1. Amandla okukhiqiza asekhaya amanje kanye nesidingo se-hydroxyethyl cellulose
1.1 Isingeniso Somkhiqizo
I-Hydroxyethyl cellulose (ebizwa ngokuthi i-hydroxyethyl cellulose) iyi-hydroxyalkyl cellulose ebalulekile, eyalungiswa ngempumelelo ngu-Hubert ngo-1920 futhi iyi-ether ye-cellulose encibilika emanzini enomthamo omkhulu wokukhiqiza emhlabeni. Yilona kuphela elikhulu futhi elikhula ngokushesha i-cellulose ether ebalulekile ngemuva kwe-CMC ne-HPMC. I-Hydroxyethyl cellulose iyi-polymer engancibiliki emanzini engeyona i-ionic etholwe uchungechunge lokucutshungulwa kwamakhemikhali ukotini ocolisisiwe (noma ukhuni). Kuyinto emhlophe, engenaphunga, enganambitheki eyimpuphu noma i-granular eqinile eqinile.
1.2 Amandla okukhiqiza emhlabeni wonke kanye nesidingo
Njengamanje, izinkampani ezinkulu emhlabeni zokukhiqiza i-hydroxyethyl cellulose zigxile emazweni angaphandle. Phakathi kwazo, izinkampani eziningana ezifana ne-Hercules ne-Dow e-United States zinamandla okukhiqiza aqinile, kulandelwa i-United Kingdom, i-Japan, i-Netherlands, i-Germany ne-Russia. Kulinganiselwa ukuthi amandla okukhiqiza emhlabeni wonke we-hydroxyethyl cellulose ngo-2013 azoba amathani ayi-160,000, ngesilinganiso sokukhula konyaka esingu-2.7%.
1.3 Amandla okukhiqiza aseShayina kanye nesidingo
Njengamanje, umthamo wasekhaya wokukhiqiza izibalo we-hydroxyethyl cellulose ungamathani ayi-13,000. Ngaphandle kwabakhiqizi abambalwa, abanye iningi labo bayimikhiqizo elungisiwe futhi ehlanganisiwe, engeyona i-hydroxyethyl cellulose ngomqondo wangempela. Ikakhulukazi ibhekene nemakethe yezinga lesithathu. I-Domestic pure hydroxyethyl cellulose Ukukhishwa kwe-base cellulose kungaphansi kwamathani ayi-3,000 ngonyaka, futhi umthamo wamanje wemakethe yasekhaya ungamathani ayi-10,000 ngonyaka, angaphezu kwama-70% awo angeniswa kwamanye amazwe noma ahlinzekwa amabhizinisi axhaswe ngemali yangaphandle. Abakhiqizi abakhulu bakwamanye amazwe yiYakuolong Company, Dow Company, Klein Company, AkzoNobel Company; abakhiqizi bemikhiqizo yasekhaya ye-hydroxyethyl cellulose ikakhulukazi bahlanganisa i-North Cellulose, i-Shandong Yinying, i-Yixing Hongbo, i-Wuxi Sanyou, i-Hubei Xiangtai, i-Yangzhou Zhiwei, njll. isabelo sihlala imikhiqizo yangaphandle. Ingxenye yezimakethe zendwangu, inhlaka noyinki. Kunegebe elisobala lekhwalithi phakathi kwemikhiqizo yasekhaya neyangaphandle. Imakethe yasekhaya esezingeni eliphezulu ye-hydroxyethyl ngokuyisisekelo ilawulwa yimikhiqizo yangaphandle, futhi imikhiqizo yasekhaya ngokuyisisekelo iphakathi nemakethe esezingeni eliphansi. Sebenzisa ngokuhlangene ukuze unciphise ingozi.
Isidingo semakethe ye-hydroxyethyl cellulose sisekelwe esifundeni, iPearl River Delta (eNingizimu China) ingeyokuqala; kulandele iYangtze River Delta (East China); okwesithathu, iNingizimu-ntshonalanga neNyakatho yeShayina; ama-latex aphezulu ayi-12 Ngaphandle kwe-Nippon Paint ne-Zijinhua, ikomkhulu layo lise-Shanghai, amanye atholakala endaweni eseNingizimu ye-China. Ukusatshalaliswa kwamabhizinisi amakhemikhali nsuku zonke futhi ikakhulukazi eNingizimu China naseMpumalanga China.
Uma sibheka umthamo wokukhiqiza ongezansi, upende yimboni esebenzisa kakhulu i-hydroxyethyl cellulose, elandelwa amakhemikhali ansuku zonke, futhi okwesithathu, uwoyela, nezinye izimboni kudla kancane kakhulu.
Ukunikezwa kwasekhaya kanye nesidingo se-hydroxyethyl cellulose: ibhalansi yokunikezwa kanye nesidingo, ikhwalithi ephezulu ye-hydroxyethyl cellulose iphelile kancane esitokisini, kanye nebanga eliphansi lobunjiniyela bokunamathela i-hydroxyethyl cellulose, i-petroleum-grade hydroxyethyl cellulose, ne-modified hydroxyethyl cellulose Cellulose ihlinzekwa ikakhulukazi amabhizinisi asekhaya. Ama-70% emakethe yasekhaya ye-hydroxyethyl cellulose ithathwa i-hydroxyethyl cellulose yangaphandle.
Izakhiwo kanye nokusetshenziswa kwe-2-hydroxyethyl cellulose
2.1 Izakhiwo ze-hydroxyethyl cellulose
Izakhiwo eziyinhloko ze-hydroxyethyl cellulose ukuthi inyibilika emanzini abandayo namanzi ashisayo, futhi ayinazo izakhiwo ze-gelling. Inezinhlobonhlobo eziningi ze-substitution degree, i-solubility kanye ne-viscosity. imvula. Isixazululo se-Hydroxyethyl cellulose singakha ifilimu esobala, futhi sinezici zohlobo olungezona i-ionic olungasebenzisani nama-ion futhi olunokuhambisana okuhle.
① Izinga lokushisa eliphezulu nokuncibilika kwamanzi: Uma kuqhathaniswa ne-methyl cellulose (MC), encibilika kuphela emanzini abandayo, i-hydroxyethyl cellulose ingancibilika emanzini ashisayo noma emanzini abandayo. Uhlu olubanzi lokuncibilika kanye nezici ze-viscosity, kanye ne-gelation engashisi;
②Ukumelana nosawoti: Ngenxa yohlobo lwayo olungeyona i-ionic, ingahlala namanye ama-polymers ancibilika emanzini, ama-surfactants nosawoti ebangeni elibanzi. Ngakho-ke, uma iqhathaniswa ne-ionic carboxymethyl cellulose (CMC), i-hydroxyethyl cellulose inokumelana nosawoti okungcono.
③Ukugcinwa kwamanzi, ukulinganisa, ukwenza ifilimu: amandla ayo okugcina amanzi aphindwe kabili kune-methyl cellulose, enomthetho omuhle kakhulu wokugeleza nokwenza ifilimu okuhle kakhulu, ukuncipha kokulahlekelwa uketshezi, ukungezwani, ucansi oluvikelayo lwe-colloid.
2.2 Ukusetshenziswa kwe-hydroxyethyl cellulose
I-Hydroxyethyl cellulose ingumkhiqizo we-cellulose we-cellulose we-non-ionic oncibilika emanzini, osetshenziswa kabanzi ekwakhiweni kwezakhiwo, i-petroleum, i-polymerization ye-polymer, imithi, ukusetshenziswa kwansuku zonke, iphepha noyinki, izindwangu, izitsha zobumba, ukwakhiwa, ezolimo kanye nezinye izimboni. Inemisebenzi yokuqina, ukubopha, ukufaka i-emulsifying, ukuhlakazeka nokuzinzisa, futhi ingagcina amanzi, yakha ifilimu futhi inikeze umphumela we-colloid ovikelayo. Incibilika kalula emanzini abandayo nasemanzini ashisayo, futhi inganikeza isisombululo ngezinhlobonhlobo ze-viscosity. Enye ye-cellulose ethers esheshayo.
1) Upende we-latex
I-Hydroxyethyl cellulose iyi-thickener esetshenziswa kakhulu ezimbotsheni ze-latex. Ngaphezu kokuqina kwezingubo ze-latex, ingaphinda ifake, ihlakaze, izinze futhi igcine amanzi. Ibonakala ngomphumela wokuqina okuphawulekayo, ukuthuthukiswa kombala omuhle, indawo yokwenza ifilimu nokuzinza kwesitoreji. I-Hydroxyethyl cellulose iwukuphuma kwe-non-ionic cellulose engasetshenziswa ku-pH ebanzi. Inokuhambisana okuhle nezinye izinto ezisengxenyeni (njengemibala, izithasiselo, izigcwalisi nosawoti). Izingubo ezijiywe nge-hydroxyethyl cellulose zine-rheology enhle ngamanani ahlukahlukene wokugunda futhi ziyi-pseudoplastic. Izindlela zokwakha ezifana nokuxubha, ukumboza nge-roller, nokufutha zingasetshenziswa. Ukwakhiwa okuhle, akulula ukuconsa, ukucwila nokuchaphaza, nokulingana okuhle.
Isikhathi sokuthumela: Nov-11-2022