Focus on Cellulose ethers

Ho boloka metsi a methyl cellulose ether (MC) ke eng?

Ho boloka metsi a methyl cellulose ether (MC) ke eng?

Karabo: Boemo ba ho boloka metsi ke e 'ngoe ea matšoao a bohlokoa ho lekanya boleng ba methyl cellulose ether, haholo-holo mohahong o mosesaane oa seretse se thehiloeng ho samente le sa gypsum.Ho boloka metsi ho ntlafetseng ho ka thibela ka katleho ts'ebetso ea ho lahleheloa ke matla le ho phunyeha ho bakoang ke ho omisa ho feteletseng le ho sa lekaneng ha metsi.Tšebeliso e ntle ea metsi ea methyl cellulose ether tlas'a maemo a mocheso o phahameng ke e 'ngoe ea matšoao a bohlokoa ho khetholla ts'ebetso ea methyl cellulose ether.Tlas'a maemo a tloaelehileng, li-ether tse ngata tse tloaelehileng tsa methyl cellulose li fokotsa ho boloka metsi ha mocheso o ntse o phahama.Ha mocheso o nyolohela ho 40 ° C, ho boloka metsi a tloaelehileng a methyl cellulose ethers ho fokotsehile haholo, e leng ntho ea bohlokoa haholo libakeng tse chesang le tse omileng 'Me mohaho o mosesaane o nang le lera le lenyenyane ka lehlakoreng le chesang lehlabula o tla ba le tšusumetso e tebileng.Leha ho le joalo, ho etsa hore ho be le khaello ea ho boloka metsi ka tekanyo e phahameng ho tla etsa hore ho be le viscosity e phahameng ea thepa ka lebaka la litekanyetso tse phahameng, tse tla baka tšitiso ho haha.

Ho boloka metsi ho bohlokoa haholo ho ntlafatsa ts'ebetso e thata ea litsamaiso tsa gelling tsa diminerale.Tlas'a ketso ea cellulose ether, metsi a lokolloa butle-butle sebakeng sa motheo kapa moeeng ka nako e telele, kahoo ho etsa bonnete ba hore thepa ea samente (samente kapa gypsum) e na le nako e telele e lekaneng ea ho sebelisana le metsi 'me butle-butle e thatafala.

Lintho tsa methyl cellulose ether ke life?

Karabo: Ke karolo e nyane feela ea methyl cellulose ether e kenyelletsoeng, mme ts'ebetso e khethehileng ea seretse sa gypsum e tla ntlafatsoa haholo.

(1) Fetola ho lumellana

Methyl cellulose ether e sebelisoa e le motenya ho lokisa ho tsitsa ha tsamaiso.

(2) Fetola tlhokahalo ea metsi

Tsamaisong ea seretse sa gypsum, tlhokahalo ea metsi ke parameter ea bohlokoa.Tlhokahalo ea motheo ea metsi, le tlhahiso ea seretse e amanang le eona, e itšetlehile ka ho etsoa ha seretse sa gypsum, ke hore, palo ea lejoe la mokoetla, perlite, joalo-joalo.Ho kenyelletsoa ha methyl cellulose ether ho ka fetola ka nepo tlhoko ea metsi le tlhahiso ea seretse sa seretse sa gypsum.

(3) Ho boloka metsi

Ho boloka metsi a methyl cellulose ether, motho a ka fetola nako ea ho bula le mokhoa oa coagulation oa tsamaiso ea seretse sa gypsum, e le ho lokisa nako ea ts'ebetso ea tsamaiso;tse peli tsa methyl cellulose ether butle-butle li ka lokolla metsi ka nako e telele Bokhoni ba ho netefatsa ka katleho tlamahano pakeng tsa sehlahisoa le substrate.

(4) Fetola rheology

Ho eketsoa ha methyl cellulose ether ho ka fetola ka katleho rheology ea sisteme ea gypsum ea plastering, ka hona ho ntlafatsa ts'ebetso ea ts'ebetso: seretse sa gypsum se na le ts'ebetso e ntle, ts'ebetso e ntle ea anti-sag, ha e kopane le lisebelisoa tsa kaho le ts'ebetso e phahameng ea pulping, jj.

U ka khetha ether e loketseng ea methyl cellulose joang?

Karabo: Lihlahisoa tsa methyl cellulose ether li na le litšobotsi tse fapaneng ho ea ka mokhoa oa tsona oa etherification, tekanyo ea etherification, viscosity ea tharollo ea metsi, thepa ea 'mele e kang fineness ea likaroloana, litšobotsi tsa solubility le mekhoa ea ho fetola.Ho fumana phello e ntle ka ho fetisisa ea ts'ebeliso, hoa hlokahala ho khetha mofuta o nepahetseng oa cellulose ether bakeng sa masimo a fapaneng a kopo, 'me mofuta o khethiloeng oa methyl cellulose ether o tlameha ho lumellana le sistimi ea seretse e sebelisitsoeng.

Methyl cellulose ethers e fumaneha ka li-viscosity tse fapaneng ho lumellana le litlhoko tse fapaneng.Methyl cellulose ether e ka phetha karolo feela ka mor'a hore e qhibilihe, 'me tekanyo ea eona ea ho qhibiliha e tlameha ho ikamahanya le tšimo ea kopo le mokhoa oa ho haha.Sehlahisoa sa phofo e ntle se loketse lisebelisoa tsa seretse se omeletseng (joalo ka plaster ea plastering).Likaroloana tse ntle haholo tsa methyl cellulose ether li ka etsa bonnete ba ho qhibiliha ka potlako, e le hore ts'ebetso ea eona e babatsehang e ka etsoa ka katleho ka nako e khutšoanyane ka mor'a ho thehoa ha seretse se metsi.E eketsa botsitso le ho boloka metsi a seretse ka nako e khuts'oane haholo.Tšobotsi ena e loketse ka ho khetheha bakeng sa kaho ea mechine, hobane ka kakaretso, nako ea ho kopanya metsi le seretse se omeletseng se khutšoanyane haholo nakong ea kaho ea mechine.

Tšebeliso ea metsi ea methyl cellulose ether ke eng?

Karabo: Ts'ebetso ea bohlokoa ka ho fetisisa ea limaraka tse fapaneng tsa methyl cellulose ether (MC) ke bokhoni ba bona ba ho boloka metsi lits'ebetsong tsa thepa ea kaho.E le ho fumana ts'ebetso e ntle, hoa hlokahala ho boloka mongobo o lekaneng ka seretse nako e telele.Hobane metsi a sebetsa e le setlolo le se qhibilihisang lipakeng tsa lintho tse sa pheleng, lirekere tse nang le lera le tšesaane li ka etsoa likarete, 'me seretse se polaselitsoeng se ka aloa ka litšepe.Mabota kapa lithaele tse monyang ha li hloke ho kolobisoa pele ka mor'a ho sebelisa seretse se kentsoeng ka cellulose ether.Kahoo MC e ka tlisa liphetho tsa kaho tse potlakileng le tsa moruo.

E le ho beha, lisebelisoa tsa samente tse kang gypsum li hloka ho hydrated ka metsi.Palo e lekaneng ea MC e ka boloka mongobo ka seretse nako e telele e lekaneng, e le hore mokhoa oa ho beha le ho thatafatsa o ka tsoela pele.Palo ea MC e hlokahalang ho fumana matla a lekaneng a ho boloka metsi a ipapisitse le ho monya ha setsi, sebopeho sa seretse, botenya ba seretse, tlhokahalo ea metsi ea seretse, le nako ea ho beha thepa ea samente.

Ha boholo ba karoloana ea MC bo le botle, seretse se teteana ka potlako.


Nako ea poso: Feb-13-2023
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