I-cellulose ethers yiklasi ebalulekileyo yezongezo ezisebenzayo, ezisetyenziswa ngokubanzi kwintsimi yezinto zokwakha ukuphucula ukusebenza kwemveliso. Ngokukodwa kwi-adhesives ye-tile, i-cellulose ethers inokuphucula kakhulu iimpawu zabo zomzimba kunye neekhemikhali, ukuphucula ukusebenza kolwakhiwo, kunye nokwandisa amandla okudibanisa kunye nokuqina.
1. Iimpawu ezisisiseko ze-cellulose ethers
I-cellulose ethers i-derivatives efunyenwe ngokuguqulwa kweekhemikhali ze-cellulose yendalo, kwaye eziqhelekileyo ziquka i-methyl cellulose (MC), i-hydroxypropyl methyl cellulose (HPMC), i-hydroxyethyl cellulose (HEC), njl. Ezi mpawu zenza i-cellulose ethers idlale indima ephambili kwi-adhesives tile.
2. Ukugcinwa kwamanzi okuphuculweyo
2.1 Ukubaluleka kogcino lwamanzi
Ukugcinwa kwamanzi okunamathelisa iithayile kubalulekile ekusebenzeni kolwakhiwo kunye namandla okubopha. Ukugcinwa kakuhle kwamanzi kunokuqinisekisa ukuba i-adhesive inomswakama ofanelekileyo ngexesha lenkqubo yokunyanga, ngaloo ndlela iqinisekisa ukuhanjiswa kwe-samente epheleleyo. Ukuba ukugcinwa kwamanzi akwanelanga, amanzi athatyathwa kalula yi-substrate okanye indalo, okubangela ukuba i-hydration engaphelelanga, echaphazela amandla okugqibela kunye nomphumo wokudibanisa we-adhesive.
2.2 Indlela yokugcina amanzi ye-cellulose ether
I-Cellulose ether inomthamo ophezulu kakhulu wokugcina amanzi kwaye inokubophelela inani elikhulu leemolekyuli zamanzi kwikhonkco layo lemolekyuli. Isisombululo sayo esiphezulu se-aqueous viscosity singenza ukuhanjiswa kwamanzi okufanayo kwi-adhesive kunye nokuvala amanzi ngesenzo se-capillary kwinethiwekhi yokubambelela ukukhusela amanzi ukuba angalahleki ngokukhawuleza. Le ndlela yokugcinwa kwamanzi ayihambisani kuphela ne-hydration reaction ye-samente, kodwa inokwandisa ixesha elivulekileyo lokunamathela kunye nokuphucula ukuguquguquka kokwakhiwa.
3. Ukuphucula ukusebenza kolwakhiwo
3.1 Ukwandiswa kwexesha elivuliweyo
Ukuqaliswa kwe-ether ye-cellulose kwandisa ixesha elivulekileyo le-adhesives tile, oko kukuthi, ixesha lokuba i-adhesive ihlala inamathele emva kokusetyenziswa kwi-substrate surface. Oku kunika abasebenzi bokwakha ixesha elingakumbi lokulungelelanisa kunye nokubeka iithayile, ngaloo ndlela kuncitshiswa iziphene zokwakha ezibangelwa luxinzelelo lwexesha.
3.2 Umsebenzi ophuculweyo wokuchasana nokudodobala
Ngethuba lenkqubo yokwakhiwa, i-adhesive inokugubha ngenxa yobunzima emva kokuba iithayile zibekwe, ngakumbi xa zisetyenziswe kwiindawo ezithe nkqo. Umphumo wokuqina we-cellulose ether unokuphucula ipropati ye-anti-sagging ye-adhesive, ukuqinisekisa ukuba ayilayidi xa ibambelela kwiileyile. Le propati ibaluleke kakhulu ekuqinisekiseni ukuchaneka kunye ne-aesthetics jikelele yokubeka i-tile.
3.3 Ukuphucula ukuthambisa nokusebenza
I-lubricity ye-cellulose ether iphucula ukusebenza kwe-adhesives ye-tile, okwenza kube lula ukuyifaka kunye nokubetha. Le propati inceda ukunciphisa ubunzima kunye nexesha lokwakha kunye nokuphucula ukusebenza kakuhle.
4. Ukwandisa amandla ebhondi
4.1 Ukuphucula ukuncamatheliswa kokuqala
Isisombululo esiphezulu se-viscosity esenziwe yi-cellulose ether kwisisombululo esinamanzi sinokunyusa ukunamathela kokuqala kwe-adhesive tile, ukubonelela ngokukhawuleza xa ubeka iileyili kunye nokuphepha i-tile sliding okanye i-dislocation.
4.2 Ukukhuthaza ukuhanjiswa kwesamente ngamanzi
Ukusebenza kakuhle kokugcinwa kwamanzi kwe-cellulose ether iqinisekisa ukuphendulwa kwe-hydration epheleleyo ye-samente, ngaloo ndlela ivelisa iimveliso ezininzi ze-hydration (ezifana ne-hydrated calcium silicate), ephucula amandla okubambisana kwe-adhesive. Le nkqubo ayiphuculi kuphela amandla omatshini wokubambelela, kodwa iphucula ukuqina kwayo kunye nokuchasana nokuqhekeka.
5. Ukuphuculwa kokuqina kunye nokumelana nokuqhekeka
5.1 Uphuculo lokumelana nokunyibilika komkhenkce
I-cellulose ethers iphucula ukuxhatshazwa kwe-freeze-thaw ye-adhesives ye-tile ngokuphucula ukugcinwa kwamanzi kunye nokuqina kwe-adhesives tile, ukunciphisa ukufuduka ngokukhawuleza kunye nokulahlekelwa kwamanzi. Olu phuculo luvumela ukuba i-adhesive igcine ukusebenza okuzinzile nakwiindawo ezibandayo ezibandayo kwaye akunakwenzeka ukuba ziqhekeke okanye ziphule.
5.2 Ukuphuculwa kokumelana neecrack
Ngethuba lenkqubo yokunyanga i-adhesive, i-dense network structure eyenziwe yi-cellulose ethers inceda ukucotha i-shrinkage ye-samente kunye nokunciphisa umngcipheko wokuqhekeka okubangelwa uxinzelelo lwe-shrinkage. Ukongezelela, umphumo wokuqina we-cellulose ethers yenza ukuba i-adhesive igcwalise kangcono i-gap phakathi kwe-tile kunye ne-substrate, iqhubekisela phambili ukuzinza kwe-bonding interface.
6. Eminye imisebenzi
6.1 Ukubonelela ngeempawu zokuthambisa kunye nezokunqanda ukuntywila
I-lubrication ye-cellulose ethers ayincedi kuphela ukusebenza kokusebenza, kodwa inciphisa i-phenomenon ye-sagging ye-adhesive ngexesha lenkqubo yesicelo, ukuqinisekisa ukufana kunye nokuzinza ngexesha lesicelo.
6.2 Uphuculo oluluncedo lolwakhiwo
Ngokunyusa i-viscosity kunye nexesha lokwakhiwa kwe-adhesive, i-ether ye-cellulose iphucula ukulungelelaniswa kokwakhiwa, ukuvumela abasebenzi bokwakha ukuba balungelelanise indawo yeetayile ngokulula, ukunciphisa iziphene zokwakha kunye namazinga okusebenza kwakhona.
7. Imizekelo yokusetyenziswa kwe-Cellulose Ether
Kwizicelo ezithile, i-cellulose ether iphucula umgangatho weprojekthi yonke ngokuphucula ukusebenza kwe-adhesives tile. Ngokomzekelo, kwiindawo ezithile zokushisa okuphezulu okanye ukufuma okuphantsi, ukunamathiswa okuqhelekileyo kunokujongana nengxaki yokulahleka kwamanzi ngokukhawuleza, okubangelwa ubunzima bokwakha kunye namandla anganeleyo. Emva kokufaka i-cellulose ether, i-adhesive inokugcina ukugcinwa kwamanzi okulungileyo, ukuphepha ezi ngxaki, kwaye ngaloo ndlela uqinisekise umgangatho weprojekthi.
I-ether ye-cellulose iphucula kakhulu ukusebenza kwe-adhesives ye-tile ngokusebenzisa ukugcinwa kwamanzi okugqwesileyo, ukuqina kunye nokuthambisa. Ayiphuculi nje kuphela ukusebenza kolwakhiwo, amandla okudibanisa kunye nokuqina kwe-adhesive, kodwa iphucula lula kunye nokuthembeka kolwakhiwo. Olu phuculo aluphuculi kuphela umgangatho opheleleyo weprojekthi, kodwa lubonelela ngokuguquguquka okukhulu kunye nokuzinza kwinkqubo yokwakha. Ngoko ke, njengesongezo esibalulekileyo, ukusetyenziswa kwe-cellulose ether kwi-adhesives tile kunexabiso elibalulekileyo elisebenzayo kunye namathemba abanzi.
Ixesha lokuposa: Jun-24-2024