I-adhesive ye-tile esekelwe kwi-cement yinkqubo enkulu yodaka olukhethekileyo lwangoku oluxutyiweyo.Luhlobo lwe-organic or inorganic admixture kunye nesamente njengeyona nto ingundoqo yesamente kwaye idityaniswe ne-aggregate yokuhlelwa, i-agent yokugcinwa kwamanzi, i-agent yokuqala yamandla kunye ne-latex powder.umxube.Ngokuqhelekileyo, kufuneka ixutywe kuphela ngamanzi.Xa kuthelekiswa nodaka oluqhelekileyo lwesamente, lunokuphucula kakhulu amandla ebhondi phakathi kwezinto ezijongene nazo kunye ne-substrate, inepropathi efanelekileyo yokuchasana kunye nokuchasana kwamanzi kunye nokuxhathisa ukushisa.Ikwasetyenziselwa ukuhlobisa kwangaphakathi kunye neetayile zodonga lwangaphandle, iileyile zomgangatho kunye nezinye izinto zokuhombisa.Isetyenziswe ngokubanzi kumhlobiso wangaphakathi kunye neendonga zangaphandle, imigangatho, amagumbi okuhlambela, iikhikhini, njl njl. Iyona tile isetyenziswa kakhulu.Izinto zokudibanisa.
Ngokuqhelekileyo, xa sigweba ukusebenza kwe-adhesive tile, kufuneka sinikele ingqalelo kumandla ayo omatshini kunye nexesha lokuvula ngaphezu kokusebenza kwayo kunye nekhono lokuchasa.Ukongeza kokuchaphazela iipropati ze-rheological ze-rubber ye-porcelain, njengokulula kokusebenza, imeko yomese wokunamathela, njl.
1. Ixesha lokuvula
NiniI-polymer powder enokuchithwa kwakhonakwayei-cellulose etherzihlalisana kudaka olumanzi, ezinye iimodeli zedatha zibonisa ukuba i-rubber powder inamandla e-kinetic anamandla aqhotyoshelwe kwimveliso ye-cement hydration, kwaye i-ether cellulose ikhona ngakumbi kwi-interstitial fluid, echaphazela ngakumbi.I-viscosity kunye nexesha lokubeka udaka.Uxinzelelo lomphezulu we-ether yeselulosi mkhulu kunomgubo werabha, kwaye ukutyetyiswa kwe-ether yeselulosi engaphezulu kujongano lodaka kunenzuzo ukwenza i-hydrogen bond phakathi komphezulu wesiseko kunye ne-ether cellulose.
Kudaka olumanzi, amanzi eludaka luyaba ngumphunga, i-cellulose ether iyatyetyiswa phezu komhlaba, kwaye ifilimu yenziwa phezu kodaka ngaphakathi kwemizuzu emi-5, nto leyo enciphisa isantya somphunga olandelayo, njengoko amanzi amaninzi ethe kratya ukusuka kumdaka. udaka.Inxalenye yokufudukela kumqolo omncinci wodaka lodaka, ukuvulwa kokuqala kwenwebu kuchithwa ngokuyinxenye, kwaye ukufuduka kwamanzi kuya kuzisa i-ether ye-cellulose ngaphezulu kumphezulu wodaka.
Ukwenziwa kwefilimu ye-cellulose ether kumphezulu wodaka kunempembelelo enkulu ekusebenzeni kodaka:
Okokuqala, ifilimu eyenziwe incinci kakhulu, iya kuchithwa kabini, ayikwazi ukukhawulela ukukhuphuka kwamanzi, ukunciphisa amandla.
Okwesibini, ifilimu eyenziweyo inzima kakhulu, i-concentration ye-cellulose ether kwi-mortar interstitial fluid iphezulu, kwaye i-viscosity inkulu.Xa i-tile ifakwe, akulula ukuphula ifilimu yomhlaba.
Kule nto, kuyaqondwa ukuba ifilimu eyenza iipropati ze-cellulose ether zinempembelelo enkulu kwixesha lokuvula.Uhlobo lwe-cellulose ether (HPMC,HEMC, MC, njl.) kunye neqondo le-etherification (i-degree of substitution) ichaphazela ngokuthe ngqo iipropati zokwenza ifilimu ye-cellulose ether, kunye nobunzima kunye nokuqina kwefilimu.
2.amandla
Ukongeza kokunikezela ngeempawu ezahlukeneyo eziluncedo ezichazwe ngasentla kumdaka, i-cellulose ether ibuyisela i-hydration kinetics yesamente.Oku kuncipha kubangelwa ikakhulu kukufakwa kweemolekyuli ze-cellulose ether kwizigaba ezahlukeneyo zeminerali kwinkqubo yesamente ye-hydrated, kodwa ukuthetha ngokubanzi, iimolekyuli ze-cellulose ether zibhengezwa kakhulu emanzini anjenge-CSH kunye ne-calcium hydroxide.Kwimveliso yeekhemikhali, ayifane ibhengezwe kwisigaba sokuqala samaminerali se-clinker.Ukongezelela, ngenxa yokunyuka kwe-viscosity yesisombululo se-pore, i-ether ye-cellulose iyanciphisa ukuhamba kwe-ion (Ca2 +, SO42-, ...) kwisisombululo se-pore, ngaloo ndlela ilibazise ngakumbi inkqubo ye-hydration.
I-Viscosity yenye iparameter ebalulekileyo emele iimpawu zeekhemikhali ze-cellulose ethers.Njengoko kukhankanyiwe ngasentla, i-viscosity ichaphazela kakhulu amandla okugcina amanzi kwaye inefuthe elibalulekileyo ekusebenzeni kodaka olutsha.Nangona kunjalo, izifundo zovavanyo zifumene ukuba i-viscosity ye-cellulose ether phantse ayinayo impembelelo kwi-hydration kinetics yesamente.Ubunzima be-molecular bunempembelelo encinci kwi-hydration, kwaye umahluko omkhulu phakathi kobunzima beemolekyuli ezahlukeneyo yi-10 min.Ke ngoko, ubunzima bemolekyuli abuyiyo iparameter ephambili yokulawula i-cement hydration.
"Ukusetyenziswa kwe-Cellulose Ether kwi-Cement-Based Dry-mixed Mortar Products" ichaza ngokucacileyo ukuba ukubuyiswa kwe-cellulose ether kuxhomekeke kwisakhiwo sayo samakhemikhali.Umkhwa oqhelekileyo oshwankathelweyo kukuba kwi-MHEC, iqondo eliphezulu le-methylation, encinci ukubuyiswa kwe-cellulose ether.Ukongezelela, ii-hydrophilic substitutions (ezifana nokutshintshwa kwe-HEC) zicinezela ngakumbi kune-hydrophobic substitutions (ezifana nokutshintshwa kwe-MH, i-MHEC, i-MHPC).Isiphumo sokunciphisa i-ether ye-cellulose sichatshazelwa ikakhulu ziiparamitha ezimbini zohlobo kunye nesixa seqela elibambeleyo.
Iimvavanyo zethu zenkqubo nazo zifumene ukuba umxholo wababambeleyo udlala indima ebalulekileyo kumandla omatshini wokunamathela kwi-tile.Sivavanye ukusebenza kwe-HPMC kunye needigri ezahlukeneyo zokutshintshwa kwi-adhesive tile, kwaye sivavanye izibini ze-cellulose ether kunye namaqela ahlukeneyo phantsi kweemeko ezahlukeneyo zokuphilisa.Impembelelo yeempawu zomatshini we-adhesive tile, i-Figure 2 kunye ne-3 yimiphumo yokutshintsha komxholo we-methoxy (DS) kunye nomxholo we-hydroxypropoxy (MS) kumandla okutsalwa kwe-tile adhesive kwiqondo lokushisa.
Umzobo 2
Umzobo 3
Kuvavanyo, siqwalaselaIHydroxypropyl methyl cellulose(HPMC), eyi-ether entsonkothileyo.Ngoko ke, kufuneka sidibanise la manani mabini.Kwi-HPMC, sifuna unikezelo lokuqinisekisa ukunyibilika kwamanzi kunye nokuhanjiswa kokukhanya.Siyawazi umxholo weendawo ezibambeleyo.Ikwamisela ubushushu bejeli ye-HPMC, emisela okusingqongileyo apho kusetyenziswa khona i-HPMC.Ke ngoko, umxholo we-HPMC esetyenziswa ngokuqhelekileyo nayo ifakwe kuluhlu.Indlela yokudibanisa amaqela e-methoxy kunye ne-hydroxypropoxy kolu luhlu Ukufezekisa iziphumo ezilungileyo yinto esiyifundayo.Umzobo we-2 ubonisa ukuba phakathi koluhlu oluthile, ukunyuka komxholo we-methoxyl kuya kuzisa ukuhla kwamandla okutsala, ngelixa umxholo we-hydroxypropoxyl uya kwanda kwaye amandla okutsala aya kwanda.Ngexesha elivulekileyo, kukho iziphumo ezifanayo.
Ixesha lokuposa: Dec-18-2018