Styrene-butadiene (SB) latex yog ib hom ntawm emulsion polymer siv nyob rau hauv ib tug xov tooj ntawm industrial thiab coj mus muag daim ntaub ntawv.Vim tias nws muaj ob hom monomers, styrene thiab butadiene, SB latex tau muab cais ua ib copolymer.Styrene yog muab los ntawm reacting benzene thiab ethylene, thiab butadiene yog ib tug byproduct ntawm ethylene ntau lawm.
Styrene-butadiene latex txawv ntawm ob qho tib si ntawm nws cov monomers thiab los ntawm ntuj latex, uas yog tsim los ntawm cov kua txiv ntawm Hevea brasiliensis ntoo (aka roj hmab ntoo).Nws kuj txawv ntawm lwm qhov chaw tsim khoom, styrene-butadiene roj hmab (SBR), uas qhia cov npe zoo sib xws tab sis muaj cov khoom sib txawv.
Kev tsim khoom ntawm Styrene-Butadiene Latex
Styrene-butadiene latex yog tsim los ntawm cov txheej txheem polymer emulsion.Qhov no suav nrog ntxiv cov monomers rau dej nrog rau cov surfactants, cov pib, carboxylic acids thiab cov monomers tshwj xeeb.Initiators ua rau cov saw-reaction polymerization uas koom nrog styrene monomer rau butadiene monomer.Butadiene nws tus kheej yog kev sib koom ua ke ntawm ob pawg yas, yog li nws muaj peev xwm ua haujlwm nrog plaub lwm yam monomer.Raws li qhov tshwm sim, nws tuaj yeem txuas ntxiv kev loj hlob ntawm cov saw hlau polymer tab sis kuj tseem tuaj yeem txuas ib lub saw hlau mus rau lwm qhov.Qhov no yog hu ua crosslinking, thiab nws tseem ceeb heev rau styrene-butadiene chemistry.Lub crosslinked ib feem ntawm cov polymer tsis yaj nyob rau hauv haum cov kuab tshuaj tab sis swells los ua ib tug gel zoo li matrix.Feem ntau cov khoom lag luam styrene-butadiene polymers muaj ntau qhov sib txuas, yog li lawv muaj cov ntsiab lus gel, cov cuab yeej tseem ceeb uas muaj kev cuam tshuam zoo rau kev ua haujlwm ntawm cov latex, tso cai rau ntau lub zog, lub zog, thiab elasticity dua li lwm cov ntaub ntawv.Tom ntej no, peb yuav tshawb xyuas seb cov khoom no tuaj yeem siv tau zoo li cas hauv ntau qhov kev lag luam thiab kev siv.
Kev siv lag luam
Styrene-butadiene latex muaj ntau cov txiaj ntsig, suav nrog kev lees txais thiab tensile / elongation tshuav nyiaj li cas.Qhov yooj ntawm cov copolymer no tso cai rau ib tug nyob ze-infinite cov sib tov uas ua rau cov dej tsis kam thiab adhesion rau nyuaj substrates.Cov khoom zoo ntawm SB latex no ua rau cov khoom siv hluavtaws no tseem ceeb rau ib pab pawg neeg thoob plaws kev lag luam.SB latex formulations feem ntau yog siv los ua txheej hauv cov khoom siv ntawv, xws li cov ntawv xov xwm, cov ntawv tshaj tawm thiab cov ntawv teev npe, kom ua tiav siab gloss, zoo luam tawm, thiab tiv taus roj thiab dej.SB latex txhim kho cov xim khi lub zog thiab, dhau los, ua rau daim ntawv smoother, tawv dua, ci dua thiab tiv taus dej ntau dua.Raws li ib qho ntxiv lawm, SB latex tsis tshua kim dua li lwm cov txheej txheej.SB latex yog ib qho kev xaiv nrov rau cov nplaum hauv qee qhov kev lag luam xws li flooring.Piv txwv li, cov polymer yog pom raws li lub nraub qaum txheej ntawm textiles zoo li cov ntaub pua plag tufted.Lub nraub qaum txheej muab cov dej tsis kam thiab tuav cov tufts nyob rau hauv qhov chaw, uas txhim kho kev ruaj ntseg thiab txo qis fraying ntawm ntug.Cov no tsuas yog qee qhov kev siv styrene-butadiene latex.Nyob rau hauv qhov tseeb, nws muab infinite possibilities, raws li muaj pov thawj los ntawm nws cov nqi hluav taws xob rau khiav khiav, textile coatings, siab rhiab nplaum nplaum, thiab nonwoven fabrics.Styrene butadiene polymer emulsions kuj yog ib qho tseem ceeb ntawm cov kua siv ua kua, thiab cov txheej txheem MVTR tsawg rau cov ntim khoom noj.
Post lub sij hawm: Aug-10-2022