Mhedzisiro yehydroxypropyl methylcellulose pane zvimiro zvekongiri zvinhu!

Hydroxypropyl methylcellulose (HPMC) ine yakanakisa kukora zvivakwa uye inogona kushandiswa seyakanakisa anti-dispersant yekongiri.Munguva yakapfuura, chinhu ichi chaive chigadzirwa chemakemikari chaive chishoma muChina, uye mutengo wayo wakakwira.Nekuda kwezvikonzero zvakasiyana-siyana, kushandiswa kwayo muChishandiso muindasitiri yekuvaka yenyika yangu, mumakore achangopfuura, nekuenderera mberi kwekuvandudza tekinoroji yekumisa madziro, kushomeka kwekufambira mberi muhunyanzvi hwekugadzira cellulose, uye hunhu hwakanakisa hweHPMC mukuru uye kufarira, HPMC. yakashandiswa zvakanyanya muindasitiri yekuvaka.

Imwe: Anti-kupararira bvunzo:

Dispersion resistance ndiyo yakakosha tekinoroji index kuyera kunaka kwekuparadzana.HPMC musanganiswa wepolymer inonyungudika mumvura, inozivikanwawo seresin inonyungudika nemvura kana polima inonyungudika nemvura.Iyo inowedzera musanganiswa kuronga nekuwedzera viscosity nemvura.Iyo pro-Mvura-yakavakirwa polymer zvinhu zvinogona kunyungudika mumvura kugadzira mhinduro kana dispersions.Ongororo dzinoratidza kuti kana huwandu hwenaphthalene-based high-efficiency water reducers huchiwedzera, kuwedzerwa kwezvidzikisi zvemvura kunoderedza kupararira kwekudzivirira kwesementi yakasanganiswa.Izvi zvinodaro nekuti iyo naphthalene-yakavakirwa yakakwirira-inoshanda yekuderedza mvura ndeye surfactant.Kana iyo inodzikisira mvura yawedzerwa kune dhaka, iyo inoderedza mvura inonangidzirwa pamusoro pezvikamu zvesimende kuitira kuti pamusoro pezvikamu zvesimende zvive nechaji yakafanana.Iyi yemagetsi repulsion inoita sement particles Iyo yakagadzirwa flocculation structure inobviswa, uye mvura iri muchimiro inosunungurwa, izvo zvichaita kuti kurasikirwa kwechikamu chesimende.Panguva imwecheteyo, inowanikwa kuti nekuwedzera kweiyo HPMC yemukati, kupararira kuramba kweiyo ichangobva kusanganiswa simende dhaka iri kuita nani uye nani.

Zviviri: simba hunhu hwekongiri:

(1) Kuwedzerwa kwehydroxypropyl methylcellulose kune pachena kunonoka mhedzisiro pamusanganiswa wedhaka.Nekuwedzera kwehuwandu hweHPMC, nguva yekudzosa yedhaka inowedzerwa zvakatevedzana.Pasi pehuwandu hwakafanana hweHPMC, kuumbwa kwepasi pemvura Nguva yekugadzika kwedhaka mumhepo yakareba kudarika iyo iri mumhepo, iyo inobatsira pakupomba kwekongiri yemvura.

(2) Iyo ichangobva kusanganiswa simende dhaka yakasanganiswa nehydroxypropyl methylcellulose ine yakanaka yakabatana zvivakwa uye inenge isina kubuda ropa.

(3) Huwandu hwehydroxypropyl methylcellulose uye kudiwa kwemvura kwedhaka kwakadzikira kutanga ndokuzowedzera zviri pachena.

(4) Kubatanidzwa kwemvura inoderedza mumiririri inovandudza dambudziko rekuwedzera kwemvura kudiwa kwedhaka, asi dosi rayo rinofanira kudzorwa zvine mutsindo, zvikasadaro pasi pemvura anti-kupararira kweichangobva kusanganiswa simende dhaka dzimwe nguva inoderedzwa.

(5) Kuwedzera hydroxypropyl methylcellulose pasi pemvura isiri-dispersible kongiri admixture, kudzora dosi kunobatsira kune simba.Muedzo unoratidza kuti chiyero chesimba rekongiri yakaumbwa nemvura uye mhepo yakaumbwa kongiri ndeye 84.8%, uye mhedzisiro yacho inofananidzwa zvakanyanya.