Muchikamu chedhaka reupfu hwakaoma,ether ye cellulosechinhu chakakosha chine huwandu hushoma hwekuwedzera, asi chinogona kuvandudza zvakanyanya mashandiro ekusanganisa nekuvaka kwedhaka. Kuti zvive nyore, hunhu hwese hwekusanganisa hwakanyorova hwedhaka hunogona kuonekwa nemaziso asina kusimba hunowanikwa ne cellulose ether. I cellulose derivative inowanikwa nekushandisa cellulose kubva muhuni nedonje, ichiita zve caustic soda, uye yozopiswa ne etherifying agent.
Mhando dze ether dze cellulose
A. Hydroxypropyl methyl cellulose (HPMC), iyo inonyanya kugadzirwa nedonje rakanatswa rakachena kwazvo sezvinhu zvisina kugadzirwa, inopiswa zvakanyanya kana paine mamiriro ealkaline.
B. Hydroxyethyl methylcellulose (HEMC), iyo isiri ionic cellulose ether, ine chitarisiko cheupfu huchena, haina hwema uye haina kunaka.
C. Hydroxyethyl cellulose (HEC), chinhu chisiri cheionic surfactant, chitarisiko chechena, chisina hwema, chisina kunaka uye upfu huri nyore kuyerera.
Zviri pamusoro apa ndee non-ionic cellulose ethers, uye ionic cellulose ethers (dzakadai secarboxymethyl cellulose CMC).
Pakushandisa dry powder mortar, nekuti ionic cellulose (CMC) haina kugadzikana kana paine calcium ions, haiwanzo shandiswa muma inorganic gelling systems ane simende neslaked lime se cementing materials. Mune dzimwe nzvimbo muChina, mamwe ma interior wall putties akagadziriswa ne modified starch se main cementing material uye Shuangfei powder se filler anoshandisa CMC se thickener. Zvisinei, nekuti chigadzirwa ichi chinowanzobatwa ne mildew uye hachidzivirirwe nemvura, chinobviswa zvishoma nezvishoma nemusika. Parizvino, cellulose ether inonyanya kushandiswa muChina iHPMC.
Cellulose ether inonyanya kushandiswa semushonga wekuchengetedza mvura uye semuchina wekukora muzvinhu zvakagadzirwa nesimende
Basa rayo rekuchengetedza mvura rinogona kudzivirira substrate kuti isatore mvura yakawandisa uye kudzivirira kubuda kwemvura, kuitira kuti simende ive nemvura yakakwana kana yanyoroveswa. Tora basa rekuisa plaster semuenzaniso. Kana simende yakajairika yakaiswa pamusoro pevhu, substrate yakaoma uye ine maburi inokurumidza kupinza mvura yakawanda kubva muvhu, uye simende slurry layer iri pedyo nehwaro hwevhu icharasikirwa nyore nyore nemvura inodiwa kuti inyoroveswe. , saka haigone chete kugadzira simende gel ine simba rekubatanidza pamusoro pevhu, asi inowanzo kukotama uye kuyerera kwemvura, zvekuti vhuro resimende slurry layer riri nyore kudonha. Kana grout yakashandiswa yakatetepa, zviri nyorewo kugadzira mitswe mugrout yese. Naizvozvo, munguva yakapfuura kushanda kwekuisa plaster pamusoro, mvura inowanzo shandiswa kunyorovesa substrate kutanga, asi basa iri haringodi basa chete uye rinotora nguva, asiwo hunhu hwebasa hwakaoma kudzora.
Kazhinji, kuchengetwa kwemvura kwe slurry yesimende kunowedzera nekuwedzera kwehuwandu hwe cellulose ether. Kana viscosity ye cellulose ether yakawedzerwa yakakura, kuchengetwa kwemvura kuri nani.
Pamusoro pekuchengetwa kwemvura nekukora, cellulose ether inokanganisawo zvimwe zvinhu zvesimbi yesimbi, zvakaita sekudzora, kupinza mhepo, uye kuwedzera simba remabhondi. Cellulose ether inoderedza kugadzika uye kuoma kwesimbi, nokudaro ichiwedzera nguva yekushanda. Saka, dzimwe nguva inoshandiswa sesimbi inosunga.
Nekugadzirwa kwedhaka rakasanganiswa rakaoma,ether ye celluloseyava musanganiswa wakakosha wesimbi yesimbi. Zvisinei, kune mhando dzakawanda uye zvirevo zve cellulose ether, uye mhando pakati pemabhechi ichiri kuchinja-chinja.
Nguva yekutumira: Kubvumbi-25-2024