Iyini isilinganiso se-HPMC Hydroxypropyl methyl cellulose kanye nesamente?
Udaka lokuvikela ubunjiniyela olungangeni manzi, izici zalo zincike esisindweni esilandelayo sezinto zokusetshenziswa ezenziwe: Ukhonkolo 30-340, ufulawa wezitini zokwakhiwa kobunjiniyela 40-50, i-lignin fiber 20-24, i-calcium formate 4-6, i-hydroxypropyl methyl cellulose 7-9, i-silicon carbide powder 40-45, i-calcium hydroxide powder 10-20, i-brown corundum powder 10-12, i-dry big city silt powder 30-35, i-Datong city soil 40-45, i-aluminium sulfate 4-6, i-carboxymethyl Base starch 20-24, izinto eziguquliwe i-nanotechnology carbon powder 4-6, amanzi 600-650; Udaka lokuvikela ubunjiniyela olungangeni manzi lwalo mkhiqizo lunokuvikela ukushisa okuqinile, ukumelana nomlilo okuhle, ukubopha okuqinile nodonga, amandla okucindezela, ukusebenza kahle kokudonsa, ukumelana nokuguga okuhle, ukuvikelwa okuhle kwemvelo, ukumelana nomswakama okuhle kakhulu, ukumelana nokuqhekeka, ukuvimbela ukuwa phansi. Namuhla sizokhuluma nge-viscosity yesisombululo samanzi se-hydroxypropyl methyl cellulose, konke lokhu kuncike kuziphi izici? Ake sifunde ngempela.
1. Isisindo sama-molecule esihlobene, izinga lokushisa lesisombululo samanzi, izinga lokusika kanye nendlela yokuhlola ye-cellulose ether; 2. Uma izinga lokushisa lokushintsha kwengilazi liphakeme, isisindo sama-molecule esihlobene sikhulu, i-viscosity yesisombululo iphakeme ngokwemvelo; 3. Uma okuqukethwe kwe-cellulose ether kuphakeme, i-viscosity yesisombululo iphakeme, ngakho-ke ekusetshenzisweni kwesicelo kufanele sinake inani elifanele lokufakwa, sivimbele ukufakwa kuphezulu kakhulu, futhi sithinte ngqo izici ze-samente mortar kanye ne-samente concrete; 4. Njengeningi lesisombululo, i-viscosity izoncipha futhi ngokukhuphuka kwezinga lokushisa, kanye nokuqukethwe kwe-cellulose ether okuphezulu, kulapho izinga lokushisa liba likhulu khona; Ngaphezu kwalokho, umphumela wangempela wokujiya nawo uyahlukahluka ngokuya ngenani lamanzi asetshenziselwa i-epoxy cement.
I-Hydroxypropyl methyl cellulose aqueous solution viscosity nayo ingasebenza njengesixhumanisi esibalulekile sokuphawula ngezici ze-cellulose ether, uma i-viscosity yesisombululo samanzi iphakeme, izinto zayo zesimende ze-epoxy ezijiyile zingcono, ngemuva kwezakhiwo ze-gelling zepuleti, kodwa uma i-viscosity inkulu kakhulu, izolimaza i-epoxy cement eluhlaza ngokushesha futhi iyasebenza. Ngokuqondene nodaka oluzilinganisayo olunoketshezi oluphezulu, i-viscosity ye-cellulose ether izocaciswa ukuthi iphansi.
Isixazululo samanzi se-cellulose ether siwumzimba ongeyona ipulasitiki, esigabeni sakamuva sokutholwa kwesilinganiso sokucheba sisikhulu, i-viscosity incane.
Ngakho-ke, ukufingqa yilokhu: ukuhlangana kodaka lukasimende kuzoncishiswa ngamandla angaphandle, okuzuzisa ukwakhiwa kobunjiniyela ngemuva, kodwa isixazululo samanzi se-cellulose ether uma kunenani eliphansi kakhulu lokuhlushwa, kuzovela izici zoketshezi olungeyona i-Newtonian, ngokuphambene nalokho, lapho inani lokuhlushwa lenyuswa, isixazululo samanzi sizovela izici zoketshezi lwe-pseudoplastic.
Ukugcinwa kwamanzi kusuka ku-hydroxypropyl methyl cellulose kungenye yezimpawu ezibalulekile ze-hydroxypropyl methyl cellulose. Izinga lokuhwamuka kokuqukethwe kwamanzi emikhiqizweni exubile eyenziwe ngodaka kanye ne-plaster lithintwa izinga lokushisa legesi, izinga lokushisa kanye nengcindezi. Ngakho-ke, ezinkathini ezahlukene, kanye ne-hydroxypropyl methyl cellulose inani elifanayo lokusebenza kahle kwamanzi komkhiqizo linomehluko othile.
Ngokuvamile, uma i-viscosity ye-hydroxypropyl methyl cellulose iphakeme, umphumela wangempela wokugcinwa kwamanzi uzoba ngcono, kodwa umonakalo we-viscosity ekugcinweni kwamanzi uzoncishiswa ngemva kokuba i-viscosity idlule i-100,000 Mpa. s. Lapho i-viscosity ye-HYDROXYpropyl methyl cellulose idlula i-100,000, izinga lokugcinwa kwamanzi lingathuthukiswa kakhulu ngokwandisa inani le-hydroxypropyl methyl cellulose.
Enqubweni yokwakha eningiliziwe, umphumela wokugcina amanzi e-slurry ungalungiswa ngokulungisa inani le-hydroxypropyl methyl cellulose. Imikhiqizo yochungechunge lwe-hydroxypropyl methyl cellulose ingaxazulula ngempumelelo inkinga yokugcina amanzi ngaphansi kokushisa okuphezulu okuqhubekayo. Esikhathini sokushisa okuphezulu okuqhubekayo, ikakhulukazi ezindaweni ezishisayo nezinesithukuthezi kanye nokwakhiwa kwe-chromatography ohlangothini olunelanga, i-HYDROXYpropyl methyl cellulose esezingeni eliphezulu iyadingeka ukuthuthukisa ukugcina amanzi e-slurry.
Ikhwalithi ephezulu ye-hydroxypropyl methyl cellulose, inokulinganisela okuhle, amaqembu ayo asebenzayo e-butyl tertiary kanye ne-hydroxypropyl oxygen ahambisana nokusatshalaliswa kwe-fiber molecular chain structure, ingathuthukisa iqembu le-methyl aldehyde kanye ne-oxygen, futhi ikhwalithi yamanzi yefomu ledijithali ye-covalent bonds ingaba amanzi aboshwe kanye namanzi okusabalala, bese ilawula ngempumelelo isimo sezulu esishisayo esibangelwa ukuhwamuka kwamanzi, ukugcinwa kwamanzi amaningi.
Ikhwalithi ephezulu ye-hydroxypropyl methyl cellulose ingangena ezweni elikhululekile nelithengiswayo emikhiqizweni exubile yodaka kanye ne-plaster, futhi zonke izinhlayiya eziqinile zi-cyst, zimanzi, zipholile, futhi zakha ungqimba lwefilimu, umswakama ophakathi nendawo isikhathi eside ukhulula kancane kancane kusuka esisekelweni, ngokuqala kokuhlanganiswa kwe-organic compound yokusabela kokumanzisa, bese kuqinisekiswa ukuhambisana kwamandla okucindezela nezinto zokusetshenziswa kanye namandla okudonsa. Ngakho-ke, enkambisweni yokwakha yasehlobo eqhubekayo yokushisa okuphezulu, ukuze kufinyelelwe umphumela wamanzi, kufanele kuhambisane neresiphi yenani elithile kanye nekhwalithi yemikhiqizo ye-hydroxypropyl methyl cellulose, kungenjalo, kuzobonisa ukukhathala okusheshayo kakhulu futhi kubangele ukumanzisa okunganele, kunciphise amandla okucindezela, kuhlukaniswe, kufakwe izimfanelo ezifana ne-metope engenalutho kanye nokungabaza, futhi kuhlanganiswe ne-coefficient yobunzima bokwakha abasebenzi. Njengoba izinga lokushisa lehla, inani le-hydroxypropyl methyl cellulose lingancishiswa kancane kancane futhi umphumela ofanayo wokugcina amanzi ungatholakala.
Uma i-cellulose ether ingafakwanga, i-chromatography ye-samente entsha izokoma ngokushesha, okwenza i-concrete ingabi namanzi ngendlela evamile, okuholela ekutheni i-samente ether ingaqini futhi ithole ukunamathela okungcono. Ngesikhathi esifanayo, ukwengezwa kwe-cellulose ether kwenza i-samente mortar ibe ne-ductility enhle kanye nokuguquguquka, futhi kuthuthukisa amandla okubopha e-samente mortar.
1, usayizi wezinhlayiya ze-hydroxypropyl methyl cellulose
Usayizi wezinhlayiya ze-cellulose ether ulimaza ukuncibilika kwayo. Uma i-cellulose ether incane, izinga lokubola kwayo emanzini lishesha futhi izici zayo zokugcina amanzi ziphakeme. Ngakho-ke, usayizi wezinhlayiya ze-cellulose ether kufanele ufakwe ekuphenyweni kwesinye sezici zayo. Ngokuvamile, usayizi wezinhlayiya ze-cellulose ether ungama-mesh angu-80 ngokusekelwe.
2, i-hydroxypropyl methyl cellulose eyomile ngaphandle kwesilinganiso samandla adonsela phansi
I-manic eyomile ayinaso isilinganiso samandla adonsela phansi, ibhekisela ekushiseni okuthile kwe-manic cellulose ether eyomile, ukulahlekelwa kwekhwalithi yamakhemikhali kwabangela amaphesenti okuqala ekhwalithi yesampula yokwakheka. Ukuze ikhwalithi ethile ye-cellulose ether eyomile ngaphandle kwesilinganiso samandla adonsela phansi iphezulu kakhulu, izonciphisa izingxenye ezifanele ku-cellulose ether, ilimaze umphumela wangempela wokusetshenziswa kwezinkampani ezingezansi, kodwa futhi ithuthukise izindleko zokuthenga. Ngokuvamile i-ether eyomile ngaphandle kwesilinganiso samandla adonsela phansi akufanele idlule u-5.0%.
3, umlotha we-hydroxypropyl methyl cellulose potassium thiocyanate
Ukuze uthole ikhwalithi ethile ye-cellulose ether ekuqukethwe komlotha kuphakeme kakhulu, kuzonciphisa i-cellulose ether ezingxenyeni ezifanele, kulimaze umphumela wangempela wokusetshenziswa kwezinkampani ezisezansi, okuqukethwe komlotha we-potassium thiocyanate kuyisici esiyinhloko esicatshangelwayo sezinga layo lenkomba yezimpawu.
4, i-hydroxypropyl methyl cellulose viscosity
Ukugcinwa kwamanzi kwe-hydroxypropyl methyl cellulose kanye nomphumela wokujiya kuyisihluthulelo sokwengeza i-cement mortar cellulose ether ekuqineni nasekuhlanganisweni kwayo.
5, inani le-PH le-hydroxypropyl methyl cellulose
I-viscosity yemikhiqizo ye-hydroxypropyl methyl cellulose iyancipha kancane kancane ekushiseni okuphezulu noma ngemva kokugcinwa isikhathi eside, ikakhulukazi emikhiqizweni ye-viscosity ephezulu, ngakho-ke inani le-pH kumele lilinganiselwe. Ngokuvamile kushiwo ukuthi isigaba senani le-PH se-cellulose ether kufanele sisebenze njengo-5-9.
6. Ukudluliswa kwe-hydroxypropyl methyl cellulose
Izinzuzo kanye nokungalungi kokudluliselwa kwe-hydroxypropyl methyl cellulose kungathinta ngqo umphumela wangempela wokusetshenziswa kwayo ezintweni zokwakha. Izici eziyinhloko ezilimaza ukudluliselwa kwe-cellulose ether yilezi
1) ikhwalithi yezinto zokusetshenziswa; (2) umphumela wangempela wokukhipha i-ashi; (3) Ukulungiswa kobuchwepheshe bokucubungula; (4) ukulungiswa kwe-organic solvent; (5) Umphumela wangempela we-zhonghe.
Ngokusho komphumela wangempela wokusetshenziswa, ukudluliselwa kwe-cellulose ether akufanele kube ngaphansi kuka-80%.
7, izinga lokushisa elisolwayo le-hydroxypropyl methyl cellulose
I-Hydroxypropyl methyl celluloseezingxenyeni zesimende njengesihluthulelo sokwandisa izinamathiseli, i-viscosity kanye ne-ejenti yokugcina amanzi, ngakho-ke i-viscosity kanye nokushisa kwejeli kuyinani eliyinhloko le-hydroxypropyl methyl cellulose. Izinga lokushisa lisetshenziselwa ukwahlulela uhlobo kanye nokucaciswa kwe-cellulose ether, futhi izinga lokufakwa esikhundleni kwe-cellulose ether lihlobene.
8. Ngaphezu kwalokho, usawoti kanye nezinsalela kuzolimaza izinga lokushisa leglue. Lapho izinga lokushisa lesixazululo samanzi likhuphuka, i-fiber polymer kancane kancane ayinawo amanzi, futhi i-viscosity yesixazululo samanzi iyancipha. Lapho iphuzu lokunamathela lifinyelelwa, i-polymer yomiswa ngokuphelele bese kukhiqizwa i-glue. Ngakho-ke, izinga lokushisa lokusebenza kwamalungu esimende livame ukuba ngaphansi kwezinga lokushisa leglue lokuqala. Ngaphansi kwaleli zinga, lapho izinga lokushisa liphansi, i-viscosity iba phezulu, futhi umphumela wangempela we-viscosification kanye nokugcinwa kwamanzi uba mkhulu kakhulu.
Isikhathi sokuthunyelwe: Ephreli-25-2024