Ukufutha ungqimba olungangeni manzi lwe-asphalt yerabha esheshisayo kuyingubo esuselwe emanzini. Uma i-diaphragm ingagcinwanga ngokugcwele ngemva kokufutha, amanzi ngeke aphele ngokuphelele, futhi amabhamuza omoya aminyene azovela kalula ngesikhathi sokubhaka okushisa okuphezulu, okuholela ekunciphiseni ifilimu engangeni manzi, kanye nokumelana okungangeni manzi, ukulwa nokugqwala, kanye nesimo sezulu. Ngenxa yokuthi izimo zendawo yokulungisa endaweni yokwakha zivame ukungalawuleki, kubalulekile ukuthuthukisa ukumelana nokushisa okuphezulu kwengubo engangeni manzi ye-asphalt yerabha esheshisayo esheshisayo ngokombono wokwakheka.
I-cellulose ether encibilikayo emanzini ikhethiwe ukuthuthukisa ukumelana nokushisa okuphezulu kwezinto zokuvimbela amanzi ezifakwe irabha ezisheshayo. Ngesikhathi esifanayo, imiphumela yohlobo kanye nenani le-cellulose ether ezimpahleni zemishini, ukusebenza kokufutha, ukumelana nokushisa kanye nokugcinwa kwezingubo ezingangeni manzi zerabha ezifakwa irabha ezisheshayo zafundwa.
Ukulungiselela isampula
Ncibilikisa i-hydroxyethyl cellulose ku-1/2 wamanzi acwebezelwe, uvuselele kuze kube yilapho incibilika ngokuphelele, bese ufaka i-emulsifier kanye ne-sodium hydroxide emanzini asele angu-1/2 acwebezelwe bese uvuselela ngokulinganayo ukulungiselela isisombululo sensipho, bese ekugcineni, hlanganisa okungenhla. Izixazululo ezimbili zixutshwe ngokulinganayo ukuthola isisombululo samanzi se-hydroxyethyl cellulose, futhi inani layo le-pH lilawulwa phakathi kuka-11 no-13.
Hlanganisa i-asphalt emulsified, i-neoprene latex, isixazululo samanzi se-hydroxyethyl cellulose, i-defoamer, njll. ngokwesilinganiso esithile sokuthola izinto A.
Lungisa ukuhlushwa okuthile kwesisombululo samanzi se-Ca(NO3)2 njengezinto ze-B.
Sebenzisa imishini ekhethekile yokufafaza kagesi ukuze ufafaze into A kanye nento B ephepheni lokukhulula ngasikhathi sinye, ukuze izinto ezimbili zikwazi ukuthintwa futhi zifakwe ngokushesha efilimini ngesikhathi senqubo yokuphambanisa.
Imiphumela nengxoxo
I-Hydroxyethyl cellulose ene-viscosity engu-10 000 mPa·s kanye no-50 000 mPa·s yakhethwa, futhi indlela yokwengeza ngemva kokufaka yamukelwa ukuze kufundwe imiphumela ye-viscosity kanye nenani lokwengeza le-hydroxyethyl cellulose ekusebenzeni kokufutha kwe-asphalt yerabha esheshayo yokubeka amanzi, izakhiwo zokwakha ifilimu, ukumelana nokushisa, izakhiwo zemishini kanye nezakhiwo zokugcina. Ukuze kugwenywe umonakalo wokulinganisela kwesistimu okubangelwa ukwengezwa kwesisombululo se-hydroxyethyl cellulose, okuholela ekususweni kwe-mulsification, kwenezelwa i-emulsifier kanye nomlawuli we-pH ngesikhathi sokulungiselela isisombululo se-hydroxyethyl cellulose.
Ithonya Lokuqina Kwe-Hydroxyethyl Cellulose (HEC) Ekufuthweni Nasekwakheni Amafilimu Ezembozo Ezingangeni Manzi
Uma i-viscosity ye-hydroxyethyl cellulose (HEC) inkulu, kulapho umthelela omkhulu khona ezimpahleni zokufafaza nokwakha ifilimu zezingubo ezingangeni manzi. Uma inani layo lokwengeza lingu-1‰, i-HEC ene-viscosity engu-50 000 mPa·s yenza i-viscosity yesistimu yokumboza engangeni manzi. Uma ikhuliswa izikhathi eziyi-10, ukufutha kuba nzima kakhulu, futhi i-diaphragm iyancipha kakhulu, kuyilapho i-HEC ene-viscosity engu-10 000 mPa·s ingenawo umthelela omkhulu ekufutheni, futhi i-diaphragm iyancipha ngokujwayelekile.
Umphumela we-Hydroxyethyl Cellulose (HEC) ekumelaneni nokushisa kwezimbozo ezingangeni manzi
Isembozo esingangeni manzi se-asphalt yerabha esifafazwayo esisheshayo sifafazwe ephepheni le-aluminium ukuze kulungiselelwe isampula yokuhlola ukumelana nokushisa, futhi saphiliswa ngokwezimo zokupholisa zesembozo esingangeni manzi se-asphalt esisekelwe emanzini esichazwe ku-GB/T standard kazwelonke 16777-2008. I-hydroxyethyl cellulose ene-viscosity engu-50 000 mPa·s inesisindo esikhulu sama-molecule. Ngaphezu kokulibazisa ukuhwamuka kwamanzi, futhi inomphumela othile wokuqinisa, okwenza kube nzima ngamanzi ukuhwamuka ngaphakathi kwesembozo, ngakho-ke izokhiqiza amaqhubu amakhulu. Isisindo sama-molecule se-hydroxyethyl cellulose ene-viscosity engu-10 000 mPa·s sincane, esinomthelela omncane emandleni ezinto futhi asithinti ukuguquguquka kwamanzi, ngakho-ke akukho ukukhiqizwa kwama-bubble.
Umphumela wenani le-hydroxyethyl cellulose (HEC) elingeziwe
I-Hydroxyethyl cellulose (HEC) ene-viscosity engu-10 000 mPa·s yakhethwa njengenhloso yocwaningo, futhi imiphumela yokwengezwa okuhlukene kwe-HEC ekusebenzeni kokufutha kanye nokumelana nokushisa kwezingubo ezingangeni manzi yahlolwa. Uma kucatshangelwa ukusebenza kokufutha, ukumelana nokushisa kanye nezakhiwo zemishini zezingubo ezingangeni manzi ngokuphelele, kubhekwa ukuthi inani elifanele lokwengeza le-hydroxyethyl cellulose lingu-1‰.
I-latex ye-neoprene esembozweni esingangeni manzi se-asphalt yerabha efafazwayo esheshayo kanye ne-asphalt emulsified zinomehluko omkhulu ku-polarity kanye nobuningi, okuholela ekuhlukaniseni izinto A ngesikhathi esifushane ngesikhathi sokugcina. Ngakho-ke, ngesikhathi sokwakhiwa endaweni Kudingeka kuxutshwe ngokulinganayo ngaphambi kokuba kufakwe, ngaphandle kwalokho kuzoholela kalula ezingozini zekhwalithi. I-Hydroxyethyl cellulose ingaxazulula ngempumelelo inkinga yokuhlukanisa izimbozo ezingangeni manzi ze-asphalt yerabha efafazwayo esheshayo. Ngemva kwenyanga eyodwa yokugcina, akusekho ukuhlukaniswa. I-viscosity yesistimu ayishintshi kakhulu, futhi ukuzinza kuhle.
ukugxila
1) Ngemva kokuthi i-hydroxyethyl cellulose ingeziwe embozweni ongangenisi manzi we-asphalt yerabha efafazwa ngokushesha, ukumelana nokushisa kwembozo engangenisi manzi kuyathuthuka kakhulu, futhi inkinga yamabhamuza aminyene ebusweni bembozo ithuthuka kakhulu.
2) Ngaphansi kwesisekelo sokungathinti inqubo yokufafaza, ukusebenza kokwakha ifilimu kanye nezakhiwo zemishini, i-hydroxyethyl cellulose yatholakala ukuthi iyi-hydroxyethyl cellulose ene-viscosity engu-10 000 mPa·s, futhi inani lokwengeza lalingu-1‰.
3) Ukwengezwa kwe-hydroxyethyl cellulose kuthuthukisa ukuzinza kokugcinwa kwesembozo esingangeni manzi se-asphalt yerabha esifuthwayo esisheshayo, futhi akukho ukususwa kwe-delanitation okwenzekayo ngemva kokugcinwa inyanga eyodwa.
Isikhathi sokuthunyelwe: Meyi-29-2023