IHydroxypropyl methylcellulose (HPMC) i-polymer compound esetyenziswa ngokuqhelekileyo kwizinto zokwakha, ngakumbi kwi-gypsum ejongene ne-plaster, apho idlala indima ebalulekileyo. Njengesongezo, i-HPMC inokuphucula ngokufanelekileyo ukusebenza komsebenzi, ukugcinwa kwamanzi kunye nokunamathela kwi-gypsum ejongene ne-plaster, ngoko isetyenziswa ngokubanzi kulwakhiwo kunye nokuhlobisa.
1. Iimpawu ezisisiseko ze-HPMC
I-HPMC yi-ether ye-cellulose engeyo-ionic kunye nokunyibilika kakuhle kwamanzi kunye neempawu ezityebileyo. Inokunyibilika ngokukhawuleza emanzini ukwenza i-uniform colloidal liquid, kwaye ine-adhesion efanelekileyo, i-lubricity, ifilimu-ifom kunye nokugcinwa kwamanzi. Ezi mpawu zenza i-HPMC isetyenziswe ngokubanzi kwizinto zokwakha, ngakumbi ezifanelekileyo ukusetyenziswa kwizinto ezisekelwe kwi-gypsum.
Iimpawu eziphambili ze-HPMC ziquka le miba ilandelayo:
Ukugcinwa kwamanzi: I-HPMC inokugcina ngokufanelekileyo ukufuma kwi-gypsum ejongene ne-plaster, ngokwandisa ixesha elivulekileyo kunye nexesha lokusebenza kwezinto.
Ukutyeba: Njengento etyebisayo, i-HPMC inokonyusa i-viscosity yodaka, ithintele ukuwohloka, kwaye iphucule ukuxutyushwa.
Ukuthambisa: Iimpawu zokuthambisa ze-HPMC ziphucula ukuvaleka kodaka kwaye zenze ulwakhiwo lube lula.
Ipropathi yokwenza ifilimu: Ingenza ifilimu ekhuselayo kumphezulu we-plaster, iphucula ukuxhathisa kokuqhekeka kwe-plaster.
2. Indlela yokusebenza ye-HPMC kwi-gypsum ejongene nodaka
Emva kokongeza i-HPMC kwi-gypsum ejongene ne-plaster, iipropathi zezinto eziphathekayo ziphuculwa kakhulu kule miba ilandelayo:
Ukuphucula ukugcinwa kwamanzi: Ngexesha lenkqubo yokwakhiwa kwe-gypsum ejongene ne-plaster, ukuba ukulahleka kwamanzi kukhawuleza kakhulu, kuya kubangela ukuqina okungalinganiyo, ukuqhekeka kunye nokunciphisa amandla. I-HPMC inokwenza ifilimu ye-hydration emihle kwi-plaster, inciphisa izinga lokunyuka kwamanzi, ukuze udaka lukwazi ukugcina amanzi aneleyo ngexesha lokumisa, ukuqinisekisa ukuqina kwayo okufanayo, ngaloo ndlela kuphephe ukuveliswa kweentanda.
Ukuphucula ukubambelela: I-HPMC inokwenza ifilimu encinci phezu kwe-plaster, enokuthi ikhulise ukubambelela xa idibene nomphezulu we-substrate, ukwenzela ukuba ukudibanisa kwe-plaster eludongeni kwandiswe. Ngokukodwa kwi-substrates ene-porous kunye neyomileyo, isiphumo sokugcinwa kwamanzi se-HPMC sinokunqanda i-substrate ekufunxeni amanzi ngokukhawuleza, ngaloo ndlela iphucula umphumo wokubambisana.
Yongeza ukuxhathisa kokuqhekeka: I-gypsum ejongene ne-plaster yokubeka isengozini yokushwabana kweentanda ngenxa yokutshintsha kobushushu kunye nokufuma.HPMC ithoba izinga lokucutheka ukomisa ngokulungelelanisa izinga lokunyuka kwamanzi, ngaloo ndlela kuncitshiswe ngokufanelekileyo umngcipheko wokuqhekeka kwi-plaster layer. Ngelo xesha, ifilimu ye-colloid eyenziwe yi-HPMC inokubonelela ngokhuseleko oluthile oluchasene nokuqhekeka kwi-plaster.
Ukuphucula ukusebenza: I-HPMC inokunyusa i-viscosity kunye ne-plasticity ye-plasticity, okwenza kube lula ukusebenza xa kuxutywa kunye nokulinganisa. I-HPMC iphucula ukusebenza kodaka, kunye nabasebenzi bokwakha banokulawula ngokuchanekileyo ngakumbi ukutyeba kunye nokuqina, okunceda ukufumana umphumo wokugqiba ogudileyo.
3. I-HPMC iphucula ukusebenza kwe-gypsum ejongene ne-plaster
Ukongezwa kwe-HPMC kunophuculo oluninzi ekusebenzeni kwe-gypsum ejongene ne-plaster, kuquka:
Uphuculo lweRheological: I-HPMC inokunyusa kakhulu i-viscosity yodaka, ilawule ukunyibilika kodaka, ithintele iingxaki zokwehla, kwaye iphucule ukusebenza kwebrashi yodaka.
Ukomelezwa kokumelana neqabaka: Ifilimu ye-colloid eyenziwe yi-HPMC inempembelelo yokukhusela kwi-plaster ukuya kumlinganiselo othile, ukuthintela udaka ekukhenkceni kunye nokuqhekeka kwiindawo eziphantsi zobushushu, kunye nokuphucula ukuxhathisa kweqabaka.
Uphuculo lokuxhathisa ukushwabana:HPMC kwandisa umthamo wokufuma kwi-plaster, inciphisa ingxaki yokuncipha okubangelwa ukukhuphuka kwamanzi, kwaye yenza ukuba i-plaster layer iqine kwaye iyancipha ukuqhekeka.
Ukubambelela okuphuculweyo: Iimpawu zokudibanisa ze-HPMC zinokuphucula ukubambelela kwi-plaster phezu kwendawo engaphantsi, okwenza ukuba i-coating ingabi lula ukuwa.
4. Izilumkiso ekusebenziseni i-HPMC
Nangona i-HPMC ineenzuzo ezininzi kwi-gypsum ejongene nodaka, le miba ilandelayo kufuneka iqatshelwe ekusebenziseni kwayo:
Ulawulo lwemali eyongeziweyo: Udibaniso oluninzi lweHPMC luya kubangela ukuba udaka luncangathi kakhulu, lwenza kube nzima ukugudisa, kuchaphazela isiphumo sokwakha. Ngokuqhelekileyo, isixa esongezelelweyo se-HPMC kufuneka silawulwe ngaphakathi koluhlu lwe-0.1% -0.5%, kwaye luhlengahlengiswe ngokweemfuno zokwenene.
Nokudibanisa:HPMC kufuneka ishukunyiswe ngokupheleleyo xa ixutywe nezinto ezifana negypsum ukuqinisekisa ukusasazwa okufanayo kunye nokusebenza okufanayo. I-HPMC inokunyibilika emanzini kuqala, emva koko ifakwe kwi-gypsum ukuze ixutywe, okanye inokuxutywa ngokulinganayo kwinqanaba lomgubo owomileyo.
Ukuhambelana nezinye izongezo: Kwi-gypsum ejongene ne-plaster, i-HPMC isetyenziswa rhoqo kunye nezinye izongezo, ezifana nezinciphisi zamanzi, izigcini zamanzi, njl njl. Xa ufaka izongezo ezininzi, qaphela ukuhambelana kwazo ukuphepha ukusebenzisana okuchaphazela ukusebenza.
5. Ukubaluleka kweHPMC kushishino
Kwi-gypsum ejongene ne-plaster kunye nezinye izinto zokwakha, i-HPMC, njenge-additive engundoqo, idlala indima ebalulekileyo ekuphuculeni ukusebenza kwezinto eziphathekayo ngenxa yokugcinwa kwamanzi okugqwesileyo, ukunamathela, ukuqina kunye nokumelana nokuqhekeka. Kwiminyaka yakutshanje, ngokunyuka kwemfuno yezinto zokwakha eziluhlaza, iimpawu zokhuselo lokusingqongileyo ze-HPMC ziye zayenza yathandwa yintengiso. Kwizakhiwo zanamhlanje, i-HPMC ayiphuculi nje kuphela ukusetyenziswa kwe-gypsum ejongene ne-plaster, kodwa iphucula umgangatho wokwakha kunye nokusebenza kakuhle, kwaye ikhuthaza ukuphuculwa kobugcisa bokwakha.
Ukusetyenziswa kwe-HPMC kwi-gypsum ejongene ne-gypsum ayigcini nje ukwandisa ukugcinwa kwamanzi, ukunamathela kunye nokumelana nokuqhekeka kwezinto, kodwa kuphucula ukusebenza kolwakhiwo, okwenza kube yinto efunekayo yokudibanisa ekwakhiweni. Iimpawu ezizodwa ze-HPMC kunye nokuphuculwa kwentsebenzo eneenkalo ezininzi kwenze ukuba kubaluleke ngakumbi kwizinto zokwakha, ukubonelela ngenkxaso yobugcisa obuqinileyo bomgangatho ophezulu, ukugqitywa kwesakhiwo esiphakamileyo. Kwixesha elizayo, ngophuhliso oluqhubekayo lweteknoloji yokwakha, amathuba okusetyenziswa kwe-HPMC kwizinto ezisekelwe kwi-gypsum ziya kuba zibanzi.
Ixesha lokuposa: Nov-19-2024