Ukulungiswa kunye nokusetyenziswa kwe-hydroxypropyl methyl seluplose

I-HydroxyPOpyl Methyl Selelise I-Hydroxypropy yeQela kunye neQela le-Methyl yi-Ether Bond kunye neSeluplose AnhyDral Glucose Glucose GluCose GLUCE, yi-Ionic Setelise exube i-ether. Yinto esebenzayo, engasebenziyo, i-viclaestic polymer isetyenziswa kwi-ophthalmology njengeoyile okanye njengomculo okanye unomdla kumachiza omlomo

Ukulungiswa kwe
Iphepha le-Kraft Pulp enomxholo we-α-selsulose ye-97%, i-viscosic ye-720ml / g kunye ne-APT Fible Fible i-49% ye-naod kwi-40 ℃ imizuzwana engama-40. Ipulp yesiphumo ikhutshiwe ukuze isuse ngaphezulu kwe-49% ye-nahh iscound ukufumana isisombululo se-alkali sellulose. Umyinge wobunzima be (49% UNOH emanzini) ukuya (icandelo eliqinileyo kwi-pulp) kwinyathelo lokungena. The alkali cellulose (20kg) thus obtained was placed in a jacketed pressure reactor with internal agitation and then vacuumed and purged with nitrogen gas to adequately remove oxygen from the reactor. Emva koko, iqondo lobushushu kwi-rector lalawulwa ngo-60 ℃, ngelixa isivuno sangaphakathi saqhutywa. Emva koko, i-2.4kg ye-Dimethyl-I-DEETHERO yenziwe kwaye iqondo lobushushu kwi-proclotor lalilawulwa ukuba liyi-DIMUTHINE) (i-methylene pheride) yongezwa ukwenza umlinganiselo wobunzima (proplene oxide) I-Pulp) 1.97, kwaye iqondo lobushushu kwi-Reactor lalawulwa ukusuka kwi-60 ° C ukuya kwi-80 ° C. Emva kongezwa kwe-chlormethane kunye ne-propylene oxide, iqondo lobushushu kwindawo ye-80 ℃ ukuya kwi-90 ℃ ukuya kwi-90 ℃. Ukongeza, impendulo yagqitywa i-9 ° C kangangemizuzu engama-20. Emva koko, irhasi ikhutshiwe kwi-rector, kwaye i-chydropyll ye-thydyl ye-methyl selliese isuswe kwi-recy. Iqondo lobushushu le-chydroxypropyl methylcelceluplose yayingu-62 ℃ Xa isusiwe. Ukulinganisa ubungakanani be-50% ye-paulaticle kubungakanani be-sumulative bubukhulu bokusasazwa kobungakanani obuchazwe ngokusekwe kumyinge we-chydropyl ye-chydylcellul idlulayo kwizikrini ezintlanu, nganye enesayizi yokuvula eyahlukeneyo. Ngenxa yoko, ubungakanani obuqhelekileyo bamanqaku ngamasuntswana arhabaxa yi-6.2mm. I-chadroxypropyl ye-HydropylCopyl Methylcelcelsulose yaziswa kwi-biiaxial ye-biixial (krc igonsi) kwisantya se-100rpm) ngesantya esihle kakhulu Njengoko kulinganiswa ngokufanayo kusetyenziswa izikrini ezintlanu ngeesayizi zokuvula ezahlukeneyo, ubungakanani be-ovareji ye-1.4mm. Isilayidi sifunyenwe ngokwamanzi ashushu nge-80 ° C kwi-HydroxyPyl ye-Hydroxylcellupyl kwitanki ngolawulo lwe-jathylcelcel mehylcelose kwi-charylcellultulose) kwi I-0.1. Isilayidi sifudolwa kwiqondo lokushisa elihlala lingama-80 ° C kangangemizuzu engama-60. Emva koko, i-slickry inikezelwa kwi-filter yoxinzelelo lokujikeleza Iqondo lobushushu lesilayidi yayingu-93 ℃. Isilayidi sinikezelwa yimpompo ngoxinzelelo lwe-0.2mpa. Ubungakanani bokuvula kwecebo loxinzelelo lokujikeleza luyi-80μ, kunye nendawo enemililo yi-0.12m2. Isilayidi esinikezelwe kwi-filter yoxinzelelo ejikelezayo siyacocwa ngecebo lokucoca ulwelo kwaye liguqulwe ibe yikhekhe lokucoca. Ikeyiki ekhuphileyo layondliwa ngumthi we-0.3MPA kunye namanzi ashushu nge-95 ° C ukuya kwi-105 ° C ukuya kumyinge we-10,0 ukuya kwicandelo eliqinileyo lokuhlanjwa kwe-hitylcelsele kwaye ihlatywe ngesihluzi. Amanzi ashushu anikezelwa yimpompo ngoxinzelelo lwe-0.2MPA. Emva kokuba amanzi ashushu anikezelwa, i-0.3MPA ye-Steam inikezelwa. Imveliso ehlanjwe kumphezulu wecebo lokucoca isuswe emva koko isuswe ngokungxama kwaye ikhutshiwe ngaphandle kwe-washer. Amanyathelo aqhubekayo ukusuka ekuboneleleni ngokutyibilika ekuphumeni kwemveliso ehlanjiweyo. Umxholo wamanzi wemveliso ehlanjiweyo yayingama-52.8% njengoko ilinganiswa nge-heating hygrometer. Iimveliso ezihlanjwe zikhutshiwe kwi-filter yoxinzelelo ejikelezayo yomiswe zisebenzisa i-80 ° C kwaye iqhekezwe kwimpembelelo ye-Gomecyropyl Methylceluplose.

isicelo
Le mveliso isetyenziswa njengearhente yokuthambisa, ukusasazeka, i-binder, i-emulsifier kunye ne-stabilimizi kwishishini lendwangu. Kukwasetyenziswa ngokubanzi kwi-resin ye-resin, i-petrochemical, i-ceramic, iphepha, isikhumba, iyeza, ukutya, amayeza kunye namanye amashishini.