I-HydroxyPOpyl Methylcelcelsulose (HPMC) yi-polymer esetyenziswa ngamanzi asetyenziswa ngokubanzi kwizinto zokwakha, ngakumbi uninzi lwesamente. Iipropathi zekhemikhali zekhemikhali kunye neepropathi ze-HPMC zenza ukuba idlale indima ebalulekileyo ekuphuculeni umlinganiso, ukusebenza kwendlela, kunye nokuqina kweethayile zeTile.
(1) Ulwazi olusisiseko lwe-HPMC
1. Ubume be-HPMC
I-HPMC yi-selsulose efunyenwe ngokufumana i-shemilsulose ye-shemilsulose yendalo. Isakhiwo saso siyenziwa ikakhulu yi-Managexy (-och₃) kunye ne-hydroxypropoxy (-CâshChhch₃) Ukutshintsha amaqela e-hydroxyl kwikhonkco leselselose. Olu lwakhiwo lunika i-HPMC elungileyo ye-sloubility kunye nobuchule bokungasebenzi.
I-2. Iipropathi zomzimba ze-HPMC
Ukulwa: i-HPMC inokunyibilikisa emanzini ebandayo ukwenza isisombululo esibonakalayo se-colloidal kwaye inombala omnandi kunye nobuchule bokuthambisa.
I-thermoge: isisombululo se-HPMC siya kwenza ijeli xa ishushu kwaye ibuyele kwindawo yolwelo emva kokupholisa.
Umsebenzi womhlaba: i-HPMC inemisebenzi elungileyo yomphezulu kwisisombululo, esincedayo ukwenza isakhiwo esizinzileyo.
Ezi ndawo zodwa zomzimba kunye neekhemikhali zenza i-HPMC yeyona nto ifanelekileyo yokutshintsha izibhengezo zethayile.
(2) Indlela yokusebenza kwe-HPMC ekwandisa ukusebenza kwesamente esekwe
1. Ukuphucula ukugcinwa kwamanzi
Umgaqo: I-HPMC yenziwa ngendlela yenethiwekhi ye-viscous kwisisombululo, esinokuthi sitshixe ngokufumana umswakama. Eli siko lokugcina amanzi libangelwa linani elikhulu lamaqela e-hydrophilic (njengamaqela e-hydroxyl) kwiimolekyuli ze-HPMC, ezinokuthi zigcine ubungakanani bomswakama.
Ukuphuculwa kwe-adhesion: Ukuhlanjwa okusekwe kwi-cememement kufuna ukufuma ukuba nenxaxheba kwi-hydration parder yokuphendula ngexesha lenkqubo yokukhula. I-HPMC igcina ubukho bokufuma, ivumela isamente kwi-qumed ukuba inyuke ngokupheleleyo, ngaloo ndlela iphucule ukubika.
Yandisa ixesha elivulekileyo: Ukugcinwa kwamanzi kuthintela ukunamathela ekwenzisweni ngokukhawuleza ngexesha lokwakha, ukwandisa ixesha lohlengahlengiso lwethayile.
2. Ukuphuculwa kokusebenza ngokwakhiwa
Umgaqo: i-HPMC inefuthe elihle, kwaye iimolekyuli zayo zinokwenza inethiwekhi-njengesakhiwo esifana nesisombululo esinamandla, ngaloo ndlela kunyusa ukubonakala kwesisombululo.
Ukuphucula ipropathi yokuhlambela i-anting: i-slicry ene-slicked ineepropathi ezingenantlonelo ezingenantlonelo ngexesha lenkqubo yokwakha, ukuze iithayile zihlale zikwindawo emiselweyo ngexesha lenkqubo yepeyinti ngexesha lenkqubo.
Ukuphucula ulwahlulo: I-viscofity efanelekileyo yenza ukuba kube lula ukusebenzisa kwaye ukusasazeka ngexesha lokwakha, kwaye kwangaxeshanye kulunge kakhulu, kunciphisa ubunzima bokwakha.
I-3. Ukuphucula ukuqina
Umgaqo: I-HPMC ixhasa ukugcinwa kwamanzi kunye nokunamathela amanzi kunye nokuphucula ukuqina kwesamente esekwe kwi-thile.
Ukuphucula amandla e-bondile: I-Supered epheleleyo ye-hyding yesamente ibonelela ngobuqhetseba obomeleleyo kwaye ayithanga ukuwela okanye ukuqhekeza ngexesha lokusetyenziswa kwexesha elide.
Ukuphucula ukuxhathisa ubuqhetseba: Ukugcinwa kwamanzi okuphepha amandla amakhulu okuphelisa ukunamathela ngexesha lenkqubo yokomisa, ngaloo ndlela kuncitshiswa ingxaki eyoyikisayo ebangelwa kukuntywila.
(3) Inkxaso yedatha yovavanyo
1. Uvavanyo lokugcina amanzi
Izifundo zibonakalisile ukuba inqanaba lokugcina amanzi le-cememees esekwe kwi-cememes kunye nokongezwa kwe-HPMC kuphuculwe kakhulu. Umzekelo, ukongeza i-0.2% ye-HPMC kwi-Adhesive inokunyusa umgangatho wokugcina amanzi ukusuka kwi-70% ukuya kwi-95%. Olu phuculo lubalulekile ekuphuculeni amandla aphezulu kunye nokuqina kokunamathela.
2. Uvavanyo lwe-viscosity
Isixa se-HPMC songezwa sinefuthe elibonakalayo kwi-vicmosity. Ukongeza i-0.3% ye-HPMC kwi-cemement yesamente enokunyusa i-viscofity izihlandlo ezininzi, ukuqinisekisa ukuba ukunamathela okunene kunendlela elungileyo yokulwa nokusebenza.
3. Uvavanyo lwamandla lweBondo
Ngovavanyo lokuthelekisa, kwafunyaniswa ukuba amandla aphezulu phakathi kweethayile kunye namantshontsho e-HPMC angcono kakhulu kune-Abedhesves ngaphandle kwe-HPMC. Umzekelo, emva kongeza i-0.5% ye-HPMC, amandla aphezulu anokunyuka malunga ne-30%.
(4) Imizekelo yesicelo
I-1. Ukubeka imigangatho yethayile kunye neethayile zodonga
Kwinyani ilele iithayile zemigangatho yomgangatho kunye neethayile zeWall, eziphuculweyo ze-HPMC-ezisekwe kwizibhengezo ze-cememes ezibonisa ukusebenza okungcono zokwakha kunye nokuhlala kwenziwe. Ngexesha lenkqubo yokwakhiwa, ukunamathela akukho lula ukuphulukana namanzi ngokukhawuleza, kuqinisekisa ukugungqa kokwakha kunye neflethi yeethayile.
I-2. Inkqubo yangaphandle yodonga
I-HPMCS-Adheves ephuculweyo isetyenziswa ngokubanzi kwiinkqubo zangaphandle zodonga. Ukugcinwa kwayo kwamanzi kunye nokunamathelisa qinisekisa ulwalamano oluqinileyo phakathi kweBhodi yokufakelwa kunye nodonga, ngaloo ndlela ukuphucula ukuqina kunye nokuzinza kwenkqubo yokufakwa kwecala lodonga lodonga lodonga.
Ukusetyenziswa kwe-HPMC kwi-Cementhes esekwe kwiifowuni ezinamachaphaza ukuphucula ukusebenza kwentsebenzo yokunamathela. Ngokuphucula ukugcinwa kwamanzi, ukuphucula ukusebenza kwendlela yokwakha kunye nokuphucula ukuqina, i-HPMC yenza ukuba izibhengezo ze-cemements ezisekwe kwi-thememes ilungele ngakumbi kwiimfuno zangoku. Ngokuphuhliswa kwetekhnoloji kunye nemfuno eyandayo yezixhobo zokwakha eziphezulu, amathuba e-HPMC aya kubanzi.
Ixesha lasemva kwexesha: Jun-26 ukuya ku-4024