Ukusetyenziswa kweHydroxypropyl Methylcellulose (HPMC) kwiSamente kunye nePhulo layo lokuPhucula.

IHydroxypropyl Methylcellulose (HPMC) yikhompawundi yepolymer yendalo esetyenziswa kakhulu kulwakhiwo, amayeza, ukutya kunye namanye amasimi. Kwishishini le-cement, i-AnxinCel®HPMC isoloko isetyenziswa njengesongezo sokuphucula kakhulu ukusebenza kwesamente, kunye nokuphucula ukuqhubekeka, ukusebenza kunye nobunzima bokugqibela bemixube yesamente.

1. Iimpawu ezisisiseko kunye nendlela yokusebenza ye-HPMC

I-HPMC yikhemikhali efunyenwe ngokuguqula i-cellulose nge-ethylation, i-hydroxypropylation kunye ne-methylation. Ubume bayo be-molecular bubandakanya amaqela amaninzi e-hydrophilic kunye ne-hydrophobic, eyenza ukuba idlale indima eninzi kwiinkqubo ze-samente. I-HPMC idlala ezi ndima zilandelayo kwisamente:

Isiphumo sokutyeba

I-HPMC inomphumo oqinileyo wokuqina kwaye inokuphucula ngokubonakalayo i-viscosity ye-samente paste, yenza umxube wesamente ufanane ngakumbi ngexesha lokuxuba kunye nokuphepha ukuguqulwa okanye ukuchithwa. Oku kubalulekile ekuphuculeni ukuguquguquka kunye nokuzinza kwentlama yesamente, ngakumbi kwikhonkrithi esebenza kakhulu okanye ezinye izinto eziyimfuneko zesamente, ukuqinisekisa ukuba igcwalisa ukungunda ngcono kwaye inoxinano oluphezulu.

Ukuphucula ukugcinwa kwamanzi

I-HPMC inokulawula ngokufanelekileyo izinga lokumka kwamanzi kwintlama yesamente kwaye ilibazise ixesha lokuqala lokumisela isamente. Ngokukodwa kwiqondo lokushisa eliphezulu okanye kwindawo eyomileyo, inokugcina ukumanzisa kwe-cement paste kunye nokuthintela ukomisa kwangaphambi kwexesha, ngaloo ndlela kuphuculwe ukusebenza kokwakhiwa. Ukugcinwa kwamanzi kuyipropathi ebalulekileyo kwinkqubo yokwakhiwa kwezixhobo zesamente kwaye kunokuthintela ngokufanelekileyo ukubunjwa kweentanda.

Ukuphucula ukuncamathela kunye nokwandisa ulwelo

Ezinye izongezo zeekhemikhali zihlala zongezwa kwi-samente paste, njengeepolymers, i-mineral admixtures, njl., Enokuthi ichaphazele ubuninzi be-cement paste. I-HPMC inokunyusa amandla okudibanisa kwisamente, ukwenza iplastiki eninzi kunye nolwelo, ngaloo ndlela iphucula ukusebenza kolwakhiwo. Ukongeza, i-HPMC inokuphucula ukunamathela phakathi kwesamente kunye nezinye izinto zokwakha (ezifana nesanti kunye negrabile) kunye nokunciphisa ukwenzeka kokwahlula.

Ukuphucula ukuxhathisa kokuqhekeka

Ekubeni i-AnxinCel®HPMC inokuphucula ukugcinwa kwamanzi kwi-samente kunye nokulibazisa inkqubo ye-hydration, inokuphucula ngokufanelekileyo ukuxhathisa ukuqhekeka kwezinto zesamente. Ngokukodwa kwinqanaba lokuqala xa amandla e-samente engafikeleli kwinqanaba elaneleyo, izinto ze-samente zixhomekeke ekuqhekekeni. Ngokusebenzisa i-HPMC, izinga lokucutheka kwesamente linokuthotywa kunye nokwakheka kokuqhekeka okubangelwa kukulahleka kwamanzi ngokukhawuleza kunokuncipha.

2. Impembelelo ye-HPMC ekufakweni kwesamente

Ukuphucula ukusebenza kwesamente

Isiphumo sokujiya se-HPMC senza ukuba intlama yesamente isebenze ngakumbi. Kwiintlobo ezahlukeneyo zesamente (ezifana nesamente yePortland eqhelekileyo, i-samente yokomisa ngokukhawuleza, njl.), i-HPMC inokwandisa ubuninzi be-slurry kwaye iququzelele ukugalela kunye nokubumba ngexesha lokwakha. Ukongeza, i-HPMC inokwenza intlama yesamente izinze ngakumbi ngexesha lolwakhiwo, ukunciphisa ukubandakanywa komoya, kunye nokuphucula umgangatho wokwakha jikelele.

Ukuphucula amandla esamente

Ukongezwa kwe-HPMC kunokuphucula ukusebenza kwamandla e-samente ukuya kwinqanaba elithile. Itshintsha ukuhanjiswa kwamanzi kwi-samente, ikhuthaza ukusabela okufanayo kwe-hydration yamasuntswana e-samente, kwaye ngaloo ndlela iphakamisa amandla okugqibela okuqina kwesamente. Kwizicelo ezisebenzayo, ukongeza inani elifanelekileyo le-HPMC kunokukhuthaza ukusabela kokuqala kwe-hydration yesamente kunye nokuphucula ukunyanzeliswa, ukuguquguquka kunye namandla okuqina kwesamente.

Ukuphuculwa kokuqina

Ukongezwa kwe-HPMC kunceda ekuphuculeni ukuqina kwesamente. Ngokukodwa xa i-samente ibonakaliswe kwiindawo ezinobungozi (ezifana ne-asidi, i-alkali, i-saline, njl.), i-HPMC inokuphucula ukuxhathisa imichiza kunye nokumelana nokungena kwesamente, ngaloo ndlela yandisa ubomi benkonzo yezakhiwo zesamente. Ukongeza, i-HPMC inokunciphisa i-capillary porosity yemixube yesamente kwaye inyuse ukuxinana kwesamente, ngokwenjenjalo inciphisa izinga lokuwohloka kwayo kwiindawo ezirhabaxa.

Ukuphucula ukuziqhelanisa nokusingqongileyo

Ngaphantsi kweemeko zemozulu ezimbi kakhulu, ukusebenza kwesamente kudla ngokuchaphazeleka ngotshintsho kwiqondo lokushisa kunye nomswakama. I-HPMC inokulibazisa ixesha lokumisela udaka lwesamente kunye nokunciphisa iingxaki ezibangelwa ukomisa ngokukhawuleza okanye ukugqithiswa kwamanzi amaninzi. Ngoko ke, ifanelekile ngokukodwa kwiindawo zokwakha ezinokushisa okuphezulu, ukushisa okuphantsi kunye nokutshintsha okukhulu komswakama.

3. Ukusetyenziswa ngokufanelekileyo kwe-HPMC

Nangona ukusetyenziswa kwe-HPMC kwisamente kunokuphucula kakhulu ukusebenza kwayo, ukusetyenziswa kwayo kufuneka kulumke, ngakumbi kwisixa esongezelelweyo. Ukongezwa ngokugqithisileyo kwe-HPMC kunokubangela ukuba i-viscosity ye-cement paste ibe phezulu kakhulu, okukhokelela kumxube ongalinganiyo okanye ubunzima bokwakha. Ngokuqhelekileyo, isixa se-HPMC esongeziweyo kufuneka silawulwe phakathi kwe-0.1% kunye ne-0.5% yobunzima be-samente, kwaye ixabiso elithile lifuna ukulungiswa ngokohlobo oluthile lwesamente, isicelo kunye nendawo yokwakha.

Imithombo eyahlukeneyo, iinkcukacha kunye nohlengahlengiso lwemigangatho yeHPMC inokuba neziphumo ezahlukeneyo kwiipropati zesamente. Ke ngoko, xa ukhetha i-HPMC, izinto ezinjengobunzima bemolekyuli, i-hydroxypropyl kunye ne-methylation degree kufuneka ziqwalaselwe ngokupheleleyo ukufumana olona tshintsho lungcono. Isiphumo.

Njengesiguquli sesamente esibalulekileyo, i-AnxinCel®HPMC iphucula kakhulu ukusebenza, amandla, ukuqina kunye nokuguquguquka kokusingqongileyo kwesamente ngokuqina, ukuphucula ukugcinwa kwamanzi, ukuphucula ukubambelela kunye nokuxhathisa ukuqhekeka. Usetyenziso lwayo olubanzi kushishino lwesamente aluphuculi nje ukusebenza ngokubanzi kwesamente, kodwa ikwabonelela ngenkxaso eyomeleleyo kuphando nophuhliso lweemveliso zesamente ezintsha ezifana nekhonkrithi ephezulu yokusebenza kunye nezixhobo zokwakha ezinobume bendalo. Njengoko iiprojekthi zokwakha ziqhubeka nokwandisa iimfuno zabo zokusebenza kwemathiriyeli, i-HPMC inethemba elibanzi lokufaka isicelo kushishino lwesamente kwaye iya kuqhubeka iyinto ebalulekileyo yokudibanisa isamente.