Umxube ongekho nzulu, odlala indima ephambili ekuphuculeni ukusebenza kwesakhiwo sodaka olomileyo, ubiza ngaphezulu kwe-40% yeendleko zempahla kudaka olomileyo.Uninzi lwee-admixtures kwimarike yasekhaya zibonelelwa ngabavelisi bamazwe angaphandle, kwaye idosi yereferensi yeemveliso nayo inikezelwe ngababoneleli.Iindleko zemveliso yodaka oluxutyiweyo luhlala luphezulu, kwaye kunzima ukuvakalisa i-masonry eqhelekileyo kunye nodaka lokutyabeka ngenani elikhulu kunye noluhlu olubanzi.Iimveliso zentengiso ezikumgangatho ophezulu zilawulwa ziinkampani zangaphandle, kwaye abenzi bodaka oluxutyiweyo oluxutyiweyo banengeniso ephantsi kunye nokufikeleleka kwexabiso eliphantsi;ukusetyenziswa kwe-admixtures kuswele uphando olucwangcisiweyo kunye nolujoliswe kuyo, kwaye lulandela ngokungaboniyo iifomyula zangaphandle.Apha, into esabelana ngayo nawe kukuba, yintoni indima ye-hydroxypropyl methylcellulose kwimixube eqhelekileyo yodaka olomileyo?
IHydroxypropyl methylcellulose luhlobo lweselulosi oluphuma kunye nokusetyenziswa kwayo kuye kwanda ngokukhawuleza kwiminyaka yakutshanje.I-Hydroxypropyl methylcellulose yenziwe ngekotoni esulungekileyo emva konyango lwe-alkalization, isebenzisa i-propylene oxide kunye ne-methyl chloride njengee-etherification agents, i-cellulose e-non-ionic exutywe i-ether eyenziwe ngokulandelelana kweempendulo.Iqondo lokutshintshwa ngokubanzi yi-1.2 ~ 2.0.Iimpawu zayo zihluke ngokuxhomekeke kumlinganiselo we-methoxyl umxholo kunye nomxholo we-hydroxypropyl.Iimpawu ze-hydroxypropyl methylcellulose zezi zilandelayo:
1. IHydroxypropyl methylcellulose inyibilika ngokulula emanzini abandayo, kwaye iya kudibana nobunzima ekunyibilikeni kumanzi ashushu.Kodwa ubushushu bayo be-gelation emanzini ashushu buphezulu kakhulu kune-methyl cellulose.Ukunyibilika kumanzi abandayo kuphuculwe kakhulu xa kuthelekiswa ne-methyl cellulose.
2. I-viscosity ye-hydroxypropyl methylcellulose ihambelana nobunzima bayo be-molecular.Ubukhulu be-molecular weight, buphezulu i-viscosity.Ubushushu buchaphazela i-viscosity yayo, njengoko izinga lokushisa linyuka, i-viscosity iyancipha.Nangona kunjalo, impembelelo ye-viscosity yayo ephezulu kunye nobushushu buphantsi kune-methyl cellulose.Isisombululo sayo sizinzile xa sigcinwe kwiqondo lokushisa.
3. Ukugcinwa kwamanzi kwe-hydroxypropyl methylcellulose kuxhomekeke kwisixa sayo sokongeza, i-viscosity, njl.
4. I-Hydroxypropyl methylcellulose izinzile kwi-asidi kunye ne-alkali, kwaye isisombululo sayo samanzi sizinzileyo kakhulu kwi-pH = 2 ~ 12.I-Caustic soda kunye namanzi ekalika anempembelelo encinci ekusebenzeni kwayo, kodwa i-alkali inokukhawulezisa ukuchithwa kwayo kwaye yandise i-viscosity yayo.I-Hydroxypropyl methylcellulose izinzile kwiityuwa eziqhelekileyo, kodwa xa ukuxinwa kwesisombululo setyuwa kuphezulu, i-viscosity ye-hydroxypropyl methylcellulose isisombululo ivame ukunyuka.
5. I-Hydroxypropyl methylcellulose inokuxutywa kunye neepolymers ezinyibilikayo zamanzi ukwenza isisombululo esifanayo kunye ne-viscosity ephezulu.Okufana ne-polyvinyl alcohol, i-starch ether, i-gum yemifuno, njl.
6. I-Hydroxypropyl methylcellulose inokumelana ne-enzyme engcono kune-methylcellulose, kwaye kungenzeka ukuba ukuchithwa kwe-enzymatic yesisombululo sayo kuphantsi kune-methylcellulose.
7. I-adhesion ye-hydroxypropyl methylcellulose kwisakhiwo sodaka iphezulu kune-methylcellulose.
Ixesha lokuposa: May-09-2023