Ngokuthuthuka okuqhubekayo komkhakha kanye nokwenza ngcono ubuchwepheshe, ngesingeniso kanye nokwenza ngcono imishini yokufafaza kwakwamanye amazwe, ubuchwepheshe bokufafaza kanye nobuchwepheshe bokufakelwa buthuthukiswe kakhulu ezweni lami eminyakeni yamuva. Udaka lokufafaza ngomshini luhlukile ngodaka olujwayelekile, oludinga ukusebenza okuphezulu kokugcinwa kwamanzi, uxhaso olufanele kanye nokusebenza okuthile okulwa nokuhlanza. Imvamisa, i-hydroxypropyllylylyly ingeziwe ku-datar, yanoma iyiphi i-cellulose ether (HPMC) esetshenziswa kabanzi. Imisebenzi esemqoka ye-Hydroxypropyllylyly hpmc ku-jonnar yile: ukuqina nokubona, ukuguqula i-RHEOLOON, kanye nomthamo omuhle kakhulu wokugcina amanzi. Kodwa-ke, ukushiyeka kwe-HPMC akunakunakwa. I-HPMC inomphumela wokufaka umoya, okuzobangela iziphambeko eziningi zangaphakathi futhi zinciphise kakhulu izakhiwo zemishini zodaka. I-Shandong Chenbang Fine Chemical Co, Ltd. yafundela ithonya le-HPMC ngamanani okugcinwa kwamanzi, ubuningi, okuqukethwe komoya kanye nezindawo zodaka ze-macroscopic, futhi wafunda nethonya le-hydroxypropyll permmc methylcellulose hpmc ngesakhiwo se-L Isici se-microscopic. .
1. Hlola
1.1 Izinto ezingavuthiwe
Usimende: I-P.0 42.5 usimende, amandla awo angama-28 aguquguqukayo nawe-6.9 no-48.2 MPA ngokulandelana; Isihlabathi: UChengde ungumfula omuhle wesihlabathi, i-40-100 Mesh; I-Cellulose Ether: Ikhiqizwe nguShandong Chenbang Fine Chemical Co, Ltd. Hydroxypropylyl meth, i-powder emhlophe, i-video efingle 40, 100, 150, 200 PA-S; Amanzi: Amanzi ahlanzekile empompini.
1.2 Indlela yokuhlola
Ngokusho kweJGJ / T 105-2011 "Imithetho yokwakha yokufafaza ngemishini kanye nokuphamba", ukuvumelana kodaka kungu-80-120 mm, kanye namazinga okugcina amanzi kukhulu kune-90%. Kulesi sivivinyo, isilinganiso sesihlabathi se-lime-sand sasihlelwa ngo-1: 5, ukuvumelana kwakulawulwa ku (93 + 2) mm, kanti i-cellulose ether yahlanganiswa ngaphandle, futhi inani elihlanganisiwe lalisezinsuselwa ku-Cement Mass. Izakhiwo eziyisisekelo zodaka ezinjengokuqina kwamanzi, okuqukethwe komoya, ukugcinwa kwamanzi, kanye nokuvumelana kuhlolisiswa ngezindlela zokuhlola ze-JGJ 70-2009 indlela. Ukulungiselela, ukuhlolwa kwamandla okuguquguqukayo nokucindezela kwe-specimens kwenziwa ngokuya ngezindlela ze-GB / T 17671-1999 "zokuhlola amandla wesihlabathi somuntu wesibhamu (Indlela ye-ISO)". Ububanzi bezibungu bukalwa yi-mercury porosimetry. Imodeli ye-Mercury Porosimeter yayi-autopore 9500, futhi ibanga lokulinganisa lalingu-5.5 NM-360 μm. Kwenziwa izivivinyo ezi-4 zokuhlola. The cement-sand ratio was 1:5, the viscosity of HPMC was 100 Pa-s, and the dosage 0, 0.1%, 0.2%, 0.3% (the numbers are A, B, C, D respectively).
2. Imiphumela kanye nokuhlaziywa
2.1 Umphumela we-HPMC kumazinga okugcina amanzi kasimende kasimende
Ukugcinwa kwamanzi kubhekisele emandleni odaka ukuze babambe amanzi. Emishinini ofafazwe udaka, engeza i-cellulose ether ingagcina ngempumelelo amanzi, ukunciphisa izinga lokugunda, futhi uhlangabezane nezidingo ze-hydration ephelele yezinto zokwenziwa kosimende. Umphumela we-HPMC ekugcinweni kwamanzi ngodaka.
Ngokukhuphuka kokuqukethwe kwe-HPMC, inani lokugcina lamanzi lodaka likhuphuka kancane kancane. Ama-curves we-hydroxypropyllylylylyllose ether nge-viscosities angu-100, 150 no-200 pa.S ngokufanayo ngokufanayo. Lapho okuqukethwe kungu-0.05% -0.15%, izinga lokugcinwa kwamanzi likhulisa ngokuqondile, futhi lapho okuqukethwe kungu-0,15%, izinga lokugcina amanzi likhulu kune-93%. ; Lapho inani lama-grits lidlula u-0.20%, umkhuba owandayo wamanani okugcinwa kwamanzi uba isicaba, okukhombisa ukuthi inani le-HPMC liseduze nokugcwala. Ithonya lemali yenani le-HPMC nge-viscosity ka-40 Pa.S kumanani okugcinwa kwamanzi cishe umugqa oqondile. Lapho inani likhulu kune-0.15%, inani lokugcina lamanzi lodaka liphansi kakhulu kunalezinhlobo ezintathu ze-HPMC ngenani elifanayo lokuvuleka. Ngokuvamile kuzwakala ukuthi inqubo yokugcinwa kwamanzi ye-cellulose ether yile: iqembu le-hydroxyl e-athor ether ether ku-ether bond lizohlangana ne-molecule yamanzi ukuze athole isibopho samanzi ukwakha amanzi , ngaleyo ndlela kudlala umphumela omuhle wokugcina amanzi; Kukholelwa nokuthi i-InterDiffosion phakathi kwama-molecule amanzi kanye namaketanga wamanzi we-cellulose evumela ama-molecule wamanzi ukungena ngaphakathi kwamaketanga wamanzi we-cellulose ether Ukugcinwa kwamanzi amahle kakhulu kungagcina udaka olulodwa, hhayi lula ukuhlukanisa, futhi uthole ukusebenza okuhle kokuxuba, ngenkathi kunciphisa ukugqoka kwemishini nokwandisa impilo yomshini wokufafaza wodaka.
2.2 Umphumela we-hydroxypropyllyll methylcellulose hpmc kokuqukethwe nokuqukethwe komoya kosimende kasimende
Lapho inani le-HPMC lingu-0-0.20%, ubuningi bodaka bunciphisa kakhulu ngokwanda kwenani le-HPMC, kusuka ku-2050 kg / m3 kuya ku-20%, okucishe kube ngu-20%, okucishe kube yi-2050% Lapho inani le-HPMC lidlula u-0.20%, ubuningi buyehla. ngokuzolile. Qhathanisa izinhlobo ezi-4 ze-HPMC ene-visosities ehlukene, okuphezulu kwe-viscosity, kwehlisa ubuntu bodaka; Ama-curves ama-density ama-doudi ane-viscosities exubile ka-150 no-200 ye-PA.S HPMC ngokuyisisekelo anciphise, ekhombisa ukuthi njengoba ukubonwa kwe-HPMC kuyaqhubeka ukwanda, ukudedelwa akusekwehlisi.
Umthetho wokushintsha kokuqukethwe komoya kodaka ubhekene noshintsho lobukhulu bodaka. Lapho okuqukethwe kwe-hydroxypropyllyly hpmc kungu-0-0.20%, ngokwanda kokuqukethwe kwe-HPMC, okuqukethwe komoya kodaka kukhuphuka cishe ngokuqondile; Okuqukethwe kwe-HPMC kudlula ngemuva kuka-0.20%, okuqukethwe komoya akushintshi, okukhombisa ukuthi umphumela wokungena komoya wodaka useduze ukugcwala. Umphumela ongenisa umoya we-HPMC nge-viscosity ka-150 no-200 pa.S mkhulu kunalokho kwe-HPMC ene-viscosity ka-40 no-100 pa.S.
Umphumela ongenisa umoya we-cellulose ether unqunywa ikakhulukazi ngesakhiwo sayo samangqamuzana. Ama-cellulose ether anamaqembu ama-hydrophilic (hydroxyl, ether) namaqembu we-hydrophobic (i-methyl, indandatho ye-glucose), futhi ayikho esivikelekile. , inomsebenzi ongaphezulu, ngaleyo ndlela ibe nomphumela wokufaka umoya. Ngakolunye uhlangothi, igesi eyethulwe ingasebenza njengebhola elihambisana nodaka, ithuthukise ukusebenza kodaka, yandisa ivolumu, futhi yandise umphumela, okuwusizo kumenzi. Kepha ngakolunye uhlangothi, umphumela wokungena komoya ukhulisa okuqukethwe komoya kodaka kanye nokuqina ngemuva kokuqina, okuholela ekwandeni kwama-pores ayingozi futhi kunciphise kakhulu izakhiwo zemishini. Yize i-HPMC inomphumela othile wokungena komoya, ayikwazi ukufaka esikhundleni se-ejenti yokungena komoya. Ngaphezu kwalokho, lapho kusetshenziswa i-HPMC ne-ejenti yokungena komoya ngasikhathi sinye, umenzeli wokufaka umoya kungenzeka ahluleke.
2.3 Umphumela we-HPMC ezingxenyeni zemishini kasimende kasimende
Lapho inani le-HPMC lingama-0,05% kuphela, amandla aguqukayo odaka ancipha kakhulu, olungaphansi kwama-25% aphansi kunaleso sesampula elingenalutho ngaphandle kwesampula engenalutho - 80%. Lapho inani le-HPMC lidlula u-0.20%, ukwehla kwamandla aguqukayo namandla acindezelayo wodaka akubonakali. I-viscosity ye-HPMC ayinamthelela omncane ezindaweni zodaka zodaka. I-HPMC yethula ama-bubble amaningi amancane womoya, futhi umphumela ongenisa umoya osongeni lombusi wandisa i-porolity yangaphakathi kanye nama-pores alimazayo odaka, okuholela ekunciphiseni okukhulu kwamandla acindezelayo namandla aguqukayo. Esinye isizathu sokwehla kwamandla kadaka yimiphumela yokugcinwa kwamanzi ye-cellulose ether, egcina amanzi ngodaka olukhuni, kanye nesilinganiso esikhulu samanzi se-manzi siholela ekunciphiseni amandla okuhlola. Ngodaka lokwakha imishini, yize i-cellulose ether ingakhulisa kakhulu isilinganiso sokugcinwa kwamanzi ngodaka futhi ithuthukise ukusebenza kwayo, uma umthamo mkhulu kakhulu, ngakho-ke ubudlelwane buba bukhulu kakhulu, ngakho-ke ubudlelwano phakathi kwalaba bobabili kufanele busindwe ngokunengqondo.
Ngokukhuphuka kokuqukethwe kwe-hydroxypropylylylylyl hpmc, isilinganiso sokusonga sodaka sikhombise umkhuba owandayo, okwakukhona ngokuyisisekelo ubudlelwane obuqondile. Lokhu kungenxa yokuthi i-ether ye-cellulose eyengeziwe yethula inani elikhulu lama-bubble amoya, okubangela amaphutha amaningi ngaphakathi kodaka, namandla acindezelayo wesiqondisi se-rose dato ancipha kakhulu, yize amandla aguqukayo ancipha ngezinga elithile; Kepha i-cellulose ether ingathuthukisa ukuguquguquka kodaka, kuwusizo kumandla aguqukayo, okwenza izinga lokuncipha linciphise. Ngokucabanga ngokufanele, umphumela ohlanganisiwe walaba bobabili uholela ekwandeni kwesilinganiso sokugoqa.
2.4 Umphumela we-HPMC kububanzi be-l ngodaka
Ukusuka ku-Pore usayizi Distribution Revistve, idatha yokusabalalisa usayizi we-Pore kanye nemingcele ehlukahlukene yezibalo yamasampula wesikhangiso, kungabonakala ukuthi i-HPMC inethonya elikhulu kwisakhiwo se-pore kasimende:
(1) Ngemuva kokungeza i-HPMC, usayizi wobukhulu bomuntu kasimende unyusa kakhulu. Ku-Pore usayizi Distribution Curve, indawo yesithombe iqhubekela kwesokudla, futhi inani le-pore elihambelana nenani eliphakeme liba likhulu. Ngemuva kokungezwa i-HPMC, ububanzi obukhulu be-pore kasimende bukhulu kakhulu kunalokho kwesampula elingenalutho, kanye nobubanzi besampula eliphakathi kwesampula nge-0.3% umthamo inyuswa ngama-oda ama-2 ubukhulu ngokuqhathaniswa nesampula elingenalutho uma liqhathaniswa nesampula elingenalutho uma liqhathaniswa nesampula elingenalutho uma liqhathaniswa nesampula elingenalutho.
. Kungabonakala etafuleni 1 ukuthi inani lezimbobo ezingenangozi noma izimbobo ezingenangozi zehliswa kakhulu ngemuva kokungeza i-HPMC, futhi inani lezimbobo eziyingozi noma izimbobo ezilimazayo ezikhuphukile. Ama-pores angenabungozi noma ama-pores angenangozi amasampula angahlanganiswe ne-HPMC acishe abe ngu-49.4%. Ngemuva kokungeza i-HPMC, ama-pores angenabungozi noma ama-pores amancane alimazayo ancishiswa kakhulu. Ukuthatha umthamo we-0,1% njengesibonelo, ama-pores angenabungozi noma ama-pores amancane alimazayo ancishiswa cishe ama-45%. %, inani lezimbobo ezilimazayo ezinkulu kune-10um lenyuke cishe amahlandla ayi-9.
. okuhlobene nokuhlakazwa okukhulu. Kepha kulo lonke, ububanzi obuphakathi nobubanzi be-pore, ububanzi obuphakathi nendawo kanye nevolumu ethize yesampula exutshwe ne-HPMC ivame ukukhuphuka uma kuqhathaniswa nesampula elingenalutho, ngenkathi indawo ethile engaphezulu yehla.
Isikhathi se-Pop: APR-03-2023