Kukhona ubuhlobo obuthile phakathi kwekhwalithi ye-powder ye-putty powder kanye ne-HPMC (i-hydroxypropyl methylcellulose), kodwa imisebenzi nemiphumela yazo zombili zihlukile.
1. Ukwakheka kanye nezici zempuphu ye-putty powder
I-putty powder iyimpahla yokwakha esetshenziselwa ukulinganisa udonga, ukulungisa nokuhlobisa. Izingxenye eziyinhloko zihlanganisa izinto eziyisisekelo (ezifana nosimende, i-gypsum), izigcwalisi (ezifana ne-calcium carbonate) nezithasiselo (njenge-cellulose ether, i-ejenti egcina amanzi, njll.). Ikhwalithi yempushana ye-putty powder ikakhulukazi ibhekisela ebuhleni, ukufana nokuzwakala kwezinhlayiya zayo ngesikhathi sokwakhiwa. Le khwalithi yempushana ithintwa yizici ezilandelayo:
Usayizi wezinhlayiyana zokugcwalisa: I-Calcium carbonate ivamise ukusetshenziswa njengesigcwalisi esikhulu. Ukuqina kwezinhlayiya ze-calcium carbonate, ikhwalithi yempushana ye-putty icoleka, futhi kuba ngcono ukucaba nokushelela kodonga ngemva kokufakwa.
Uhlobo lwezinto eziyisisekelo: Isibonelo, i-putty-based putty powder kanye ne-gypsum-based putty powder izoba nokuzwakala okuhlukile nezici ngenxa yezinto eziyisisekelo ezisetshenziswayo. Izinhlayiya ze-putty esekelwe kusimende zingase zibe mahhadla, kuyilapho lezo ze-putty esekelwe ku-gypsum zingase zibe ngcono.
Ubuchwepheshe bokucubungula: Enqubweni yokukhiqiza i-putty powder, izinga lokugaya kanye nokufana kwefomula kuzophinde kuthinte ikhwalithi yempushana. Ubuchwepheshe bokucubungula obungcono bungakhiqiza i-putty powder ethambile futhi efanayo.
2. Indima ye-HPMC ku-putty powder
I-HPMC, okuyi-hydroxypropyl methylcellulose, iyisengezo esivamile ku-putty powder. Kuyi-polymer encibilika emanzini edlala ikakhulukazi indima yokuqina, ukugcinwa kwamanzi kanye nokwenza ngcono ukusebenza kokwakhiwa. I-HPMC ngokwayo ayithinti ngokuqondile i-particle fineness (okungukuthi ikhwalithi ye-powder) ye-putty powder, kodwa inomthelela omkhulu wokuthuthukisa ekusebenzeni kokwakhiwa kwe-putty powder:
Umphumela wokugcinwa kwamanzi: Umsebenzi obalulekile we-HPMC ukugcinwa kwamanzi, okungabambezela ukuhwamuka kwamanzi ku-putty powder ngesikhathi sokwakhiwa futhi kuvimbele i-putty powder ukuthi yome ngaphambi kwesikhathi ngesikhathi sokwakhiwa kodonga. Lokhu kunomphumela omuhle ekulinganisweni kodonga nokunamathela, ikakhulukazi ekushiseni okuphezulu nendawo eyomile, ukugcinwa kwamanzi kubaluleke kakhulu.
Ukuqina komphumela: I-HPMC ingakhuphula i-viscosity ye-putty powder, ukuze ibe nokuvumelana okulinganiselwe kanye nokukhuhla okulula ngemva kokugubha. Lo mphumela usiza ukulawula i-fluidity ye-putty powder ngesikhathi sokwakhiwa, kunciphisa ukwenzeka kokundiza nokuwa kwempushana, futhi kungathuthukisa amandla okubopha, ngaleyo ndlela kuthuthukise ngokungaqondile umuzwa ngesikhathi sokwakha.
Thuthukisa ukusebenza kokwakha: Ukuba khona kwe-HPMC kungenza i-putty powder isebenze kalula ngesikhathi sokwakha, izwakale ishelela, futhi yethule umphumela ofanayo futhi ontekenteke lapho kubushelelezi. Nakuba i-HPMC ingaguquli ubuhle bomzimba bezinhlayiya ze-putty powder, ithuthukisa ukusebenza okujwayelekile kokusebenza futhi yenza umuzwa wempushana ube ntekenteke kakhulu uma usetshenziswa.
3. Umphumela ongaqondile we-HPMC kwikhwalithi ye-putty powder
Nakuba i-HPMC ingaguquli ngokuqondile usayizi wezinhlayiyana noma ukuqina komzimba we-putty powder, ithuthukisa umphumela wokwakhiwa kwe-putty powder ngokusebenzisa ukugcinwa kwamanzi, ukuqina, ukuthambisa kanye nezinye izici, okwenza i-putty powder ibe bushelelezi futhi kulula ukuyisebenzisa uma isetshenziswa. Phakathi nenqubo yokwakha, i-putty powder equkethe i-HPMC kulula ukuyisebenzisa, inciphisa imihuzuko nokungalingani, okwenza abasebenzisi bazizwe bezizwe ukuthi i-powder ibucayi kakhulu.
Ukugcinwa kwamanzi kwe-HPMC kungavimbela ukuqhekeka kwe-shrinkage ku-putty powder ngesikhathi senqubo yokumisa odongeni, okubuye kube nomthelela omuhle ekuthuthukiseni ukugcwala okuphelele nokushelela kodonga. Ngakho-ke, ngokombono womphumela wokugcina wodonga, i-HPMC inomphumela othile ongaqondile ekuhlobiseni kwe-putty powder.
4. Ubudlelwano phakathi komthamo we-HPMC kanye nekhwalithi yempushana
Umthamo we-HPMC nawo udinga ukulawulwa ngendlela efanele. Ngokuvamile, isilinganiso se-HPMC ku-putty powder sincane, futhi ukusetshenziswa ngokweqile kuzoholela ezinkingeni ezilandelayo:
Ukuqina ngokweqile: Uma isilinganiso se-HPMC siningi kakhulu, i-putty powder ingase ibe yi-viscous kakhulu, ikwenze kube nzima ukuyishukumisa, futhi ingase ibangele izinkinga ezifana nokulahlekelwa kwempushana nokunamathela kwendawo. Akulula ukufaka isicaba ngesikhathi sokwakhiwa, okuzothinta umphumela wokugcina odongeni futhi kunikeze abantu umuzwa wempushana enzima.
Nweba isikhathi sokumisa: Umphumela wokugcina amanzi we-HPMC uzobambezela isikhathi sokumisa se-putty powder. Uma isilinganiso sikhulu kakhulu, udonga lungase lungomi isikhathi eside, okuyinto engahambisani nenqubekela phambili yokwakha.
Ngakho-ke, isilinganiso se-HPMC kumele sibe phakathi kwebanga elifanele ukuze lidlale indima yalo ekuthuthukiseni izinga le-putty powder.
Izinga le-putty powder linqunywa ngokuyinhloko ubuhle bezinto eziyisisekelo kanye nokugcwalisa, kanye nenqubo yokukhiqiza nezinye izici. Njengesengezo ku-putty powder, i-HPMC ayinqumi ngokuqondile ikhwalithi ye-powder, kodwa inomthelela omuhle ongaqondile ekuhlobiseni kwekhwalithi yayo ye-powder ngokuthuthukisa ukugcinwa kwamanzi, ukuqina kanye nezakhiwo zokwakha ze-putty powder. Ukusetshenziswa okunengqondo kwe-HPMC kungenza i-putty powder ibonise umuzwa ongcono nomthelela wohlelo lokusebenza ngesikhathi sokwakha, kunciphise amaphutha ekwakhiweni, futhi ngaleyo ndlela kuthuthukise ukucaba kanye nokucoleka kodonga.
Isikhathi sokuthumela: Sep-30-2024