Polyvinyl alcohol

Polyvinyl utywala Polymer eyenziweyo leyo ngokulula enyibilikayo emanzini. Yayifunyenwe ngo-1924 ngu ekhemisi ezimbini - Gonelem kunye Germany - ngoncedo basabela saponification.

iipropati ngokomzimba

Polyvinyl utywala - ngumgubo emhlophe, kokuba ukukwazi ukwenza ifilimu. Le Polymer uyaqina irubhrikhi, kodwa ekubeni ezi kuxhomekeka kumgangatho ukufuma (it ibizela ulwelo), uqine unciphisa, kunye ductility enkulu lwenzeka xa iqondo elithile ukufuma. It has iimpawu hygroscopic, oko ngokulula unyityilikiswa (ingakumbi amanzi). Xa izinyibilikisi organic ezifana amafutha kunye neeoyile, ukuba akakwazi ukuba ukunyibilika. Xa usebenzisa le nto Akukho iziphumo zinetyhefu, ngoko kuqwalaselwa nabungozi.

ukufumana utshwala

Polyvinyl utywala okanye PVA ilungisiwe ukususela Polyvinyl acetate ngu haydrolisis okanye alcoholysis kwaye ekuveliseni ngohlobo granules okanye powder. iindlela ngeendlela zeteknoloji, ukususela kokulula ukuya kakhulu kwaye nexesha elininzi isetyenziswe ekulungisweni PVA.

Polyvinyl utywala - ukusetyenziswa

PVA ngoku isetyenziswa ngokubanzi. Unako ukudlala indima thickener kulu ukwenziwa kunye ishampu, ivelise impahla latex. Isetyenziswa ngempumelelo ukubuyisela restorers lwemizobo. Ngenxa kwiipropati yayo hygroscopic, lisetyenziswa kwi nokudalwa iindlela zisempilweni. Zonke iintlobo ukucupha, tampons kunye detox zenziwe usebenzisa PVA. Musa ukulibala utywala Polyvinyl, kunye nabavelisi ukutya. Isetyenziswa njengento emulsifier ekuvelisweni eyemayonnaise, sauce, ketchups kunye nezinye iimveliso zokutya, kwaye isetyenziswe incasa enhancer confectionery.

yesilungu, kakhulu, ithabathe ezinye iimpawu PVA. Oku kusetyenziswa ekwenziweni kwamayeza athile, phambi kokuba azithobe ngokugqibeleleyo icocwe evela ukungcola. Ophthalmologists Polyvinyl utywala esetyenziselwa ukulungiselela of wamehlo kwaye igrisi ukuba lenses contact. Nkqu oncologists baye bafumana isicelo unyango lomhlaza PVA. Ngokukodwa, kufuneka ukuba enze inkqubo embolization non-yotyando. Kwaye asinguye uluhlu iphela izicelo ze Polyvinyl utywala amayeza.

Kushishino lwamalaphu kweli PVA isetyenziswa kususwa kagesi, kunye nephepha - kuba iphepha okurisayikilisha. Ngaphezu koko, yinto yinxenye ebalulekileyo lokusila yintlama. Polyvinyl kotywala abakhi ezifunekayo kunye metallurgists, abasuki kunye nabavelisi ipeyinti kunye ivanishi. Zonke izityalo ezivelisa imicu ngumntu asetyenziswa ekwenziweni PVA, obanika amandla yinkqubo imicu isiphathi.

Nkqu lesayensi of eziphilayo uye wasebenzisa PVA kwi immobilization enqanda kunye neeseli. Polyvinyl utywala kwaye wafumana isicelo kushicilelo, kushicilelo ethile screen. Kulo mhlaba usetyenziswa njengendawo umaleko Polymer kwinkqubo ukukopa. Ingasetyenziswa kwakhona ekupakishweni okanye izinto akhuselayo ekuvelisweni kumacandelo enamathela ngenxa yokuba ngomaleko PVA kalula isusiwe.

Ukwenza imveliso shishino kunye nokusebenzisa mngundo kwakhona isetyenziswe ngempumelelo, le Polymer. PVA ngoku kuya kuxhaphaka kakhulu kuqoqosho. Iyafumaneka ngexabiso lula kwezothutho (idla kwiingxowa zeplastiki, zipakishwe ezingxoweni iphepha) kwindawo yothutho esekhusini ukuze uphephe manzi. Ekubeni utywala Polyvinyl na olunokutsha, kuyimfuneko ukuthobela imigaqo yokhuseleko ngexesha ukugcinwa nokuphathwa.