IHydroxypropylmethylrubicin (HPMC) yimathiriyeli ye-cellulosic, i-pulp okanye umqhaphu enokuthi isetyenziswe ukucokisa intlama yomthi. Ngaphambi kokuba i-alkalization okanye inkqubo ye-alkalization itshatyalaliswe. Umonakalo womatshini unokutshabalalisa i-aggregate ye-aggregate ye-cellulose material yephepha, ngaloo ndlela unciphisa i-polymerization kunye ne-crystallinity, ukwandisa indawo yayo ethile, ngaloo ndlela ukwandisa i-matrix ingaba yi-macromolecular ternary kunye ne-cellulose.
I-Hydroxymethylcellulose isetyenziswa njenge-substrate kwimveliso yeoli. Imodeli yokusetyenziswa inokugqiba ukusetyenziswa kweswekile, iphucule izinga lokusetyenziswa kwezinto, ukunciphisa intsalela ye-substrate kulwelo lokubilisa, kunye nokunciphisa iindleko zokucocwa kwamanzi amdaka. Iimpawu zomxube zilungele ukulungiswa kwe-batch, i-batch-batch kunye neenkqubo eziqhubekayo zokuvutshelwa, ukuphepha ukuguqulwa kwamacandelo aphakathi kunye namazinga okunciphisa, kunye nokuququzelela ukulungiswa kweenkqubo zokuvutshelwa. Ekubeni i-HPMC inomsebenzi ofanayo nezinye ii-ethers ezinyibilikayo emanzini, inokusetyenziswa njenge-ejenti eyenza ifilimu, i-thickener, i-emulsifier kunye ne-stabilizer yepeyinti ye-latex kunye nepeyinti ye-resin enyibilikayo emanzini, kunye nokumelana okugqwesileyo kokunxiba, ukugquma okufanayo kunye nokunamathela. ukuphucula ukunyanzeliswa komphezulu, ukuzinza kwe-asidi-base kunye nokuhambelana ne-pigment yensimbi.
Ukuqulunqwa kwe-hydroxypropylmethylcellulose (HPMC) iphazamisekile, kodwa ngokomgaqo, kodwa ilahleko ye-substrate, isiseko..etherification, ukutshatyalaliswa
Ukubuyisela i-Agent ngokufaka i-centrifugation, ukuhlamba, ukomisa kunye nokuchukumisa indawo nganye ityebile kwizakhono ezisisiseko kunye nolwazi.
Izixhobo ezincedisayo kunye nokulawula ukubukela kuya kunceda ukuqinisekisa umgangatho wemveliso kunye nenkqubo yokuvelisa ethembekileyo. Ichaphazela ubungakanani bamanzi kwi-hypromellose dry-mix mortar's water-retaining water-hydroxypropyl methylcellulose ether mortar ukukhuthaza ukuhanjiswa okuqhubekayo kwe-samente, i-mortar kunye ne-substrate ukwandisa ixesha lokubambelela.
Kukho umphumo oyintloko wokugcinwa kwamanzi, ukugcinwa kwamanzi, ukugcinwa komswakama yi-putty powder, ukunamathela kunye nemisebenzi yokuthambisa. Isetyenziswa kakhulu kushishino lokwakha, ishishini lepeyinti kunye namanye amashishini amaninzi, i-hydroxypropyl methylcellulose ibalulekileukwenziwa kwehydroxypropyl methylcellulose. Ubushushu be-thermal gelation buphezulu kakhulu kune-methylcellulose. I-Lime kunye ne-soda zinempembelelo encinci ekusebenzeni, kodwa inokukhawulezisa ukuchithwa kwe-matrix kunye nokwandisa i-viscosity. Xa i-polyvinyl alcohol, i-ether ye-starch, i-gum yemifuno kunye nepeyinti ye-hydroxypropyl methylcellulose, njl., isisombululo sesitokhwe sesakhiwo esingentla. Xa usebenzisa i-mortar, i-gypsum, i-putty powder okanye ezinye izinto njenge-adhesive, inokuphucula ukusebenza kunye nokwandisa ixesha lokusebenza. Ingasetyenziselwa ukuhlobisa, i-tile yokunamathisela, i-marble, iplastiki kunye nokunciphisa ukusetyenziswa kwe-samente yobuxoki. I-slurry yokugcina amanzi emva kokumisa ayiyi kuphazamiseka ngokukhawuleza, kwaye amandla emva kokunyanga aphuculwe.
Ixesha lokuposa: Dec-20-2022