Starch ether inonyanya kushandiswa mudura rekuvaka, izvo zvinogona kukanganisa kuenderana kwedura zvichibva pagypsum, simende nelime, uye zvinoshandura kuvakwa nekusagadzikana kwedura. Starch ethers dzinowanzo shandiswa pamwe chete ne non-modified uye modified cellulose ethers. Yakakodzera kune ese ari maviri nealkaline systems, uye inoenderana nezvakawanda zvinowedzera muzvigadzirwa zvegypsum nesimende (zvakadai se surfactants, MC, starch ne polyvinyl acetate nedzimwe polymers dzinonyungudika mumvura).
Zvinhu zvikuru:
(1) Starch ether inowanzo shandiswa pamwe chete nemethyl cellulose ether, izvo zvinoratidza kuti zvinhu zviviri izvi zvinoshanda pamwe chete. Kuwedzera starch ether yakakodzera kune methyl cellulose ether kunogona kuvandudza zvakanyanya kuramba kwe sag uye kuramba kutsvedza kwemortar, zvichipa goho rakakura.
(2) Kuwedzera huwandu hwakakodzera hwe starch ether muhari ine methyl cellulose ether kunogona kuwedzera kuenderana kwehari uye kuwedzera kuyerera, zvichiita kuti kuvaka kuve kwakapfava uye kukwenya kuve kwakapfava.
(3) Kuwedzera huwandu hwakakodzera hwe starch ether muhari ine methyl cellulose ether kunogona kuwedzera kuchengetedza mvura muhari uye kuwedzera nguva yekuvhura.
(4) Starch ether istarch ether yakagadziriswa nemakemikari inonyungudika mumvura, inoenderana nezvimwe zvinowedzera mudry powder mortar, inoshandiswa zvakanyanya muma tile glue, repair mortar, plaster plaster, interior and exterior wall putty, gypsum-based embedded Joints and filling materials, interface agents, masonry mortar.
Hunhu hwe starch ether hunonyanya kuwanikwa mu: (a) kuvandudza kuramba kwemvura; (b) kuvandudza kushanda; (c) kuvandudza mwero wekuchengetedza mvura mudhaka.
Rudzi rwekushandiswa:
Starch ether yakakodzera mhando dzese dze (simende, gypsum, lime-calcium) putty yemukati nekunze yemadziro, uye mhando dzese dzedhaka remadziro nedhaka rekuisa plaster.
Inogona kushandiswa sekusanganisa zvigadzirwa zvesimende, zvigadzirwa zvegypsum uye zvigadzirwa zve lime-calcium. Starch ether inoenderana zvakanaka nezvimwe zvekuvaka uye zvinosanganiswa; inonyanya kukodzera mumisanganiswa yakaoma yekuvaka senge mortar, adhesives, plastering uye rolling materials. Starch ethers uye methyl cellulose ethers (Tylose MC grades) zvinoshandiswa pamwe chete mumisanganiswa yakaoma yekuvaka kuti iwedzere kukora, chimiro chakasimba, kuramba kudonha uye nyore kubata. Viscosity yemortars, adhesives, plasters uye roll renders ine methyl cellulose ethers yakakwira inogona kuderedzwa nekuwedzera starch ethers.
Nguva yekutumira: Chikumi-13-2023