HEC ee saabuunta

HEC Hydroxyethyl cellulose waa suuf jaale ah oo cad ilaa cirro leh ama adag. Aan sun ahayn, dhadhamin. Waa eter cellulose nonionic ah, oo ku milma qabow iyo biyo kulul oo ay ugu wacan tahay hydrophilic hydroxyethyl ee molecule. Xalka aqueous wuxuu leeyahay qiimaha pH ee 6.5 ~ 8.5 wuuna deggan yahay kuleylka. HEC waxay leedahay milmayn kala duwan iyadoo loo eegayo heerka beddelka (DS). Aan lagu milmin badi dareerayaasha organic. Waxay leedahay sifooyinka dhumucda, ganaaxa, dhejiska, emulsification, kala firdhisanaanta iyo haynta qoyaanka, iwm, waxayna diyaarin kartaa xalal kala duwan oo viscosity ah. Waxay leedahay milmayn milix ah oo aan caadi ahayn oo ku habboon dielectric, iyo xalkeeda aqueous waxaa loo oggol yahay inay ku jirto fiirsashada sare ee cusbada oo aan isbeddelin.

Hydroxyethyl cellulose HECwax soo saarka alaabta ceeriin

Alaabta ugu muhiimsan ee ceyriinka: cellulose magaalada (cudbiga suufka ah ama saxarka hoose), alkali dareere ah, ethylene oxide, ethylene diron (40%)

Nidaamka fiber Alkali waa polymer dabiici ah, giraan kasta oo fiber ka kooban yahay saddex kooxood hydroxyl, falcelinta hydroxyl ugu firfircoon si ay u sameeyaan hydroxyethyl cellulose. Ku qooy saxarka suufka ceeriin ama saxarka cuntada ee la safeeyey 30% alkali dareere ah nus saac oo riix. Ku jajabi 1: 2.8 xaaladood oo biyo alkaline ah, ka dibna burburi. Cellulose-ka alkali-ka ah ee la jajabiyey waxaa lagu ridaa kiliga falcelinta, la shaabadeeyey, faaruqiyey, laga buuxiyey nitrogen, oo soo noqnoqda faaruqiyey oo laga buuxiyey nitrogen si loogu beddelo hawada kiiska. Dareeraha ethylene oxide ee horay loo qaboojiyay ayaa lagu riixay jaakada reactor biyo qaboojin ah, falcelinta waxaa lagu xakameynayay qiyaastii 25C ilaa 2h si loo helo badeecada fiilada hydroxyethyl fiber ceeriin. Alaabada cayriin ee aalkolo leh si loo dhaqo, ku dar dhexdhexaadinta acetic acid VLL 46, jean ku dar da'da glioxal crosslinking. Dabadeed ku maydh biyo, fuuqbaxa centrifugal, qalajinta, shiidi, hydroxyethyl cellulose.

1.1 alkali dareere ah

Alaabta saafiga ah waa dareere hufan oo aan midab lahayn. Cufnaanta qaraabada 2. 130, barta dhalaalka 318.4C, barta karkarinta 1390C. Soodhaha caustic ee suuqa ayaa leh xaalad wareeg ah. Iyo dareere laba nooc: saafi ah soodhaha caustic cad cad, jajab, block, granular iyo qaabka usha, cytoplasm: dareere saafi ah caustic soda loo yaqaan dareere alkali, dareere hufan oo aan midab lahayn. Alaabooyinka warshaduhu waxay ka kooban yihiin waxyaabo wasakh ah, gaar ahaan sodium chloride iyo sodium carbonate, iyo mararka qaarkood xaddi yar oo okssaydh bir ah.

1.2 ethylene oxide

Ethylene oxide waa unug dabiici ah, qaacidada kiimikada C2H40, waa kansarka sunta ah. Bakooradda Epoxy waa guban karta oo qaraxday, ma fududa in lagu qaado masaafo dheer, sidaas darteed waxaa jira gobol xooggan. Waxaa si weyn loogu isticmaalaa dhaqidda, daawooyinka, daabacaadda iyo warshadaha rinjiyeynta. 3 oxyethane (E0) waa ether-ka ugu fudud ee giraanta, oo ka tirsan xeryahooda heterocyclic, waa badeecooyin kiimikaad oo muhiim ah. Ethylene oxide waa dareere hufan oo aan midab lahayn oo heerkulkiisu hooseeyo iyo gaas aan midab lahayn oo lugaha ur kulul ku leh heerkulka qolka. Cadaadiska uumiga gaasku wuu sarreeyaa wuxuuna gaari karaa 141kPa at 30C. Cadaadiskan uumiga sare wuxuu go'aamiyaa dhexgalka xooggan ee epoxy z.alkane marka uumiga. Barta dhalaalka (C): -112.2. Cufnaanta qaraabada (biyaha -1): 0.8711

1.3 glyoxal

Jaalle feedho ah ama si aan caadi ahayn u jajaban, oo cadaan u noqonaya qaboojinta.

Hydroxyethyl cellulosewax soo saarka HEChabka

Dhigsuufka suufka ah ama saxarka la safeeyey ee 30% lye. Ka saar oo taabo Ka dib waa la jajabiyaa oo lagu falceliyaa ethylene oxide oo horay loo qaboojiyey si ay u soo saarto cellulose hydroxyethyl cayriin. Dabadeed ku maydh aalkolo oo ku dar acetic acid si aad u dhaqdo ugana takhalusto. Ka dibna ku dar glioxal crosslinking gabowga, dhaqsi biyo ku dhaq. Ugu dambeyntii, ka dib fuuqbaxa centrifugation, qalajinta iyo shiidi, dhammaatayHECalaabta waa la helay.

Habka loo soo saaro dambaska hooseeyaHEChydroxyethyl cellulose by habka dhaqidda joogtada ah waxaa iska leh beerta farsamada ee alaabta. Dhibaatada farsamada ee lagu xallinayo waa in la bixiyo habka dhaqidda joogtada ah oo leh wax soo saar sare oo wax soo saar leh, luminta yar ee dareeraha dhaqidda iyo alaabta iyo kharash yar si loo soo saaro dambas hooseeya.HEChydroxyethyl cellulose. Habka habka dhaqidda joogtada ah si loo soo saaro dambas hooseeyaHEChydroxyethyl cellulose waxaa lagu gartaa talaabooyinkan soo socda: A, hydroxyethyl cellulose ceeriin iyo wakiilka crosslinking isku qasan, iskutallaabta daaweynta si aad u hesho slurry A; B. Ku dar dareeraha wax lagu dhaqo slurry-ka A ee lagu helay tallaabada A si aad u hesho slurry B; C. Ku dar slurry-ga C ee lagu helay tallaabada B dhexda centrifuge cadaadiska wareega oo hel cellulose hydroxyethyl dambas hooseeya ka dib dhaqid joogto ah. Habka ayaa si weyn u wanaajin kara hufnaanta shaqada, si weyn ayuu u wanaajin karaa luminta dareeraha iyo walxaha lagu dhaqo, waxayna si weyn u yaraynaysaa nuxurka dambaska ee alaabta, taas oo u qalanta faafinta iyo codsiga.