Isincamathelisi sethayile esekwe kwisamente esekwe kwithayile ngoku sesona sicelo sikhulu sodaka olukhethekileyo lomxube owomileyo, oluluhlobo lwesamente njengeyona nto iphambili yesamente kwaye yongezwa ngokuhlelwa kwe-aggregate, iarhente yokugcina amanzi, iarhente yamandla okuqala, i-latex powder kunye nezinye izinto eziphilayo okanye ezingaphiliyo. imixube. Ngokuqhelekileyo isetyenziselwa ukuxuba amanzi kuphela, xa kuthelekiswa nodaka oluqhelekileyo lwesamente, inokuphucula kakhulu amandla okudibanisa phakathi kwezinto zokugqiba kunye nesiseko sezinto, ine-anti-slip elungileyo kwaye inokumelana nokugqwesa kwamanzi, ukumelana nobushushu kunye neenzuzo zomjikelo wokunyibilika, ezisetyenziswa kakhulu. ukuncamathisela iithayile zodonga lwangaphakathi kunye nangaphandle, iithayile zomgangatho kunye nezinye izinto zokuhombisa, Isetyenziswa ngokubanzi kumhombiso weendonga, imigangatho, amagumbi okuhlambela, iikhikhithi kunye nezinye izakhiwo. Yeyona nto isetyenziswa kakhulu kwi-ceramic tile bonding material.
Ngokuqhelekileyo xa sigweba ukusebenza kwe-adhesive tile ye-ceramic, ngaphezu kokunikela ingqalelo ekusebenzeni kwayo, ukukwazi ukulwa nokuslayida, kodwa kwakhona ingqalelo kumandla ayo omatshini kunye nexesha elivulekileyo. I-Cellulose ether kwi-adhesive ithayile ye-ceramic enamathelayo ngaphezu kokuchaphazela iipropati ze-rheological ze-porcelain glue, ezifana nokusebenza okugudileyo, imeko yemela, kodwa nakwiipropati zomatshini we-ceramic ithayile encamathelayo inefuthe elinamandla.
1. Vulaixesha
Xa umgubo werabha kunye neselulosi ether zikho kudaka olumanzi, ezinye iimodeli zedatha zibonisa ukuba umgubo werabha unamandla e-kinetic anamandla okubambelela kwiimveliso zesamente, kunye ne-cellulose ether ikhona ngakumbi kwi-gap fluid, echaphazela i-viscosity kunye nokubeka ixesha lodaka. Kaninzi. Uxinzelelo lomphezulu we-cellulose ether mkhulu kunomgubo werabha, kwaye ukutyetyiswa kwe-ether ye-cellulose engaphezulu kwi-interface yodaka kunenzuzo ekwenziweni kweebhondi ze-hydrogen phakathi kwesiseko sendiza kunye ne-cellulose ether.
Umphunga wobumanzi obusuka kudaka olumanzi, udaka, i-cellulose ether kwindawo yokutyebisa umphezulu, imizuzu emi-5 inokwenza inwebu kumphezulu wodaka, iya kunciphisa izinga lokunyuka komphunga lokulandela, ngamanzi amaninzi asuka kwindawo etyebileyo yodaka. ukufudukela umaleko lodaka lubhityile, iingongoma ezivulekileyo ngokuyinxenye zinyibilike xa ukwakheka kokuqala inwebu, ukufuduka kwamanzi kunokuzisa ukutyeba ngakumbi cellulose etere eludaka phezu komhlaba.
Ukwenziwa kwefilimu ye-cellulose ether kumphezulu wodaka kunempembelelo enkulu kwiipropati zodaka:
Okokuqala, ifilimu eyenziwe incinci kakhulu, iya kuchithwa kabini, ayikwazi ukukhawulela ukukhuphuka kwamanzi, ukunciphisa amandla.
Eyesibini, ukwakheka kwefilimu kungqingqwa kakhulu, i-etere yeselulosi kumsantsa woxinaniso lolwelo lodaka iphezulu, i-viscosity, xa i-ceramic tile paste ayilula ukwaphula umphezulu wefilimu.
Ingabonwa ukuba ifilimu eyenza ukusebenza kwe-cellulose ether inempembelelo enkulu kwixesha lokuvula. Uhlobo lwe-cellulose ether (i-HPMC, i-HEMC, i-MC, njl.) kunye ne-degree of etherification (i-degree of substitution) ichaphazela ngokuthe ngqo ifilimu eyenza ukusebenza kwe-cellulose ether, kubunzima kunye nokuqina kwefilimu.
2, ukutsala amandla
I-Cellulose ether ayigcini nje ukubonelela ngodaka kunye nazo zonke iimpawu ezincedo ezingentla, kodwa iphinda ilibazise i-hydration kinetics yesamente. Esi siphumo sibambezelekile sibangelwa ikakhulu kukufakwa kweemolekyuli ze-cellulose ether kwizigaba ezahlukeneyo zeminerali kwinkqubo yesamente ukuba ifakwe amanzi, kodwa kuvunyelwene ngokubanzi ukuba iimolekyuli ze-cellulose ether zibhengezwa ikakhulu kwiimveliso ze-hydration ezifana ne-CSH kunye ne-calcium hydroxide, kwaye kunqabile ukuba zifakwe kwi-adsorbed. isigaba sokuqala seminerali se-clinker. Ukongeza, i-cellulose ether iyanciphisa i-ion (Ca2 +, SO42-, ...) ngenxa yokunyuka kwe-viscosity yesisombululo se-pore. Umsebenzi kwisisombululo sepore, esibuyisela umva inkqubo yokufakwa kwamanzi.
I-Viscosity yenye iparameter ebalulekileyo, emele iimpawu zeekhemikhali ze-cellulose ether. Njengoko kukhankanyiwe ngasentla, i-viscosity ichaphazela ubukhulu becala umthamo wokugcinwa kwamanzi, kwaye inefuthe elibalulekileyo ekusebenzeni kodaka olutsha. Nangona kunjalo, uphononongo lovavanyo lwafumanisa ukuba i-viscosity ye-cellulose ether phantse ayinasiphumo kwi-hydration kinetics yesamente. Ubunzima bemolekyuli bunempembelelo encinci kwi-hydration, kwaye umahluko omkhulu phakathi kobunzima beemolekyuli ezahlukeneyo yi-10min kuphela. Ke ngoko, ubunzima bemolekyuli abuyiyo iparameter ephambili yokulawula i-cement hydration.
"I-cellulose ether kwi-samente esekelwe kwiimveliso zodaka ezomileyo kwisicelo" yabonisa ngokucacileyo ukuba ukulibaziseka kwe-cellulose ether kuxhomekeke kwisakhiwo sayo sekhemikhali. Umkhwa oqhelekileyo kukuba kwi-MHEC, iqondo eliphezulu le-methylation, i-ether encinci ye-retading effect ye-cellulose ether. Ukongezelela, ukutshintshwa kwe-hydrophilic (njengokutshintshwa kwe-HEC) kunempembelelo enamandla yokunciphisa i-hydrophobic substitution (efana nokutshintshwa kwe-MH, i-MHEC kunye ne-MHPC). Isiphumo sokunciphisa i-cellulose ether ichaphazeleka kakhulu kwiiparamitha ezimbini zohlobo kunye nenani lamaqela afakwe endaweni.
Uvavanyo lwethu olucwangcisiweyo luphinde lwafumanisa ukuba umxholo wabaxumi udlala indima ebalulekileyo kumandla omatshini we-adhesive tile ye-ceramic. Sivavanye ukusebenza kwe-HPMC kunye needigri ezahlukeneyo zokutshintshwa kwi-ceramic tile adhesive, kwaye sivavanye impembelelo ye-cellulose ether equkethe amaqela ahlukeneyo phantsi kweemeko ezahlukeneyo zokuphilisa kwiipropati ze-mechanical ze-ceramic tile adhesive. Impembelelo yomxholo we-DS kunye ne-MS kumandla womzobo we-ceramic tile adhesive kwiqondo lokushisa.
I-HPMC yi-ether edibeneyo, ngoko ukubeka amanani amabini kunye, ngenxa ye-HPMC, kufuneka kubekho iqondo lonikezelo, ukwenzela ukuba kuqinisekiswe ukunyibilika kwayo kwamanzi kunye nokudluliselwa, siyazi ukuba umxholo we-substituents kwakhona umisela ubushushu bejeli ye-HPMC. , oko kukumisela ukusetyenziswa kwendawo ye-HPMC, Ngale ndlela, umxholo weqela le-HPMC uqulunqwe kuluhlu. Kuloluhlu, indlela yokudibanisa i-methoxy kunye ne-hydroxypropoxy ukufezekisa umphumo ongcono kakhulu ngumxholo wesifundo sethu. Kuluhlu oluthile, ukunyuka komxholo we-methoxy kuya kukhokelela ekuhlahleni kwamandla okudweba, ngelixa ukwanda komxholo we-hydroxypropoxy kuya kukhokelela kwindlela ephezulu yokudweba amandla. Kukho umphumo ofanayo kwixesha elivulekileyo.
Ixesha lokuposa: Dec-20-2021