I-HPMC ku-Tile Adhesives

TileokunamathelayoAbantu abaningi baziwa nangokuthi i-ceramicama-tile anamathelayo, labo abaye bathinta ukusetshenziswa kwe-ceramic tileokunamathelayokusigubhu sayo esilwa nokungenalutho, okunamathelayo, ukwakhiwa, ukumelana nokuguga nezinye izinzuzo ziyabonakala ngokuphelele.

I-cellulose etherI-HPMCnjengesengezo esibaluleke kakhulu kuama-tile anamathelayo, ama-tile anamathelayoukudonsa amandla kanye nesikhathi sokuvula kunomthelela onamandla, futhi lezi zinto ezimbili nazo ziyizinkomba ezibalulekile zokusebenza okuphezuluama-tile anamathelayo, ngokuhlolwa komphumela we-cellulose ether onama-tile anamathelayoizakhiwo zafingqwa futhi zabuyekezwa.

1, isandulela

I-ceramic esekelwe kusimendeama-tile anamathelayookwamanje iwukusetshenziswa okukhulu kakhulu kodaka olukhethekile lokuxuba okomile, okuwuhlobo lukasimende njengento eyinhloko yokufaka usimende futhi yengezwe ngokuhlelwa kweqoqo, i-ejenti yokugcina amanzi, i-ejenti yamandla okuqala, i-latex powder nezinye izixube eziphilayo noma ezingaphili. Imvamisa esetshenziswa kuphela ngokuxutshwa kwamanzi, uma kuqhathaniswa nodaka olujwayelekile lukasimende, ingathuthukisa kakhulu amandla okubopha phakathi kwezinto zokuqeda kanye nesisekelo sezinto, ine-anti-slip enhle futhi inokumelana okuhle kwamanzi, ukumelana nokushisa kanye nezinzuzo zomjikelezo wokuqandisa, ezisetshenziswa kakhulu. ukunamathisela odongeni lwesakhiwo sangaphakathi nangaphandle, amathayili aphansi nezinye izinto zokuhlobisa, Isetshenziswa kabanzi ekuhlobiseni izindonga, phansi, izindlu zangasese, amakhishi nezinye izakhiwo. Kuyinto esetshenziswa kakhulu i-ceramic tile bonding material.

Ngokuvamile lapho sahlulela ukusebenza kwe-ceramicama-tile anamathelayo, ngaphezu kokunaka ukusebenza kwayo kokusebenza, ikhono lokulwa nokuslayida, kodwa futhi unake amandla ayo emishini kanye nesikhathi sokuvula. I-cellulose ether ku-ceramicama-tile anamathelayongaphezu kokuthinta izakhiwo ze-rheological ze-porcelain glue, njengokusebenza kahle kokusebenza, isimo sommese wokunamathela, kodwa futhi nasezintweni zemishini ye-ceramic.ama-tile anamathelayoinethonya elinamandla.

2, ithonya lesikhathi sokuvula se-ceramicama-tile anamathelayo

Lapho impushana yerabha kanye ne-cellulose ether zikhona odakeni olumanzi, amanye amamodeli edatha abonisa ukuthi impushana yerabha inamandla anamandla e-kinetic okunamathela emikhiqizweni kasimende, futhi i-cellulose ether ikhona kakhulu oketshezini lwe-gap, oluthinta i-viscosity kanye nesikhathi sokubeka udaka. Okuningi. Ukungezwani okungaphezulu kwe-cellulose ether kukhulu kunaleyo yempushana yerabha, futhi ukunothiswa kwe-cellulose ether eyengeziwe esixhunyweni sodaka kunenzuzo ekwakhekeni kwamabhondi e-hydrogen phakathi kwendiza eyisisekelo ne-cellulose ether.

Ukuhwamuka komswakama odakeni olumanzi, udaka, i-cellulose ether endaweni yokucebisa okungaphezulu, imizuzu emi-5 kungakha ulwelwesi ebusweni bodaka, kuzonciphisa izinga lokuhwamuka kokulandela, ngamanzi engeziwe avela engxenyeni ewudaka ewudaka. ukuthuthela ungqimba nosimende mncane, amaphuzu avulekile ingxenye zincibilike lapho ukwakheka kokuqala ulwelwesi, ukufuduka kwamanzi kungaletha ukunothisa okwengeziwe cellulose ether odakeni phezu.

Ngakho, ukwakheka kwefilimu ye-cellulose ether ebusweni bodaka kunomthelela omkhulu ekusebenzeni kodaka, 1) ifilimu eyakhiwe incane kakhulu, izohlakazwa kabili, ayikwazi ukukhawulela ukuhwamuka kwamanzi, ukunciphisa amandla. 2) ifilimu eyakhiwe iminyene kakhulu, ukuhlushwa kwe-cellulose ether ku-slurry clearance liquid kuphezulu, futhi i-viscosity inkulu. Lapho i-tile ye-ceramic inamathiselwe, akulula ukuphula ifilimu ebusweni. Kungabonakala ukuthi ifilimu eyenza ukusebenza kwe-cellulose ether inethonya elikhulu ngesikhathi sokuvula. Uhlobo lwe-cellulose ether (i-HPMC, i-HEMC, i-MC, njll.) kanye nezinga le-etherification (izinga lokushintsha) lithinta ngokuqondile ukusebenza kwefilimu eyenza i-cellulose ether, ebulukhunini nasekuqineni kwefilimu.

3, ithonya lamandla okudweba

I-Cellulose ether ayigcini nje ngokunikeza udaka nazo zonke izakhiwo ezinenzuzo ezingenhla, kodwa futhi ibambezela i-hydration kinetics kasimende. Lo mphumela obambezelekile ubangelwa ikakhulukazi ukukhangiswa kwama-molecule e-cellulose ether ezigabeni ezihlukahlukene zamaminerali ohlelweni lukasimende olunikezwa amanzi, kodwa ngokuvamile kuvunyelwana ngokuthi ama-molecule e-cellulose ether akhangwa kakhulu emikhiqizweni ye-hydration efana ne-CSH ne-calcium hydroxide, futhi ayavamisile ukuthi adsorbed on. isigaba sokuqala samaminerali se-clinker. Ngaphezu kwalokho, i-cellulose ether inciphisa ama-ion (Ca2+, SO42-,…) ngenxa yokwanda kwe-viscosity yesisombululo se-pore. Umsebenzi kusixazululo se-pore, ophinde ubambezele inqubo ye-hydration.

I-Viscosity ingenye ipharamitha ebalulekile, emele izakhiwo zamakhemikhali ze-cellulose ether. Njengoba kushiwo ngenhla, i-viscosity ithinta kakhulu amandla okugcina amanzi, futhi iphinde ibe nomthelela omkhulu ekusebenzeni kodaka olusha. Kodwa-ke, ucwaningo lokuhlola lwathola ukuthi i-viscosity ye-cellulose ether cishe ayinawo umthelela ku-hydration kinetics kasimende. Isisindo se-molecular sinethonya elincane ku-hydration, futhi umehluko omkhulu phakathi kwesisindo samangqamuzana ahlukene yi-10min kuphela. Ngakho-ke, isisindo samangqamuzana akusona ipharamitha eyinhloko yokulawula ukugeleza kukasimende.

Ukuncipha kwe-cellulose ether kuncike ekwakhekeni kwamakhemikhali. Ukuthambekela okuvamile ukuthi ku-MHEC, izinga eliphezulu le-methylation, liba mncane umphumela wokuvinjelwa kwe-cellulose ether. Ukwengeza, ukufaka esikhundleni se-hydrophilic (njengokufaka esikhundleni se-HEC) kunomphumela onamandla wokubuyisela emuva kunokushintsha kwe-hydrophobic (njengokufaka esikhundleni se-MH, i-MHEC ne-MHPC). Umthelela wokuhlehlisa we-cellulose ether uthintwa ikakhulukazi amapharamitha amabili ohlobo nenani lamaqembu afakwe esikhundleni.

Ukuhlola kwethu okuhlelekile kuphinde kwathola ukuthi okuqukethwe kwezinye izinto kudlala indima ebalulekile kumandla wemishini wokunamathela kwethayela le-ceramic. Sihlole ukusebenza kwe-HPMC ngamadigri ahlukene okushintsha endaweni yokunamathela kuthayela we-ceramic, futhi sahlola umthelela we-cellulose ether equkethe amaqembu ahlukene ngaphansi kwezimo ezihlukene zokuphulukisa ezicini zemishini zokunamathela kwethayela le-ceramic.

Umkhuba wokushintsha amandla emishini ngaphansi kwesimo sokuvula isikhathi uhambisana nesimo sokushisa esivamile, esibuye sihambisane nokuqina kwefilimu ye-cellulose ether esikhulume ngayo esigabeni 2. I-HPMC enokuqukethwe okuphezulu kwe-methoxy (DS) kanye ne-hydroxypropoxy ephansi ( MS) okuqukethwe kunokuqina okuhle, kodwa kuzothinta ukumanzisa kodaka olumanzi lwento engaphezulu.

4, isifinyezo

I-cellulose ether, ikakhulukazi i-methyl cellulose ether efana ne-HEMC ne-HPMC, iyisengezo esibalulekile ekusetshenzisweni kwemikhiqizo eminingi yodaka olomile. Impahla ebaluleke kakhulu ye-cellulose ether ukugcinwa kwayo kwamanzi ezintweni zokwakha amaminerali. Uma i-cellulose ether ingengeziwe, ungqimba oluncane lodaka olusha luzokoma ngokushesha, ukuze usimende ungabi namanzi ngendlela evamile, okuholela ekutheni udaka alukwazi ukuqina futhi alukwazi ukuthola ukunamathela okuhle kwesisekelo. Kunezici eziningi ezithinta ukugcinwa kwamanzi kwe-cellulose ether, njengemithamo kanye ne-viscosity, kanye nokwakheka kwayo okungokwemvelo: Idigri yokufaka esikhundleni sokusebenza kokugcina kodaka inomthelela omkhulu, isikhathi eside besiphikisana ngokuthi i-viscosity ye-cellulose ether Izinto eziyisisekelo zikasimende zinomthelela omkhulu ngesikhathi sokuhlangana nokunye, ucwaningo lwakamuva luthole ukuthi ukushintshwa kwe-viscosity yomphumela wesikhathi sokubeka usimende kuncane kakhulu, kodwa esikhundleni sezinhlobo zeqembu nokubambisana nakho kuyisici esibaluleke kakhulu kuthinta umsebenzi we-cellulose ether.

Manje ngokulandelana ukuze ubone ukusebenza kanye nendima ye-adhesives ye-tile main eluhlaza:

1, usimende

Sonke siyazi ukuthi usimende awuyona into enobuthi ekuvikelweni kwemvelo, futhi unokumelana okuqinile nokuguga.

2, ukugreda isihlabathi

Isihlabathi sokulinganisa empeleni siyisihlabathi somfula ngemva kokugeza ngemva kokumiswa, bese sisefa ubukhulu obuthile bosayizi wokusanhlamvu besihlabathi, okubuye kube nokuvikelwa okungezona okunobuthi kanye nemvelo, indima yaso eyinhloko ukugcwalisa, ukuze kuncishiswe ukuncipha kokuqiniswa kwezinamathiselo zamathayela. .

Ngenhla kunezinhlobo ezimbili zabo bonke abantu abajwayelene nezinto ezibonakalayo, isengezo se-polymer umphakathi ongasijwayele ngokuningiliziwe ngezansi, iyiphi into ekugcineni?

3, i-HPMC (i-hydroxypropyl methyl cellulose ether)

I-HPMC yengezwe kuma-adhesive tile e-ceramic ngaphakathi kwendima eyinhloko ukugcina amanzi, ukuqina, inhloso ukuthuthukisa izinamathiselo ze-ceramic ezinamathelayo zokugcina amandla okuqinisa, ukwandisa isikhathi sokuvula nokuthuthukisa ukwakhiwa, umthombo wawo ukotini ngemva kokuguqulwa, okungukuthi ithi, ivela emvelweni, ayilimazi emzimbeni womuntu, imikhiqizo yokuvikela imvelo ngokuphelele;

4, i-RDP ye-polymer powder ehlakazeka kabusha

Indima yayo eyinhloko kuma-adhesive tile e-ceramic ukuthuthukisa amandla okubopha, ngeke kube nomthelela ekwakhiweni, okusho ukuthi, izinhlobo ezahlukene ze-ceramic tile adhesives ngaphakathi kokwengezwa kwe-Redispersible polymer powder RDP asikwazi ukwahlulela lapho isicelo. , okuwukuphela kwento engabonisa amandla okubopha ama-adhesive tile e-ceramic ngemva kokuqina kwezitini, Lokhu kusebenza ngokuvamile kusetshenziswa ithuluzi lokudweba ithayela le-ceramic ukuze kuhlolwe ukuthi lingahlangabezana yini nezindinganiso zikazwelonke, ku-Redispersible polymer powder RDP ayiyona i-glue izithako zeglue, i-emulsion emaphethelweni ombhoshongo wokomisa ngokusebenzisa isifutho sokumisa ngemva kokuphothulwa kwempushana, ingabuye ikuchaze njenge-emulsion powder, ilulame lapho ihlangana namanzi izophinde ichitheke ku-emulsion, okusho ukuthi, i-adhesive. yezinamathiselo zethu ze-ceramic tile zitholakala ku-emulsion esikhundleni seglue, bese kuthi i-Redispersible polymer powder RDP iphinde ibe yemikhiqizo yokuvikela imvelo, ngakho-ke asikho isidingo sokukhathazeka mayelana nezinamatheliso zamathayili e-ceramic aqukethe i-glue izinto ezinjalo eziyingozi;

5, i-wood fiber

Umsebenzi oyinhloko we-ceramic tile adhesives ukumelana nokuqhekeka nokunciphisa isikhumba sikasimende se-ceramic tile. Ibuye ivela emvelweni. Iphulwa ukuze i-flocc ngesenzo semishini yokhuni, futhi ingqikithi yayo iwukhuni, ngakho-ke ihambisana nemvelo.

6, isitashi se-ether

Indima yayo eyinhloko ekunamatheleni kwamathayela e-ceramic i-anti-flow, i-anti-slip kanye ne-synergistic HPMC yokuthuthukisa ukwakhiwa, iwumkhiqizo wesitashi sesitshalo semvelo esishintshwe i-etherification, kodwa futhi kusukela kumvelo yemikhiqizo yokuvikela imvelo.

Ungabona ngenhla izinhlobo eziyi-6 zezinto zokusetshenziswa zonke azinabungozi, izinto ezivikela imvelo, ngakho-ke izinto zokunamathisela zamathayili e-ceramic akuyona ingcina. Futhi ingxenye evela kumkhiqizo, kufanele isebenzise indlela yenduku encane, yonge isikhathi ukuze wonge isikhala kakade. Ngemuva kocwaningo lwesayensi lochwepheshe, kanye nobufakazi besikhathi, kufanelekile ukukhuthazwa.