I-Styrene-butadiene (SB) latex iwuhlobo olujwayelekile lwe-emulsion polymer esetshenziswa kwinani lezinhlelo zokusebenza zezimboni nezohwebo.Ngenxa yokuthi yakhiwe izinhlobo ezimbili ezihlukene zama-monomers, i-styrene ne-butadiene, i-SB latex ihlukaniswa njenge-copolymer.I-styrene isuselwa ekuphenduleni kwe-benzene ne-ethylene, futhi i-butadiene iwumphumela wokukhiqizwa kwe-ethylene.
I-Styrene-butadiene latex ihluke kuzo zombili izinhlobo zayo kanye ne-latex yemvelo, eyenziwe ngobisi lwezihlahla ze-Hevea brasiliensis (izihlahla zenjoloba).Iphinde ihluke kwenye inhlanganisela ekhiqiziwe, irabha ye-styrene-butadiene (SBR), eyabelana ngegama elifanayo kodwa inikeza isethi ehlukile yezakhiwo.
Ukukhiqizwa kwe-Styrene-Butadiene Latex
I-Styrene-butadiene latex ikhiqizwa ngenqubo ye-polymer emulsion.Lokhu kuhlanganisa ukungeza ama-monomer emanzini kanye nama-surfactants, ama-initiators, ama-carboxylic acid nama-monomer akhethekile.Abaqalisi bacupha i-chain-reaction polymerization ehlanganisa i-styrene monomer ku-butadiene monomer.I-Butadiene ngokwayo inyunyana yamaqembu amabili e-vinyl, ngakho iyakwazi ukusabela namanye amayunithi amane e-monomer.Ngenxa yalokho, inganweba ukukhula kochungechunge lwe-polymer kodwa futhi ikwazi ukuxhumanisa iketango le-polymer kwelinye.Lokhu kubizwa ngokuthi i-crosslinking, futhi kubaluleke kakhulu kumakhemikhali e-styrene-butadiene.Ingxenye exhunyanisiwe ye-polymer ayincibiliki kuzincibilikisi ezifanele kodwa iyakhukhumala ukuze yakhe i-matrix efana nejeli.Ama-polymers amaningi e-styrene-butadiene okuhweba axhumene kakhulu, ngakho anokuqukethwe kwejeli ephezulu, impahla ebalulekile enethonya elinamandla ekusebenzeni kwe-latex, okuvumela ukuqina, amandla, nokunwebeka kunezinye izinto.Ngokulandelayo, sizohlola ukuthi lezi zakhiwo zingasetshenziswa kanjani kahle kuzo zonke izimboni nezinhlelo zokusebenza.
Ukusetshenziswa Kwezohwebo
I-styrene-butadiene latex inikeza inani lezinzuzo, okuhlanganisa ukwamukela isigcwalisi kanye nebhalansi ye-tensile/elongation.Ukuvumelana nezimo kwale copolymer kuvumela inombolo ecishe ingapheli yezingxube eziholela emazingeni aphezulu okumelana namanzi nokunamathela kuma-substrates ayinselele.Lezi zimfanelo ze-SB latex zenza lokhu kokwenziwa kubaluleke eqenjini lezimakethe elikhula njalo.Ukwakhiwa kwe-latex ye-SB kuvame ukusetshenziswa njengokumboza emikhiqizweni yephepha, efana nomagazini, amaflaya namakhathalogi, ukuze kuzuzwe isicwebezelisi esiphezulu, ukuphrinta okuhle, nokumelana nowoyela namanzi.I-SB latex ithuthukisa amandla okubopha e-pigment futhi, ngokulandelayo, yenza iphepha libe bushelelezi, liqine, likhanye futhi limelane namanzi.Njengebhonasi eyengeziwe, i-SB latex ibiza kancane kunezinye izimbotshana.I-SB latex iyinketho ethandwayo yokunamathela ezimbonini ezithile ezifana ne-flooring.Isibonelo, i-polymer itholakala njenge-back coating of textiles like carpeted tufted.I-back coating inikeza ukumelana kwamanzi futhi ibambe ama-tufts endaweni, okuthuthukisa ukuzinza futhi kunciphise ukubola emaphethelweni.Lezi ezinye zokusetshenziswa kwe-styrene-butadiene latex.Eqinisweni, ihlinzeka ngamathuba angenamkhawulo, njengoba kufakazelwa ukusetshenziswa kwayo kwamathrekhi agijimayo, izindwangu zendwangu, izinto ezinamathelayo ezizwela ukucindezela, nezindwangu ezingalukiwe.Ama-emulsions e-polymer e-styrene butadiene nawo ayingxenye eyinhloko kuma-membrane afakwe uketshezi, kanye nezimbotshana eziphansi ze-MVTR zokupakisha ukudla.
Isikhathi sokuthumela: Aug-10-2022