PVA Production process uye Wide Application
Polyvinyl Doro (PVA) imhando yepolymer yakagadzirwa kuburikidza nepolymerization yevinyl acetate inoteverwa nehydrolysis.Heino tarisiro yePVA yekugadzira maitiro uye yakafara mashandisiro ayo:
Kugadzira Maitiro:
- Polymerization yeVinyl Acetate:
- Vinyl acetate monomers inoitwa polymerized uchishandisa yemahara-radical initiator pamberi peinonyungudutsa kana semulsion.Iyi nhanho inoguma mukuumbwa kwepolyvinyl acetate (PVAc), chena, inonyungudika nemvura polima.
- Hydrolysis yePolyvinyl Acetate:
- Iyo PVAc polymer ine hydrolyzed nekuibata nealkaline solution (senge sodium hydroxide) pasi pemamiriro ekudzora.Iyi hydrolysis reaction inotsemura mapoka eacetate kubva kumusana wepolymer, zvichikonzera kuumbwa kwepolyvinyl doro (PVA).
- Kuchenesa uye Kuomesa:
- Iyo PVA mhinduro inotora matanho ekuchenesa kubvisa tsvina uye isina kubatwa monomers.Iyo yakacheneswa PVA mhinduro inoomeswa kuti iwane yakasimba PVA flakes kana hupfu.
- Kuwedzera Kugadziridza:
- Iyo PVA flakes kana hupfu inogona kuwedzeredzwa kugadziridzwa kuita akasiyana siyana senge magranules, pellets, kana mhinduro, zvichienderana nekwakagadzirirwa kushandiswa.
Wide Applications:
- Adhesives uye Binders:
- PVA inowanzoshandiswa sebhainda mune zvinonamira, kusanganisira matanda guruu, pepa guruu, uye machira anonamira.Inopa kunamatira kwakasimba kune akasiyana substrates uye inopa yakanakisa firimu-kugadzira zvivakwa.
- Micheka uye Fibers:
- PVA faibha dzinoshandiswa mukugadzira machira senge kuruka, kuruka, uye machira asina kuruka.Ivo vanoratidza zvimiro zvakaita senge yakakwira tensile simba, abrasion resistance, uye kugadzikana kwemakemikari.
- Pepa Coatings uye Kukura:
- PVA inoshandiswa mumapepa ekuputira uye saizi maumbirwo ekuvandudza kutsetseka kwepamusoro, kudhinda, uye kunamatira inki.Inowedzera simba uye kusimba kwezvigadzirwa zvemapepa.
- Zvekuvaka:
- PVA-yakavakirwa maumbirwo anoshandiswa mukuvaka zvinhu zvakadai sedhaka rinowedzera, mataira anonamira, uye simende machira.Vanovandudza kushanda, kunamatira, uye kusimba kwezvigadzirwa zvekuvaka.
- Packaging Mafirimu:
- Mafirimu ePVA anoshandiswa kurongedza maapplication nekuda kweakanakisa chipingamupinyi zvivakwa, hunyoro kuramba, uye biodegradability.Iwo anoshandiswa mukutakura chikafu, mafirimu ekurima, uye hunyanzvi hwekurongedza maapplication.
- Cosmetics uye Personal Care Zvigadzirwa:
- PVA inoshandiswa muzvizoro uye zvigadzirwa zvekuchengeta munhu senge vhudzi rekugadzira gels, makirimu, uye mafuta ekuzora.Inopa firimu-kugadzira zvimiro, kukora, uye kudzikamisa mhedzisiro.
- Zvekurapa uye Zvemishonga Zvishandiso:
- PVA inoshandiswa mune zvekurapa uye zvemishonga zvikumbiro senge masisitimu ekutumira zvinodhaka, machira ekupfekedza, uye machira ekubata lens.Iyo biocompatible, isiri-chepfu, uye inoratidza yakanakisa kunyungudika kwemvura.
- Indasitiri Yezvekudya:
- PVA inoshandiswa sekuwedzera kwechikafu mumashandisirwo akasiyana-siyana akadai semafirimu anodyiwa, encapsulation yezvinonhuhwira kana zvinovaka muviri, uye seyakakora mumiriri muzvigadzirwa zvekudya.Inoonekwa seyakachengeteka kudyiwa nevanhu.
Muchidimbu, Polyvinyl Doro (PVA) ipolymer inoshanda zvakasiyana-siyana ine huwandu hwekushandisa mumaindasitiri akadai seanonamira, machira, mapepa, kuvaka, kurongedza, zvekuzora, zvekurapa, zvemishonga, uye chikafu.Hunhu hwayo hwakasiyana hunoita kuti ive yakakodzera kune akasiyana maapplication anoda firimu-kuumba, adhesive, kusunga, chipingamupinyi, uye inonyungudika mvura.
Nguva yekutumira: Feb-15-2024