Ma ether estarchzvinhu zvinonyungudika mumvura zvinogadzirwa kubva kustarch yechisikigo kuburikidza nemakemikari kana shanduko yemuviri. Zvinonyanya kushandiswa mukuvaka sezvinhu zvinowedzerwa kuchengetedza mvura, kukora, kuvandudza kushanda, uye kuwedzera hunhu hwe rheological hwezvinhu. Zvinowanzo torwa kubva kustarch yezvirimwa zvakaita sechibage, mbatatisi, uye cassava. Mapoka e ether anounzwa kuburikidza ne etherification reaction, zvichichinja kunyungudika kwavo, kugadzikana, uye kukora, zvichivagonesa kushanda munzvimbo dzine alkaline uye masisitimu akaomarara.
Muindasitiri yekuvaka, starch ethers dzinowanzo shandiswa mumadhaka akasanganiswa nedry-mix akadai sematiles, upfu hwemadziro emukati nekunze, madhaka ekudzivirira kupisa, uye zvinhu zvinozvienzanisa negypsum kana simende. Kushandiswa kwazvo kunowanzo kuve kwakaderera, kazhinji pakati pe0.02% ne0.1%, asi zvinogona kuvandudza kushanda zvakanaka. Nzira huru dzekushanda dzinosanganisira:
Kugadzirisa kuenzana uye rheology: Mastarch ethers anozara mumvura kuti agadzire mhinduro ine viscous. Kana akashandiswa pamwe chete nezvimwe zvinosimbisa (senge hydroxypropyl methylcellulose (HPMC) uye hydroxyethyl methylcellulose (MHEC), anogona kuwedzera kukosha kwegoho uye thixotropy yemortar, zvichiita kuti ifambe zvakanaka panguva yekushandiswa uye isanyanye kudzika mushure mekumira.
Kuvandudza kuchengetwa kwemvura: Mamorekuru estarch akagadziriswa anopfava zvikuru, anosveta uye anovhara mumvura, anoderedza kusveta kwemvura uye kubuda kwemvura kubva pasi pevhu, zvichiita kuti simende kana gypsum zvinyorove zvakakwana, uye zvinovandudza kusimba nekunamatira.
Kudzivirira kudonha nekubuda ropa: Muzvinamathero zvemataira kana kushandiswa kwakamira, starch ethers dzinogona kuvandudza hunhu hwemortar hunodzivirira kudonha. Muzvinhu zvinozvienzanisa kana kuti zvinotetepa, zvinogona kuderedza kubuda ropa uye kuona kuti pamusoro payo pakanaka.
Kuvandudza kunzwa kwekushandisa: Zvinoita kuti kukwenya nekupararira zvive nyore, zvichideredza "kunamatira kwebanga," zvichivandudza kushanda zvakanaka kwekushandisa uye kunaka kwechigadzirwa chekupedzisira.
Mastarch ether anowanzo shandiswa pamwe chete nemacellulose ethers (HPMC, HEMC, uye MHEC) mumafomura. MaCellulose ethers anopa hunhu hwekuchengetedza mvura uye kukora, nepo starch ethers dzichigadzirisa thixotropy uye kugadzikana kwemortar, zvichiita kuti ishande zvakanaka. Semuenzaniso, mumafomura e tile adhesive, huwandu hwakakodzera hwe starch ether hunogona kuderedza stringiness yakawandisa inokonzerwa ne high-viscosity cellulose ethers, zvichiita kuti mortar ive nyore kuisa. Mumaputty powders, inogona kuwedzera kutsetseka uye kuderedza njodzi yekupwanyika nekutsemuka.
Mukushandiswa kwekuvaka, starch ethers inopa zvinotevera zvakanakira mashandiro:
Hushamwari kune nharaunda: Dzakagadzirwa nestarch yezvirimwa, dzinogona kuora uye hadzina simba rakawanda kune nharaunda.
Kushanda zvakanaka kwemari: Kushandiswa kushoma kunoita kuti pave nekuvandudzwa kukuru, zvichideredza kuvimba nezvinhu zvinodhura.
Kugona kuchinjika mukugadzira: Yakakodzera mamortar akagadzirwa nesimende, gypsum, uye mixed-base, uye inoenderana nezvimwe zvinhu zvakasiyana-siyana.
Zvakasiyanastarch etherMhando dzezvinhu uye nzira dzekugadzirisa zvinhu zvinoguma nekuchinja kwakasiyana-siyana, kugona kwayo kukora, kuramba kwealkali, uye kugadzikana. Nokudaro, mukushandisa kwakakodzera, zvakakosha kusarudza mhando yakakodzera zvichienderana nehurongwa hwekugadzira, nzvimbo yekuvaka, uye mashandiro ayo, uye kuona chiyero chakakodzera kuburikidza nekuyedza. Starch ether chinhu chinowedzera "muyero mudiki, mhedzisiro huru" muzvinhu zvekuvaka. Chinovandudza zvakanyanya rheology yemortar, kuchengetedza mvura, uye kushanda kwayo, zvichiwedzera zvakanyanya kushanda kwekuvaka uye kunaka kwechigadzirwa chakapedzwa. Icho chinhu chinowedzera chinoshanda chakakosha muhurongwa hwemazuva ano hwemortar dry-mix.
Nguva yekutumira: Nyamavhuvhu-11-2025