I-Hydroxypropyl methylcellulose (HPMC) iyi-polymer esetshenziswayo esetshenziswa kabanzi kwizimboni ezahlukahlukene kufaka phakathi ukwakhiwa. Ezikhungweni zasePutty, i-HPMC isebenza ngemisebenzi ehlukahlukene, kufaka phakathi ukuthuthukisa ukuthuthukisa, ukuthuthukisa ukunqwabelana, ukulawula ukugcinwa kwamanzi, nokwenza kahle izakhiwo zemishini.
Ukuqanjwa kwama-Putty kudlala indima ebalulekile ekwakheni njengento eguquguqukayo egcwalisa izikhala, izindawo ezibushelelezi, futhi zinikeza isisekelo sokupenda nezimbobo. I-Hydroxypropyl Methylcellulose (HPMC) ingesinye sezithako ezisemqoka ezisetshenziswa ekuthini ama-tutty ngenxa yezakhiwo zayo ezihlukile nokusebenza okuhlukahlukene.
1.HPMC Chemical Properties
I-Hydroxypropylmethylcellellellulose iyi-polymer yokwenziwa ese-cellulose. Ibonakala ngesakhiwo sayo esiyingqayizivele, equkethe amaketanga we-cellulose axhumene ne-hydroxypropyl kanye namaqembu we-methyl. Izinga lokufakwa esikhundleni salawa maqembu linquma izakhiwo ze-HPMC, kufaka phakathi i-solubity, i-viscosity kanye nekhono elenza ifilimu. Imvamisa, i-HPMC esetshenziswa ekwakhiweni kwama-tutty iyatholakala ku-Medium to High Revosity Amamaki ahlinzekayo ahlinzeka ngezakhiwo ezidingekayo ze-Rheological.
2. Indlela yokusebenza kwefomula yama-putty
Thuthukisa ukusebenza
I-HPMC isebenza njengomugqa omkhulu kanye ne-Rheology modifier ukwenza ngcono ukusebenziseka kokuqanjwa kwama-tutty. Ama-molecule e-polymer afanisa futhi akha inethiwekhi enezici ezintathu, enikeza ukuhlakanipha futhi avimbela izinhlayiya eziqinile ekuxazululeni. Lokhu kuqinisekisa ukusatshalaliswa nokusetshenziswa okulula kwe-putty, ukuvumela ukusakazeka futhi ukwakheka kahle ngaphandle kokugcoba ngokweqile noma ukudonsa.
Thuthukisa ukunamathela
I-Adhesion iyindawo esemqoka ekwakhiweni kwama-tutty njengoba inquma amandla esibopho phakathi kwesipuni kanye ne-substrate. I-HPMC ithuthukisa ukunamathela ngokwakha ifilimu elincanyana endaweni engaphansi komhlaba, ukukhuthaza ukuxhumeka kwemishini nokwandisa indawo yokuxhumana phakathi kwe-putty ne-substrate. Ngokwengeziwe, uhlobo lwe-hpdrophilic lwe-HPMC luyaluvumela ukuthi lihlanganyele nama-putty matrices kanye nezindawo zokunyusa, ukukhuthaza ukunamathela ngisho nasendaweni eyinselele.
Ukulawulwa kokugcinwa kwamanzi
Ukugcinwa kwamanzi kubalulekile ukuze uphule kahle nokomiswa kwezinto zokubeka. I-HPMC isebenza njenge-ejenti yokugcina amanzi ngokuthatha nokugcina umswakama ngaphakathi kwesakhiwo sayo samangqamuzana. Lokhu kuvimbela ukuhanjiswa kwamanzi okusheshayo kusuka ku-putty matrix, kuqinisekisa ukusebenziseka isikhathi eside futhi kufinyelelwe i-hydration eyanele yezithako ezihlosiwe. Ukugcinwa kwamanzi okulawulwayo kubuye kube nokunciphisa i-shrinkage kanye nokuqhekeka ngesikhathi sokomiswa, ukuthuthukisa ukuqina kanye nokuqedwa komhlaba.
Ukusebenza kokusebenza kwemishini
I-HPMC ithuthukisa izakhiwo zemishini zokuqanjwa kwama-tutty ngokuqinisa i-matrix kanye nokwenza ngcono ukubumbana. I-polymer yakha ama-hydrogen bond namanye izithako ku-putty, andise amandla ayo, ukuguquguquka kanye nokumelana nomthelela. Ngokwengeziwe, ikhono le-HPMC elakha amafilimu lidala isithiyo esivikela i-putty ekucindezelekeni kwangaphandle kanye nezici zezemvelo, futhi yandisa ukuqina kwayo nokuphila isikhathi eside.
I-3.Ithonya le-HPMC ekusebenzeni kukaPutty
Izakhiwo ze-Rheological
I-HPMC ithinta kakhulu ukusebenza kwe-rheological kokuqanjwa kwama-tutty, okuthinta i-viscosity, Thixotropy kanye nokugeleza kwezakhiwo. Ukuhlushwa kwe-polymer, isisindo samangqamuzana kanye nezinga lokufaka esikhundleni sokuthola izinga lokuguqulwa kwe-viscosity, okuvumela amakhemithi ukuthi akwazi ukwenza izakhiwo ze-bhe ngokwezenkolo ezimfuneko ezithile zesicelo. Ukulungiswa okufanele komthamo we-HPMC kuqinisekisa ukusebenza kahle kokwakhiwa nokwenza.
ukunamathela
Ukuba khona kwe-HPMC kuthuthukisa amandla ebhondi ekwakhiweni kwama-putty, okuholela ekunamathisweni okuthuthukile kokuhlukahlukene okuhlukahlukene kufaka phakathi ukhonkolo, ngokhuni, ngensimbi kanye noMasonry. Amakhemikhali angaguqula ibanga le-HPMC kanye nokuhlushwa ukufezekisa izakhiwo zokubopha okufisayo, ukuqinisekisa ukuhambisana ngezinto ezahlukahlukene zomhlaba kanye nezimo zemvelo. Ukulungiselela okungaphezulu komhlaba kanye namasu okusebenzisa kungahle kufezekise imiphumela ekhuthaza izibopho ze-HPMC ukukhulisa amandla e-bond kanye nokuqina kwesikhathi eside.
amavukela amanzi
I-HPMC isiza ukuthuthukisa ukumelana kwamanzi kwezakhi zama-tutty ngokulawula ukugcinwa kwamanzi kanye nokunciphisa ukuvumela kwamanzi. I-polymer yakha ifilimu ye-hydrophilic evimbela ukungena kwamanzi ku-matrix ye-putty, ukuvimbela ukuvuvukala, ukonakaliswa kanye nokulahleka kwezakhiwo zemishini. Ukukhetha kahle kwamabanga we-HPMC kanye nezithasiselo zokwakhiwa kungaqhubekisela phambili ukumelana kwamanzi, okwenza i-putty ilungele izinhlelo zangaphakathi nezingaphandle ezivezwe umswakama.
4. Amandla okwenziwa ngomshini nokuqina
Ukufaka i-HPMC ku-Putty UKWAKHIWA KAKHULU kukhulisa amandla okusebenza, ukuqina, kanye nokumelana nokuqhekeka, ukuthukuthela, kanye nesimo sezulu. I-polymer isebenza njenge-ejenti eqinisiwe, iqinisa i-matrix ye-putty kanye nokwenza ngcono ukubumbana. Ngokwengeziwe, amandla we-HPMC okulawula ukugcinwa kwamanzi futhi akhuthaze ukwelashwa ngendlela efanelekile kusiza ukuthuthukisa amandla e-Bond kanye nokusebenza kwesikhathi eside. Amakhemikhali angawenza kahle umthamo we-HPMC kanye nemingcele yokwakhiwa ukuze uzuze ibhalansi efanelekile yezakhiwo zemishini nokuqina.
I-5. Ukucatshangelwa okusebenzayo kokwakheka
Ukukhetha kwamabanga we-HPMC
Lapho ukhetha ibanga elifanele le-HPMC lokuqamba ama-putty, ama-adforators kumele abheke izinto ezahlukahlukene, kufaka phakathi ukubonana, izinga lokufaka esikhundleni, kanye nokuhambisana nezinye izithako. Amamaki okuvusa aphezulu alungele ama-termies ama-termies kanye nezicelo ezimile, ngenkathi amama amamathi aphansi aphansi alungele ukwakheka okubushelelezi kanye nokusakazeka okulula. Amakhemikhali kufanele futhi aqinisekise ukuhambisana phakathi kwe-HPMC nezinye izithasiselo ezifana nama-filler, imibala, kanye nezindawo zokugcina ukugwema izindaba zokuhambisana nokuwohloka kokusebenza.
dose actimization
Inani elifanele le-HPMC lincike ezicini ezifana nezakhiwo ezifiselekayo, indlela yesicelo, uhlobo lwe-substrate kanye nezimo zemvelo. Amakhemikhali kufanele enze ukuhlolwa okuphelele ukuthola umthamo ongcono kakhulu ofinyelela ekusebenzeni okufisayo ngaphandle kokuyekethisa izindleko. Ukusetshenziswa ngokweqile kwe-HPMC kungahle kube nokubonakala ngokweqile, ubunzima besicelo, kanye nezikhathi zokumisa isikhathi eside, ngenkathi ukusetshenziswa kungaphansi kokulawulwa okunganele i-rheology kanye nokuncishiswa ukusebenza.
6. Ukuhambisana nezinye izengezo
I-HPMC ixhumana nezithasiselo ezahlukahlukene ezisetshenziswa kakhulu ezakhiweni ze-tutty, ezinjengabakhulu, abahlakazekile kanye nezindawo zokugcina. Amakhemikhali kufanele ahlole ngokucophelela ukuhambisana kanye nokushintshana kwe-HPMC nezinye izithako ukuze aqinisekise ukusebenza kahle nokuqina. Ukuhlolwa kokuvumelana, okubandakanya ukuhlaziywa kwe-mboleko nokuhlolwa kwesitoreji isikhathi eside, kusiza ukukhomba noma yikuphi ukusebenzisana noma izindaba zokuqalwa kusenesikhathi kwinqubo yokuthuthukiswa ukuze kulungiswe nokwenza kahle.
7. Ubuchwepheshe besicelo
Amasu wokusebenza afanele abucayi ukukhulisa ukusebenza kwezindlela zokufaka ama-tutty aqukethe i-HPMC. Amakhemikhali kufanele anikeze imiyalo ecacile nemihlahlandlela yokulungiselela okungaphezulu, ukuxubana, ukuxubana kanye nokwelapha ukuqinisekisa imiphumela efanele. Ukufeza ukunamathela okudingekayo, bushelelezi nokuqina, amasu anjengokuthi ukufukula, isimo esisezingeni eliphansi kanye nezingubo eziningi ezihlotshisiwe. Ukuqeqeshwa kanye nemfundo yabasebenzi bezokwakha kuqinisekisa imiphumela engaguquki, esezingeni eliphakeme, ukunciphisa izindaba ze-Rework nezezimali.
Isikhathi sePosi: Feb-22-2024