1. Bokhoni ba hona joale ba tlhahiso ea malapeng le tlhokahalo ea hydroxyethyl cellulose
1.1 Selelekela sa Sehlahisoa
Hydroxyethyl cellulose (e bitsoang hydroxyethyl cellulose) ke selulose ea bohlokoa ea hydroxyalkyl, e ileng ea lokisoa ka katleho ke Hubert ka 1920 hape ke ether e qhibilihang ka metsi e nang le selulose e ngata ea tlhahiso lefatšeng. Ke ena feela e kholo ka ho fetisisa le e tsoelang pele ea bohlokoa ea cellulose ether ka mor'a CMC le HPMC. Hydroxyethyl cellulose ke polima e qhibilihang ka metsing e seng ionic e fumanoang ke letoto la ts'ebetso ea lik'hemik'hale ea k'hothone e hloekisitsoeng (kapa makhasi a lehong). Ke ntho e tiileng e bosoeu, e sa nkheng, e sa latsoeheng kapa ea granular.
1.2 Bokhoni ba tlhahiso ea lefats'e le tlhoko
Hajoale, lik'hamphani tse kholo ka ho fetisisa lefatšeng tsa tlhahiso ea hydroxyethyl cellulose li tsepame linaheng tse ling. Har'a bona, lik'hamphani tse 'maloa tse kang Hercules le Dow United States li na le matla a matla ka ho fetisisa a tlhahiso, li lateloa ke United Kingdom, Japane, Netherlands, Jeremane le Russia. Ho hakanngoa hore matla a lefats'e a tlhahiso ea hydroxyethyl cellulose ka 2013 e tla ba lithane tse 160,000, ka sekhahla sa kholo ea selemo le selemo sa 2.7%.
1.3 Bokhoni ba tlhahiso ea China le tlhoko
Hajoale, matla a tlhahiso ea lipalo tsa malapeng a hydroxyethyl cellulose ke lithane tse 13,000. Ntle le bahlahisi ba 'maloa, ba bang kaofela ke lihlahisoa tse fetotsoeng le tse kopantsoeng, tseo e seng hydroxyethyl cellulose ka kutloisiso ea' nete. Ba shebane haholo le 'maraka oa boemo ba boraro. Domestic pure hydroxyethyl cellulose Tlhahiso ea cellulose ea motheo e ka tlase ho lithane tse 3,000 ka selemo, 'me matla a 'maraka a lehae a teng hona joale ke lithane tse 10,000 ka selemo, tseo ho feta 70% ea tsona li tsoang linaheng tse ling kapa li fanoa ke likhoebo tse tšehetsoang ka lichelete linaheng tse ling. Baetsi ba ka sehloohong ba tsoang linaheng tse ling ke Yakuolong Company, Dow Company, Klein Company, AkzoNobel Company; bahlahisi ba lihlahisoa tsa lehae tsa hydroxyethyl cellulose haholo-holo ba kenyelletsa North Cellulose, Shandong Yinying, Yixing Hongbo, Wuxi Sanyou, Hubei Xiangtai, Yangzhou Zhiwei, joalo-joalo Mmaraka oa lapeng oa hydroxyethyl cellulose o sebelisoa haholo liindastering tsa lik'hemik'hale tsa letsatsi le letsatsi, le ho feta 70% ea 'maraka. kabelo e ts'oaroa ke lihlahisoa tsa kantle ho naha. Karolo ea 'maraka oa masela, resin le enke. Ho na le lekhalo le totobetseng la boleng pakeng tsa lihlahisoa tsa malapeng le tsa kantle ho naha. Mmaraka oa lehae oa maemo a holimo oa hydroxyethyl ha e le hantle o laoloa ke lihlahisoa tsa kantle ho naha, 'me lihlahisoa tsa lehae li hlile li le 'marakeng o bohareng le o tlase. Sebelisa hammoho ho fokotsa kotsi.
Tlhokahalo ea 'maraka oa hydroxyethyl cellulose e thehiloe sebakeng seo, Pearl River Delta (China Boroa) ke ea pele; e lateloe ke Nōka ea Yangtze Delta (Chaena Bochabela); borarong, ka Boroa-bophirimela le Leboa la Chaena; tse 12 tsa morao-rao tsa latex Ntle le Nippon Paint le Zijinhua, tse ntlo-kholo li leng Shanghai, tse ling kaofela li fumaneha sebakeng sa South China. Kabo ea likhoebo tsa letsatsi le letsatsi tsa lik'hemik'hale e boetse e haholo-holo Chaena Boroa le Chaena Bochabela.
Ho latela matla a tlhahiso ea tlase, pente ke indasteri e nang le tšebeliso e kholo ka ho fetisisa ea hydroxyethyl cellulose, e lateloa ke lik'hemik'hale tsa letsatsi le letsatsi, 'me ea boraro, oli le liindasteri tse ling li ja hanyane haholo.
Phepelo le tlhoko ea lehae ea hydroxyethyl cellulose: phepelo e felletseng le tlhokahalo e leka-lekaneng, hydroxyethyl cellulose ea boleng bo holimo e felile hanyane, 'me boemo bo tlase ba boenjiniere ba hydroxyethyl cellulose, petroleum-grade hydroxyethyl cellulose, le hydroxyethyl cellulose Cellulose e fanoa haholo ke likhoebo tsa malapeng. 70% ea 'maraka o felletseng oa hydroxyethyl cellulose oa lapeng o hapiloe ke hydroxyethyl cellulose ea kantle ho naha.
Thepa le tšebeliso ea 2-hydroxyethyl cellulose
2.1 Thepa ea hydroxyethyl cellulose
Lintho tse ka sehloohong tsa hydroxyethyl cellulose ke hore e qhibiliha metsing a batang le metsing a chesang, 'me ha e na thepa ea gelling. E na le mefuta e mengata e fapaneng ea degree ea substitution, solubility le viscosity. pula. Tharollo ea selulose ea Hydroxyethyl e ka etsa filimi e hlakileng, 'me e na le litšobotsi tsa mofuta o seng oa ionic o sa sebelisaneng le li-ion le ho lumellana hantle.
①Mocheso o phahameng le ho qhibiliha ha metsi: Ha ho bapisoa le methyl cellulose (MC), e qhibilihang feela metsing a batang, hydroxyethyl cellulose e ka qhibiliha ka metsing a chesang kapa a batang. Mefuta e mengata e fapaneng ea litšoaneleho tsa solubility le viscosity, le gelation e seng ea mocheso;
②Ho hanyetsa letsoai: Ka lebaka la mofuta oa eona o seng oa ionic, o ka phela hammoho le li-polymers tse ling tse qhibilihang ka metsing, li-surfactants le letsoai ka bongata. Ka hona, ha e bapisoa le ionic carboxymethyl cellulose (CMC), hydroxyethyl cellulose e na le khanyetso e ntle ea letsoai.
③ Ho boloka metsi, ho leka-lekanya, ho etsa filimi: matla a eona a ho boloka metsi a imenne habeli ho feta methyl cellulose, e nang le taolo e ntle ea phallo le ho etsa filimi e ntle haholo, phokotso ea tahlehelo ea mokelikeli, miscibility, thobalano e sireletsang ea colloid.
2.2 Tšebeliso ea hydroxyethyl cellulose
Hydroxyethyl cellulose ke sehlahisoa sa ether se se nang ionic se nang le metsi a selulose, se sebelisoang haholo ka liphahlo tsa meralo, peterole, polymerization ea polymer, meriana, tšebeliso ea letsatsi le letsatsi, pampiri le enke, masela, ceramics, kaho, temo le liindasteri tse ling. E na le mesebetsi ea ho tiisa, ho kopanya, ho emulsifying, ho qhalakanya le ho tsitsisa, 'me e ka boloka metsi, ho etsa filimi le ho fana ka phello e sireletsang ea colloid. E qhibiliha habonolo metsing a batang le metsing a chesang, 'me e ka fana ka tharollo ka mefuta e mengata ea viscosity. E 'ngoe ea li-ether tsa cellulose tse potlakileng.
1) Pente ea latex
Hydroxyethyl cellulose ke setenya se sebelisoang haholo liphahlong tsa latex. Ntle le ho tiisa liphahlo tsa latex, e ka boela ea emulsify, ea qhalakanya, ea tsitsisa le ho boloka metsi. E khetholloa ka phello e tsotehang e teteaneng, nts'etsopele e ntle ea mebala, thepa ea ho etsa filimi le botsitso ba polokelo. Hydroxyethyl cellulose ke ntho e tsoang ho selulose e seng ea ionic e ka sebelisoang maemong a mangata a pH. E na le tumellano e ntle le lisebelisoa tse ling tse ka har'a motsoako (joalo ka li-pigments, li-additives, li-fillers le letsoai). Liaparo tse teteaneng ka hydroxyethyl cellulose li na le rheology e ntle ka litekanyetso tse fapaneng tsa ho kuta 'me ke pseudoplastic. Ho ka sebelisoa mekhoa ea kaho e kang ho hlapa, ho roala lirolara le ho fafatsa. Mohaho o motle, ha ho bonolo ho rotha, ho thella le ho fafatsa, le boemo bo botle.
Nako ea poso: Nov-11-2022