introduce
Dry mortar inoshandiswa mumhando dzakasiyana dzekuvaka zvinosanganisira masonry, insulation uye pasi.Mumakore achangopfuura, hydroxypropylmethylcellulose (HPMC) yave bhainda rinowanzoshandiswa mumadhaka akaoma.HPMC i polymer inoshanda zvakasiyana-siyana inogona kuwedzerwa kune yakaoma dhaka musanganiswa kuvandudza kunamatira, kuchengetedza mvura uye kushanda.Ichi chinyorwa chichaongorora mabhenefiti ekushandisa HPMC mudhaka rakaoma uye nei yave sarudzo yekutanga yevaki nemakondirakiti.
Chii chinonzi HPMCs?
Hydroxypropyl methylcellulose ndeye cellulose inotorwa kubva kune yakasikwa polymer zvinhu.HPMC inonyanya kunyungudika mumvura uye inoumba yakajeka viscous mhinduro kana yakasanganiswa nemvura inotonhora.Iyo polymer haina chepfu uye yakachengeteka kushandiswa mukudya nemishonga.HPMC haina kunhuwa, haina kunaka, uye ine yakanakisa kugadzikana kwekupisa.
Kuvandudza kunamatira
Imwe yemabhenefiti makuru ekushandisa HPMC mudhaka rakaoma kugona kwayo kuvandudza kunamatira.Kunama (adhesion) zvinoreva kugona kwedhaka kunamatira pamusoro pairi kupendwa.HPMC inoshandura kushushikana kwepasi kwedhaka, nekudaro ichiwedzera kunamira kwayo kune akasiyana substrates senge kongiri, masonry, huni nesimbi.HPMC inoumba chidziviriro chakatenderedza masimende masimende mudhaka, ichideredza mukana wezvimedu zvinopatsanura kubva kune substrate.
kuchengetedza mvura
HPMC inowedzera simba rekuchengetedza mvura yedhaka, kuwedzera kushanda uye kubvumira vavaki kuti vashandise kwenguva yakareba.Nekudzikamisa zviri mukati memvura yedhaka rakaoma, HPMC inogona kusimudzira yakanyatsoita hydration maitiro, zvichikonzera yakasimba, yakasimba yekupedzisira chigadzirwa.Kuvandudzwa kwekuchengetedza mvura kunopawo kuenderana kuri nani uye kunochengetedza nguva yevavaki nemakondirakiti.
Processability
Kushanda (workability) zvinoreva kureruka uko musanganiswa wakaoma wedhaka unogona kugadzirwa nekuumbwa kuti uenderane nezvinodiwa chaizvo.HPMC inovandudza kushanda kweiyo yakaoma musanganiswa uye inopa kubatana kune dhaka, kufambisa zvirinani, kuvaka kunoenderana.HPMC inoshandura kusawirirana kwepasi kwedhaka, kuwedzera nzvimbo yekubatana pakati pedhaka uye nzvimbo yekuvaka kwayo, nokudaro inovandudza kushanda.Uye zvakare, HPMC inoumba firimu rakatetepa rakatenderedza chidimbu chimwe nechimwe mudhaka, ichidzivirira musanganiswa kubva kune mamiriro ekunze, ichiwedzera kugadzikana kwayo uye kusimba.
kuwedzera kusimba
Iyo yakagadziridzwa yepasi tension yakagadzirwa neHPMC mudhaka rakaoma inoita kuti igadzikane uye inodzivirira dhaka kubva pakutsemuka nekuparara nekufamba kwenguva.Chiito chekubatanidza cheHPMC chinowedzera simba kune chigadzirwa chakapedzwa, chichiita kuti chigare chakasimba uye chisingarare kupfeka uye kubvarura mumamiriro akasiyana ezvakatipoteredza.Iko kugadzikana kunopihwa neHPMC zvakare kunoderedza kupinda kwemvura, nekudaro kuderedza kukura kweforoma uye zvimwe zvisingadiwe.
Kuvandudza kusamira kwemamiriro ekunze
HPMC inobatsira madhaka akaoma kuti ave akasimba zvakanyanya mumamiriro ekunze ekunze, zvinokatyamadza kutsungirira shanduko yetembiricha, mvura uye hunyoro.Inowedzera kusimba kwechisungo chedhaka uye inoderedza kupinza kwemvura mumusanganiswa, iyo inogona kukuvadza zvakanyanya dhaka kana ikaratidzwa kumvura kwenguva yakareba.HPMC inobatsirawo kuderedza carbonation rate yejasi, kuchengetedza chigadzirwa chekupedzisira kubva ku carbon dioxide exposure uye kukonzera kuparara.
HPMC yave chinhu chakajairika mukugadzirwa kwedhaka rakaoma nekuda kwekugona kwayo kugadzirisa kushushikana kwepasi, kunatsiridza kuchengetwa kwemvura nekuvandudza kushanda.Nekuvandudza kunamatira, vavaki uye makondirakiti vanogona kugadzira yakasimba, yakavimbika zvivakwa zvisingazotsemuka uye kupfeka.Mabhenefiti ekuwedzera HPMC kumadhaka akaomeswa akaonekwa kuti anowedzera kusimba, kushanda zvakanaka, kusimba kwemamiriro ekunze uye kugadzikana kwemusanganiswa wakaoma, zvichiita kuti kuiswa kweHPMC mumadhaka kuve sarudzo yakanakisa yekuwana mhando yebasa rekugadzira.Nekushandisa HPMC yakagadziridzwa yakaoma dhaka musanganiswa, vavaki vanogona kugadzira yakakwirira-mhando, isingapinde mvura uye inokurumidza-kuomesa zvinhu zvinoderedza purojekiti yekushandura nguva uye inogonesa nharaunda uye yakachengeteka nzvimbo dzekuvaka.
Nguva yekutumira: Aug-14-2023