Yiliphi inani le-hydroxypropyllm methylcellulose (hpmc) ku-putty powder?

Inani le-hydroxypropyllll methylcellulose (HPMC) ku-putty powder kungenye yezinto ezibalulekile ezinquma ukusebenza kwe-putty powder. Isengezo esinengqondo se-HPMC singathuthukisa ukuwenza, ukugcinwa kwamanzi, ukunamathela nokuqina kwe-putty powder, ngenkathi ukwengezwa ngokweqile noma okunganele kuzothinta umphumela wokugcina we-Putty Powder.

1. Iqhaza le-HPMC ku-Putty Powder
I-HPMC iyi-polymer evame ukusetshenziswa kwamanzi enemisebenzi esemqoka elandelayo:

(1) Thuthukisa ukugcinwa kwamanzi
Umsebenzi oyinhloko we-HPMC ukuthuthukisa umthamo wokugcina amanzi we-Putty Powder, okwenza kube nzima ngamanzi azolahleka, andise isikhathi esivulekile se-putty powder, futhi anciphise ukuqhekeka okubangelwa ukuhwamuka kwamanzi.

(2) Thuthukisa ukusebenza
I-HPMC ingathuthukisa ukugcotshwa kwe-putty powder, yenza ukuklabalasa, ukunciphisa ukumelana nokwakha, ukuthuthukisa ukusebenza kokwakha, nokunciphisa amandla abasebenzi abasebenzi bezokwakha.

(3) Ukuqhakambisa Adhesion
I-HPMC ingathuthukisa ukunamathela phakathi kwe-putty powder kanye ne-wall base, vikela ungqimba lwe-tutty ekuweni, futhi uthuthukise ukuqina.

(4) Ukuvimbela ukuslayida
Ngesikhathi sokwakhiwa kwe-facade, i-hpmc ingavimba ngempumelelo impuphu yama-putty kusuka ekusheleleni ngenxa yokudonsela phansi, ukuthuthukisa ikhwalithi yokwakha, ikakhulukazi lapho kwakhiwa izingqimba.

2. Izici ezithinta i-HPMC
Inani le-HPMC lithintwa yizici eziningi, kufaka phakathi ifomula ye-putty powder, imvelo yokwakha, kanye nekhwalithi ye-HPMC.

(1) ifomula ye-putty powder
I-putty powder ivame ukwakhiwa nge-calcium ebisi-calcium (calcium carbonate), umlotha ophindwe kabili, usimende, i-lime powder, i-glue powder, njll. Amafomula ahlukene anezidingo ezihlukile ze-HPMC. Isibonelo, uPument-based tulletty udinga amanzi amaningi ukusabela kwawo kwe-hydration, ngakho-ke inani le-HPMC elisetshenzisiwe lizobe liphezulu.

(2) Imvelo yokwakha
Ukushisa, umswakama, kanye nezinga lokufakwa kwamanzi kwamanzi wesendlalelo sezisekelo kuthinta nenani le-HPMC elalisetshenzisiwe. Emazingeni okushisa aphezulu nendawo eyomile, ukuze kugweme ukuhwamuka ngokweqile kwamanzi, kuvame ukudingeka ukwandisa inani le-HPMC.

(3) Ikhwalithi ye-HPMC
I-HPMC yemikhiqizo ehlukene namamodeli inezakhiwo ezihlukile ezinjengokubona, ukufakwa esikhundleni se-degree, nobunzima, futhi kunemiphumela ehlukile ku-Putty Powder. I-High-Viscutity HPMC inokugcinwa okungcono kwamanzi, kepha kungathinta ukusebenzi, ngakho-ke kuyadingeka ukukhetha imodeli efanelekile ngokuya ngesimo esithile.

3. Kunconywe umthamo we-HPMC
Umthamo onconyiwe we-HPMC ngokuvamile uyahlukahluka ngohlobo lwe-Putty Powder:

(1) Intellior Wall Getty Powder
Umthamo onconyiwe we-HPMC ngokuvamile u-0.2% ~ 0.5% (okuhlobene nesilinganiso esiphelele se-Putty powder). Uma i-viscosity ye-HPMC iphakeme, umthamo onconyiwe useduze nenani eliphansi; Uma i-viscosity iphansi, ingakhula ngokufanele.

(2) udonga lwangaphandle oludongeni lwe-putty
Udonga lwangaphandle ludinga ukumelana kwesimo sezulu okungcono kanye nokumelana kwesimo sezulu, ngakho-ke inani le-HPMC elingeziwe liphakathi kuka-0.3% ~ 0.6% ukuthuthukisa ukugcinwa kwamanzi nokunamathelisa.

(3) ungqimba obukhulu obukhulu
Nge-ungqimba elibanzi, ukuze uvikele ukulahleka kwamanzi okusheshayo nokuqhekeka, inani le-HPMC elingeziwe lingakhuphuka ngokufanele, ngokuvamile phakathi kuka-0.4% no-0.7%.

4. Ukuqapha
(1) Gwema ukwengeza ngokweqile
Ukungeza kakhulu i-HPMC kungadala ukuthi i-viscosity ye-putty powder ibe phezulu kakhulu, ukwenza ukwakhiwa kube nzima, kucacele ukungabushelelezi, futhi kuthinte amandla ngemuva kokuphulukisa, kubangele ukuqhekeka noma okubangela ukuqhekeka noma okubangela ukuqhekeka noma okubangela ukuqhekeka noma i-pofping.

(2) Khetha imodeli efanele
I-HPMC ene-visosities ehlukene ilungele izinhlobo ezahlukene ze-putty powder. Isibonelo, i-HPMC ene-viscosity ephansi (400-20,000mpa nye) ilungele i-General ingaphakathi lodonga, kuyilapho i-HPMC enokuvunywa okuphezulu (75,000-100,000mpaise

(3) Ukuhlakazeka okunengqondo nokuchithwa
I-HPMC kufanele ihlakazeke ngokulinganayo ngesikhathi sokukhiqiza ukuze igweme ukwenziwa kwe-agglomeration okubangelwa ukwengeza okuqondile emanzini. Kunconywa ukungeza kancane kancane ngaphansi kokuvuselelwa ngejubane eliphansi, noma usebenzise indlela ye-Premixing ukuxuba namanye ama-powders bese wengeza amanzi ukuvusa.

(4) Sebenzisa nezinye izithasiselo
I-HPMC ivame ukusetshenziswa ngokuhlanganiswa nezinye izengezo (njenge-starch ether, i-latex evuselelayo ye-latex, njll.) Ukwenza ngcono ukusebenza kwe-Putty Powder.

Inani le-HPMC ku-Putty Powder yinto ebalulekile ethinta ukusebenziseka kanye nekhwalithi yomkhiqizo ophelile. Ngokuvamile, inani layo lokungezwa liphakathi kuka-0.2% no-0.6%, elilungisiwe ngokuya ngefomula ethile nezidingo zokwakha. Lapho ukhetha i-HPMC, i-viscosity, izinga lokufaka esikhundleni kanye nezinye izici kufanele lihlanganiswe nokuqinisekisa ukuthi i-Putty Powder inokugcinwa kwamanzi okuhle, ukunamathela kanye nokusebenza kokwakha. Ngasikhathi sinye, inhlanganisela enengqondo nezinye izithasiselo kanye nokwenza kahle indlela efanele yokuhlakazeka ingenza ukusetshenziswa okuhle kweqhaza le-HPMC, ngaleyo ndlela kuthuthukise ikhwalithi ephelele ye-Putty Powder.