Hydroxypropyl methylcellulose (HPMC)i organic polymer kemikari inoshandiswa zvakanyanya mukuvaka, kunyanya mumadhaka, machira, anonamira uye zvimwe zvigadzirwa. Basa guru reHPMC admixture nderekuvandudza mashandiro ekuvaka kwedhaka, kuvandudza kuchengetwa kwemvura uye kuwedzera nguva yekuvhura. Sezvo kudiwa kwezvinhu zvepamusoro-soro muindasitiri yekuvaka kuri kuramba kuchiwedzera, kushandiswa kweHPMC kwakagamuchira kutariswa kwakapararira.
1. Zvinhu zvakakosha zveHPMC
HPMC is water-soluble cellulose ether ine yakanaka hydration, adhesion uye thickening zvivakwa. Inogona kuvandudza zvakanyanya kuchengetwa kwemvura yedhaka, kuwedzera nguva yekuvhura, uye kuwedzera sag kuramba uye kushanda kwekuvaka kwedhaka. Izvi zvakanakisa zvivakwa zvinoita kuti HPMC ive imwe yeakajairika musanganiswa mudhaka uye zvimwe zvekuvaka.
2. Kuomesa nzira yedhaka
Kuomesa kwedhaka kunowanzo sanganisira zvikamu zviviri: evaporation yemvura uye simende hydration reaction. Cement hydration ndiyo yekutanga nzira yekurapa dhaka, asi kubuda kwemvura panguva yekuomeswa kunoitawo basa rakakosha. Kunyorova kwesamende dhaka kunoda kubviswa zvishoma nezvishoma kuburikidza neiyo evaporation process, uye kumhanya kweichi chiitiko kunobata zvakananga kunaka, kusimba uye kunotevera kwekuvaka kwechigadzirwa chakapedzwa mushure mekuvaka.
3. Mhedzisiro yeHPMC padhaka rekuomesa nekukurumidza
Kufurira kweAnxinCel®HPMC admixture pakukurumidza kuoma kwedhaka kunonyanya kuratidzwa muzvikamu zviviri: kuchengetwa kwemvura uye kutonga kwemvura.
(1) Kunatsiridza kuchengetedza kwemvura uye kunonoka kuomesa
HPMC ine yakasimba hydration uye mvura kuchengetedza zvivakwa. Inogona kuumba hydration film mudhaka kuderedza kukurumidza kubuda kwemvura. Izvo zviri nani kuchengetedza mvura kwedhaka, inononoka kuoma nekuti mvura inochengetwa mudhaka kwenguva yakareba. Naizvozvo, mushure mekuwedzera HPMC, iyo evaporation process yemvura mudhaka ichadzivirirwa kune imwe nhanho, zvichikonzera kwenguva yakareba yekuomesa.
Kunyangwe kunonoka kudonha kwemvura kunogona kurebesa nguva yekuomeswa kwedhaka, iyi inononoka kuomeswa nzira inobatsira, kunyanya panguva yekuvaka, sezvo inogona kudzivirira zvinobudirira matambudziko akadai sekuoma kwepasi uye kuputika kwedhaka uye kuve nechokwadi chekuvaka kunaka.
(2) Kugadziriswa kwe simenti hydration process
Basa reHPMC mudhaka resimende harigumiri pakuvandudza kuchengetwa kwemvura. Inogonawo kugadzirisa hydration process ye simenti. Nekuchinja rheology yedhaka, HPMC inogona kukanganisa dhigirii rekubatana pakati pemasimende uye hunyoro, nekudaro ichikanganisa hydration rate yesimende. Mune zvimwe zviitiko, kuwedzera kweAnxinCel®HPMC kunogona kunonoka zvishoma hydration process ye simenti, zvichiita kuti dhaka ripore zvishoma. Ichi chiitiko chinowanzo kuwanikwa nekugadzirisa simenti particle size kugovera uye kusangana kwemasimende zvimedu, nekudaro zvichikanganisa kukurumidza kuoma.
(3) Kuchinja kune humidity yezvakatipoteredza
HPMC inogona kunatsiridza evaporation kuramba kwedhaka, zvichiita kuti dhaka riwedzere kuchinjika kune hunyoro hwezvakatipoteredza. Munzvimbo yakaoma, iyo mvura yekuchengetedza mhedzisiro yeHPMC inonyanya kukosha. Inogona kunyatso kunonoka kurasikirwa kwehunyoro hwepamusoro uye kuderedza kutsemuka kwepamusoro kunokonzerwa nekunyanya kuoma nekukurumidza. Izvi zvinonyanya kukosha munzvimbo dzinopisa kana dzakaoma. Naizvozvo, HPMC haingogadzirisi chiyero chekubuda kwemvura, asi zvakare inosimudzira kuchinjika kwedhaka kune yekunze nharaunda, zvisina kunanga kuwedzera nguva yekuomesa.
4. Zvinhu zvinokanganisa kuomesa nekukurumidza
Pamusoro pekuwedzera kweHPMC musanganiswa, kumhanya kwekuomesa kwedhaka kunokanganiswawo nezvimwe zvinhu zvakawanda, zvinosanganisira:
Mortar ratio: Huyero hwesimende kumvura uye reshiyo yefine aggregate kune coarse aggregate inokanganisa hunyoro hwedhaka nekudaro kumhanya kwekuomesa.
Mamiriro ezvakatipoteredza: Tembiricha, humidity uye kutenderera kwemhepo mamiriro ezvinhu akakosha anokanganisa kukurumidza kuoma kwedhaka. Munzvimbo ine tembiricha yepamusoro uye hunyoro hwakaderera, mvura inoputika nekukurumidza, uye zvinopesana.
Mortar thickness: Ukobvu hwedhaka hunokanganisa zvakananga kuoma kwayo. Makobvu screeds kazhinji anotora nguva yakareba kuti aome zvachose.
5. Mafungiro anoshanda anoshanda
Mukushandisa zvinoshanda, mainjiniya ekuvaka nevashandi vekuvaka vanowanzoda kuenzanisa kumhanya kwekuomesa kwedhaka nekushanda kwekuvaka. Semusanganiswa, HPMC inogona kunonoka kuomesa, asi chimiro ichi chinobatsira zvakanyanya munzvimbo dzinofanirwa kuchengetedzwa nguva yekuvaka. Semuenzaniso, munzvimbo dzekupisa, kuomesa mhepo, HPMC inogona kudzivirira kuoma kwepasi uye kuputika, kuve nechokwadi chekushanda kuri nani uye nguva yakareba yekuvhura yedhaka panguva yekuvaka.
Nekudaro, mune zvimwe zviitiko, senge mapurojekiti anoda kuomeswa nekukurumidza kwedhaka, zvingave zvakakosha kudzora huwandu hweHPMCakawedzera kana kusarudza fomula isina HPMC yekumhanyisa kuomesa.
Semusanganiswa wedhaka, AnxinCel® HPMC inogona kunyatso kuvandudza kuchengetwa kwemvura kwedhaka, kuwedzera nguva yekuvhura, uye kukanganisa zvisina kunanga kumhanya kwedhaka. Mushure mekuwedzera HPMC, kumhanya kwekuomesa kwedhaka kunowanzo kuderera, izvo zvine mhedzisiro yakanaka pakudzivirira matambudziko akadai sekupwanya kwakaoma panguva yekuvaka. Nekudaro, shanduko mukuwomesa kumhanya inokanganiswawo nezvinhu zvakasiyana senge dhaka reshiyo uye mamiriro ezvakatipoteredza. Naizvozvo, mumashandisirwo anoshanda, huwandu hweHPMC hunofanirwa kusarudzwa zvinoenderana nemamiriro chaiwo kuti uwane yakanakisa kuvaka maitiro.
Nguva yekutumira: Jan-10-2025