Mhando dzeMethyl Cellulose Ether
A. Hydroxypropyl methylcellulose (HPMC) inonyanya kugadzirwa nedonje yakacheneswa zvakanyanya seyakagadzirwa, iyo inonatswa etherified pasi pemamiriro ealkaline.
B. Hydroxyethyl methyl cellulose (HEMC), isiri-ionic cellulose ether, ipfu chena, isina kunhuwa uye isina kunaka.
C. Hydroxyethylcellulose (HEC) isiri-ionic surfactant, chena muchimiro, isinganhuhwi uye isinganakidze uye iri nyore-kuyerera poda.
Izvo zviri pamusoro ndezvisiri-ionic cellulose ethers, uye ionic cellulose ethers (senge carboxymethyl cellulose (CMC)).
Panguva yekushandiswa kwevhu rakaoma dhaka, nokuti ionic cellulose (CMC) haina kugadzikana muhupo hwe calcium ions, haiwanzoshandiswa mune inorganic gelling systems nesamende uye slaked lime se cementing zvinhu. Mune dzimwe nzvimbo muChina, Mamwe emukati emadziro putties akagadziridzwa ane yakagadziridzwa starch sechinhu chikuru simende uye Shuangfei poda semuzadziri anoshandisa CMC seyakakora, asi nekuti chigadzirwa ichi chinowanzoita mildew uye hachidzivirire mvura, chinobviswa zvishoma nezvishoma. nepamusika .
Parizvino, anonyanya kushandiswa cellulose ether mumidziyo yakaoma-yakavhenganiswa yedhaka inonziwo hydroxypropyl methylcellulose ether (HPMC) uye hydroxyethyl methylcellulose ether (HEMC). Kune zvigadzirwa zvine mashandisirwo akasiyana, chiyero che cellulose ether chakasiyanawo, chakaderera se0.02% senge dhaka remadziro kusvika 0.1%. Zvakadai sekupurasita dhaka, iyo yakakwira inogona kubva pa 0.3% kusvika 0.7% senge tile inonamira.
Zvivakwa zveCellulose Ether
❶ Cellulose ether ine mvura inochengetedza zvakanaka mudhaka. Basa rayo rekuchengetedza mvura rinogona kudzivirira iyo substrate kuti irege kutora mvura yakawandisa nekukurumidza uye inotadzisa kubuda kwemvura, kuitira kuti ive nechokwadi chekuti mvura yakakwana kana simende ichinyudzwa. Inogona kudzivirira zvinobudirira dhaka kubva pakuoma uye kuputika nekuda kwekukurumidza kurasikirwa kwemvura, kuitira kuti dhaka rive nenguva yakareba yekuvaka.
Kazhinji kutaura, kuchengetwa kwemvura ye simenti slurry kunowedzera nekuwedzera kwemukati we cellulose ether. Iyo yakakura viscosity yeakawedzera cellulose ether, zviri nani kuchengetedza mvura.
❷ Iko kukora mhedzisiro ye cellulose ether inogona kudzora dhaka kuti iwane yakanakisa kuenderana, kuvandudza kubatanidzwa kwedhaka, kuwana anti-sag mhedzisiro, kuvandudza kushanda, uye kuwedzera zvakanyanya kushanda kwekuvaka.
❸ Cellulose ether inogona kuvandudza zvakanyanya kunyorova kwedhaka rakanyorova, kuve nechokwadi chekuti dhaka rakanyorova rine hukama hwakanaka hwekubatanidza pane akasiyana substrates.
❹ Cellulose ether inonatsiridza zvakanyanya kusimba kwechisungo chedhaka, uye inogona kuve nechokwadi chenguva yakakwana yemvura yekunyatso hydrate simende kunyangwe munzvimbo yekushisa kwepamusoro, nekudaro kuve nechokwadi chekubatana kuri nani kwedhaka.
Munda wekushandisa we cellulose ether
Cement-based:
⑴, putty, ⑵, dhaka rekupurasita, ⑶, dhaka risingapinde mvura, ⑷, caulking agent, ⑸, plastering dhaka, ⑹, pfapfaidza dhaka, ⑺, dhaka rekushongedza, ⑻, mataira anonamira, ⑼, simende inodzika inodzika, ⑽ yepasi pemvura kongiri ⑾, masonry dhaka, ⑿, kugadzirisa dhaka, ⒀, thermal insulation slurry, ⒁, EIFS thermal insulation bonding mortar, ⒂, isiri-shrinkage grouting zvinhu.
Zvimwe zvekuvaka:
⑴, dhaka risina mvura, ⑵, dhaka rine zvikamu zviviri.
Nekuvandudzwa kwedhaka rakaoma-musanganiswa, cellulose ether yave yakakosha sement mortar admixture. Nekudaro, kune akawanda emhando uye zvirevo zve cellulose ether, uye mhando pakati pemabhechi ichiri kuchinja. Paunenge uchiishandisa, unofanirwa kuterera kune:
1. Maitiro ekushanda kwedhaka yakagadziridzwa anonyatsoenderana nekukura kwe viscosity ye cellulose ether. Kunyangwe zvigadzirwa zvine yakakwira zita viscosity zvine yakakwira yekupedzisira viscosity, nekuda kwekunonoka kupera, zvinotora nguva yakareba kuti uwane iyo yekupedzisira viscosity; nekuwedzera, Iyo cellulose ether ine coarser particles inotora nguva yakareba kuti iwane yekupedzisira viscosity, saka chigadzirwa chine viscosity yakakwirira haifaniri kunge iine zviri nani kushanda maitiro.
2. Nekuda kwekuganhurwa kwedhigirii repolymerization ye cellulose ether raw materials, iyo yakanyanya viscosity ye cellulose ether inogumirawo.
Nguva yekutumira: Feb-02-2023