Styrene-butadiene (SB) latex imhando yakajairika yeemulsion polymer inoshandiswa mune akati wandei maindasitiri nekutengesa maapplication.Nekuti inoumbwa nemhando mbiri dzakasiyana dzemonomers, styrene uye butadiene, SB latex inorongerwa secopolymer.Styrene inotorwa kubva mukuita kwebenzene uye ethylene, uye butadiene inogadzirwa nekugadzirwa kwe ethylene.
Styrene-butadiene latex inosiyana kubva kune ese ari maviri monomers uye kubva kune yakasarudzika latex, iyo inogadzirwa kubva muto weHevea brasiliensis miti (aka rubber miti).Iyo yakasiyanawo kubva kune imwe yakagadzirwa yakagadzirwa, styrene-butadiene rubber (SBR), iyo inogovera zita rakafanana asi inopa zvakasiyana-siyana zvezvivakwa.
Kugadzirwa kweStyrene-Butadiene Latex
Styrene-butadiene latex inogadzirwa kuburikidza neiyo polymer emulsion process.Izvi zvinosanganisira kuwedzera mamonomers kumvura pamwe chete nema surfactants, initiator, carboxylic acids uye specialty monomers.Initiators inokonzeresa iyo chain-reaction polymerization inobatanidza iyo styrene monomer kune butadiene monomer.Butadiene pachayo mubatanidzwa wemapoka maviri evinyl, saka inokwanisa kuita nemamwe mana monomer unit.Nekuda kweizvozvo, inogona kuwedzera kukura kwepolymer cheni asi zvakare inokwanisa kubatanidza imwe polymer cheni kune imwe.Izvi zvinonzi crosslinking, uye zvakakosha zvakanyanya kune styrene-butadiene chemistry.Iyo yakachinjika chikamu chepolymer hainyungudika muzvinonyungudutsa zvakakodzera asi inozvimba kuita gel-senge matrix.Zvizhinji zvekutengesa styrene-butadiene polymers zvakanyanya kuyambuka, saka ivo vane yakakwira gel content, yakakosha pfuma ine simba rakasimba pakuita kwelatex, ichibvumira kuoma kwakawanda, simba, uye elasticity kupfuura zvimwe zvinhu.Kumusoro kunotevera, isu tichaongorora kuti zvivakwa izvi zvinogona kushandiswa zvakanaka sei kune akati wandei maindasitiri uye maapplication.
Zvekutengesa Zvishandiso
Styrene-butadiene latex inopa akati wandei mabhenefiti, anosanganisira kugashira kuzadza uye tensile/elongation chiyero.Iko kuchinjika kweiyi copolymer inobvumira kune iri pedyo-isingaperi nhamba yezvisanganiswa izvo zvinoguma nekukwirira kwemvura kuramba uye kunamatira kune inonetsa substrates.Uhu hunhu hweSB latex hunoita kuti chigadzirwa ichi chikoshe kune boka rinogara richikura remisika.SB latex formulations inowanzoshandiswa seyakaputira muzvigadzirwa zvemapepa, zvakadai semagazini, mapepa uye mabhuku, kuti uwane kupenya kwepamusoro, kudhindwa kwakanaka, uye kuramba mafuta nemvura.SB latex inosimudzira simba rekusunga pigment uyezve, inoita kuti bepa ripfavise, riome, rivheneke uye rirambe richiramba mvura.Sebhonasi yakawedzerwa, SB latex inodhura zvakanyanya pane mamwe machira.SB latex isarudzo yakakurumbira yekunamatira mune mamwe maindasitiri senge pasi.Semuyenzaniso, iyo polima inowanikwa seyakarembera yekumashure yemachira senge tufted kapeti.Kuvhara kwemashure kunopa kudzivirira kwemvura uye kunobata tufts panzvimbo, iyo inovandudza kugadzikana uye inoderedza fraying pamucheto.Aya angori mamwe ekushandiswa kwe styrene-butadiene latex.Muchokwadi, inopa mikana isingaperi, sekuratidzwa kwayo nekushandisa kwayo pakumhanyisa matiraki, machira ekupfeka, anomisikidza anomisikidza anoomesa, uye machira asina kuruka.Styrene butadiene polymer emulsions zvakare chinhu chakakosha mumvura-yakaiswa membranes, uye yakaderera MVTR barriers coatings yekurongedza chikafu.
Nguva yekutumira: Aug-10-2022