I-Teluplose Ether yi-polymer yokwenziwa eyenziwe nge-seluplose yendalo njengento engafunekiyo ngokutshintsha kweekhemikhali. I-Seleulose Ether kukukhupha i-seluplose yendalo, i-seluplose i-ether kunye ne-polymer ye-polymer yahlukile, eyona nto iphambili kuyo i-seluplose, i-polymer yendalo. Ngenxa yesakhiwo sendalo sendalo, i-selupose ge ayinasakhono sokusabela kwiarhente yokuthetha. Kodwa emva kokuphathwa kwearhente yokudumba, iimbophelelo ze-hydrogen eqinileyo phakathi kweemolekyuli kunye nemixokelelwane yeqela le-Hydroxyl yakhutshwa kwi-Arhente ye-Arhente-oH qela kwiqela le-or
Iipropathi ze-Selesese Hailes zixhomekeke kuhlobo, inani kunye nokusasazwa kwezinto ezizimeleyo. Ukwahlula-hlula i-etelulose i-ether ikwasekwe kuhlobo lokuthathelwa kwezinto, isidanga sokuthengiswa, ukonakala kunye nesicelo esinxulumene noko kunokwenziwa. Ngokutsho kohlobo lokuthathela izinto kwi-molecular thein, inokwahlulwa ibe yi-ether enye kunye ne-ether exubeneyo. I-MC ihlala isetyenziswa njenge-ether enye, ngelixa i-HPMC yi-ether exubeneyo. I-Methyl Seler mc MC yiyunithi ye-Gluolose ye-Gluolose ye-Holdroxyl yinkqubo yemveliso ye-HOTMCY i-ERMECMC yinxalenye ye-hyddmc ithathe indawo ye-videoxmc ithathe indawo ye-videoxmc ithathe indawo ye-videoxmc ithathe indawo ye-pplexide ithathe indawo ye-videoxmc ithathe indawo ye-pplexide ithathe indawo ye-videoxmc ithathe indawo ye-pplexide ithathe indawo ye-videoxmc ithathe indawo ye-videoxyl yinxalenye yenkqubo yendlela ye-pplexide ithathe indawo ye-videoxmc ithathe indawo yenkqubo yendlela, enye inxenye ye I-Hydroxypropy ithathe indawo yemveliso ethengisiweyo, ifomula yesakhiwo i [c6h7o2 (oh) i-3-Mn (OCH2] M [OCH2CHYTYL METHY I-HOMC, esetyenziswayo kwaye ithengiswa kwimarike.
Ukusuka kwi-solity kunokwahlulwa kuhlobo lwe-Ionic kunye nohlobo lwe-unic. I-ionic forwec enyibiliki inyibiliki ye-ionsulose ye-ether iqulunqwe ikakhulu ye-alkyl ether kunye ne-hydroxyl alkyl tent to therives ezimbini ezahlukeneyo. I-Ionic CMC isetyenziswa ikakhulu kwi-scorgenty ye-switgents, i-learch, ukushicilela, ukutya kunye nokuxhatshazwa kwepetroleum. I-Ionic MC, i-HPMC, i-HMC kunye nezinye isetyenziselwe ikakhulu kwizinto zokwakha, i-Latex Coyints, amayeza, i-chemistry yemihla ngemihla kunye neminye imiba. Njengearhente yokuthambisa, iarhente yokugcina amanzi, i-stabilizer, isisasazi, iarhente yefilimu.
I-selsulose ether yokugcinwa kwamanzi
Kwimveliso yezinto zokwakha, ngakumbi udaka oluxubeneyo oluxubeneyo, i-Ether Ether idlala indima engenakufikelelwa, ngakumbi kwimveliso yodaka olukhethekileyo (udaka oluguqulweyo), yinxalenye engenakuphiliswa.
The important role of water-soluble cellulose ether in mortar mainly has three aspects, one is excellent water retention ability, the second is the influence of mortar consistency and thixotropy, and the third is the interaction with cement.
I-Seley Sethel Ukugcinwa kwamanzi, kuxhomekeke kwisiseko se-hydroscoficity, ukwakhiwa kodaka, ubumbano lomzimba ubukhulu bexesha, Ukugcinwa kwamanzi kwe-Selersese i-Ether ivela kwi-sloubility kwaye inomzimba weselfowuni. Kuyaziwa ukuba ii-sell sellule sweans, nangona zinenani elikhulu lamaqela ane-hydrady oh, azinanzondo ngamanzi ngenxa yesakhiwo sabo sekristali. Ubuchule bokuhluthwa kwee-hydroxyl zedwa akwanelanga ukuhlawula i-hydrogen ye-hydrogen ye-hydrogen ye-hydrogen kunye ne-van der imikhosi. Xa izinto ezizithobelweyo zingeniswa kwi-molecular thein, hayi kuphela izicelo zitshabalalisa i-hydrogen chain, kodwa kunye ne-hydchin bonds ziphukile ngenxa yomntwa ophantsi phakathi kweendawo ezinqabileyo. Ukukhulula izinto eziphantsi, kokukhona mgama uphambili phakathi kweemolekyuli. Ukutshatyalaliswa kwempazamo ye-hydrogen ye-hydrogen, i-seluplose lattice, isisombululo kwi-etesuse i-ether iba manzi, ukwenziwa kwesisombululo se-viscofity ephezulu. Njengoko iqondo lobushushu liyaphuma, i-hydration ye-polymer iyancipha kwaye amanzi phakathi kwamakhonkco aqhutywa. Xa isiphumo sokuphelelwa ngamandla esanele, iimolekyuli ziqala ukudibanisa kunye nejeli kwinethiwekhi emithathu. Izinto ezichaphazela ukugcinwa kwamanzi kodaka kubandakanywa i-sell ye-ether, idosi, ukulunga kwenkonzo kunye nobushushu benkonzo.
Eyona nto ingaphezulu kwe-viscosity ye-seluplose i-ether, ilunge ngakumbi intsebenzo yokugcina amanzi, ukubonwa kwesisombululo sePolymer. Ubunzima bemolekyuli (isidanga se-polymer) ye-polymer ikwagqitywa kubude kunye ne-morphology yemo yemolekyuli ye-chain, kunye nokusasazwa kwenani leendawo ezichaphazela ngokuthe ngqo. [eta] = km alpha
I-vissin yokufakwa kwezisombululo zepolymer
M ubunzima be-polymer moley
I-polymer ye-Polymer ihlala ihleli
I-Kycosity isisombululo sokusebenza
Uhlobo lwe-viscosity yesisombululo sePolymer ixhomekeke kubunzima bemolekyuli yePolymer. I-viscofity kunye nokugxininiswa kweZisombululo ze-Elesese Selese zihambelana nezicelo ezahlukeneyo. Ke ngoko, i-Selese nganye iseti ineenkcazo ezininzi ezahlukeneyo zokufakelwa, iMigaqo ye-Viscosity ikwaphathwayo kwi-alkali selulose, eyile uqhekezo lwe-pullulose molecular cein yokufezekisa.
Ubungakanani bentsumpa, imbumbulula isuntswana, kungcono ukugcinwa kwamanzi. Amasuntswana amakhulu onxibelelwano lwe-selsulose ekutsaleni ngamanzi, umphezulu onyibilikisi kwaye atyhutyha i-moleks eqhubekayo, i-scound isokola ingachithwanga, i-agglomerate. Ukunyibilisela i-Ether Sether yenye yezinto zokukhetha i-Sell Itery.
Ukutyibilika kunye neThuqiptropy ye-seluplose ether
Iziphumo zesibini ze-selsulose i-ether-i-slickening ixhomekeke: I-Telupese Ether Polymerization, i-Countration, iZinga le-Shear, iqondo lobushushu kunye nezinye iimeko. Ipropathi yokuhluza yesisombululo yahlukile kwi-alkyl selliesse kunye nezahlulo zayo eziguqulweyo. Iimpawu zokuhlaselwa zihambelana nenqanaba lokufaka endaweni, isisombululo kunye nokongezwa. I-Hydroxyl alkyl i-shorivetives, iipropathi zejeli zikwahambelana nenqanaba lendlela yokulungiswa kwe-hydroxyl alkyl. Kwisisombululo sesongelo se-viscofity ye-MC kunye ne-HPMC inokulungiswa nge-10% -15% yesisombululo se-MC kunye ne-HPMMC ilungiselelwe i-5% ye-SCMC kwaye i-HPMC i-SCECME inomgangatho we-Telulose ikhutshiwe nge-1% yesisombululo se-1%. I-pile ye-moleculase i-foller i-ether tickener i-tickener esebenzayo, i-polysmeds efanayo ye-molecros inophawu olwahlukileyo, i-viscosity kunye (η] = 2.905, i-DPN) yenqanaba le-polymerization ephezulu. I-moleculase i-moleculase ye-moleculase i-ersulose yongeza ngaphezulu ukufezekisa i-viscofity ekujoliswe kuyo. U-Viscosity wayo uxhomekeke kakhulu kwinqanaba le-Shear, i-viscofity ephezulu yokufezekisa i-viscofity ekujoliswe kuyo, imali efunekayo yokongeza iphantsi, i-viscosity ixhomekeke ekusebenzeni kakuhle. Ke ngoko, ukufezekisa ukungqinelana okuthile, isixa esithile se-ether sether (uxinaniso lwesisombululo) kunye nesisombululo se-vissosity kufuneka siqinisekiswe. Iqondo lobushushu lesisombululo liye lancitshiswa ngokunyuka koxinzelelo lwesisombululo, kunye nehlaselo lobushushu begumbi emva kokufikelela uxinzelelo oluthile. I-HPMC inoncedo oluphezulu kubushushu begumbi.
Ukungqinelana kungalungiswa ngokukhetha ubungakanani be-paricle kunye neeseli zeselfowuni kunye needigri ezahlukeneyo zokuguqula. I-SO-ebizwa ngokuba kukwaziswa kweqela le-hydroxyl alkyl kwinqanaba elithile lokufaka endaweni ye-Skeleton ye-MC. Ngokutshintsha amaxabiso okufana nabantu ababini, oko kukuthi, i-DS kunye ne-DS kunye neMilinganiso ye-DOSTE YAMAQHINGA AMANQAKU AMANQAKU NAMAQHALASHI. Iipropathi ezahlukeneyo ze-Teluplose Ether iyadingeka ngokutshintsha amaxabiso ezinto zayo ezimbini zezinto ezimbini.
ubudlelwane phakathi kokuguquguquka kunye nokuguqulwa. Kwimifanekiso yesi-5, ukongezwa kwe-ete i-ete ichaphazela ukusetyenziswa kodaka kunye nokutshintsha umyinge wamanzi kunye nesamente, esinefuthe elihlekisayo. Ithagethi ephezulu, ukusela amanzi ngakumbi.
I-Seletulose ees esetyenziswa kwizixhobo zokwakha zepowdery kufuneka inyibilikise ngokukhawuleza emanzini abandayo kwaye ibonelele ngenkqubo yokungaguquguquki ekunene. Ukuba inqanaba le-Shear elinikiweyo lisayintyatyambo kwaye i-colloidal yimveliso engaphantsi okanye imbi esemgangathweni.
Kukho ubudlelwane obulungileyo obulungileyo phakathi kokungqinelana kwesilayidi kunye nomthamo we-iluplose i-ether, i-seluplose Ethen inokunyusa kakhulu i-viscosity, idosi enkulu, ngokucacileyo umphumo.
Isisombululo se-Ethelsise Ethe Atheeus Accomity ye-viscofity ephezulu ine-Thixotropy ephezulu, yenye yeempawu ze-seluplose ether. Aqueous solutions of Mc type polymers usually have pseudoplastic, non-thixotropic fluidity below their gel temperature, but Newtonian flow properties at low shear rates. I-pseudeoplasticimostity inyuka ngokunyuka kobunzima bemolekyuli okanye uxinzelelo lwe-etelulose ether kwaye imele uhlobo oluthathekileyo kunye nesidanga. Ke ngoko, i-seluplose esuka kwibanga le-viscosity efanayo, nokuba i-MC, i-MC, i-HMMC okanye i-HMC, ihlala ibonisa iipropathi ezifanayo ze-rheoc logama lihleli njengokuxinana kunye neqondo lobushushu lihlala lihleli. Xa iqondo lobushushu liyanda, ijeli yesakhiwo izenziwa kwaye iphezulu ye-Thixtropic yenzeka. I-selsulose esuka ngoxinzelelo oluphezulu kunye ne-viscofitity ephantsi i-thyotrop throotropy naphantsi kweqondo lobushushu. Le ndawo yepropathi inesibonelelo esikhulu kulwakhiwo lokwakha lodaka ukuba lihlengahlengise ukuhamba kwalo kunye nokuhambahamba kwepropathi. Kufuneka ichongwe apha ukuba i-viscosity ye-selupelose ithole, kodwa ilunge ngakumbi ukugcinwa kwamanzi, kodwa iphakame i-viscofity ye-fellose ye-ether, ehambelana nefuthe lezoluleko, elinefuthe lokusebenza. Ukuphakama kwe-viscofity, eyona nto icacileyo yokuthambisa kodaka, kodwa ayilulo luhlobo olupheleleyo. Uhlobo oluthile oluphantsi, kodwa i-villase ye-telsuse ekuphuculeni amandla olwakhiwo lodaka olumanzi lusebenza ngakumbi, ngokunyuka kwe-viscofity, ukugcinwa kwamanzi i-selly.
IXESHA LOKUQALA: UMar-30 ukuya kwi-2022