Duufaanta (oo sidoo kale loo yaqaan walxaha dusha sare ku shaqeeya) waa kaaliyeyaal kiimiko oo aan laga maarmi karin horumarinta warshadaha iyo beeraha, iyadoo faa'iidada laga helayo natiijooyin muhiim ah oo leh qiyaas yar. Gaar ahaan ka dib Dagaalkii Labaad ee Adduunka, iyadoo la horumarinayo warshadaha batroolka, warshadaha surfactant-ka ee si xawli ah u soo baxaya ayaa sii xoojiyay isticmaalka surfactants-ka ee dhinacyo kala duwan, sida batroolka, dharka, sunta cayayaanka, daaweynta caafimaadka, birta, macdan qodista, mishiinnada, dhismaha, waddooyinka, duulista, cuntada, ilaalinta deegaanka, dhaqidda iyo rinjiyeynta, iwm. Maqaalkani wuxuu diiradda saari doonaa soo bandhigida isticmaalka surfactants-ka sida emulsifiers-ka asfalt-ka ee injineernimada waddooyinka waaweyn.
1. QeexitaankaDaawaynta hawada
Dadku waxay ku ogaadeen dhaqanka wax soo saarka muddada dheer in xalalka qaar ka mid ah walxaha ay si weyn u beddeli karaan sifooyinka dusha sare ee dareeraha xitaa marka ay aad u hooseeyaan, taasoo ka dhigaysa kuwo ku habboon shuruudaha wax soo saarka qaarkood, sida yareynta xiisadda dusha sare ama xiisadda isdhaafka ah ee dareeraha, kordhinta qoyaanka, saabuunta, sifooyinka emulsifying iyo xumbada, iwm. Saabuunta, oo inta badan loo isticmaalo nolol maalmeedka, waa mid ka mid ah walxahaas. Astaamo caan ah oo ka mid ah walxaha sida saabuunta ayaa ah in ku darista xaddi yar biyaha ay si weyn u yareyn karto xiisadda dusha sare ee biyaha.
Horumarka sayniska iyo tignoolajiyada iyo horumarinta wax soo saarka, dadku waxay sameeyeen cilmi-baaris qoto dheer oo ku saabsan sifooyinka iyo shaqooyinka walxahaas waxayna si sax ah u bixiyeen qeexitaannada surfactants. Taasi waa, surfactant waa walax kiimiko ah oo si weyn u yarayn karta xiisadda dusha sare (ama xiisadda is-dhexgalka dareeraha ah) ee dareeraha (badanaa biyaha) marka aad u yar tahay, beddesho xaaladda dusha sare ee nidaamka, taasoo soo saarta saameyn taxane ah sida qoynta iyo ka hortagga qoynta, emulsification iyo demulsification, kala firdhinta iyo xinjirowga, xumbo iyo defoaming, iyo milmida.
2. Astaamaha qaab-dhismeedka ee walxaha surfactants
Moleekulada dusha sare waxay ka kooban yihiin laba qaybood oo leh sifooyin gebi ahaanba kala duwan: qayb waa kooxda lipophilic (oo sidoo kale loo yaqaan kooxda hydrophobic) oo leh xiriir saliid, qaybta kalena waa kooxda hydrophilic (oo sidoo kale loo yaqaan kooxda oleophobic) oo leh xiriir biyo. Astaantan qaab-dhismeedka ee surfactants waxay sababtaa, marka ay ku milmaan biyaha, kooxaha hydrophilic inay soo jiitaan molecules-ka biyaha, halka kooxaha lipophilic ay dib u celiyaan molecules-ka biyaha. Si ay uga gudbaan xaaladdan aan degganayn, waa inay qabsadaan dusha sare ee dareeraha, iyadoo kooxaha lipophilic ay ku fidsan yihiin jawiga kooxaha hydrophilic-na ay ku fidsan yihiin biyaha.
In kasta oo astaamaha qaab-dhismeedka molecules-ka surfactant ay tahay inay yihiin molecules amphiphilic ah, haddana dhammaan molecules-ka amphiphilic ma aha surfactants. Kaliya walxaha amphiphilic-ga leh oo leh qayb ku filan oo lipophilic ah ayaa ah surfactants.
Tusaale ahaan, taxanaha milixda sodium-ka dufanka leh, isku-dhisyo leh tiro yar oo atamka kaarboon ah (sida sodium formate, sodium acetate, sodium propionate, sodium butyrate, iwm.) dhammaantood waxay leeyihiin kooxo lipophilic iyo hydrophilic ah waxayna leeyihiin firfircooni dusha sare ah, laakiin uma shaqeeyaan sidii saabuun sidaas darteedna looguma yeeri karo surfactants. Kaliya marka tirada atamka kaarboonku ay kordho ilaa xad ayay asiidhyada dufanka leh ee sodium-ku muujiyaan firfircooni dusha sare ah waxayna leeyihiin sifooyinka guud ee saabuunta. Inta badan saliidaha iyo dufanka dabiiciga ah ee xayawaanka iyo dhirta waa esters-ka asiidhka dufanka leh oo ka kooban 10 ilaa 18 atamka kaarboon. Haddii asiidhyadani lagu daro koox hydrophilic ah, waxay noqon doonaan surfactants leh heer lipophilicity iyo hydrophilicity ah, waxayna leeyihiin milmi wanaagsan.
3. Codsiga walxaha sunta ah ee ku jiraInjineeriyadda Waddooyinka waaweyn
3.1.Daawaynta iyoEmulsifiers-ka laamiga ah
Emulsifier-ka Asphalt waa nooc ka mid ah walxaha surfactant-ka. Emulsifiers-ka iyo saabuunta waxay wadaagaan sifooyin sida adsorptivity, jihada, awoodda ay u leeyihiin sameynta ion-yada colloidal, iyo awoodda ay u leeyihiin inay yareeyaan xiisadda is-dhexgalka. Si kastaba ha ahaatee, maadaama ay tahay emulsifier, waxay sidoo kale u baahan tahay inay yeelato sifooyin sameynta filimada. Gaar ahaan emulsifiers-ka asfalt-ka, waxay u baahan yihiin inay leeyihiin alkanes leh silsilad kaarboon oo ku habboon si ay si fiican ugu milmaan asfalt-ka.
3.2.Kala soocidda emulsifiers-ka asfalt-ka
Emulsifiers-ka waxaa loo kala saaraa noocyo ionic iyo non-ionic ah iyadoo lagu saleynayo in kooxaha hydrophilic-ga ee molecules-ka emulsifier-ku ay qaadaan kharashyo marka emulsifiers-ku ay ku milmaan biyaha. Emulsifiers-ka ionic-ga waxaa loo sii qaybiyaa noocyada cationic, anionic, iyo amphoteric ionic sababtoo ah kala duwanaanshaha dallacaadaha ay qaadaan kooxahooda hydrophilic-ga ka dib ionization-ka biyaha.
Qalabka ceeriin ee emulsifier-ka asfalt-ka ee anionic waa raqiis waana la heli karaa si fudud, habka wax soo saarkuna waa mid fudud. Sidaa darteed, asfalt-ka emulsifier-ka ee ugu horreeyay ee la soo saaray wuxuu ahaa asfalt-ka anionic emulsified, kaas oo guud ahaan ah nooca dhexdhexaadka ah, waxaana sidoo kale jira noocyo gaabis ah. Waxaa loo isticmaali karaa shaabadeynta slurry, gelinta, daaweynta dusha sare, iwm. Inkasta oo emulsifiers-ka anionic ay leeyihiin faa'iidooyin qiimo leh, waxay saameyn weyn ku leeyihiin sifooyinka asalka ah ee asfalt-ka, dhibaatooyin badanna way dhacaan inta lagu jiro habka dhismaha. Sidaa darteed, marka la adeegsanayo, waxaa lagama maarmaan ah in la tixgeliyo saamaynta dhammaystiran ee kharashka, saameynta dhismaha iyo tayada dhismaha.
Cemulsifier-ka iyo kuwa kaleaInkasta oo ay soo baxday goor dambe, haddana ku-dhaqanku wuxuu muujiyay inuu si fiican ugu dheggan yahay agabyo macdan oo kala duwan, oo leh xawaare degdeg ah, xoog hore oo sarreeya, iyo qiyaas yar. Ma aha oo kaliya inay siiso faa'iidooyinka emulsifiers anionic laakiin sidoo kale waxay magdhabaysaa cilladahooda, taasoo soo jiidatay dareen badan tan iyo markii la sameeyay. Emulsifiers-ka asfalt-ka ee cationic waxay leeyihiin noocyo kala duwan iyo habab kala soocid oo kala duwan. Badanaa waxaa loo kala saaraa iyadoo loo eegayo qaab-dhismeedkooda kiimikada, kuwa caadiga ahna waxaa ugu badan yihiin amines-ka alkyl, cusbada birta quaternary, amines-ka lignin, imidazolines, iwm.
Molecules-ka Zwitterionic emulsifier waxay ka kooban yihiin kooxo aashito iyo kuwa aasaasi ah labadaba, waxayna si fudud u sameeyaan "cusbo gudaha ah". Astaamaha xalalka biyaha ee emulsifiers-ka zwitterionic waa in dallacaadda koronto ay isbeddesho iyadoo kala duwanaansho ku timaado qiimaha pH. Waxay leeyihiin awood xooggan oo kala firdhinta kalsiyum ah oo ku jirta biyaha adag iyo iswaafajin wanaagsan oo ay la leeyihiin noocyada kale ee emulsifiers-ka, laakiin qiimahoodu waa mid aad u sarreeya.
Inta badan emulsifiers-ka aan ionic ahayn waxaa laga helaa falgalka ethylene oxide oo leh iskudhisyo ay ku jiraan hydrogen firfircoon (sida phenols, alcohols, carboxylic acids, amines, iwm.). Hawlahoodu ma aha oo kaliya kooxaha alkyl ee hydrophobic laakiin sidoo kale dhererka silsiladaha polyoxyethylene. Waxay leeyihiin firfircooni sare oo dusha sare ah, xasillooni, iyo awood emulsifying wanaagsan, waxay muujiyaan iswaafajin wanaagsan oo ay la leeyihiin emulsifiers kale iyo waxyaabaha lagu daro, waxayna leeyihiin saameyn chelating ah oo ku saabsan ion-yada birta. Hawlgalkoodu wuu ka madax bannaan yahay qiimaha pH ee xalka, emulsion-kana wuxuu ka samaysan yahay Heerkulka Wajiga ee Wajiga (PIT) ayaa ah kan ugu xasilloon.
3.3.Mabda'a shaqada ee emulsifiers-ka asfalt-ka
Marka isku-darka emulsifier-ku uu aad u hooseeyo, waxaa jira molecules emulsifier aad u yar. Isku-xirka hawada iyo biyaha, waa wax aan macquul ahayn in tiro badan oo molecules emulsifier ah ay ku ururaan. Dusha sare, waxay ku dhowdahay inay si toos ah ula xiriirto hawada iyo biyaha, xiisadda dusha sarena waxay ku dhowdahay inay isbeddesho, wali waxay u dhowdahay xiisadda dusha sare ee biyaha saafiga ah.
Marka xaddiga emulsifier-ku si habboon u kordho, molecules-ka emulsifier-ku si dhakhso ah ayay ugu ururaan dusha sare ee biyaha, taasoo yaraynaysa aagga taabashada hawada iyo biyaha, taasoo keenta in xiisadda dusha sare ay si degdeg ah hoos ugu dhacdo.
Marka isku-darka emulsifier-ka uu sii kordho oo uu gaaro qiimo gaar ah, tiro badan oo molecules emulsifier ah ayaa ku urura dusha sare ee xalka biyaha, iyagoo sameeya filim monomolecular ah oo daboolaya dusha sare ee xalka, kaas oo gebi ahaanba ka soocaya xalka biyaha hawada oo dejiya xiisadda dusha sare. Haddii isku-darka emulsifier-ka si yar loo kordhiyo, molecules emulsifier-ku mar dambe kuma ururin karaan dusha sare ee biyaha, laakiin waxay iskood isugu geeyaan micelles ama micellar aggregates iyadoo kooxaha lipophilic-ga ay gudaha u jeedaan kooxaha hydrophilic-na ay dibadda u jeedaan. Isu-geynta ugu yar ee micelles ama micellar aggregates ay bilaabayaan inay sameysmaan waxaa badanaa loo yaqaan Critical Micelle Concentration (CMC).
Ka dib marka la gaaro heerka muhiimka ah ee micelle, haddii heerka emulsifier-ku uu sii kordho, xiisadda dusha sare mar dambe ma yaraan doonto. Maadaama filim monomolecular ah uu durba ka sameysmay dusha sare, molecules-ka emulsifier-ku waxay u muuqdaan inay isku milmaan oo ay isku soo dhawaadaan, iyagoo sii wada inay isku ururaan micelles, taasoo keenta in tirada micelles-ka ku jira emulsion-ku ay si joogto ah u kordho.
Emulsification-ka asfaltku waa qayb muhiim ah oo ka mid ah ficilka emulsifying. Ka dib marka lagu daro emulsifier xalka saliidda iyo biyaha, labada kooxood ee emulsifier-ku waxay isu diyaariyaan si jiho ah, iyagoo isku xiraya labada isku xir ee saliidda iyo biyaha, taasoo ka hortagaysa inay is celiyaan. Ka dib marka la walaaqo oo la kala firdhiyo, asfaltku si deggan ayuu ugu firdhi karaa biyaha qaab walxo yaryar ah.
Gunaanad
Tusaale ahaan, maqaalkani wuxuu bixinayaa hordhac dhammaystiran iyo falanqayn ku saabsan astaamaha qaab-dhismeedka, mabaadi'da shaqada, iyo xaaladda codsiga ee surfactants. Surfactants waxay si wax ku ool ah u yareyn karaan xiisadda dusha sare ee biyaha, waxay si xooggan u nuugaan molecules-ka surfactant-ka ee is-dhexgalka kale ee kala duwan, badanaana waxay leeyihiin heer gaar ah oo nuugista jihada ah. Waa nuugista jihada ah ee u suurtagelisa surfactants inay yeeshaan shaqooyin badan sida emulsification, demulsification, xumbadaynta, kala firdhinta, xinjirowga, iyo qoynta. Emulsifiers-ka asfalt waxay u shaqeeyaan iyagoo adeegsanaya saameynta emulsifying ee surfactants. Hadday tahay aragtida waxqabadka dhaqaalaha ama ilaalinta deegaanka, dhismaha qabowga waxaa hubaal ah inuu yahay isbeddel muhiim ah oo ku yimaada horumarinta injineernimada waddooyinka waaweyn qarniga 21aad, emulsifiers-kuna waa udub-dhexaadka tignoolajiyadan. Cilmi-baarista iyo horumarinta waxqabadka emulsifier hubaal waxay yeelan doontaa saameyn weyn oo ku saabsan dhismaha qabow.
Waqtiga boostada: Maarso-31-2026