Styrene-butadiene (SB) latex shine nau'in emulsion na yau da kullun da ake amfani da shi a cikin aikace-aikacen masana'antu da kasuwanci da yawa.Domin ya ƙunshi nau'ikan monomers iri biyu daban-daban, styrene da butadiene, SB latex an rarraba shi azaman copolymer.Styrene yana samuwa ne daga amsawar benzene da ethylene, kuma butadiene shine samfurin samar da ethylene.
Styrene-butadiene latex ya bambanta da duka monomers da kuma daga latex na halitta, wanda aka yi daga ruwan itacen Hevea brasiliensis (akai itacen roba).Hakanan ya bambanta da wani fili da aka ƙera, styrene-butadiene roba (SBR), wanda ke raba suna iri ɗaya amma yana ba da nau'ikan kaddarorin daban-daban.
Samfuran Styrene-Butadiene Latex
Styrene-butadiene latex ana kera shi ta hanyar tsarin emulsion na polymer.Wannan ya ƙunshi ƙara monomers zuwa ruwa tare da surfactants, initiators, carboxylic acid da monomers na musamman.Masu farawa suna haifar da polymerization na sarkar da ke haɗuwa da monomer na styrene zuwa monomer na butadiene.Butadiene kanta ita ce ƙungiyar ƙungiyoyin vinyl guda biyu, don haka yana da ikon amsawa tare da wasu raka'o'in monomer guda huɗu.Sakamakon haka, yana iya ƙara haɓakar sarkar polymer amma kuma yana iya haɗa sarkar polymer ɗaya zuwa wani.Wannan ake kira crosslinking, kuma yana da mahimmanci ga sinadarai na styrene-butadiene.Bangaren polymer ɗin da aka haɗe ba ya narke a cikin abubuwan da suka dace amma yana kumbura don samar da matrix mai kama da gel.Yawancin styrene-butadiene polymers na kasuwanci suna da haɗin kai sosai, don haka suna da babban abun ciki na gel, wani abu mai mahimmanci wanda ke da tasiri mai karfi akan aikin latex, yana ba da damar ƙarin ƙarfi, ƙarfi, da elasticity fiye da sauran kayan.A gaba, za mu bincika yadda waɗannan kaddarorin za a iya amfani da su da kyau a cikin masana'antu da aikace-aikace da yawa.
Amfanin Kasuwanci
Styrene-butadiene latex yana ba da fa'idodi da yawa, gami da karɓar filler da ma'auni mai ƙarfi / elongation.Sassaucin wannan copolymer yana ba da damar adadin gaurayawan da ba su da iyaka wanda ke haifar da babban juriya na ruwa da mannewa ga ƙalubalen ƙalubale.Waɗannan halaye na latex na SB suna sa wannan ƙirar ta zama mahimmanci ga rukunin kasuwanni masu haɓaka koyaushe.SB latex formulations ana amfani da su azaman shafi a cikin samfuran takarda, kamar mujallu, filaye da kasida, don cimma babban sheki, ingantaccen bugu, da juriya ga mai da ruwa.Latex na SB yana haɓaka ƙarfin daurin launi kuma, bi da bi, yana sa takarda ta zama santsi, ƙwanƙwasa, haske kuma mafi jure ruwa.A matsayin ƙarin kari, SB latex ba shi da tsada sosai fiye da madadin sutura.SB latex sanannen zaɓi ne don mannewa a wasu masana'antu kamar bene.Misali, ana samun polymer a matsayin murfin baya na yadi kamar kafet ɗin tufa.Rufin baya yana ba da juriya na ruwa kuma yana riƙe tufts a wuri, wanda ya inganta kwanciyar hankali kuma yana rage raguwa a gefen.Waɗannan su ne wasu daga cikin amfanin latex na styrene-butadiene.A haƙiƙa, yana ba da dama mara iyaka, kamar yadda aka tabbatar ta amfanin sa don guje-guje da waƙa, suturar yadi, manne da matsi, da yadudduka marasa saƙa.Styrene butadiene polymer emulsions suma wani mahimmin sashi ne a cikin membranes masu amfani da ruwa, da ƙananan suturar shinge na MVTR don marufi abinci.
Lokacin aikawa: Agusta-10-2022