Ukufafaza i-asphalt ye-asphalt engangeni manzi yokusetha okusheshayo i-coating esekelwe emanzini. Uma i-diaphragm inganakekelwa ngokugcwele ngemva kokufafaza, amanzi ngeke ahwamuke ngokuphelele, futhi amabhamuza omoya aminyene azovela kalula ngesikhathi sokubhaka okunezinga lokushisa eliphezulu, okuholela ekuncipheni kwefilimu engangeni manzi, nokungenwa amanzi kahle, ukugqwala, nokumelana nesimo sezulu. . Ngenxa yokuthi izimo zemvelo zokunakekela endaweni yokwakhiwa ngokuvamile azilawuleki, kubalulekile ukuthuthukisa ukumelana nezinga lokushisa okuphezulu okufuthwayo okufafazwa ngenjoloba ye-asphalt engangeni manzi ngokombono wokwakheka.
I-ether ye-cellulose encibilikayo emanzini yakhethwa ukuze kuthuthukiswe izinga lokushisa eliphakeme lokumelana nezinga lokushisa elifuthwe ngokushesha lezinto zokuvikela i-asphalt zenjoloba. Ngesikhathi esifanayo, imiphumela yohlobo kanye nenani le-cellulose ether ezindaweni zemishini, ukusebenza kokufafaza, ukumelana nokushisa kanye nokugcinwa kokufafaza i-asphalt ye-asphalt engenamanzi yokubeka i-rubber esheshayo. umthelela wokusebenza.
Ukulungiselela isampula
Chaza i-hydroxyethyl cellulose ku-1/2 yamanzi e-deionized, ugovuze ize ichitheke ngokuphelele, bese ufaka i-emulsifier ne-sodium hydroxide emanzini asele e-1/2 ahlanjululwe bese ugoqa ngokulinganayo ukuze ulungiselele isisombululo sensipho, futhi ekugcineni, hlanganisa okungenhla. ixutshwe ngokulinganayo ukuze kutholwe isixazululo esinamanzi se-hydroxyethyl cellulose, futhi inani layo le-pH lilawulwa phakathi kuka-11 no-13.
Hlanganisa i-asphalt e-emulsified, i-neoprene latex, i-hydroxyethyl cellulose isixazululo samanzi, i-defoamer, njll. ngokwesilinganiso esithile ukuze uthole impahla engu-A.
Lungiselela ukuhlangana okuthile kwesixazululo samanzi se-Ca(NO3)2 njengento engu-B.
Sebenzisa okokusebenza okukhethekile okufutha ngogesi ukufafaza into engu-A kanye nento engu-B ephepheni lokukhulula ngesikhathi esisodwa, ukuze kuthintwa izinto ezimbili futhi kusethwe ngokushesha kube yifilimu ngesikhathi senqubo yokuphambana kwe-athomu.
Imiphumela nengxoxo
I-Hydroxyethyl cellulose ene-viscosity engu-10 000 mPa·s kanye ne-50 000 mPa·s yakhethwa, futhi indlela yokwengeza yamukelwa ukuze kufundwe imiphumela ye-viscosity kanye nenani elingeziwe le-hydroxyethyl cellulose ekusebenzeni kokufafaza kokusetha okusheshayo. i-asphalt yenjoloba engangeni manzi, izakhiwo zefilimu, ukumelana nokushisa, izakhiwo zemishini kanye nezindawo zokugcina. Ukuze ugweme ukulimala kwebhalansi yesistimu okubangelwa ukwengezwa kwesisombululo se-hydroxyethyl cellulose, okuholela ekukhishweni kwe-demulsification, i-emulsifier kanye nesilawuli se-pH ngesikhathi sokulungiswa kwesisombululo se-hydroxyethyl cellulose.
Ithonya le-Viscosity ye-Hydroxyethyl Cellulose (HEC) Ekufutheni kanye Nezakhiwo Ezenza Ifilimu Yezingubo Ezingangeni Manzi
Uma kukhulu i-viscosity ye-hydroxyethyl cellulose (HEC), kuba mkhulu umthelela ezicini zokufafaza nezakha ifilimu zezingubo ezingangeni emanzini. Lapho inani layo elingeziwe liyi-1 ‰, i-HEC ene-viscosity ye-50 000 mPa · s yenza i-viscosity yesistimu yokugqoka engangeni manzi Uma inyuswa izikhathi ezingu-10, ukufafaza kuba nzima kakhulu, futhi i-diaphragm iyancipha kakhulu, kuyilapho i-HEC ine-viscosity. ye-10 000 mPa·s inomphumela omncane ekufuleni, futhi i-diaphragm ishwabana ngokwejwayelekile.
Umthelela we-Hydroxyethyl Cellulose (HEC) Ekumelaneni Nokushisa Kwezingubo Ezingangeni Manzi
I-asphalt ye-asphalt engangeni manzi efakwe ngokushesha efakwe ngokushesha yafafazwa eshidini le-aluminium ukuze kulungiswe isampula yokuhlola ukumelana nokushisa, futhi yelashwa ngokuvumelana nezimo zokuphulukisa ze-asphalt engenamanzi ehlanganiswe emanzini ebalulwe ku-GB/T 16777-kazwelonke evamile. 2008. I-hydroxyethyl cellulose ene-viscosity engu-50 000 mPa·s inesisindo samangqamuzana amakhulu uma kuqhathaniswa. Ngaphandle kokulibaziseka ukuhwamuka kwamanzi, kubuye kube nomthelela othile oqinisayo, okwenza kube nzima ukuthi amanzi ahwamuke ngaphakathi kwendawo yokumboza, ngakho-ke kuzokhiqiza ama-bulges amakhulu. Isisindo samangqamuzana e-hydroxyethyl cellulose ene-viscosity ye-10 000 mPa·s sincane, esinomthelela omncane emandleni wezinto ezibonakalayo futhi asithinti ukuguquguquka kwamanzi, ngakho-ke asikho isizukulwane sebhamuza.
Umphumela yenani le-hydroxyethyl cellulose (HEC) elingeziwe
I-Hydroxyethyl cellulose (HEC) ene-viscosity engu-10 000 mPa·s yakhethwa njengento yocwaningo, futhi imiphumela yokwengezwa okuhlukile kwe-HEC ekusebenzeni kokufafaza kanye nokumelana nokushisa kwezimbobo ezingangeni amanzi kwaphenywa. Uma kucatshangelwa ukusebenza kokufafaza, ukumelana nokushisa kanye nezakhiwo zemishini zezingubo ezingangeni manzi ngokuphelele, kubhekwa ukuthi inani eliphelele le-hydroxyethyl cellulose liyi-1 ‰.
I-neoprene latex endaweni efafaziwe yerabha ye-asphalt engangeni manzi kanye ne-asphalt e-emulsified inomehluko omkhulu ku-polarity kanye nokuminyana, okuholela ekuqhekekeni kwempahla engu-A ngesikhathi esifushane ngesikhathi sokugcinwa. Ngakho-ke, ngesikhathi sokwakhiwa kwendawo Idinga ukunyakaziswa ngokulinganayo ngaphambi kokuba ifuthwe, ngaphandle kwalokho izoholela kalula ezingozini zekhwalithi. I-Hydroxyethyl cellulose ingaxazulula ngempumelelo inkinga ye-delamination yokufafazwa kwe-asphalt ye-asphalt engangeni manzi. Ngemva kwenyanga eyodwa yokugcina, akukabikho delamination. I-viscosity yesistimu ayishintshi kakhulu, futhi ukuzinza kuhle.
gxila
I-1) Ngemuva kokuthi i-hydroxyethyl cellulose yengezwe ekufakweni kwe-asphalt ye-asphalt esheshayo yokumisa i-rubber engangeni manzi, ukumelana nokushisa kwe-coating engangeni manzi kuthuthukiswa kakhulu, futhi inkinga yamabhamuza aminyene ebusweni be-coating ithuthukiswa kakhulu.
I-2) Ngaphansi kwesisekelo sokungathinti inqubo yokufafaza, ukusebenza kokwenza ifilimu kanye nezakhiwo zemishini yezinto ezibonakalayo, i-cellulose ye-hydroxyethyl yanqunywa ukuthi ibe yi-hydroxyethyl cellulose ene-viscosity ye-10 000 mPa · s, futhi inani elingeziwe laliyi-1 ‰.
3) Ukwengezwa kwe-hydroxyethyl cellulose kuthuthukisa ukuzinza kwesitoreji se-asphalt ye-asphalt ye-asphalt esheshayo ebeka ngokushesha ukunamathela emanzini, futhi akukho delamination okwenzeka ngemva kokugcinwa kwenyanga eyodwa.
Isikhathi sokuthumela: May-29-2023