Izincamathelisi zethayile zidlala indima ebalulekileyo kushishino lokwakha, zibonelela ngezisombululo ezihlala ixesha elide nezintle zokuncamathelisa iithayile kwiindawo ezahlukeneyo. Ukusebenza kakuhle kwezincamathelisi zethayile kuxhomekeke kakhulu kumxholo wezongezo eziphambili, apho iipolymers eziphinda zichithwe kunye ne-cellulose zezona zithako zimbini ziphambili.
1. Iipolymers eziphinda zichithwe:
1.1 Inkcazo kunye neempawu:
Iipolymers eziphinda zichithwe zizinto ezongeziweyo ezenziwe ngomgubo ezifunyanwa nge-spray drying polymer emulsions okanye i-dispersions. Ezi polymers zihlala zisekelwe kwi-vinyl acetate, i-ethylene, i-acrylics okanye ezinye ii-copolymers. Uhlobo lwepowder kulula ukuluphatha kwaye lungafakwa kwi-tile adhesive formulations.
1.2 Ukuphucula ukunamathela:
Iipolymers eziphinda ziphinde zisetyenziswe ziphucula kakhulu ukunamathela kweethayile ezincamathelayo kwiintlobo ngeentlobo zezixhobo. Ipolymer iyoma ukuze yenze ifilimu eguquguqukayo nenamathelayo edala unxibelelwano oluqinileyo phakathi kwento encamathelayo kunye nethayile kunye nesixhobo esincamathelayo. Oku kunamathela okuphuculweyo kubalulekile ekuqinisekiseni ukuba umphezulu wethayile uhlala ixesha elide kwaye uzinzo luhlala ixesha elide.
1.3 Ukuguquguquka kunye nokumelana nokuqhekeka:
Ukongezwa kwepolymer ephinda ichitheke kunika ithayile enamathelayo ukuguquguquka, okuyivumela ukuba ivumelane nokuhamba kwesiseko ngaphandle kokuqhekeka. Oku kuguquguquka kubaluleke kakhulu kwiindawo apho utshintsho lobushushu okanye utshintsho lolwakhiwo lunokwenzeka, okuthintela ukwakheka kwemifantu enokubeka emngciphekweni ukuthembeka komphezulu wethayile.
1.4 Ukumelana namanzi:
Iipolymers eziphinda ziqhekeke zinegalelo ekungangeni kwamanzi kweethayile zokuncamathelisa. Ifilimu yepolymer eyenziwayo xa yoma isebenza njengomqobo, ithintela amanzi ukuba angangeni kwaye ngaloo ndlela ikhusela ukubopha. Oku kubaluleke kakhulu kwiindawo ezifumileyo ezifana nezindlu zangasese kunye neekhitshi, apho amanqanaba okufuma aphezulu.
1.5 Ukwakhiwa kunye namaxesha okuvula:
Iimpawu ze-rheological zeepolymers eziphinda zichithwe zidlala indima ebalulekileyo ekusebenzeni kakuhle kwe-tile adhesives. Zinceda ukugcina ukuhambelana okufanelekileyo nokuqinisekisa ukusetyenziswa okulula. Ukongeza, i-polymer ephinda ichithwe inceda ukwandisa ixesha lokuvula kwe-adhesive, inika abafaki ixesha elaneleyo lokulungisa indawo ye-tile ngaphambi kokuba i-adhesive iseti.
2. Iseli:
2.1 Inkcazo kunye neentlobo:
I-Cellulose yi-polymer yendalo ephuma kwiindonga zeeseli zezityalo kwaye idla ngokusetyenziswa njengesongezelelo kwi-adhesives zethayile. Ii-ether ze-Cellulose, ezifana ne-methylcellulose (MC) kunye ne-hydroxyethylcellulose (HEC), zisetyenziswa rhoqo ngenxa yeempawu zazo zokugcina amanzi kunye nokuqina kwazo.
2.2 Ukugcinwa kwamanzi:
Omnye wemisebenzi ephambili ye-cellulose kwi-adhesives zethayile kukukwazi kwayo ukugcina amanzi. Olu phawu lwandisa ixesha lokuvula kwe-adhesive, ngaloo ndlela lwandisa ukusebenziseka kwayo. Xa i-cellulose ifunxa amanzi, yenza isakhiwo esifana nejeli esithintela i-adhesive ukuba yome ngokukhawuleza ngexesha lokusetyenziswa.
2.3 Ukuphucula ukuqhubekeka kokusebenza kunye nokumelana nokuwa:
I-Cellulose iphucula ukusebenza kakuhle kwe-adhesive yethayile ngokuthintela ukugoba ngexesha lokusetyenziswa ngokuthe nkqo. Isiphumo sokuqina kwe-cellulose sinceda i-adhesive igcine imo yayo eludongeni, iqinisekisa ukuba iithayile zinamathela ngokulinganayo ngaphandle kokuwa.
2.4 Nciphisa ukuncipha:
I-cellulose inokunciphisa ukushwabana kwe-adhesive yethayile ngexesha lenkqubo yokomisa. Oku kubaluleke kakhulu kuba ukushwabana okugqithisileyo kunokukhokelela ekwakhiweni kwe-voids kunye nee-cracks, okuphazamisa ukuthembeka kwe-bond iyonke.
2.5 Impembelelo kumandla okutsalwa:
Izincamathelisi zethayile zine-cellulose ukuze zonyuse amandla azo okutsalwa. Oku kubaluleke kakhulu kwiindawo ezithwaxwa yimithwalo enzima okanye uxinzelelo, njengoko kunceda ekuqineni nasekusebenzeni komphezulu wethayile.
3. Isiphumo sokusebenzisana kwepolymer ephinda inyibilike kunye ne-cellulose:
3.1 Ukuhambelana:
Iipolymers eziphinda zichithwe kunye ne-cellulose zihlala zikhethwa ngenxa yokuhambelana kwazo nezinye izithako kwifomyula ye-adhesive yethayile. Oku kuhambelana kuqinisekisa umxube ofanayo ophucula iingenelo zesongezo ngasinye.
3.2 Indibaniselwano yokusebenzisana:
Ukudibanisa i-polymer ephinda inyibilike kunye ne-cellulose kuvelisa isiphumo sokusebenzisana ekubopheleleni. Iifilimu eziguquguqukayo ezenziwe ngee-polymers eziphinda inyibilike zincedisa iipropati zokugcina amanzi kunye nokwenza i-cellulose ibe nkulu, nto leyo ephumela kwi-glue eqinileyo, eqinileyo nesebenzisekayo.
3.3 Ukusebenza okuphuculweyo:
I-polymer ephinda inyibilike kunye ne-cellulose xa zidibene ziphucula ukusebenza kwe-adhesive yethayile, zibonelela ngokunamathela okungcono, ukuguquguquka, ukumelana namanzi, ukucutshungulwa kunye nokuqina. Olu dibaniso luluncedo kakhulu kwaye lubalulekile kwiindlela ezifuna ukubophelela okuthembekileyo nokuhlala ixesha elide.
Ukufaka iipolymers eziphinda zichithwe kunye ne-cellulose kwiiglu zethayile yindlela enobuchule neqinisekisiweyo kushishino lokwakha. Ezi zongezo zidlala indima ebalulekileyo ekuphuculeni ukunamathela, ukuguquguquka, ukumelana namanzi, ukuqhubekeka nokusebenza kunye nokuqina ixesha elide. Ukusebenzisana phakathi kweepolymers eziphinda zichithwe kunye ne-cellulose kubangela ukuba kubekho iifomyula ezincamathelayo ezihlangabezana neemfuno ezifunekayo zeprojekthi zokwakha zanamhlanje. Njengoko ubuchwepheshe kunye nophando luqhubeka luhambela phambili, kulindeleke ukuba kubekho ezinye izinto ezintsha kwindawo yokuncamathela kwethayile, kugxininiswe ngakumbi ekuphuculeni ukusebenza kunye nokuzinza kwezi zixhobo zokwakha zibalulekileyo.
Ixesha leposi: Disemba-26-2023