Dhaka rakasanganiswa nemvura isimbi, musanganiswa wakatsetseka, musanganiswa, mvura nezvimwe zvinhu zvakasiyana-siyana zvinosarudzwa zvichienderana nekushanda. Zvichienderana nechiyero chakati, mushure mekuyerwa nekusanganiswa panzvimbo yekusanganisa, rinotakurwa kuenda kunzvimbo yekushandisa nemota yekusanganisa, roiswa muchina wekugadzira. Musanganiswa wakanyorova unochengetwa mumudziyo uye unoshandiswa mukati menguva yakatarwa.
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.
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.
Kana huwandu hwe HPMC ye cellulose ether inowedzerwa mumota yakasanganiswa nemvura hwakawanda, zvinoita kuti kuchengetedza mvura kurambe kuri nani, uye viscosity yacho ikakwira, zvinoita kuti kuchengetedza mvura kurambe kuri nani. Kupfava zvakare chiratidzo chakakosha chekushanda kwe hydroxypropyl methylcellulose.
Kupfava kwehydroxypropyl methylcellulose kunewo simba pakuchengetedza mvura. Kazhinji, kune hydroxypropyl methylcellulose ine viscosity yakafanana asi kupfava kwakasiyana, kupfava kunowedzerawo kupfava. Mhedzisiro yekuchengetedza mvura iri nani.
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: Kurume-31-2023