IHydroxyethyl Cellulose (HEC) iyinhlanganisela ye-polymer engeyona i-ionic encibilika emanzini isakhiwo sayo samakhemikhali siguqulwa sisuka ku-cellulose ngokusabela kwe-hydroxyethylation. I-HEC inezindawo ezinhle zokuncibilika kwamanzi, ukuqina, ukumisa, ukuhlanganisa, ukusabalalisa kanye nezakhiwo zefilimu, ngakho-ke isetshenziswa kabanzi ezintweni zokwakha, ukumboza, amakhemikhali nsuku zonke kanye nemboni yokudla. Ezimbotsheni zenjoloba ezifakwe ngokushesha ezifakwe isifutho ze-asphalt ezingangeni manzi, ukwethulwa kwe-hydroxyethyl cellulose kungathuthukisa kakhulu ukumelana nokushisa kwayo.
1. Izakhiwo eziyisisekelo ze-hydroxyethyl cellulose
I-Hydroxyethylcellulose inamandla asebenzayo okuqina kanye nokwenza ifilimu emanzini, okuyenza ibe ukuqina okufanelekile kwezinhlobonhlobo zezingubo ezisekelwe emanzini. Yandisa kakhulu i-viscosity kapende ngokwenza izibopho ze-hydrogen nama-molecule amanzi, okwenza inethiwekhi yama-molecule amanzi iqine. Lesi sakhiwo sibaluleke kakhulu ekugqokeni okungangeni manzi, njengoba i-viscosity ephezulu isiza i-coating igcine isimo sayo nokuqina ngaphambi kokuphulukisa, iqinisekisa ukuvumelana kwefilimu nokuqhubeka.
2. Indlela yokuthuthukisa ukumelana nokushisa
2.1 Khulisa ukuzinza kwama-coatings
Ukuba khona kwe-hydroxyethyl cellulose kungathuthukisa ukuzinza okushisayo kwezingubo ze-asphalt zenjoloba. I-viscosity kapende ngokuvamile iyehla lapho amazinga okushisa enyuka, futhi i-hydroxyethyl cellulose ibambezela le nqubo futhi igcina izici ezibonakalayo zikapende. Lokhu kungenxa yokuthi iqembu le-hydroxyethyl ku-molecule ye-HEC lingakha inethiwekhi ehlangene ngokomzimba nezinye izingxenye ekugqokeni, okuthuthukisa ukuzinza okushisayo kwefilimu yokugqoka futhi kwenza kube lula ukugcina isakhiwo esihle nokusebenza ngaphansi kwezimo zokushisa eziphakeme.
2.2 Thuthukisa izakhiwo zemishini yefilimu yokuhlanganisa
Izakhiwo zemishini yefilimu yokugqoka, njengokuguquguquka, amandla okuqina, njll., kuthinta ngokuqondile ukusebenza kwayo ngaphansi kwezimo zokushisa eziphezulu. Ukwethulwa kwe-HEC kungathuthukisa izakhiwo zemishini yefilimu yokugqoka, okubangelwa ikakhulukazi umphumela wayo wokuqina okwenza ifilimu yokugqoka ibe denser. Isakhiwo sefilimu esicwebezelayo asigcini nje ukuthuthukisa ukumelana nokushisa, kodwa futhi sithuthukisa ikhono lokumelana nokucindezeleka ngokomzimba okubangelwa ukunwetshwa kwangaphandle kokushisa nokunciphisa, ukuvimbela ukuqhekeka noma ukuxebuka kwefilimu yokugqoka.
2.3 Thuthukisa ukunamathela kwefilimu yokuhlanganisa
Ngaphansi kwezimo zokushisa eziphakeme, izigqoko ezingenawo amanzi zijwayele ukuchithwa noma ukuxebuka, okubangelwa ikakhulukazi ukunamathela okwanele phakathi kwe-substrate nefilimu yokugqoka. I-HEC ingathuthukisa ukunamathela kokugqoka ku-substrate ngokuthuthukisa ukusebenza kokwakhiwa kanye nezakhiwo zefilimu zokugqoka. Lokhu kusiza i-coating igcine ukuxhumana okuseduze ne-substrate emazingeni okushisa aphezulu, ukunciphisa ingozi yokuxebuka noma i-delamination.
3. Idatha yokuhlola kanye nezicelo ezingokoqobo
3.1 Idizayini yokuhlola
Ukuze uqinisekise umthelela we-hydroxyethyl cellulose ekumelaneni nokushisa kwe-asphalt yenjoloba efafazwayo ebeka ngokushesha inamathela engangeni manzi, uchungechunge lokuhlola lungaklanywa. Esivivinyweni, okuqukethwe okuhlukile kwe-HEC kungangezwa ekuhlanganisweni okungangeni manzi, bese ukuzinza kokushisa, izakhiwo zemishini kanye nokunamathela kwe-coating kungahlolwa ngokuhlaziywa kwe-thermogravimetric (TGA), ukuhlaziywa kwe-thermomechanical (DMA) kanye nokuhlolwa kwe-tensile.
3.2 Imiphumela yokuhlolwa
Imiphumela yokuhlola ibonisa ukuthi ngemva kokwengeza i-HEC, izinga lokushisa elimelana nokushisa le-coating landa kakhulu. Eqenjini lokulawula ngaphandle kwe-HEC, ifilimu yokugqoka yaqala ukubola ku-150 ° C. Ngemva kokwengeza i-HEC, izinga lokushisa elingamelana nefilimu yokumboza lenyuke laya ngaphezu kuka-180°C. Ukwengeza, ukwethulwa kwe-HEC kwandisa amandla okuqina kwefilimu yokugqoka cishe ngama-20%, kuyilapho ukuhlolwa kokucwenga kubonisa ukuthi ukunamathela kokugqoka ku-substrate kukhuphuke cishe ngo-15%.
4. Izicelo zobunjiniyela kanye nezinyathelo zokuphepha
4.1 Isicelo sobunjiniyela
Ezisetshenziswa ezingokoqobo, ukusetshenziswa kwe-hydroxyethyl cellulose kungathuthukisa kakhulu ukusebenza kokwakhiwa kanye nokusebenza kokugcina kokufuthwa kwenjoloba ye-asphalt engangeni manzi emiswe ngokushesha. Lokhu kufakwa okuguquliwe kungasetshenziswa emikhakheni efana nokwakha ukuvikela amanzi, ukuvikela amanzi ngobunjiniyela bangaphansi komhlaba, kanye ne-anticorrosion yamapayipi, futhi ifaneleka ngokukhethekile izidingo zokuvikela amanzi ezindaweni ezishisa kakhulu.
4.2 Izinyathelo zokuqapha
Nakuba i-HEC ingathuthukisa kakhulu ukusebenza kwezingubo zokugqoka, umthamo wayo udinga ukulawulwa ngokufanele. I-HEC eyeqile ingase ibangele ukuba i-viscosity ye-coating ibe phezulu kakhulu, ithinte ukusebenza kokwakhiwa. Ngakho-ke, ekwakhiweni kwefomula yangempela, umthamo we-HEC kufanele uthuthukiswe ngokuhlolwa ukuze kuzuzwe ukusebenza okuhle kakhulu kokumboza kanye nomthelela wokwakha.
I-Hydroxyethyl cellulose ithuthukisa ngempumelelo ukumelana nokushisa kwezigqoko zenjoloba ezifafazwa ngokushesha ezifakwe emanzini ngokwandisa i-viscosity ye-coating, ithuthukise izakhiwo zemishini yefilimu yokuhlanganisa, kanye nokwenza ngcono ukunamathela kokunamathela. Idatha yokuhlola kanye nezicelo ezisebenzayo zibonisa ukuthi i-HEC inemiphumela ebalulekile ekuthuthukiseni ukuzinza kokushisa nokuthembeka kwezingubo. Ukusetshenziswa okunengqondo kwe-HEC akukwazi nje ukuthuthukisa ukusebenza kokwakhiwa kwezingubo zokugqoka, kodwa futhi kwandise kakhulu impilo yesevisi yezingubo ezingenamanzi ezindaweni zokushisa okuphezulu, ukunikeza imibono emisha nezindlela zokuthuthukiswa kwezinto zokwakha ezingenamanzi.
Isikhathi sokuthumela: Jul-08-2024