Hydroxypropyl methylcellulose (HPMC) inoshandiswa zvakanyanya kemikari yekuwedzera mukunyorova musanganiswa wedhaka kugadzira.Iyi cellulose ether compound ine yakakosha zvivakwa zvinovandudza mashandiro, kusimba uye kushanda kwematokari.Basa guru reHPMC nderekuwedzera kuchengetwa kwemvura uye kunamatira, nekudaro kunowedzera kugona kwekubatanidza kwedhaka.
1. Kuvandudza kushanda
Kushanda kwe wet mix mortar zvinoreva kugona kwayo kubata nekudirwa zviri nyore panguva yekuvaka.Ichi chinhu chakakosha chekuona kuti dhaka iri nyore kusanganisa, kudira uye kuumba.HPMC inoshanda seplasticizer nekudaro ichipa huwandu hwakafanira hwekuchengetedza mvura uye viscosity kune dhaka.Nekuwedzerwa kweHPMC, dhaka rinowedzera viscous, richiibvumira kunamatira uye kubatanidza zvirinani.
Mhedzisiro yeHPMC pakushanda kwedhaka inogona kuverengerwa nekugona kwayo kukora uye kushandura rheology yemusanganiswa.Nekuwedzera viscosity yemusanganiswa, HPMC inogonesa kuyerera zvirinani uye inoderedza chero maitiro ekuparadzanisa kana kubuda ropa.Yakavandudzwa rheology yemusanganiswa inobatsirawo kuderedza viscosity yedhaka, zvichiita kuti zvive nyore kushanda nayo.
2. Wedzera kuchengetwa kwemvura
Kuchengetedzwa kwemvura ndechimwe chezvinhu zvakakosha zve wet mix mortar.Rinoreva kugona kwedhaka kuchengetedza mvura kwenguva yakareba.Iyo dhaka inoda kuchengetwa kwemvura yakakwana kuti iwedzere simba uye kudzivirira shrinkage uye kuputika panguva yekuoma.
HPMC inonatsiridza kuchengetwa kwemvura kwemvura yakasanganiswa dhaka nekugadzirisa kunyura uye kuburitswa kwemvura mumusanganiswa.Inoumba firimu yakaonda yakakomberedza simenti particles, ichidzivirira kuti irege kutora mvura yakawandisa uye nokudaro kuchengetedza kuwirirana kwemusanganiswa.Iyo firimu inobatsirawo kunonoka kubuda kwemvura mumusanganiswa, nokudaro kuwedzera nguva yekushanda yedhaka.
3. Wedzera kunamatira
Kunamatira ndiko kugona kwedhaka kusungira uye kunamatira kune substrate.Ichi chinhu chakakosha pakuita kuti dhaka rirambe riripo uye hariparadzanise kubva pairi rinoiswa.HPMC inonatsiridza kunamatira kwekunyorova musanganiswa dhaka nekuwedzera kubatana kwemusanganiswa, nekudaro ichiwedzera kugona kwayo kwekubatana.
HPMC inowana izvi nekugadzira firimu rakatetepa rakatenderedza masimende masimende, ayo anobatsira kuvandudza simba remakanika redhaka.Iyo firimu inoshandawo sechivharo, ichidzivirira dhaka kubva pakuparadzana kubva kune substrate.Kuvandudzwa kwedhaka kunamatira kunovandudza kusimba uye kuvimbika kwekuvaka.
Mukupedzisa
Kuwedzerwa kweHPMC kune wet musanganiswa dhaka kune akati wandei anobatsira pakuita, kusimba uye kushanda kwemusanganiswa.Inovandudza kuchengetedza kwemvura, kushanda uye kunamatira, zvichiita kuti dhaka riwedzere kuwirirana, nyore kubata uye rakavimbika.Izvi zvinhu zvinoita kuti HPMC ive yakakosha kemikari yekuwedzera mukunyorova musanganiswa wedhaka kugadzirwa.
Nguva yekutumira: Sep-15-2023