I-Hydroxypropyl methylcellulose (HPMC) iyinhlanganisela ye-polymer evame ukusetshenziswa ezintweni zokwakha, ikakhulukazi ku-gypsum ebhekene ne-plaster, lapho idlala indima ebalulekile. Njengesengezo, i-HPMC ingathuthukisa ngempumelelo ukusebenza kokusebenza, ukugcinwa kwamanzi kanye nokunamathela kwe-gypsum ebhekene ne-plaster, ngakho-ke isetshenziswa kabanzi ekwakheni nasekuhlobiseni.
1. Izici eziyisisekelo ze-HPMC
I-HPMC iyi-ether engeyona ionic cellulose enokuncibilika okuhle kwamanzi kanye nezakhiwo ezijiya. Ingancibilika ngokushesha emanzini ukuze yakhe uketshezi olufana ne-colloidal, futhi inokunamathela okuhle, ukuthambisa, ukwakheka kwefilimu nokugcinwa kwamanzi. Lezi zici zenza i-HPMC isetshenziswe kabanzi ezintweni zokwakha, ikakhulukazi ezifanele ukusetshenziswa ezintweni ezisekelwe ku-gypsum.
Izici eziyinhloko ze-HPMC zihlanganisa izici ezilandelayo:
Ukugcinwa kwamanzi: I-HPMC ingagcina ngempumelelo umswakama ku-gypsum ebhekene ne-plaster, ngaleyo ndlela yelule isikhathi esivulekile nesikhathi sokusebenza sempahla.
Ukuqina: Njengokuqina, i-HPMC ingakhuphula i-viscosity ye-plaster, ivimbele ukuwohloka, futhi ithuthukise ukuxubha.
I-Lubricity: Izakhiwo zokugcoba ze-HPMC zithuthukisa umuzwa wokubamba we-plaster futhi zenza ukwakha kube lula.
Isakhiwo sokwenza ifilimu: Ingenza ifilimu evikelayo phezu kokhonkolo, ithuthukise ukumelana nokuqhekeka kokhonkolo.
2. Indlela yokusebenza ye-HPMC ku-gypsum ebhekene nokhonkolo
Ngemuva kokwengeza i-HPMC ku-plaster ebhekene ne-gypsum, izakhiwo ezibonakalayo ziyathuthukiswa ikakhulukazi kulezi zici ezilandelayo:
Ukuthuthukisa ukugcinwa kwamanzi: Ngesikhathi senqubo yokwakhiwa kwe-gypsum ebhekene ne-plaster, uma ukulahlekelwa kwamanzi kushesha kakhulu, kuzoholela ekuqineni okungalingani, ukuqhekeka nokunciphisa amandla. I-HPMC ingenza ifilimu ye-hydration emihle ku-plaster, inciphise izinga lokuhwamuka kwamanzi, ukuze ukhonkolo ukwazi ukugcina amanzi anele ngesikhathi sokumisa, iqinisekise ukuqina kwayo okufanayo, ngaleyo ndlela igweme ukukhiqizwa kwemifantu.
Ukuthuthukisa ukunamathela: I-HPMC ingenza ifilimu encane ebusweni be-plaster, engathuthukisa ukunamathela lapho ithinta ubuso be-substrate, ukuze ukunamathela kwe-plaster odongeni kwande. Ikakhulukazi kuma-substrate anezimbotshana nezomile, umphumela wokugcina amanzi we-HPMC futhi ungavimbela i-substrate ukuthi imunce amanzi ngokushesha, ngaleyo ndlela ithuthukise umphumela wokubopha.
Thuthukisa ukumelana nokuqhekeka: I-Gypsum ebhekene ne-plaster isengozini yokuqhekeka ngenxa yoshintsho lokushisa kanye nomswakama.I-HPMC inciphisa izinga lokushwabana lokomisa ngokulungisa izinga lokuhwamuka kwamanzi, ngaleyo ndlela inciphise ngempumelelo ingozi yokuqhekeka kongqimba lukakhonkolo. Ngesikhathi esifanayo, ifilimu ye-colloid eyakhiwe yi-HPMC ingase futhi inikeze isivikelo esithile sokulwa nokuqhekeka kwe-plaster.
Thuthukisa ukusebenza kahle: I-HPMC ingakhuphula i-viscosity kanye ne-plasticity ye-plasticity, ikwenze kube lula ukusebenza lapho uxubha futhi ulinganisa. I-HPMC ithuthukisa ukusebenza kokhonkolo, futhi izisebenzi zokwakha zingakwazi ukulawula ngokunembe kakhudlwana ukujiya nokucaba, okusiza ukuthola umphumela wokuqeda oshelelayo.
3. I-HPMC ithuthukisa ukusebenza kwe-gypsum ebhekene nokhonkolo
Ukwengezwa kwe-HPMC kunentuthuko eminingi ekusebenzeni kwe-gypsum ebhekene ne-plaster, okuhlanganisa:
Ukuthuthukiswa kwe-Rheological: I-HPMC ingakhuphula ngokuphawulekayo i-viscosity yokhonkolo, ilawule ukugeleza kokhonkolo, ivimbele izinkinga zokuwohloka, futhi ithuthukise ukusebenza kokuxubha kokhonkolo.
Ukumelana nesithwathwa okuthuthukisiwe: Ifilimu ye-colloid eyakhiwe yi-HPMC inomthelela wokuvikela kusimende ngokwezinga elithile, ivimbela ukhonkolo ekuqineni nasekuqhekekeni ezindaweni ezishisayo, futhi ithuthukisa ukumelana nesithwathwa.
Ukumelana nokushwabana okuthuthukisiwe:I-HPMC kwandisa umswakama odongeni, kudambise inkinga yokushwabana okubangelwa ukuhwamuka kwamanzi, futhi kwenza ungqimba lukakhonkolo luzinze futhi lungabi lula ukuqhekeka.
Ukunamathela okuthuthukisiwe: Izakhiwo zokubopha ze-HPMC zingathuthukisa ukunamathela kwe-plaster ebusweni be-substrate, okwenza ukunamathela kungabi lula ukuwa.
4. Izinyathelo zokuqapha ekusetshenzisweni kwe-HPMC
Nakuba i-HPMC inezinzuzo eziningi ze-gypsum ebhekene ne-plaster, izici ezilandelayo kufanele ziphawulwe ekusetshenzisweni kwayo:
Ukulawula inani elingeziwe: Ukwengezwa kwe-HPMC eningi kakhulu kuzobangela ukhonkolo ukuthi lunamathele kakhulu, kwenze kube nzima ukushelela, kuthinte umphumela wokwakha. Ngokuvamile, inani elingeziwe le-HPMC kufanele lilawulwe ngaphakathi kwebanga elingu-0.1% -0.5%, futhi lilungiswe ngokuya ngezidingo zangempela.
Ngisho ukuxuba:I-HPMC idinga ukunyakaziswa ngokugcwele lapho ixubene nezinto ezifana ne-gypsum ukuqinisekisa ukuhlakazeka okufanayo nokusebenza okufanayo. I-HPMC ingancibilika emanzini kuqala, bese yengezwa ku-gypsum ukuze ixutshwe, noma ingaxutshwa ngokulinganayo esigabeni sempushana esomile.
Ukuhambisana nezinye izithasiselo: Kuplasta ebheke ku-gypsum, i-HPMC ivamise ukusetshenziswa nezinye izithasiselo, njengezinciphisi zamanzi, izigcina amanzi, njll. Uma ungeza izithasiselo eziningi, naka ukuhambisana kwazo ukuze ugweme ukusebenzisana okuthinta ukusebenza.
5. Ukubaluleka kwe-HPMC embonini
Ku-gypsum ebhekene ne-plaster nezinye izinto zokwakha, i-HPMC, njengesengezo esibalulekile, idlala indima ebalulekile ekuthuthukiseni ukusebenza kwempahla ngenxa yokugcinwa kwamanzi okuhle kakhulu, ukunamathela, ukuqina nokumelana nokuqhekeka. Eminyakeni yamuva nje, ngesidingo esikhulayo sezinto zokwakha eziluhlaza, izici zokuvikela imvelo ze-HPMC nazo zenze ukuthi kancane kancane ithandeke emakethe. Ezakhiweni zesimanje, i-HPMC ayigcini nje ngokuthuthukisa umphumela wokusetshenziswa kwe-gypsum ebhekene ne-plaster, kodwa futhi ithuthukisa ikhwalithi yokwakha nokusebenza kahle, futhi ikhuthaza ukwenziwa kwesimanje kobuchwepheshe bokwakha.
Ukusetshenziswa kwe-HPMC ku-gypsum ebhekene ne-plaster akugcini nje ukuthuthukisa ukugcinwa kwamanzi, ukunamathela kanye nokumelana nokuqhekeka kwezinto, kodwa futhi kuthuthukisa ukusebenza kokwakhiwa, kukwenze kube isithasiselo esibalulekile ekwakhiweni. Izici eziyingqayizivele ze-HPMC nokuthuthukiswa kokusebenza okunezinhlangothi eziningi kukwenze kwabaluleka kakhulu ezintweni zokwakha, ukuhlinzeka ngosekelo oluqinile lobuchwepheshe lwekhwalithi ephezulu, ukuqina okuphezulu kwesakhiwo. Ngokuzayo, ngokuthuthukiswa okuqhubekayo kobuchwepheshe bokwakha, amathuba okusebenza kwe-HPMC ezintweni ezisekelwe ku-gypsum azoba banzi.
Isikhathi sokuthumela: Nov-19-2024