Cement-based ceramic tile adhesive parizvino ndiyo yakanyanya kushandiswa yeakakosha yakaoma kusanganisa dhaka, iri rudzi rwesimende sechinhu chikuru chekuisa simende uye inowedzerwa nekugadzika kweaggregate, mvura yekuchengetedza mvura, yekutanga simba mumiriri, latex poda uye zvimwe organic kana inorganic. zvinosanganiswa. Inowanzo shandiswa chete nekusanganiswa kwemvura, kana ichienzaniswa neyakajairika simende dhaka, inogona kuvandudza zvakanyanya simba rekubatanidza pakati pechinhu chekupedzisa uye chigadziko, ine yakanaka anti-kutsvedza uye ine yakanakisa kudzivirira kwemvura, kupisa kupisa uye kutonhora-kunyunguduka kutenderera kwakanakira, kunonyanya kushandiswa. yekunamira madziro emukati uye ekunze emadziro mataira, matanda epasi uye zvimwe zvekushongedza zvinhu, Inoshandiswa zvakanyanya mukushongedza kwemadziro, pasi, yekugezera, makicheni uye zvimwe zvivakwa. Ndiyo inonyanya kushandiswa ceramic tile bonding zvinhu.
Kazhinji kana isu tichitonga mashandiro eitaramic tile adhesive, kunze kwekuteerera kwayo kushanda kwayo, anti-sliding kugona, asi zvakare teerera kune yayo mechanical simba uye yakazaruka nguva. Cellulose ether paceramic tile adhesive mukuwedzera kukanganisa rheological zvimiro zveporcelain glue, senge yakatsetseka mashandiro ekuita, stick banga mamiriro ezvinhu, asiwo pane mechaniki zvinhu zveceramic tile adhesive ine simba rakasimba.
1. Vhuranguva
Kana rabha hupfu uye cellulose ether zviripo mudhaka rakanyorova, mamwe mamodheru edhata anoratidza kuti rabha hupfu ine simba rekinetic rakasimba rekuomerera kune simende hydration zvigadzirwa, uye cellulose ether inowanikwa zvakanyanya mugap fluid, iyo inokanganisa viscosity uye nguva yekumisa yedhaka. zvimwe. Kurwisana kwepamusoro kwe cellulose ether yakakura kudarika iyo yehupfu yerabha, uye kupfumiswa kweimwe cellulose ether pamatope interface kunobatsira pakuumbwa kwehydrogen bonds pakati pepasi plane uye cellulose ether.
Kubuda kwehunyoro kubva mudhaka rakanyorova, dhaka, cellulose ether mukupfumisa kwepamusoro, maminetsi mashanu anogona kugadzira membrane pamusoro pedhaka, inoderedza chiyero chekubuda kwekutevera, nemvura yakawanda kubva kune slurry gobvu chikamu chemvura. kufambisa kune dhaka layer itete, nzvimbo dzakavhurika dzakanyungudika zvishoma apo kuumbwa kwekutanga kwe membrane, kutama kwemvura kunogona kuunza kuwedzera kupfumisa kweselulosi ether mudhaka riri pamusoro.
Iyo firimu kuumbwa kwe cellulose ether pamusoro pedhaka ine simba guru pazvinhu zvedhaka:
Kutanga, iyo firimu yakaumbwa yakanyanya kutetepa, ichanyungudutswa kaviri, isingakwanisi kudzikamisa kubuda kwemvura, kuderedza simba.
Chechipiri, kuumbwa kwefirimu kwakanyanyisa, cellulose ether mumatope gap liquid concentration yakakwira, viscosity, apo ceramic tile paste haisi nyore kuputsa pamusoro pefirimu.
Zvinogona kuonekwa kuti firimu rinogadzira kushanda kwe cellulose ether ine simba guru panguva yekuvhura. Mhando ye cellulose ether (HPMC, HEMC, MC, etc.) uye dhigirii ye etherification (degree of substitution) inobata zvakananga firimu rinogadzira kushanda kwe cellulose ether, kune kuoma uye kuoma kwefirimu.
2, kudhonza simba
Cellulose ether haingopei dhaka nezvose zviri pamusoro zvinobatsira, asiwo inonokesa iyo hydration kinetics ye simenti. Kudzoreredzwa uku kunonyanya kukonzerwa nekushambadza kwe cellulose ether mamorekuru pazvikamu zvakasiyana zvicherwa musimenti system iri hydrated, asi zvinotenderwa kuti cellulose ether mamorekuru anonyanya kushambadzirwa pane zvigadzirwa zve hydration seCSH uye calcium hydroxide, uye haawanzo kushambadzirwa pa. iyo yepakutanga mineral phase ye clinker. Mukuwedzera, cellulose ether inoderedza ions (Ca2+, SO42-, ...) nekuda kwekuwedzera viscosity ye pore solution. Chiitiko mu pore solution, iyo inowedzera kudzoreredza iyo hydration process.
Viscosity imwe inokosha parameter, iyo inomiririra makemikari e-cellulose ether. Sezvambotaurwa pamusoro apa, viscosity inonyanya kukanganisa simba rekuchengetedza mvura, uye inewo mhedzisiro yakakosha pakushanda kwedhaka nyowani. Zvisinei, chidzidzo chekuedza chakawana kuti viscosity ye cellulose ether yakanga isina simba pane hydration kinetics ye simenti. Huremu hwemamorekuru hune simba shoma pane hydration, uye mutsauko mukuru pakati pezviyereso zvakasiyana zvemamorekuru ndeye 10min chete. Naizvozvo, huremu hwemamorekuru haisi iyo yakakosha parameter yekudzora simende hydration.
"Cellulose ether in simenti based dry mix mortar products in the application" yakanyatsoratidza kuti cellulose ether kunonoka kunoenderana nemakemikari ayo. Maitiro akajairika ndeokuti kune MHEC, iyo yakakwira dhigirii yemethylation, iyo idiki iyo inononoka mhedzisiro ye cellulose ether. Mukuwedzera, hydrophilic substitution (yakadai sekushandura HEC) ine simba rakasimba rekudzivisa kudarika hydrophobic substitution (yakadai sekushandura MH, MHEC uye MHPC). Iko kudzoreredza mhedzisiro ye cellulose ether inonyanya kukanganiswa nemaparamita maviri erudzi uye nhamba yemapoka akatsiviwa.
Yedu yakarongeka yekuyedza yakawanawo kuti zviri mukati mezvinotsiva zvinotora basa rakakosha musimba remakanika ye ceramic tile adhesive. Isu takaongorora mashandiro eHPMC neakasiyana madhigirii ekutsiva mune ceramic tile adhesive, uye takaedza pesvedzero ye cellulose ether ine mapoka akasiyana pasi pemamiriro akasiyana ekurapa pane mechanical ehupfumi ye ceramic tile adhesive. Pesvedzero yezviri mukati meDS uye MS pane kudhirowa simba receramic mataira anonamira pakamuri tembiricha.
HPMC inoumbwa ether, saka kuisa manhamba maviri pamwe chete, kune HPMC, panofanirwa kuve nedhigirii rekupa, kuitira kuti ive nechokwadi chekunyungudika kwemvura uye transmittance, tinoziva kuti zviri mukati mezvinotsiva zvakare zvinotarisa tembiricha yegel yeHPMC. , inova yekuona kushandiswa kweHPMC nharaunda, Nenzira iyi, iro boka remukati reHPMC rakagadzirwa mumhando. Muchikamu ichi, nzira yekubatanidza methoxy uye hydroxypropoxy kuti uwane yakanakisa mhedzisiro ndizvo zviri muchidzidzo chedu. Mune imwe nhanho, kuwedzera kwemethoxy yemukati kunotungamira kune yakaderera maitiro ekudhirowa simba, nepo kuwedzera kweiyo hydroxypropoxy yemukati kunotungamira kune yakakwira maitiro ekudhirowa simba. Pane mhedzisiro yakafanana pane yakavhurika nguva.
Nguva yekutumira: Zvita-20-2021