I-Hydroxypropyl methylcellulose, ebizwa ngokuba yi: HPMC okanye i-MHPC. Imbonakalo yayo yipowder emhlophe okanye engemhlophe; eyona nto isetyenziswa kakhulu kukwenza i-polyvinyl chloride ibe yi-dispersant, kwaye yeyona nto incedisayo ekulungiseleleni i-PVC nge-suspension polymerization. Kwinkqubo yokwakha kwishishini lokwakha, isetyenziswa kakhulu kwizakhiwo ezisebenzisa oomatshini ezifana nokwakha udonga, ukuplasta, ukugquma, njl.njl.; ingakumbi kwizakhiwo zokuhombisa, isetyenziselwa ukuncamathisela iithayile ze-ceramic, imabula, kunye nemihombiso yeplastiki. Inamandla aphezulu okubopha kwaye inokunciphisa ubungakanani besamente. . Isetyenziswa njengesithambisi kwishishini lokupenda, esinokwenza umaleko ukhanye kwaye ube buthathaka, sithintele ukususwa komgubo, siphucule ukusebenza kwe-leveling, njl.njl.
Kwi-samente mortar kunye ne-gypsum-based slurry, i-hydroxypropyl methylcellulose idlala indima yokugcina amanzi kunye nokuqina, nto leyo enokuphucula ngempumelelo amandla adibeneyo kunye nokumelana nokuwa kwe-slurry.
Izinto ezifana nobushushu bomoya, ubushushu kunye nesantya soxinzelelo lomoya ziya kuchaphazela izinga lokuguquguquka kwamanzi kwisamente kunye neemveliso ezisekwe kwi-gypsum. Ke ngoko, ngamaxesha ahlukeneyo onyaka, kukho umahluko othile kwimpembelelo yokugcina amanzi kwiimveliso ezinomlinganiselo ofanayo we-hydroxypropyl methylcellulose eyongeziweyo.
Kwisakhiwo esithile, isiphumo sokugcina amanzi kwi-slurry sinokulungiswa ngokunyusa okanye ukunciphisa ubungakanani be-HPMC eyongeziweyo. Ukugcinwa kwamanzi kwi-methyl cellulose ether phantsi kweemeko zobushushu obuphezulu luphawu olubalulekileyo lokwahlula umgangatho we-methyl cellulose ether.
Iimveliso ezibalaseleyo zochungechunge lwe-hydroxypropyl methylcellulose zinokusombulula ngempumelelo ingxaki yokugcina amanzi phantsi kobushushu obuphezulu. Ngamaxesha obushushu obuphezulu, ingakumbi kwiindawo ezishushu nezomileyo kunye nolwakhiwo oluncinci kwicala elinelanga, i-HPMC esemgangathweni ophezulu iyafuneka ukuphucula ukugcina amanzi kwe-slurry.
I-HPMC esemgangathweni ophezulu inobunye obuhle kakhulu. Amaqela ayo e-methoxy kunye ne-hydroxypropoxy asasazwa ngokulinganayo kwi-cellulose molecular chain, nto leyo enokuphucula amandla ee-athomu ze-oxygen kwi-hydroxyl kunye ne-ether bonds ukuba zidibane namanzi ukuze zenze ii-hydrogen bonds. , ukuze amanzi akhululekileyo abe ngamanzi abotshelelweyo, ukuze kulawulwe ngempumelelo ukufuma kwamanzi okubangelwa yimozulu ephezulu, kwaye kufezekiswe ukugcinwa kwamanzi okuphezulu.
Amanzi ayafuneka ukuze kufakwe amanzi ukuze kufakwe izinto ezifaka isamente ezifana nesamente kunye negypsum. Ubungakanani obuchanekileyo be-HPMC bungagcina umswakama kwisamente ixesha elide ngokwaneleyo ukuze inkqubo yokubeka nokuqinisa iqhubeke.
Ubungakanani be-HPMC obufunekayo ukuze kufunyanwe ukugcinwa kwamanzi okwaneleyo buxhomekeke koku kulandelayo:
1. Ukufunxwa komaleko osisiseko
2. Ukwakheka kwesamente
3. Ubukhulu bomaleko wesamente
4. Imfuno yamanzi yesamente
5. Ixesha lokuseta izinto zokufaka ijeli
I-hydroxypropyl methylcellulose ekumgangatho ophezulu ingasasazwa ngokulinganayo nangokufanelekileyo kwi-samente mortar kunye neemveliso ezisekwe kwi-gypsum, kwaye igqume zonke iinxalenye eziqinileyo, kwaye yenze ifilimu yokumanzisa, kwaye umswakama kwisiseko ukhutshwa kancinci kancinci kwixesha elide, kunye nempendulo yokumanzisa kunye nezinto ze-inorganic gelling ukuqinisekisa amandla okubopha kunye namandla okucinezela kwezinto.
Ngoko ke, kulwakhiwo lwasehlotyeni olushushu kakhulu, ukuze kufezekiswe isiphumo sokugcina amanzi, kuyimfuneko ukongeza iimveliso ze-HPMC ezikumgangatho ophezulu ngobuninzi obaneleyo ngokwefomula, kungenjalo, kuya kubakho ukufuma okwaneleyo, amandla anciphileyo, ukuqhekeka, ukugoba kunye nokuchitheka okubangelwa kukoma kakhulu. kodwa kwanokwandisa ubunzima bokwakha babasebenzi. Njengoko ubushushu busiya buhla, ubungakanani bamanzi ongezelelweyo e-HPMC bunokuncipha kancinci kancinci, kwaye isiphumo esifanayo sokugcina amanzi sinokufezekiswa.
Ixesha lokuthumela: Jan-16-2023