Iyini isilinganiso se-HPMC Hydroxypropyl methyl cellulose kanye nosimende?
Udaka lokufaka ubunjiniyela olungangeni manzi, izici zalo luncike esisindweni senethi esilandelayo sezinto ezingavuthiwe ezenziwe: Concrete 30-340, ukwakhiwa kobunjiniyela imfucuza yezitini powder 40-50, lignin fiber 20-24, calcium formate 4-6, hydroxypropyl methyl cellulose 7-9, silicon carbide powder 40-45 powder 40-45, calcium hydrndu20,1 I-10-12, i-silt powder yedolobha elikhulu elomile 30-35, inhlabathi yedolobha laseDatong 40-45, i-aluminium sulfate 4-6, i-carboxymethyl Base isitashi 20-24, izinto eziguquliwe ze-nanotechnology carbon powder 4-6, amanzi 600-650; Udaka lokufakelwa kobunjiniyela olungangeni manzi lwalo mkhiqizo lunokushisa okuqinile, ukumelana nomlilo okuhle, ukubopha okuqinile odongeni, amandla acindezelayo, ukusebenza okuqinile, ukumelana nokuguga okuhle, ukuvikelwa kwemvelo okuhle, umswakama omuhle kakhulu, ukumelana nokuqhekeka, ukuvimbela ukuwa phansi. Namuhla sizokhuluma nge-viscosity ye-hydroxypropyl methyl cellulose isixazululo samanzi konke kukuziphi izici? Asiyifunde ngempela.
1. Isisindo samangqamuzana ahlobene, izinga lokushisa lesisombululo esinamanzi, izinga lokusika kanye nendlela yokuhlola ye-cellulose ether; 2. Ukuphakama kwezinga lokushisa lokuguqulwa kwengilazi, isisindo esikhulu samangqamuzana, i-viscosity yesisombululo iphakeme ngokwemvelo; 3. Ukuphakama kokuqukethwe kwe-cellulose ether, ukuphakama kwe-viscosity yesisombululo, ngakho-ke ekusetshenzisweni kwesicelo kufanele sinake inani elifanele lokufakwa, ukuvimbela ukufakwa kuphezulu kakhulu, futhi kuthinte ngokuqondile izici zodaka lukasimende nokhonkolo lukasimende; 4. Njengeningi lesixazululo, i-viscosity nayo izokwehla ngokunyuka kwezinga lokushisa, kanye nokuphakama kokuqukethwe kwe-cellulose ether, umonakalo omkhulu wokushisa; Ngaphezu kwalokho, umphumela wangempela wokuqina nawo uyahlukahluka ngokuya ngenani lamanzi asetshenziselwa usimende we-epoxy.
I-Hydroxypropyl methyl cellulose i-viscosity yesisombululo samanzi nayo ingasebenza njengesixhumanisi esiyinhloko sokuphawula ngezici ze-cellulose ether, ukuphakama kwe-viscosity yesisombululo esinamanzi, ugqinsi wayo wezinto ze-epoxy usimende, kungcono, ngemuva kwezakhiwo ze-plate gelling, kodwa uma i-viscosity inkulu kakhulu, izolimaza i-epoxy materialability liquidity ngokushesha. Ngokuqondene nodaka oluzilinganisa lona olunoketshezi oluphezulu, i-viscosity ye-cellulose ether izocaciswa ukuthi ibe ngaphansi.
Isixazululo samanzi se-cellulose ether singumzimba we-pseudoplastic, thina esigabeni sakamuva sokutholwa kwesilinganiso se-shear sikhulu, i-viscosity incane.
Ngakho-ke, ukufingqa: ukubumbana kodaka lukasimende kuzoncishiswa ngamandla angaphandle, okuzuzisa ukwakhiwa kobunjiniyela ngemuva, kodwa isixazululo se-cellulose ether esinamanzi esimweni senani eliphansi kakhulu lokuhlushwa, kuzokwenzeka izici ze-non-Newtonian liquid, ngokuphambene nalokho, lapho inani lokuhlushwa likhuphuka, isixazululo samanzi sizokwenzeka izici ze-pseudoplastic liquid.
Ukugcinwa kwamanzi ku-hydroxypropyl methyl cellulose kungenye yezinto ezibalulekile ze-hydroxypropyl methyl cellulose. Izinga lokuhwamuka kwamanzi odaka oluxubile kanye nemikhiqizo esekelwe kusimende lithintwa izinga lokushisa legesi, izinga lokushisa kanye nezinga lokucindezela. Ngakho-ke, ezinkathini ezihlukene zonyaka, kanye ne-hydroxypropyl methyl cellulose inani elifanayo lokusebenza kwamanzi omkhiqizo linomehluko othile.
Ngokuvamile, ukuphakama kwe-viscosity ye-hydroxypropyl methyl cellulose, umphumela wangempela wokugcinwa kwamanzi uzoba ngcono, kodwa ukulimala kwe-viscosity ekugcinweni kwamanzi kuzoncishiswa 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 yokwakhiwa enemininingwane, umphumela wokugcina amanzi we-slurry ungalungiswa ngokulungisa inani le-hydroxypropyl methyl cellulose. Imikhiqizo yochungechunge lwe-Hydroxypropyl methyl cellulose ingaxazulula ngempumelelo inkinga yokugcinwa kwamanzi ngaphansi kwezinga lokushisa eliphezulu eliqhubekayo. Esikhathini esiqhubekayo sokushisa okuphezulu, ikakhulukazi ezindaweni ezishisayo neziyisicefe kanye nokwakhiwa kwechromatography ohlangothini olunelanga elishisayo, ikhwalithi ephezulu ye-HYDROXYpropyl methyl cellulose iyadingeka ukuze kuthuthukiswe ukugcinwa kwamanzi kwe-slurry.
Ikhwalithi ephezulu ye-hydroxypropyl methyl cellulose, inokulingana okuhle, amaqembu ayo asebenzayo e-butyl kanye ne-hydroxypropyl oxygen ehambisana nokusabalalisa okuhlangene kwe-fiber molecular chain structure, ingathuthukisa iqembu le-methyl aldehyde kanye ne-oksijini, kanye nekhwalithi yamanzi yefomu ledijithali i-covalent bond ingaba amanzi abophekile kanye namanzi okuhlakazwa, bese ilawula ngempumelelo ukuhwamuka kwamanzi okubangelwa ukushisa okuphezulu kwamanzi.
Izinga eliphakeme le-hydroxypropyl methyl cellulose lingalingana nomhlaba oxekethile nohwebo kumikhiqizo exutshwe nodaka kanye ne-plaster, futhi zonke izinhlayiya eziqinile ziyi-cyst, ezimanzi, ezipholile, futhi zakha ungqimba lwefilimu, umswakama ophakathi kwesikhathi eside ukhulula kancane kancane kusuka kusisekelo, lapho kuqala ingxube ye-organic compound yokusabela kwe-hydration, bese iqinisekisa ukuhambisana kwamandla aluhlaza namandla ayishumi. Ngakho-ke, ekuqhubekeni kokushisa okuphezulu kwenqubo yokwakhiwa kwehlobo, ukuze kufinyelele umphumela wamanzi, kufanele kube ngokuhambisana neresiphi yenani elithile kanye nekhwalithi yemikhiqizo ye-hydroxypropyl methyl cellulose, ngaphandle kwalokho, izobonisa isicefe ngokushesha futhi ibangele ukugeleza okwanele, ukunciphisa amandla okucindezela, ukuhlukaniswa, kwavela izimfanelo ezifana nesigubhu esingenalutho kanye nokungabaza, futhi kuhlanganiswe nobunzima bokwakha umsebenzi okwanele. Njengoba izinga lokushisa lehla, inani le-hydroxypropyl methyl cellulose lingancishiswa kancane futhi umphumela ofanayo wokugcina amanzi ungafinyelelwa.
Uma i-cellulose ether ingengeziwe, i-chromatography yodaka olusha lukasimende luzokoma ngokushesha, okwenza ukhonkolo awukwazi ukufakwa emanzini ngendlela evamile, okuholela ekutheni udaka lukasimende lungakwazi ukufakwa kanzima futhi uthole ukunamathela okungcono. Ngesikhathi esifanayo, ukungezwa kwe-cellulose ether kwenza udaka lukasimende lube ne-ductility enhle nokuguquguquka, futhi kuthuthukisa amandla okucindezela okubopha odaka lukasimende.
1, usayizi wezinhlayiyana ze-hydroxypropyl methyl cellulose
Usayizi wezinhlayiyana ze-cellulose ether ulimaza ukuncibilika kwayo. I-cellulose ether ecolekile iwukuthi, izinga lokubola kwayo liyashesha kakhulu emanzini futhi liya phezulu izici zayo zokugcina amanzi. Ngakho-ke, usayizi wezinhlayiyana ze-cellulose ether kufanele ufakwe ekuphenyweni kwesinye sezici zayo. Ngokuvamile, usayizi wezinhlayiyana ze-cellulose ether of 80 mesh esekelwe.
2, i-hydroxypropyl methyl cellulose yomile ngaphandle kwezinga lamandla adonsela phansi
I-manic eyomile ayinayo izinga lokudonsela phansi, ibhekisela ekushiseni okuthile kwe-manic cellulose ether eyomile, ukulahleka kwekhwalithi yamakhemikhali kubalwe kumaphesenti wekhwalithi yesampula yoqobo yokuqamba. Ngekhwalithi ethile ye-cellulose ether endaweni eyomile ngaphandle kwezinga lokudonsela phansi liphezulu kakhulu, kuzonciphisa izingxenye ezifanele ku-cellulose ether, ukulimaza umphumela wangempela wokusetshenziswa kwezinkampani ezingaphansi komfula, kodwa futhi kuthuthukise izindleko zokuthenga. Ngokuvamile i-ether ye-cellulose eyomile ngaphandle kwesilinganiso sokudonsela phansi akufanele idlule u-5.0%.
3, i-hydroxypropyl methyl cellulose potassium thiocyanate ash
Ukuze uthole ikhwalithi ethile ye-cellulose ether kokuqukethwe komlotha kuphezulu kakhulu, kuzonciphisa i-ether cellulose ezingxenyeni ezifanele, ukulimaza umphumela wangempela wokusetshenziswa kwezinkampani ezansi nomfula, i-cellulose ether potassium thiocyanate ash content ukucatshangelwa okuyinhloko kwenani lenkomba yezimpawu zayo.
4, i-hydroxypropyl methyl cellulose viscosity
Ukugcinwa kwamanzi kwe-Hydroxypropyl methyl cellulose kanye nomphumela wokujiya kuyisihluthulelo sokwengeza i-ether ye-cement mortar cellulose e-viscosity yayo kanye nokuhlanganiswa.
5, i-hydroxypropyl methyl cellulose PH inani
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 kufanele lilinganiselwe. Ngokuvamile kubalulwe ukuthi isigaba senani le-PH se-cellulose ether kufanele sisetshenziswe njengo-5-9.
6. Ukudluliselwa kwe-hydroxypropyl methyl cellulose
Izinzuzo kanye nokubi kokudluliswa kwe-hydroxypropyl methyl cellulose kungathinta ngqo umphumela wangempela wokusetshenziswa kwayo ezintweni zokwakha. Izinto eziyinhloko ezilimaza ukudluliselwa kwe-cellulose ether yilezi
1) ikhwalithi yezinto zokusetshenziswa; (2) umphumela wangempela wokubulala; (3) Ukulungiswa kobuchwepheshe bokucubungula; (4) ukulungiswa kwe-solvent; (5) Umphumela wangempela we-zhonghe.
Ngokomphumela wangempela wohlelo lokusebenza, ukudluliswa kwe-cellulose ether akufanele kube ngaphansi kwama-80%.
7, i-hydroxypropyl methyl cellulose okusolwa izinga lokushisa
I-Hydroxypropyl methyl celluloseezingxenyeni zikasimende njengesihluthulelo sokwandisa ama-adhesives, i-viscosity kanye ne-ejenti yokugcina amanzi, ngakho-ke i-viscosity kanye nokushisa kwejeli yinani lenkomba eyinhloko ye-hydroxypropyl methyl cellulose. Izinga lokushisa lisetshenziselwa ukwahlulela uhlobo nokucaciswa kwe-cellulose ether, kanye nezinga lokushintshwa kwe-cellulose ether lihlobene.
8. Ngaphezu kwalokho, usawoti kanye nezinsalela nazo zizolimaza izinga lokushisa leglue. Lapho izinga lokushisa lesisombululo samanzi likhuphuka, i-fiber polymer kancane kancane ayinamanzi, futhi i-viscosity yesisombululo samanzi iyancipha. Lapho iphuzu lokunamathela lifinyelelwa, i-polymer yomile ngokuphelele futhi i-adhesive ikhiqizwa. Ngakho-ke, izinga lokushisa lokusebenza lamalungu usimende ngokuvamile lingaphansi kwezinga lokushisa lokuqala leglue. Ngaphansi kwaleli zinga, izinga lokushisa liyancipha, i-viscosity iyanda, futhi umphumela wangempela we-viscosification nokugcinwa kwamanzi ubaluleke kakhulu.
Isikhathi sokuthumela: Apr-25-2024