Hydroxypropyl methylcellulose ether (HPMC) yave chinhu chakakosha chekuwedzera kune simende-based dhaka nekuda kwehunhu hwayo hwakanaka uye zvakanakira.HPMC imodified cellulose ether inowanikwa nekurapa cellulose nepropylene oxide uye methyl chloride.Iyo chena kana isina-chena poda inonyungudika mumvura kuti iite yakajeka viscous mhinduro.
Kuwedzerwa kweHPMC kune simende-based mortars kune zvakanakira zvekuvandudza kushanda, kuchengetedza mvura, kuisa nguva uye kuwedzera simba.Inovandudzawo kunamatira kwevhu kune substrate uye inoderedza kuputika.HPMC inoshamwaridzana zvakatipoteredza, yakachengeteka kushandisa uye isina chepfu.
Vandudza kushanda
Kuvapo kweHPMC mumasimende-based mortars kunowedzera kuwirirana kwemusanganiswa, zvichiita kuti zvive nyore kuvaka uye kupararira.Iyo yakakwirira yekuchengetedza mvura yeHPMC inoita kuti dhaka rirambe richishanda kwenguva yakareba.Izvi zvinonyanya kukosha mumamiriro okunze anopisa uye akaoma apo nzira yekuvaka inogona kuva yakaoma.
Kuchengetedza mvura
HPMC inobatsira kuchengetedza hunyoro mumusanganiswa kwenguva yakareba.Izvi zvakakosha nekuti mvura chinhu chakakosha mukuomesa simende uye kuona kusimba kwayo nekusimba kwayo.Kuwedzera kwekubata kwemvura kunonyanya kubatsira munzvimbo dzine hunyoro hushoma kana kupisa kwakanyanya, uko mvura mudhaka inogona kubuda nekukurumidza.
nguva yakatarwa
HPMC inogadzirisa nguva yekumisikidza simende-based mortar nekudzora hydration rate yesimende.Izvi zvinoguma nemaawa akawanda ekushanda, zvichipa vashandi nguva yakakwana yekunyorera uye kugadzirisa dhaka risati ragadzika.Inogonesawo kuita kwakawanda kunoenderana munzvimbo dzakasiyana siyana.
Kuwedzera kusimba
Kuwedzerwa kweHPMC kunokurudzira kuumbwa kwepamusoro-soro hydrate layer, nekudaro kunowedzera kusimba uye simba resimende-based mortar.Izvi zvinokonzerwa nekuwedzera kukora kwechitubu chakaumbwa chakatenderedza simenti clinker zvidimbu.Chimiro chakaumbwa muchirongwa ichi chakanyanya kugadzikana, nekudaro chinowedzera simba rekutakura mutoro wedhaka.
Kuvandudza kunamatira
Kuvapo kweHPMC mumadhaka-samende inovandudza kunamatira pakati pedhaka uye substrate.Izvi zvinokonzerwa nekugona kweHPMC kubatana nesamende uye substrate kugadzira chisungo chakasimba.Somugumisiro, mukana wevhu rinoputika kana kuparadzanisa kubva kune substrate rakanyanya kuderedzwa.
Deredza kuputika
Kushandisa HPMC mumadhaka esimende-based kunowedzera kushanduka uye kunoderedza mukana wekutsemuka.Izvi zvinokonzerwa nekuumbwa kwepamusoro-soro hydrate layer inobvumira dhaka kuti rirambe kuputika nekutora kushushikana uye kuwedzera kana kubvumirana maererano.HPMC zvakare inoderedza shrinkage, chimwe chikonzero chakajairika chekutsemuka mumadhaka esimende.
HPMC ishamwari yezvakatipoteredza uye isiri-chepfu yekuwedzera iyo inoita basa rakakosha mukusimudzira kushanda kwemasimende-based madhaka.Kubatsira kwayo kunodarika mutengo wayo, uye kushandiswa kwayo kuri kuwedzera kukurumbira muindasitiri yekuvaka.Kugona kwayo kugadzirisa kushanda, kuchengetedza mvura, kuisa nguva, kuwedzera simba, kunatsiridza kunamatira uye kuderedza kuputika kunoita kuti ive chikamu chakakosha chemaitiro ekuvaka emazuva ano.
Nguva yekutumira: Sep-20-2023