Tile adhesive ndeimwe yeakanyanya mashandisirwo eiyo yakaoma-yakasanganiswa dhaka parizvino.Iyi imhando yesimende sechinhu chikuru chesimende uye inowedzerwa neyakagadzikwa aggregates, mvura-inochengetedza maajenti, ekutanga simba maajenti, latex poda uye zvimwe organic kana inorganic additives.musanganiswa.Kazhinji, inongoda kusanganiswa nemvura kana ichishandiswa.Kana ichienzaniswa neyakajairika simende dhaka, inogona kuvandudza zvakanyanya simba rekubatanidza pakati pechinhu chakatarisana neiyo substrate, ine yakanaka kutsvedza kuramba uye ine yakanakisa kudzivirira kwemvura uye kupisa kupisa.Uye mabhenefiti echando-thaw cycle kuramba, anonyanya kushandiswa kunamira mukati mechivako uye ekunze madziro mataira, pasi mataira uye zvimwe zvekushongedza zvinhu, zvinoshandiswa zvakanyanya mukati nekunze madziro, pasi, imba yekugezera, kicheni uye dzimwe nzvimbo dzekushongedza kwekuvaka. inonyanya kushandiswa ceramic tile bonding zvinhu.
Kazhinji kana isu tichitonga kushanda kweadhesive tile, isu hatisi kungoteerera kune yayo yekushanda kwekuita uye anti-sliding kugona, asi zvakare teerera kune yayo mechanical simba uye kuvhura nguva.Cellulose ethermumatairi adhesive haisi kungokanganisa rheological properties ye porcelain adhesive, yakadai sekushanda kwakatsetseka, kunamatira kwebanga, nezvimwewo, asiwo kune simba rakasimba pamagetsi ekugadzirisa tile.Kufurira panguva yekuvhura yekunamatira tile
Apo emulsion poda uye cellulose ether zvinogara mumatope emvura, mamwe data anoratidza kuti emulsion powder ine simba rakasimba rekinetic kuti ribatanidze kune simenti hydration zvigadzirwa, uye cellulose ether inowanikwa yakawanda mu interstitial fluid, iyo inokanganisa dhaka yakawanda viscosity uye nguva yekuisa.Kurwisana kwepamusoro kwe cellulose ether yakakwirira kudarika ye emulsion powder, uye kuwedzera kweselulosi ether kupfumisa pamatope ekugadzirisa kuchave kunobatsira pakuumbwa kwehydrogen bonds pakati penheyo yepamusoro uye cellulose ether.
Mumatope emvura, mvura iri mudhaka inoputika, uye cellulose ether inowedzerwa pamusoro, uye firimu ichaumbwa pamusoro pevhu mukati memaminitsi mashanu, izvo zvinoderedza kuderera kwemhepo kunotevera, sezvo mvura yakawanda ichiitwa. yakabviswa kubva kune yakakora dhaka Chikamu chacho chinotamira kune yakaonda dhaka layer, uye firimu rakaumbwa pakutanga rinopedzwa zvishoma, uye kutama kwemvura kuchaunza mamwe serulosi eteri kupfumisa pamusoro pevhu pevhu.
Nokudaro, kuumbwa kwefirimu ye cellulose ether pamusoro pevhu ine simba guru pakuita kwedhaka.
1) Iyo firimu yakaumbwa yakanyanya kutetepa uye ichanyungudika kaviri, isingakwanisi kudzikamisa kubuda kwemvura uye kuderedza simba.
2) Iyo firimu yakaumbwa yakanyanyisa kukora, kusangana kwe cellulose ether mumatope interstitial fluid yakakwirira, uye viscosity yakakwirira, saka hazvisi nyore kuputsa firimu repamusoro kana matiles akaiswa.
Zvinogona kuonekwa kuti firimu-inogadzira zvinhu zve cellulose ether ine simba guru pane yakazaruka nguva.Mhando ye cellulose ether (HPMC, HEMC, MC, etc.) uye dhigirii ye etherification (inotsiva dhigirii) inobata zvakananga maitiro ekugadzira mafirimu e cellulose ether, uye kuoma uye kuoma kwefirimu.
Pamusoro pekupa zvinhu zvinobatsira zvakataurwa pamusoro apa, cellulose ether inononotsawo hydration kinetics ye simenti.Uku kudzoreredza mhedzisiro kunonyanya kukonzerwa nekushambadza kwe cellulose ether mamorekuru pane akasiyana mamineral phases musimende system iri hydrated, asi kazhinji kutaura, kubvumirana ndeyekuti cellulose ether mamorekuru anonyanya kushambadzirwa pamvura yakaita seCSH uye calcium hydroxide.Pazvigadzirwa zvemakemikari, hazviwanzo kushambadzirwa pane yekutanga mineral phase ye clinker.Mukuwedzera, cellulose ether inoderedza kufamba kweion (Ca2+, SO42-, ...) mumushonga wepore nekuda kwekuwedzera kwe viscosity yepore solution, nokudaro kunowedzera kunonoka hydration process.
Viscosity imwe inokosha parameter, iyo inomiririra maitiro emakemikari e cellulose ether.Sezvambotaurwa pamusoro apa, viscosity inonyanya kukanganisa simba rekuchengetedza mvura uye inewo mhedzisiro yakakosha pakushanda kwedhaka nyowani.Zvisinei, zvidzidzo zvekuedza zvakawana kuti viscosity ye cellulose ether inenge isina simba pane simenti hydration kinetics.Huremu hwemamorekuru hune huremu hushoma pane hydration, uye musiyano mukuru pakati pezviyero zvakasiyana zvemamorekuru ndeye 10min chete.Naizvozvo, huremu hwemamorekuru haisi iyo yakakosha parameter yekudzora simenti hydration.
"Kushandiswa kweCellulose Ether muCement-Based Dry-Mixed Mortar Products" yakaratidza kuti kunonoka kwe cellulose ether kunoenderana nemakemikari ayo.Uye maitiro akaguma akaguma ndeokuti kune MHEC, iyo yakakwirira dhigirii yemethylation, iyo idiki iyo inodzoreredza mhedzisiro ye cellulose ether.Mukuwedzera, iyo inononoka ye hydrophilic substitution (yakadai sekushandura HEC) yakasimba kudarika iyo ye hydrophobic substitution (yakadai sekushandura MH, MHEC, MHPC).Kudzoreredza mhedzisiro ye cellulose ether inonyanya kukanganiswa nezvikamu zviviri, rudzi uye huwandu hwemapoka anotsiva.
Kuongorora kweSystem kwakawanawo kuti zviri mukati mezvinotsiva zvinotora basa rakakosha musimba remagetsi remataira anonamira.Kune HPMC, imwe dhigirii rekupa inodiwa kuti ive nechokwadi chekunyungudika kwemvura uye kutapurirana kwechiedza.Zviri mukati mezvinotsiva zvakare zvinotarisa kusimba kweHPMC.Iyo tembiricha yegel zvakare inosarudza nzvimbo yekushandisa yeHPMC.Mukati mehumwe huwandu, kuwedzera kwemukati methoxyl mapoka kuchaunza kuderera kwesimba rekudhonza-kunze, nepo kuwedzera kwemukati meiyo hydroxypropoxyl mapoka kuchaita kuti kuderera kwekudhonza-kunze kwesimba.kusimukira maitiro.Pane mhedzisiro yakafanana pamaawa ekuvhura.
Shanduko yesimba remagetsi pasi penguva yakavhurika mamiriro inowirirana neiyo pasi peyakajairika tembiricha mamiriro.HPMC ine yakakwira methoxyl (DS) yemukati uye yakaderera hydroxypropoxyl (MS) yemukati ine kuoma kwakanaka kwefirimu, asi ichakanganisa dhaka rakanyorova pane kudaro.zvinhu wetting properties.
Nguva yekutumira: Zvita-12-2022