Focus on Cellulose ethers
English

Ifu ya polyvinyl

Ifu ya polyvinyl

Inzoga ya Polyvinyl (PVA) ni ifu ya elegitoronike ikora ya polymer ifite uburyo bwinshi bwo gukoresha mubikorwa bitandukanye.Nibintu bifite umurongo, polymeric bikozwe muri hydrolysis ya polyvinyl acetate (PVAc).Urwego rwa hydrolysis (DH) ya PVA rugena imbaraga zayo mumazi, hamwe nagaciro ka DH byerekana imbaraga nyinshi.Ifu ya PVA iraboneka mubyiciro bitandukanye, bitewe nagaciro ka DH nuburemere bwa molekile.

Ibyiza bya PVA ifu ya PVA ifu ya PVA ifite ibintu byinshi byihariye bituma ihitamo gukundwa mubikorwa byinshi.Bimwe muri ibyo bintu birimo:

  1. Amazi meza: Ifu ya PVA irashobora gushonga cyane, bigatuma byoroshye gushonga mumazi kugirango bibe igisubizo kiboneye.
  2. Gukora firime: Ifu ya PVA irashobora gukora firime isobanutse, yoroheje, kandi ikomeye mugihe yashonga mumazi hanyuma ikuma.
  3. Adhesion: Ifu ya PVA irashobora kwizirika ku bice bitandukanye, bigatuma ihitamo gukundwa cyane.
  4. Ibinyabuzima bishobora kwangirika: Ifu ya PVA irashobora kwangirika, bivuze ko ishobora gusenywa nibikorwa bisanzwe.

Gukoresha ifu ya PVA

  1. Ibifatika: Ifu ya PVA isanzwe ikoreshwa nkigice cyibanze mu gufatira.Ikoreshwa mugukora ibiti bya kole, kole yimpapuro, hamwe nudusimba twimyenda.Ibiti bya PVA birakwiriye guhuza ibice byoroshye, nk'impapuro, ikarito, n'ibiti.
  2. Gupakira: Ifu ya PVA ikoreshwa mugukora ibikoresho byo gupakira nka firime na coatings.Filime ikozwe mu ifu ya PVA ifite imbaraga zingana, imiterere ya barrière nziza, kandi neza neza.
  3. Inganda z’imyenda: Ifu ya PVA ikoreshwa mu nganda z’imyenda kugirango ikore ibintu bingana ubudodo n’imyenda.Ikoreshwa mukwongerera imbaraga no gukomera kwintambara cyangwa imyenda, byoroshye kuboha no gufata.
  4. Inganda zimpapuro: Ifu ya PVA ikoreshwa munganda zimpapuro nkinyongera-yuzuye.Ikoreshwa mugutezimbere imbaraga, kurwanya amazi, no gucapura impapuro.
  5. Inganda zubaka: Ifu ya PVA ikoreshwa mubikorwa byubwubatsi nkumuhuza wa sima nibindi bikoresho byubwubatsi.Ikoreshwa kandi nk'igifuniko hejuru ya beto kugirango irusheho guhangana n’amazi.
  6. Ibicuruzwa byita kumuntu ku giti cye: Ifu ya PVA ikoreshwa mubicuruzwa byita kumuntu nka spray umusatsi, shampo, na geles.Ikoreshwa nka firime-yambere kandi ikabyimbye kugirango itezimbere imikorere nibikorwa byibyo bicuruzwa.
  7. Inganda zubuvuzi: Ifu ya PVA ikoreshwa mubikorwa byubuvuzi kugirango ikore hydrogel, kwambara ibikomere, hamwe na sisitemu yo gutanga ibiyobyabwenge.Biocompatibilité hamwe n-amazi-yogukoresha ya PVA bituma iba ibikoresho byiza kuriyi porogaramu.

Ubwoko bw'ifu ya PVA ifu ya PVA iraboneka mubyiciro bitandukanye, ukurikije agaciro ka DH n'uburemere bwa molekile.Agaciro DH k'ifu ya PVA kari hagati ya 87% na 99%.Iyo hejuru ya DH agaciro, niko amazi-ashonga ifu ya PVA ni.Uburemere bwa molekuline yifu ya PVA kuva ku bihumbi byinshi kugeza kuri miliyoni.

  1. Ifu yuzuye ya hydrolyzed PVA: Ubu bwoko bwa PVA ifu ifite DH agaciro ka 99% cyangwa irenga.Ifite amazi menshi kandi ifite ibintu byiza byo gukora firime.Bikunze gukoreshwa mubisabwa nka adhesives, gupakira, hamwe nimyenda.
  2. Igice cya hydrolyzed PVA ifu: Ubu bwoko bwifu ya PVA bufite agaciro ka DH kuva kuri 87% kugeza 98%.Ntibishobora gukama amazi kuruta ifu ya PVA hydrolyzed yuzuye kandi ifite imiterere yo gukora firime.Bikunze gukoreshwa mubisabwa nkimpapuro nubwubatsi.
  1. Uburemere buke bwa PVA ifu ya PVA: Ubu bwoko bwa poro ya PVA bufite uburemere buke bwa molekile kandi bukoreshwa mubisabwa nka coatings, ibifatika, nibicuruzwa byawe bwite.
  2. Ifu ya molekile iremereye cyane PVA: Ubu bwoko bwifu ya PVA bufite uburemere buke bwa molekile kandi bukoreshwa mubisabwa nka hydrogel hamwe na sisitemu yo gutanga ibiyobyabwenge.

Gufata no kubika ifu ya PVA Ifu ya PVA igomba kubikwa ahantu hakonje, humye kure yizuba nisoko yubushyuhe.Igomba kubikwa mu kintu cyumuyaga mwinshi kugirango irinde kwinjiza amazi mu kirere.Ifu ya PVA ni hygroscopique, bivuze ko ifite imyumvire yo gukuramo ubuhehere buturuka mu kirere, bushobora kugira ingaruka ku miterere yabwo.

Ifu ya PVA igomba gukoreshwa neza kugirango wirinde guhumeka no kuribwa.Mugihe ukoresha ifu ya PVA, birasabwa kwambara uturindantoki turinda, amadarubindi, na mask.Ifu ya PVA irashobora gutera uruhu n'amaso kandi irashobora kwangiza iyo uyinjiye.

Mu gusoza, ifu ya PVA ni ibintu bitandukanye kandi bifite uburyo butandukanye bwo gukoresha mu nganda zitandukanye.Imiterere yihariye nko gukama amazi, gukora firime, gufatira hamwe, hamwe na biodegradability bituma ihitamo gukundwa mubikorwa byinshi.Ubwoko bw'ifu ya PVA ikoreshwa biterwa na porogaramu, kandi ni ngombwa kuyifata no kuyibika neza kugirango ibungabunge imiterere yayo.

Igihe cyo kohereza: Apr-15-2023
Ikiganiro cya WhatsApp Kumurongo!