1. Uhlolojikelele kanye nezakhiwo ze-HPMC
IHydroxypropyl Methylcellulose (HPMC)i-non-ionic cellulose ether. Inezici zokuncibilika kwamanzi, ukuqina, ukugcinwa kwamanzi, ukwakhiwa kwefilimu, ukuhlakazeka nokuzinza ngokwethula i-hydroxypropyl kanye namaqembu asebenzayo e-methyl esakhiweni se-cellulose yamangqamuzana. I-HPMC isetshenziswa kakhulu ezintweni zokwakha ezisekelwe kusimende ezifana nodaka lokwakha, impushana eyimpuphu, usimende ozilinganisayo kanye nokunamathelisa amathayili. Kumaphrojekthi wokwakha wesimanje, ukuze kuthuthukiswe ukusebenza kodaka lukasimende, i-HPMC, njengesengezo esiyisihluthulelo sokusebenza, ingathuthukisa kakhulu ukusebenza nokusebenza nokuqina kwezinto ezisekelwe usimende.
2. Iqhaza le-HPMC odakeni lwempahla yokwakha esekwe kusimende
Ukuqina nokuqinisa umphumela
Njenge-thickener ne-binder, i-HPMC ingathuthukisa ukungaguquguquki, amandla okubopha kanye nokusebenza kodaka ngesikhathi sokwakha. Ngokusebenzisana nosimende nesihlabathi, i-HPMC yenza uhlaka lwenethiwekhi oluzinzile olunezinhlangothi ezintathu, olunikeza udaka amandla aqinile ahlangene, okwenza kube nzima ukuvala futhi ukopha ngesikhathi sokwakha, kuyilapho kwakheka uqweqwe oluminyene phezulu ukuze kuqinisekiswe amandla nokuqina.
Thuthukisa ukusebenza kokugcinwa kwamanzi
Ukugcinwa kwamanzi kungenye yezinto ezibaluleke kakhulu odakeni olusekelwe kusimende, oluthinta ngokuqondile inqubekelaphambili yokusabela kwe-cement hydration. I-HPMC ingathuthukisa kakhulu amandla okugcina amanzi odaka. Indlela yayo yokugcina amanzi iwukunciphisa ukuguquguquka kwamanzi ngokwenza ifilimu yamanzi ene-viscosity ephezulu, ukuze amanzi asatshalaliswe ngokulinganayo odakeni ukuze kuvinjelwe ukulahleka kwamanzi ngokushesha okukhulu. Ngale ndlela, endaweni eyomile noma enezinga eliphezulu lokushisa, i-HPMC ingavimbela ngempumelelo udaka ekuqhekekeni futhi ithuthukise ikhwalithi yokwakha kanye nempilo yesevisi yodaka.
Thuthukisa ukwakhiwa nokusebenza okulwa nokuhlehla
Udaka lukasimende lujwayele ukuwohloka ngesikhathi sokwakhiwa, okuthinta ikhwalithi nokusebenza kahle kwephrojekthi. Ukwengezwa kwe-HPMC kunganikeza udaka ukusebenza okuhle kakhulu kwe-anti-sagging, kuthuthukise i-thixotropy yodaka, futhi kwenze kube nzima ukuslayida ngesikhathi sokwakhiwa kwe-facade. Ngasikhathi sinye, i-HPMC ingakwazi futhi ukwenza udaka lusebenze kahle kakhulu kanye nokuthambisa, ithuthukise ukushelela kokwakhiwa, inciphise ubunzima bokwakha, futhi ithuthukise ukusebenza kahle kokwakha.
Thuthukisa ukushwabana nokumelana nokuqhekeka kodaka
Udaka olusekelwe kusimende lujwayele ukuncipha imifantu ngesikhathi somiswa, okuholela ekunciphiseni ukuqina. I-HPMC inciphisa ngempumelelo ingozi yokuqhekeka kokuncipha ngokuthuthukisa ukuhlangana nokunwebeka kodaka. Ngaphezu kwalokho, i-HPMC inganweba isikhathi sokusabela kwe-hydration odakeni, yenze usimende udonse amanzi ngokwanele, ngaleyo ndlela yehlise ukushwabana kodaka futhi ithuthukise ukumelana nokuqhekeka kodaka.
3. Izindawo zokufaka izicelo ze-HPMC
Udaka olujwayelekile lwe-plaster
Kusimende osimende ojwayelekile, i-HPMC ingathuthukisa ukusebenza kwebhondi kanye nokugcinwa kwamanzi kodaka, iqinisekise ukuthi indawo yokwakha iyafana futhi ibushelelezi, futhi inciphise ukwenzeka kokuqhekeka. I-thixotropy ye-HPMC ingakhuphula ukuguquguquka kokusebenza ngesikhathi sokukhonkoloza, ukuze udaka luphulukiswe ngokushesha futhi lwakhiwe ngemva kokufaka isicelo, futhi lugcine umphumela omuhle wendawo.
Izinamatheliso zamathayela
I-HPMCisetshenziswa kabanzi kuma-adhesives we-tile, futhi amandla ayo okubopha okuhle kanye nezakhiwo zokulwa nokushelela kungasekela ngempumelelo ukunamathiselwa kwama-tile. Ngesikhathi esifanayo, i-HPMC ingakhuphula i-ductility nokugcinwa kwamanzi kwe-adhesive tile, okwenza umphumela wokwakha uzinze futhi uhlale njalo. Ikakhulukazi ekwakhiweni kwamathayela amakhulu, i-HPMC ingasiza abasebenzi bokwakha ukuthi babeke kahle futhi balungise.
Udaka lukasimende oluzilinganiselayo
Udaka oluzilinganisa luyimpahla ekwazi ukuzilinganisa, ezakha ngokushesha esetshenziselwa ukulinganisa phansi. I-HPMC ibamba iqhaza ekuqiniseni nasekugcineni amanzi, okwenza udaka lukasimende oluzilinganisa luzinze kakhudlwana. I-HPMC ingaphinda ithuthukise ubumanzi kanye nokuhlakazeka kodaka oluzilinganisa, ngaleyo ndlela igweme ukwenzeka kwenhlabathi.
Udaka oluxutshwe okomile kanye ne-putty powder
Ngodaka oluxutshwe okomile kanye ne-putty powder, i-HPMC ithuthukisa ukucaba kanye nekhwalithi ephezulu yendawo yokwakha ngokusebenzisa ukugcinwa kwamanzi nokunamathela, kuyilapho ivimbela ukomisa nokuqhekeka. Ku-putty powder, i-HPMC ayinikezi nje kuphela umphumela wokugcoba obushelelezi, kodwa futhi iqinisekisa ukuthi indawo ngemuva kokwakhiwa akulula ukuqhekeka, ukuthuthukisa izinga lokuqeda kanye nempilo yesevisi.
4. Izinyathelo zokuqapha zokusetshenziswa kwe-HPMC odakeni lwempahla yokwakha esekwe kusimende
Ukulawula umthamo
Inani le-HPMC elengeziwe linomthelela omkhulu ekusebenzeni kodaka. Ukwengeza ngokweqile kuzodala ukuthi udaka luminyene kakhulu, kube nzima ukusebenza, futhi lukhiqize amandla abe mhlophe noma ancishiswe phezulu ngemva kokoma. Ngakho-ke, inani le-HPMC kufanele lilawulwe ngokuqinile lapho kulungiswa udaka. Inani lesengezo elinconywayo ngokuvamile lingu-0.1% -0.3% wesisindo sikasimende.
Ukuhambisana nezinye izixube
Kuzinto ezisekelwe kusimende, i-HPMC ingase ihlanganyele nezinye izithasiselo ezifana nezinciphisi zamanzi, ama-ejenti afaka umoya, kanye nama-anti-cracking. Ukuhambisana kwe-HPMC nezinye izixube kudinga ukucatshangelwa lapho kwakhiwa ifomula, futhi ifomula kufanele ithuthukiswe ngokuhlolwa ukuze kuqinisekiswe ukusebenza okungcono kakhulu.
Indlela yokusabalalisa kanye nokuqedwa
I-HPMC kufanele ihlakazwe ngokulinganayo uma isetshenziselwa ukugwema ukuhlangana okuthinta ukusebenza kodaka. I-HPMC ngokuvamile ingangezwa ngesikhathi senqubo yokuhlanganisa ukuze iyincibilikise ngokulinganayo emanzini, ukuze inikeze ukudlala okuphelele endimeni yayo.
I-HPMC isetshenziswa kakhulu odakeni lwempahla yokwakha esekwe kusimende, futhi idlala indima engenakushintshwa ekuthuthukiseni ukujiya, ukugcinwa kwamanzi kanye nokunqanda ukuqhekeka, kanye nokwenza ngcono ukusebenza komsebenzi wokwakha. Ngokuthuthuka kobuchwepheshe bezinto zokwakha kanye nesidingo esikhulayo sokuvikelwa kwemvelo nokongiwa kwamandla, ukusetshenziswa kwe-HPMC nakho kuyakhula futhi kuyathuthuka. Ngokulawulwa kwesayensi kwendlela yokufaka isicelo kanye nomthamo we-HPMC, umphumela wokwakha nokuqina kwezinto ezisekelwe kusimende kungathuthukiswa kakhulu, kuthuthukiswe intuthuko nenqubekela phambili yemboni yezokwakha.
Isikhathi sokuthumela: Nov-11-2024