Inkqubo yeMveliso yePVA kunye nezicelo eziBanzi

I-Polyvinyl Alcohol (PVA) yipolymer eyenziwe nge-polymerization ye-vinyl acetate elandelwa yi-hydrolysis. Nantsi isishwankathelo senkqubo yemveliso yePVA kunye nokusetyenziswa kwayo okubanzi:

Inkqubo yeMveliso:

1. Ukwenziwa kwePolymerization yeVinyl Acetate:
   • I-Vinyl acetate monomers i-polymerized usebenzisa i-free-radical initiator phambi kwe-solvent okanye njenge-emulsion. Eli nyathelo libangela ukubunjwa kwe-polyvinyl acetate (PVAc), i-polymer emhlophe, e-soluble yamanzi.
2. IHydrolysis yePolyvinyl Acetate:
   • I-polymer ye-PVAc i-hydrolyzed ngokuyiphatha ngesisombululo se-alkaline (njenge-sodium hydroxide) phantsi kweemeko ezilawulwayo. Le mpendulo ye-hydrolysis iqhekeza amaqela e-acetate kwi-polymer backbone, okukhokelela ekubunjweni kwe-polyvinyl alcohol (PVA).
3. Ukucocwa kunye nokomisa:
   • Isisombululo se-PVA sithatha amanyathelo okucoca ukususa ukungcola kunye ne-monomers engaphendulwanga. Isisombululo se-PVA esicociweyo siye somiswa ukufumana iiflakes zePVA eziqinileyo okanye umgubo.
4. Ukuqhubekeka phambili:
   • I-PVA flakes okanye i-powder inokuqhutyelwa phambili kwiifom ezahlukeneyo ezifana ne-granules, iipellets, okanye izisombululo, kuxhomekeke kwisicelo esijoliswe kuyo.

Usetyenziso Olubanzi:

1. Izinto zokuncamathelisa kunye nezibophelelo:
   • I-PVA idla ngokusetyenziswa njengesibophelelo kwizinto zokuncamathelisa, kuquka iglu yomthi, iglu yephepha, kunye nezinto zokuncamathelisa ezilukiweyo. Ibonelela ngokubambelela ngokuqinileyo kwii-substrates ezahlukeneyo kwaye inikezela ngeempawu ezibalaseleyo zokwenza ifilimu.
2. Umqhaphu kunye neeFayibha:
   • Iintsinga zePVA zisetyenziswa kwizinto ezilukiweyo ezifana nokuluka, ukunitha, kunye namalaphu angalukwanga. Babonisa iipropathi ezinje ngokuqina okuphezulu, ukuxhathisa kwe-abrasion, kunye nokuzinza kweekhemikhali.
3. Iingubo zePhepha kunye nobungakanani:
   • I-PVA isetyenziselwa ukugquma kwephepha kunye nokulinganisa ubukhulu ukuphucula ukuguda komphezulu, ukuprinta, kunye nokuncamathela kwe-inki. Ukwandisa amandla kunye nokuqina kweemveliso zephepha.
4. Izinto zokwakha:
   • I-PVA-based formulations isetyenziswe kwizinto zokwakha ezifana nezongezo zodaka, i-adhesives tile, kunye neengubo ze-cementitious. Baphucula ukusebenza, ukubambelela, kunye nokuqina kweemveliso zokwakha.
5. Iifilimu zokuPakisha:
   • Iifilimu zePVA zisetyenziselwa ukupakisha izicelo ngenxa yeempawu zazo ezibalaseleyo zokuthintelwa, ukuxhathisa ukufuma, kunye nokubola kwebhayoloji. Zisetyenziselwa ukupakisha ukutya, iifilimu zezolimo, kunye nezicelo zokupakisha ezizodwa.
6. Izinto zokuthambisa kunye neeMveliso zokuKhathalela umntu:
   • I-PVA isetyenziswa kwizinto zokuthambisa kunye neemveliso zokhathalelo lomntu ezifana neegels zokulungisa iinwele, iikhrimu, kunye nezinto zokuthambisa. Inika iipropati zokwenza ifilimu, ukuqina, kunye nemiphumo yokuzinzisa.
7. Usetyenziso lwezoNyango noLwamayeza:
   • I-PVA isetyenziswa kwizicelo zonyango kunye namayeza afana neenkqubo zokuhanjiswa kweziyobisi, ukubopha amanxeba, kunye neengubo zokudibanisa iilensi. I-biocompatible, ayinayo ityhefu, kwaye ibonisa ukunyibilika okugqwesileyo kwamanzi.
8. Ishishini lokutya:
   • I-PVA isetyenziswa njengesongezo sokutya kwizicelo ezahlukeneyo ezinje ngeefilimu ezityiwayo, i-encapsulation yencasa okanye izondlo, kwaye njenge-agent etyebisayo kwiimveliso zokutya. Ithathwa njengekhuselekile ukuba isetyenziswe ngabantu.

Ngamafutshane, i-Polyvinyl Alcohol (PVA) yipolymer eguquguqukayo enoluhlu olubanzi lwezicelo kuwo wonke amashishini afana nokuncamathelisa, amalaphu, iphepha, ulwakhiwo, ukupakishwa, izinto zokuthambisa, ezonyango, amayeza, kunye nokutya. Iimpawu zayo ezikhethekileyo zenza ukuba zilungele izicelo ezahlukeneyo ezifuna ukwenziwa kwefilimu, i-adhesive, i-binding, umqobo, kunye neempawu ezinyibilikayo emanzini.