Dhaka rakasanganiswa nemvura rinoreva zvinhu zvinosimbisa simende, zvinhu zvakasanganiswa zvakanaka, musanganiswa, mvura nezvimwe zvinhu zvakasiyana-siyana zvinosarudzwa zvichienderana nekushanda. Zvichienderana nechiyero chakati, mushure mekuyerwa nekusanganiswa panzvimbo yekusanganisa, rinotakurwa kuenda kunzvimbo yekushandisa nemota yekusanganisa. Chengeta musanganiswa wedhaka mumudziyo wakakosha woushandisa mukati menguva yakatarwa. Nheyo yekushanda kwedhaka rakasanganiswa nemvura yakafanana nedhaka rekutengesa, uye nzvimbo yekusanganisa dhaka rekutengesa inogona kugadzira dhaka rakasanganiswa nemvura panguva imwe chete.
1. Mabhenefiti edhaka rakasanganiswa nemvura
1) Dura rakasanganiswa nemvura rinogona kushandiswa zvakananga mushure mekutakurwa kuenda kunzvimbo yacho pasina kugadziriswa, asi dura rinofanira kuchengetwa mumudziyo usingapindi mhepo;
2) Duri rakasanganiswa nemvura rinogadzirwa mufekitori yehunyanzvi, izvo zvinobatsira kuona nekudzora mhando yeduri;
3) Sarudzo yezvinhu zvakagadzirwa nedhaka rakasanganiswa nemvura yakakura. Dhaka rinogona kunge rakaoma kana rakanyorova, uye harifanirwe kuomeswa, saka mutengo unogona kuderedzwa. Pamusoro pezvo, jecha remuchina wekugadzira rinogadzirwa nedhaka remaindasitiri rakaita semadota anobhururuka uye marara akaoma eindasitiri akadai sedhaka resimbi uye matope emaindasitiri anogona kusanganiswa, izvo zvisingangochengetedze mari chete, asiwo zvinoderedza mutengo wedhaka.
4) Nzvimbo yekuvaka ine nharaunda yakanaka uye kusvibiswa kushoma.
2. Zvakashata zvedhaka rakasanganiswa nemvura
1) Sezvo dhaka rakasanganiswa nemvura rakasanganiswa nemvura mufekitori yekugadzira yehunyanzvi, uye huwandu hwekutakura hwakakura panguva imwe chete, harigone kudzorwa zviri nyore zvichienderana nekufambira mberi kwekuvaka uye kushandiswa. Pamusoro pezvo, dhaka rakasanganiswa nemvura rinofanira kuchengetwa mumudziyo usingapindi mhepo mushure mekutakurwa kuenda kunzvimbo yekuvaka, saka dziva remadota rinofanira kuiswa panzvimbo yacho;
2) Nguva yekufambisa inoganhurirwa nemamiriro emota;
3) Sezvo dhaka rakasanganiswa nemvura richichengetwa panzvimbo yekuvaka kwenguva yakareba, pane zvinodiwa kuti dhaka rishande zvakanaka, nguva yakatarwa uye kugadzikana kwebasa.
Hydroxypropyl methylcellulose inoshandiswa senzira yekuchengetedza mvura uye inodzoreredza simende kuti ikwanise kupombwa. Inoshandiswa senzira yekubatanidza muplaster yekuplaster, inovandudza kupararira uye inowedzera nguva yekushanda. Kushanda kwehydroxypropyl methylcellulose HPMC kuchengetedza mvura kunodzivirira slurry kuti isatsemuke nekuda kwekuoma nekukurumidza mushure mekushandisa, uye inowedzera simba mushure mekuoma. Kuchengetwa kwemvura ibasa rakakosha rehydroxypropyl methylcellulose HPMC, uye zvakare ibasa iro vagadziri vemidziyo yekumba vakanyatso tarisa. Zvinhu zvinokanganisa mhedzisiro yekuchengetedza mvura yemidziyo yekumwa yakasanganiswa zvinosanganisira huwandu hweHPMC yakawedzerwa, viscosity yeHPMC, kupfava kwezvikamu, uye tembiricha yenzvimbo yekushandisa.
Mushure mekunge dhaka rakasanganiswa nemvura raendeswa kunzvimbo yacho, rinofanira kuchengetwa mumudziyo usingapindi mvura. Kana ukasarudza dhaka resimbi, mhedzisiro yekuchengetera ndiyo yakanakisa, asi mari yacho yakanyanya kukwira, izvo zvisingakodzeri kufarirwa uye kushandiswa; unogona kushandisa zvidhinha kana mabhuroko kuvaka dziva remadota, wobva washandisa dhaka risingapindi mvura (muyero wekunyudzwa kwemvura uri pasi pe5%) kupurasita pamusoro, uye mari yacho ndiyo yakaderera. Zvisinei, kupurasita dhaka risingapindi mvura kwakakosha zvikuru, uye mhando yekuvaka kwepurasita risingapindi mvura inofanira kuve nechokwadi. Zvakanakisa kuwedzera hydroxypropyl methylcellulose HPMC kune dhaka kuderedza kutsemuka kwedhaka. Pasi pedhaka remadota rinofanira kunge rakatsetseka kuti rive nyore kuchenesa. Dziva remadota rinofanira kunge riine denga rine nzvimbo yakakwana yekudzivirira kubva kunaya nezuva. Dhaka rinochengetwa mudhaka remadota, uye pamusoro pedhaka remadota rinofanira kuvharwa nejira repurasitiki kuti ive nechokwadi chekuti dhaka racho rakavharwa.
Basa guru rehydroxypropyl methylcellulose HPMC mumota yakasanganiswa nemvura rine zvinhu zvitatu, chimwe ndechekuti inogona kuchengetedza mvura zvakanaka, chimwe ndechekuti ine simba pakuita zvinhu zvakafanana uye thixotropy yemota yakasanganiswa nemvura, uye chechitatu ndechekuti inodyidzana nesimende. Kuchengetedza mvura kwe cellulose ether kunoenderana nekunyudzwa kwemvura kwechigadziko chemota, kuumbwa kwemota, ukobvu hwemota, kudiwa kwemvura kwemota, uye nguva yekuiswa kwezvinhu zvakagadziriswa. Kana hydroxypropyl methylcellulose ikanyanya kujeka, kuchengetedza mvura kunowedzerawo kunaka.
Zvinhu zvinokanganisa kuchengetwa kwemvura kwemortar yakasanganiswa nemvura zvinosanganisira kusimba kwe cellulose ether, huwandu hwekuwedzera, kusimba kwezvikamu uye tembiricha yekushandisa. Kusimba kwe cellulose ether kwakakura, ndiko kuvandudzika kwekuchengetedza mvura. Kusimba chinhu chakakosha pakushanda kweHPMC. Pachigadzirwa chimwe chete, mhedzisiro ye viscosity inoyerwa nenzira dzakasiyana dzakasiyana kwazvo, uye dzimwe dzine musiyano wakapetwa kaviri. Saka, kana uchienzanisa viscosity, inofanira kuitwa pakati penzira dzakafanana dzekuyedza, kusanganisira tembiricha, rotor, nezvimwewo.
Kazhinji, kana viscosity yakakwira, zvinoita kuti mvura irambe ichichengetwa zvakanaka. Zvisinei, kana viscosity yakakwira uye huremu hweHPMC hukakwira, kudzikira kwekunyungudika kwayo kuchaita kuti simba remuto riwedzere uye mashandiro ekuvaka. Kana viscosity yakakwira, zvinoita kuti ganda riwedzere kukora, asi harina kuenzana zvakananga. Kana viscosity yakakwira, ndipo pachava nekusimba kwakanyanya, ndiko kuti, panguva yekuvaka, inoonekwa seinonamatira pa scraper uye ine kunamatira kwakanyanya ku substrate. Asi hazvibatsiri kuwedzera simba remuto wemvura pachayo. Panguva yekuvaka, kushanda kwe anti-sag hakusi pachena. Kusiyana neizvi, imwe modified hydroxypropyl methylcellulose ine viscosity yepakati nepasi ine mashandiro akanaka mukuvandudza simba remuto wemvura.
Mumortar yakasanganiswa nemvura, huwandu hwekuwedzera hwe cellulose ether HPMC hwakaderera zvikuru, asi hunogona kuvandudza zvakanyanya mashandiro emortar yakasanganiswa nemvura, uye chinhu chikuru chinokanganisa mashandiro emortar. Kusarudzwa kwakanaka kwehydroxypropyl methylcellulose chaiyo kune simba guru pakuvandudza mashandiro emortar yakasanganiswa nemvura.
Nguva yekutumira: Kubvumbi-04-2023