Nyob hauv nws daim ntawv thov tseem ceeb tshaj plaws, polyvinyl acetate ua cov khoom siv ua yeeb yaj kiab hauv cov xim dej (latex) xim; nws kuj siv rau hauv cov nplaum.
Vim li cas polyvinyl acetate siv los ua cov nplaum?
PVA adhesives tsim cov yeeb yaj kiab zoo nkauj uas muaj huab cua zoo thiab tiv taus dej, roj, roj, thiab roj av. Cov khoom ntxiv yog qhov pib siab, yuav luag tsis pom kab, muag muag ntawm 30-45 ° C, zoo biodegradation tsis kam, tsis zoo rau nkag mus rau hauv load, thiab tus nqi qis.
polyvinyl acetate ua li cas nrog?
Polyvinyl cawv tuaj yeem hloov mus rau cov esters sib txawv, lossis nws tuaj yeem cuam tshuam nrog aldehydes, xws li butyraldehyde lossis formaldehyde, los tsim acetals. Polyvinyl cawv tuaj yeem ua esterified nrog nitric acid los tsim cov polymer tawg.
Lub sij hawm twg yog siv rau polyvinyl acetate?
Polyvinyl acetate, PVA, PVAc, poly, yog cov roj hmab hluavtaws polymer nrog cov qauv n. … Polyvinyl acetate yog ib feem ntawm cov kua nplaum uas siv dav, feem ntau hu ua ntoo kua nplaum, kua nplaum dawb, cov nplaum nplaum, cov kua nplaum tsev kawm ntawv, Elmer's kua nplaum, lossis PVA kua nplaum.
Vim li cas vinyl acetate tseem ceeb?
Vinyl acetate yog ib qho tseem ceeb muaj monomer uas yog siv los ua homopolymers thiab copolymer nrog ntau yam kev siv. … Lub homopolymer poly (vinyl acetate)1 (PVA lossis PVAc) yog ib qho tseem ceeb polymer siv rau hauv cov nplaum, textile sizing, thiab txawm zom cov pos hniav.
