IHydroxypropyl Methylcellulose (HPMC)yi-non-ionic cellulose ether, esetyenziswa kakhulu kwizixhobo zokwakha, ingakumbi kwizixhobo ze-grouting ezisekwe kwisamente, eziye zatsala ingqalelo engakumbi. Njengesongezelelo se-polymer esisebenza kakuhle, i-HPMC inokuphucula kakhulu ukusebenza kolwakhiwo kunye nokusebenza kokugqibela kwezixhobo ze-grouting, iphucule ukugcinwa kwamanzi, ukunyibilika, ukuhambelana kunye nokunamathela, ngaloo ndlela iqinisekisa umgangatho wolwakhiwo kunye nokhuseleko lobunjineli.
1. Inkcazo kunye neemfuno zokusebenza kwe-grouting yesakhiwo
I-grouting yokwakha isetyenziselwa kakhulu ukuvala izikhewu phakathi kwezixhobo zokwakha, ukulungisa iziseko zezixhobo, ukulungisa iziphene zesakhiwo, ukuvala imingxunya, njl. Izinto eziqhelekileyo ze-grouting ziquka izinto ze-grouting ezisekwe kwisamente, izinto ze-grouting ezinganciphiyo, izinto ze-grouting eziguqulwe nge-polymer, njl. Iimfuno zayo zokusebenza ziquka ikakhulu:
Ukutyibilika kakuhle kunye neempawu ezizihambela ngokwazo, ukuze izinto ezidityanisiweyo zikwazi ukuzalisa kakuhle iindawo ezinzima okanye ezimxinwa;
Ukugcinwa kwamanzi okuphezulu ukuthintela ukushwabana kwangethuba kunye nokuqhekeka okubangelwa kukulahleka kwamanzi;
Ukunamathelana okufanelekileyo kunye nophuhliso lokuqina ukuqinisekisa ukubopha okuqinileyo kwisiseko okanye imivalo yentsimbi;
Ukumelana kakuhle nokuqhekeka kunye nokuqina ukuze kuhlangatyezwane nokhuseleko lwesakhiwo sokusetyenziswa ixesha elide.
Izixhobo ze-grouting zemveli zinokuba nokungamanzi kakuhle, ukwahlulwahlulwa kunye nokuphuma kwamanzi, ukushwabana kunye nokuqhekeka xa kusenziwa, ngoko ke kuyimfuneko ukungenisa izongezo eziphucula ukusebenza-i-HPMC.
2. Iimpawu zokusebenza kwe-HPMC
I-HPMC yi-ether ye-cellulose eguquliweyo eyenziwe nge-cellulose yendalo ene-molecular ephezulu ngokusebenzisa i-etherification reaction, eneempawu ezilandelayo ezibalulekileyo:
2.1. Ukugcinwa kwamanzi kakuhle
I-HPMC inokugcina amanzi ngokufanelekileyo ngexesha lokufuma kwesamente, ilibazise ukulahleka kwamanzi, iqinisekise ukufuma kwesamente ngokupheleleyo, iphucule amandla kwangethuba kwaye inciphise ukuqhekeka.
2.2. Ukwanda kokuguquguquka kunye nokuthamba
Ukongeza ubungakanani obufanelekileyo be-HPMC kunokuphucula kakhulu ukutyibilika kunye nobuthambileyo bokwakhiwa kwezinto zokudibanisa, okwenza kube lula ukuthulula, ukuzalisa kunye nokungcangcazela.
2.3. Ukuzinza okuzinzileyo kunye nokuchasana nokwahlulwahlulwa
I-HPMC yenza ulwakhiwo lwenethiwekhi kwinkqubo ye-grouting, izinzisa ukusasazwa kodaka, kwaye ithintela ukuna kwee-particles, ukwahlulwahlulwa kunye nokuphuma kwamanzi.
2.4. Ukuphuculwa kokusebenza kokubopha
Iimpawu zayo zokwenza ifilimu kunye nefuthe lokumanzisa kwi-substrate zinokuphucula ukubopha phakathi kwezinto ezidityanisiweyo kunye neendawo ezisisiseko ezifana nekhonkrithi, imivalo yentsimbi, kunye nodonga, kwaye zomeleze ukuthembeka kwesakhiwo.
2.5. Ukuphuculwa kokusebenza kolwakhiwo kunye nexesha lokusebenza
I-HPMC ineziphumo ezibalaseleyo zokugcina amanzi kunye nokulibazisa, nto leyo enceda ukwandisa ixesha lokuvula, ukuphucula ukuguquguquka kolwakhiwo, kunye nokuziqhelanisa neemeko ezinzima zokwakha.
3. Isiphumo sokusetyenziswa kwe-HPMC ekwakheni i-grouting
3.1. Ukusetyenziswa kwizixhobo zokufaka isiseko sezixhobo
Ukudibanisa isiseko sezixhobo kufuna amandla aphezulu, akukho kuncipha, kunye nokunyibilika okuphezulu. Emva kokongeza i-HPMC, izinto zokudibanisa zinokugcina ukunyibilika okuhle ngaphandle kokunyusa umlinganiselo wamanzi nesamente, kuthintele ukopha kunye nokwahlukana, kwaye kwangaxeshanye kuphucule uxinano lokuzalisa ukuqinisekisa uzinzo lokusebenza kwexesha elide kwezixhobo.
3.2. Ukusetyenziswa kwi-grouting yokulungisa izakhiwo
Xa kulungiswa iintanda kwizakhiwo zekhonkrithi okanye kwiindawo ezifakwe i-honeycomb, izinto ezifake i-grouting zifuna ukugcinwa kwamanzi amaninzi kunye nokunamathelana okuphezulu. I-HPMC iphucula ngokufanelekileyo ukuhambelana kwezinto ezifake i-grouting kunye nokunamathela kwayo kumphezulu osisiseko, ngelixa ilawula ukuncipha kwaye ithintela ukuqhekeka kwesibini.
3.3. Ukusetyenziswa kwi-grouting ye-duct exinezelekileyo
Ukudibanisa imibhobho exineneyo kufuna ukuba i-slurry ibe nokugeleza okuphezulu kunye neempawu zokuzalisa ukuthintela ukuba umngxuma ungashiywa ungenanto kunye nomsonto wentsimbi ukuba ubole. I-HPMC inokuthintela i-slurry ukuba ihlale kwaye yahlulwe, iqinisekise ukuba i-slurry izaliswe ngokupheleleyo, kwaye iphucule ukuqina.
4. Iingcebiso zokusetyenziswa kwe-HPMC kwifomula ye-grouting
Xa usebenzisa i-HPMC kwizinto zokudibanisa i-grouting, imodeli kunye nomthamo kufuneka zikhethwe ngokufanelekileyo:
Ukukhetha imodeli: Khetha inqanaba elifanelekileyo le-viscosity (ngokubanzi i-50,000~100,000 mPa·s) ngokwemilinganiselo yamanzi nesamente kunye neemfuno zokwakha zenkqubo ye-grouting;
Isixa esongeziweyo: Ngokwesiqhelo yi-0.1% ~ 0.5% yobunzima besamente, enokulungiselelwa ngokusebenzisa iimvavanyo ngokweemfuno ezithile;
Indlela yokongeza: I-HPMC kufuneka isasazwe ngokulinganayo kumxube owomileyo, emva koko kongezwa amanzi ukuze kuxutywe kwaye kuxutywe ukuze kuthintelwe ukuhlangana kunye nokuchaphazela isiphumo.
I-Hydroxypropyl methylcellulose (HPMC), njengesongezo sokwakha esisebenza kakuhle kakhulu, idlala indima engenakutshintshwa ekwakheni izixhobo ze-grouting. Ayiphuculi nje kuphela ukusebenza kolwakhiwo kunye neempawu zoomatshini zezinto ze-grouting, kodwa ikwaphucula umgangatho we-grouting kunye nokuqina kobunjineli. Njengoko iiprojekthi zokwakha ziqhubeka nokuphucula iimfuno zazo zokusebenza kakuhle kolwakhiwo kunye nomgangatho wezinto, i-HPMC iya kusetyenziswa kakhulu kwaye iphuhliswe kwicandelo le-grouting kunye nezinye izixhobo zokwakha. Kubavelisi bezixhobo ze-grouting, ukuqonda ukusetyenziswa ngokufanelekileyo kwetekhnoloji ye-HPMC kuya kuba yenye yezitshixo zokuphucula ukhuphiswano oluphambili lweemveliso.
Ixesha leposi: Julayi-14-2025