Eteri ya selulosikubika amazi
Kubika amazi muri mortil bivuga ubushobozi bwa mortil bwo gufata no gufunga amazi. Uko eteri ya cellulose irushaho kuba nini, ni ko amazi arushaho kugumana neza. Kubera ko imiterere ya cellulose irimo hydroxyl na ether bond, itsinda rya hydroxyl na ether bond rya atome za ogisijeni na molekile z'amazi kugira ngo zikore hydrogen bond, bityo amazi afunguye mu mazi afatanye, azunguruka, kugira ngo agire uruhare mu kubika amazi.
Uburyo eteri ya selulose ishonga
1. Eteri ya cellulose ikomeye yoroshye gukwirakwira mu mazi idateranyije, ariko igipimo cyo gushonga kiragenda buhoro cyane. Eteri ya cellulose iri munsi ya mesh 60 ishongeshwa mu mazi mu gihe cy'iminota 60.
2. Uduce duto twa eteri ya selulosi mu mazi biroroshye gukwirakwira kandi ntibiterana, kandi igipimo cyo gushonga ni gito. Eteri ya selulosi irenga meshi 80 ishongeshejwe mu mazi mu gihe cy'iminota 3.
3. Eteri ya cellulose nziza cyane ikwirakwira vuba mu mazi, ishonga vuba kandi igakora ubushyuhe bwihuse. Eteri ya cellulose iri hejuru ya mesh 120 ishonga mu mazi mu gihe cy'amasegonda agera kuri 10-30.
Uko utunyangingo twa eteri ya selulosi tuba twitonze, ni ko amazi agumana neza, uduce duto twa eteri ya selulosi n'ubuso bw'amazi bihita bishonga kandi bigatera gel. Kole ipfunyika ibikoresho kugira ngo ibuze molekile z'amazi gukomeza kwinjira. Hari igihe, nubwo waba wabyutswe igihe kirekire, umuti ntushobora gukwirakwira no gushonga kimwe, bigatuma habaho umuti urimo urubura cyangwa agglomerate. Utunyangingo duto duhita dushonga ako kanya iyo tugeze ku mazi kugira ngo habeho viscosity imwe.
Agaciro ka PH ka eteri ya selulosi (gutinda gufungana cyangwa imbaraga za mbere)
Agaciro ka PH k’inganda zikora eteri za cellulose mu gihugu no mu mahanga gagenzurwa hafi kuri 7, ari byo bitera aside. Kubera ko hakiri imiterere myinshi y’impeta ya glucose yabuze amazi mu miterere ya eteri ya cellulose, impeta ya glucose yabuze amazi ni yo itsinda nyamukuru ritera gutinda kwa sima. Impeta ya glucose yabuze amazi ishobora gukora iyoni za calcium mu gisubizo cyo gukamura isukari igizwe n’ibinyabutabire bya calcium, ikagabanya ubwinshi bwa iyoni za calcium mu gihe cyo gukamura sima, ikabuza iremwa n’imvura ya calcium hydroxide na calcium salt crystals, bityo ikadindiza inzira yo gukamura sima. Iyo agaciro ka PH kabaye alkaline, mortilage izagaragara nk’iy’imbaraga kare. Ubu inganda nyinshi zikoresha sodium carbonate, sodium carbonate ni ubwoko bw’umuti wihutisha, sodium carbonate ishobora kunoza imikorere y’ubuso bw’uduce twa sima, bigatuma guhuza hagati y’uduce kwiyongera, ikongera ubushobozi bwo gukamura ururenda, mortilage na sodium carbonate na calcium ion compound vuba, bigatuma ettringite iremwa, sima ihunduka vuba. Kubwibyo, agaciro ka PH kagomba guhindurwa hakurikijwe abakiriya batandukanye mu gikorwa nyacyo cyo kuyikora.
Induction ya eteri ya selulosi
Ubushobozi bwo guhumeka umwuka wa eteri ya selulosi ahanini buterwa nuko eteri ya selulosi nayo ari surfactant, imikorere ya eteri ya selulosi igaragara cyane cyane mu gice cy’umwuka-amazi-gito, icya mbere ni ukwinjizwa kw’udupira, hagakurikiraho gukwirakwira no kuvoma. Eteri ya selulosi igizwe n’itsinda rya alkyl, igabanya cyane imbaraga zo gukurura ubuso n’ingufu zo hagati y’amazi, umuti w’amazi mu gihe cyo gukurura biroroshye gukora udupira twinshi duto dufunze.
Guhindura eteri ya selulose
Eteri ya selulosi ishongeshejwe muri mortilage bitewe n'uruhererekane rwa molekile rwa methoxy na hydroxypropyl mu ruhererekane rw'iyoni za kalisiyumu na iyoni za aluminiyumu mu ikorwa rya gel ifite viscous kandi yujujwemo icyuho cya mortilage ya sima, yongera ubucucike bwa mortilage, igira uruhare mu kuzuza no gukomeza ibintu. Ariko, iyo matrix ya composite ikandagiwe, polymer ntishobora gukora nk'inkunga ikomeye, bityo igipimo cy'imbaraga n'ubucucike bwa mortilage kiragabanuka.
Gukora filime yaeteri ya selulose
Nyuma yo gutonyanga, hakorwa agace gato ka latex hagati ya eteri ya cellulose na sima. Agace kayo gafite ubushobozi bwo gufunga kandi kagatuma isukari yumuka neza. Kubera ko eteri ya cellulose ifata amazi neza, igumana amazi ahagije imbere muri sima, bityo igakomeza imbaraga za sima no gukomera no gukura neza, yongera imbaraga zo gufatana kwa sima, icyarimwe yongera ubushobozi bwo gufatana kwa sima, sima ifite plastike nziza kandi ikomeye, igagabanya guhindagurika kwa sima.
Igihe cyo kohereza: 26 Mata 2024