Ubume bophuhliso lweteknoloji yemveliso ye-HPMC kunye nenkqubo ye-hydroxypropyl methyl cellulose e-China

Ubume bophuhliso lweteknoloji yemveliso ye-HPMC kunye nenkqubo ye-hydroxypropyl methyl cellulose e-China

IHydroxypropyl methyl cellulose HPMCkwimveliso yangoku yasekhaya inikwa kuqala kunye nesigaba solwelo indlela iteknoloji, le teknoloji imelwe wuxi loshishino lwekhemikhali yophando kunye neziko loyilo kwiyunithi yophando yaseTshayina ngeminyaka yee-1970, impumelelo yophando ngesiseko sokukhuthaza, imvelaphi yigesi. isigaba indlela etherification reaction, ngenxa yokuba izixhobo azihambelani nelizwe lethu, ngoko wasebenza indlela yolwelo indlela etherification reaction, Ukuza kuthi ga ngoku ulwelo umlinganiselo ulwelo etherification reaction inkqubo indlela yokusabela kuseyinkqubo engundoqo imveliso ethile eyaziwayo abenzi becellulose ether. .

Imveliso yasekhaya hydroxypropyl methyl cellulose HPMC ngokubanzi isebenzisa umqhaphu esulungekisiweyo njengezinto ekrwada (abanye abavelisi nabo baqala ukuzama ukusebenzisa umthi womthi), kunye negrinder yasekhaya yokusila okanye ukusebenzisa ngokuthe ngqo umqhaphu osulungekileyo alkalization, etherification usebenzisa i-binary mixed organic solvent, reaction in the reactor vertical.Inkqubo yokucoca isebenzisa inkqubo ephazamisayo apho i-solvent ye-organic isuswa kwi-reactor kwaye imveliso engcolileyo ihlanjululwa ngeendlela ezininzi zokuhlambela kunye nokukhutshwa kwamanzi ngokusebenzisa i-scrubbers kunye ne-centrifuges.Ukulungiswa kwemveliso egqityiweyo kunye negranulation ephakathi, phantsi kwemeko yokufudumeza (kukwakho umenzi ngaphandle kwegranulation), ukomisa kunye nokutyumza ngendlela eqhelekileyo, ininzi yokulungiswa okukhethekileyo kukulibaziseka kwexesha lokuchithwa kwemveliso (ukunyibilika ngokukhawuleza) ukuqhutyelwa ngaphandle kokuthintela kunye nokusabalalisa , ukupakishwa sebenzisa indlela yezandla.

Indlela yesigaba solwelo inezi nzuzo zilandelayo: inkqubo yokusabela isixhobo soxinzelelo lwangaphakathi luncinci, iimfuno zoxinzelelo lwezixhobo ziphantsi, umngcipheko omncinci;Emva kokukhulelwa kwi-lye, i-cellulose inokwandiswa ngokupheleleyo kwaye i-alkalize ngokulinganayo.I-Lye ine-infiltration engcono kunye nokuvuvukala kwe-cellulose.I-reactor ye-etherification incinci, idibene nokudumba okufanayo kwe-alkali cellulose, ngoko umgangatho wemveliso kulula ukulawula, idigri yokutshintshwa kunye ne-viscosity inokufumaneka iimveliso ezifanayo, iintlobo zikwalula ukubuyisela.

Nangona kunjalo, le nkqubo nayo ineziphene ezilandelayo: i-reactor ayidlanga kakhulu, ukulinganiselwa kwamanani kukhokelela kumthamo omncinci wokuvelisa, ukwenzela ukuba kuphuculwe imveliso, kuyimfuneko ukwandisa inani le-reactors;Iimveliso ezikrwada ezisulungekisiweyo nezicocwe zifuna izixhobo ezingaphezulu, ukusebenza okuntsonkothileyo, ukuqina kwabasebenzi;Ngenxa yokuba akukho-anti-mildew kunye nonyango oluxutywe, okubangela ukuzinza kwe-viscosity yemveliso kunye neendleko zemveliso zichaphazelekayo;Ukupakishwa ngendlela yezandla, ukuqina kwabasebenzi, iindleko eziphezulu zabasebenzi;I-automation degree of reaction control ingaphantsi kunenkqubo yesigaba segesi, ngoko ke ukuchaneka kokulawula kuphantsi.Xa kuthelekiswa nenkqubo yesigaba segesi, iinkqubo ezinzima zokubuyisela i-solvent ziyafuneka.

Ngophuculo lweteknoloji yokuvelisa i-hydroxypropyl methyl cellulose ye-HPMC, amanye amashishini ngokuqhubeka ngokutsha okuzimeleyo, indlela yesigaba solwelo lweketile enkulu iye yaphuhliswa ngokutsiba kunye neendlela, kwaye ineempawu zayo zobugcisa.Anxin chemistry isebenzisa inkqubo yokuvelisa HPMC yoqobo, hayi kuphela inkqubo yemveliso efanelekileyo, iparameters ulawulo yokusebenza ichanekile kwaye ithembekile, ukusetyenziswa ngokupheleleyo kunye nengqiqo izinto ekrwada kunye nezinye iimpawu, kunye nesidanga endaweni imveliso iyunifomu, impendulo ngokupheleleyo. ngokucokisekileyo, ukucaca kwesisombululo kulungile, kwaye kwangaxeshanye ukuqinisekisa ukuzinza komgangatho wemveliso.Umgca wemveliso we-HPMC wamashishini athile utshintshiselwano oluzenzekelayo, ukuphumeza iimfuno zolawulo oluzenzekelayo lwe-DCS yesixhobo, izixhobo ezibandakanya ulwelo, izinto eziqinileyo ekrwada zingasetyenziselwa ukulinganisa ngokuchanekileyo kunye nokongeza inkqubo ye-DCS, ubushushu kunye nolawulo loxinzelelo kwinkqubo yokusabela zonke ziqondane ne-DCS. ulawulo oluzenzekelayo kunye nokubeka iliso kude, Ngokumalunga nokuba nokwenzeka, ukuthembeka, uzinzo kunye nokhuseleko lwemveliso, kuphuculwe ngokucacileyo xa kuthelekiswa nemowudi yemveli yemveliso, engagcini nje ukusindisa abasebenzi, inciphisa amandla omsebenzi, kodwa iphucula indawo yokusebenza kwisayithi.