Ukusetyenziswa kwe-HPMC kwizincamathelisi zethayile kunye nodaka lwesamente

I-Hydroxypropyl methylcellulose (HPMC)yi-non-ionic cellulose ether. Isetyenziswa kakhulu kwicandelo lezinto zokwakha ngenxa yokunyibilika kakuhle kwamanzi, ukuqina, ukugcinwa kwamanzi kunye neempawu zokubopha, ingakumbi kwi-tile adhesives kunye ne-samente mortar. I-HPMC ayiphuculi kuphela ukusebenza kolwakhiwo lwezixhobo, kodwa ikwaphucula neempawu zayo zoomatshini kunye nokuqina. Sisithako se-polymer esiyimfuneko kwi-dry-mixed mortar yanamhlanje.

1. Ukusetyenziswa kwe-HPMC kwizincamathelisi zethayile

I-adhesive yethayile yinto eguqulweyo esekelwe kwisamente esetyenziselwa ngokukodwa ukubeka iithayile namatye. Ukusetyenziswa kwe-HPMC kubonakala kakhulu kwezi zinto zilandelayo:

1.1. Phucula ukusebenza kolwakhiwo

I-HPMC inokuphucula ngokufanelekileyo ukuthambisa kunye nexesha lokusebenza kwezincamathelisi zethayile, yenze kube lula ukuzikrwela nokuzisebenzisa ngokulinganayo, kwaye iphucule ukusebenza kakuhle kokwakha. Ingakumbi kwiindawo ezishushu nezomileyo, i-HPMC enokugcinwa kwamanzi okuqinileyo inokulibazisa ukufuma kwamanzi kwaye ithintele ukoma kakhulu okubangela ukuba ukunamathelana kube buthathaka.

1.2. Ukugcinwa kwamanzi okwandisiweyo

I-HPMC esemgangathweni ophezulu inomthamo obalaseleyo wokugcina amanzi, nto leyo evumela isamente ukuba ifunxwe ngokupheleleyo kwaye iphucule amandla okubopha kweglue. Kwangaxeshanye, ukugcinwa kwamanzi kunokunciphisa iingxaki zomgangatho ezifana nokugqobhoza nokuwa.

1.3. Ukuphucula ukusebenza kokungatyibiliki

Xa kubekwa iithayile ngokuthe nkqo, i-HPMC inokunciphisa ngempumelelo ukutyibilika kweethayile ngokulungelelanisa ukuhambelana kwezinto kunye ne-thixotropy, iphucule ukhuseleko lokusebenza kunye nomgangatho wokubekwa.

1.4. Ixesha elivulekileyo eliphuculweyo kunye nexesha lokulungisa

I-HPMC inokwandisa ixesha lokuvula (oko kukuthi ixesha lokubeka iithayile emva kokufaka) kunye nexesha lokulungisa (ixesha lokulungisa indawo yeethayile) yeglu yethayile, iphucula ukuguquguquka kunye nokunyamezela iimpazamo zokwakha.

2. Ukusetyenziswa kwe-HPMC kwisamente yesamente

Udaka lwesamente lusetyenziswa kakhulu kwiikhonkco zokwakha ezifana nokwakha ngomthi, ukuplasta kunye nokubeka phantsi. Emva kokongeza i-HPMC, ukusebenza kodaka lwesamente kuye kwaphucuka kakhulu:

2.1. Ukugcinwa kwamanzi kuphuculwe kakhulu

Kwisigqubuthelo sesamente sendabuko, amanzi angena lula kwisiseko okanye aphele ngaphambi kwexesha, nto leyo ebangela ukuba isigqubuthelo somile kwaye siqhekeke kwaye singanamatheli kakuhle. I-HPMC inokubamba umswakama, iqinisekise ukuba isigqubuthelo sinomswakama owaneleyo wokusabela emanzini ngaphambi kokuba siqine, ngaloo ndlela siphucula amandla aso okugqibela.

2.2. Ukuphucula ukusebenza kakuhle nokusebenza kakuhle

I-HPMC iphucula ukutyeba kunye nokuhambelana kwesamente, okwenza kube lula ukusasazeka nokugudiswa, kungenzeki ukuba ihlukaniswe okanye ihlulwe, kwaye iphucula imvakalelo kunye nomgangatho wolwakhiwo.

2.3. Phucula ukumelana nokuqhekeka

Ekubeni i-HPMC iphucula ukugcinwa kwamanzi, ukufuma kwesamente kugqibelele ngakumbi, kwaye iingxaki zokuqhekeka ezibangelwa kukuncipha ziyancipha kakhulu, nto leyo enceda ekuphuculeni ukuqina kunye nokuzinza komgangatho wesamente.

2.4. Yandisa ixesha lokwakha

Kwiindawo ezinobushushu obuphezulu okanye ezomileyo emoyeni, i-mortar eqhelekileyo kulula kakhulu ukuyilahla amanzi kwaye iqine. I-HPMC inokwandisa kakhulu ixesha lokusebenza kwaye iphucule ukusebenza kakuhle kolwakhiwo, ingakumbi kwimisebenzi emikhulu.

3. Amanyathelo okusebenzisa kunye nomlinganiselo wokongeza i-HPMC

Ubungakanani obucetyiswayo bokongeza i-HPMC ngokubanzi yi-0.1% ~ 0.5% yobunzima besamente, kodwa kufuneka ihlengahlengiswe ngokuguquguqukayo ngokwefomula yemveliso kunye neemfuno zokwakha. Ukongeza kakhulu kunokubangela ukuba i-mortar inamathele kwaye inciphise ukunyibilika; okuncinci kakhulu akuyi kudlala indima yokugcina amanzi kunye nokuqina.

Xa ukhetha i-HPMC, kufuneka kuqwalaselwe ezi parameter zilandelayo:

Ukuqina: Okukhona ukuqina kuphezulu, kokukhona ukugcinwa kwamanzi kuqina kwaye ukusebenza kolwakhiwo kuphucuka, kodwa kunokuchaphazela ukugeleza kwamanzi;

Ubungakanani bamasuntswana kunye nokunyibilika kwawo: Kucetyiswa ukusebenzisa iimveliso ezikhawulezileyo ukuze kube lula ukusasazeka ngokulinganayo kodaka oluxutywe nolomileyo;

Umxholo wothuthu kunye nobunyulu: I-HPMC esemgangathweni ophezulu kufuneka ibe nomxholo wothuthu ophantsi kunye nobunyulu obuphezulu ukunciphisa impembelelo yokufuma kwesamente.

Njengesithako sepolymer esisebenza kakuhle, i-HPMC ibe sisithako esibalulekileyo ekuqulunqweni kwezinto zokuncamathelisa iithayile kunye nodaka lwesamente. Inika inkxaso enamandla yokwenza ngcono ukusebenza kwezixhobo zokwakha zanamhlanje ngokuphucula ukugcinwa kwamanzi, ukuphucula ukusebenza kolwakhiwo, kunye nokuphucula ukunamathela. Ngokuhambelana nophuhliso lwezakhiwo eziluhlaza kunye nolwakhiwo oluphambili kwixesha elizayo,amathuba okusetyenziswa kwe-HPMC aya kuba banziUkukhetha uhlobo olufanelekileyo kunye nobungakanani be-HPMC ngundoqo ekuphuculeni ukusebenza kwezincamathelisi zethayile kunye neemveliso zesamente.