaj muaj zog
Raws li peb tau sau tseg ua ntej, PVC yog kev tiv thaiv kab mob rau qee yam acids. Qhov no muaj tseeb - polyvinyl chloride tsis hloov nws cov khoom raws li kev ua ntawm alkalis, roj av, kerosene, ntsev thiab hlau daws.
Tsis tas li, txog 60 degrees Celsius, cov khoom no tiv taus hydrochloric thiab formic acid. PVC tiv taus oxidation thiab cov teebmeem ntawm glycerin, rog thiab glycols. Raws li rau cawv, polyvinyl chloride tsis yaj nyob rau hauv ethyl thiab methyl alcohols, ntau dua cawv, nrog rau lubricating thiab zaub roj. Nws kuj tseem tiv thaiv qhov cuam tshuam ntawm cov dej phwj tuaj.
Nws thov nyob qhov twg?
PVC yog dab tsi, peb twb pom lawm, tam sim no cia peb tham txog kev lag luam uas cov khoom siv no siv. Polyvinyl chloride tau pom daim ntawv thov dav hauv kev tsim cov ntaub ntawv yas hloov tau (rau phab ntsa thiab hauv pem teb), cov yeeb yaj kiab, hnab looj tes tiv thaiv thiab ntau lwm yam khoom siv thiab cov khoom. Rigid, unplasticized polyvinyl chloride yog siv los tsim cov kav dej uas tsis muaj zog rau corrosion, nrog rau qee qhov ntawm lub qhov rooj thiab qhov rais. Hauv kev lag luam hluav taws xob engineering, cov khoom siv no yog siv los thaiv cov xov hlau. Lawv kuj ua cov khoom ua si, ntawv sau thiab khoom ua si los ntawm nws. Polyvinyl chloride fibers yog siv rauzus tau tej cov nuv ntses nets, kho mob ris tsho hauv qab, knitwear thiab ntau yam lim technical fabrics. Raws li koj tau pom, PVC yog siv nyob rau hauv yuav luag tag nrho cov lag luam thiab tsev neeg.
YPVC khoom specification
Nyob rau hauv kev lag luam Lavxias, koj tuaj yeem pom cov khoom zoo li no los ntawm polyvinyl chloride:
- Flooring (ua lwm yam lus - linoleum).
- YPVC panels.
Ntxhais hmoob movie.
Hauv qab no peb yuav piav qhia luv luv txhua yam ntawm cov khoom saum toj no.
YPVC txheej yog dab tsi? Qhov no yog ib qho chaw uas tshwj xeeb PVC vuas tau siv, tsim los tso rau hauv pem teb. Lawv tuaj yeem muaj ob qho tib si square yooj yim thiab cov qauv tsim.
PVC zaj duab xis - yog dab tsi? Raws li nws cov khoom, nws yog cov pob tshab, hloov tau yooj yim thiab me ntsis stretchy khoom. Zoo li txhua yam khoom lag luam, nws tiv taus cov cawv thiab cov kua qaub, tab sis nws muaj peev xwm dhau oxygen. Tias yog vim li cas lub thawv ntim hauv zaj duab xis tsis poob nws qhov kev nthuav qhia ntev.
PVC panels yog dab tsi? Qhov no yog cov khoom siv los ua kom tiav cov qab nthab thiab phab ntsa hauv ntau chav. Feem ntau siv rau phab ntsa cladding hauv chav ua noj thiab chav dej.
PVC cuam tshuam rau tib neeg lub cev li cas?
Vinyl chloride nws tus kheej yog cov tshuaj lom neeg muaj zog heev, tso cov tshuaj lom thaum hlawv. Ntawm tib neeg, cov tshuaj no muaj terato-, carcino- thiab mutagenic nyhuv. Raws li kev tshawb fawb ntau, cov kws tshawb fawb muajNws tau raug pov thawj tias tib neeg raug rau PVC ua rau mob qog noj ntshav hauv ntau yam kabmob thiab cov ntaub so ntswg (xws li lub hlwb, lub ntsws thiab daim siab), thiab tseem cuam tshuam cov lymphatic thiab hematopoietic systems. Nrog rau qhov ua tsis tu ncua hauv qhov siab, vinyl chloride tuaj yeem ua rau tuag tes tuag taw ntawm lub paj hlwb mus txog ua kom tiav ua pa nres. Txawm li cas los xij, niaj hnub manufacturers tau coj mus rau hauv tus account tag nrho cov khoom no thiab yog li tsim PVC siv cov cuab yeej tshwj xeeb. Cov khoom lag luam niaj hnub ua los ntawm polyvinyl chloride (yog tias lawv muaj txiaj ntsig zoo) tsis muaj qhov txaus ntshai rau tib neeg. Yog li ntawd, txhawm rau kom tsis txhob muaj kev pheej hmoo rau koj txoj kev noj qab haus huv, thaum yuav cov khoom siv PVC, koj yuav tsum ntseeg tsuas yog cov tuam txhab lag luam thoob ntiaj teb paub zoo.
Yog li, peb pom tias PVC yog dab tsi thiab nws cuam tshuam dab tsi rau tib neeg lub cev.
