Buufinta dahaarka biyaha ee caagga ah ee degdega ah waa dahaar biyo-celin ah oo ku salaysan biyaha. Haddii diaphragm-ka aan si buuxda loo ilaalin ka dib buufinta, biyuhu si buuxda uma uumi doonaan, xumbo hawo oo cufanna si fudud ayay u soo muuqan doonaan inta lagu jiro dubista heerkulka sare, taasoo keenta khafiifinta filimka biyaha-celinaya, iyo iska caabbinta biyaha-celin la'aanta, ka-hortagga miridhka, iyo cimilada. Sababtoo ah xaaladaha deegaanka dayactirka ee goobta dhismaha badanaa lama xakamayn karo, waa lama huraan in la hagaajiyo iska caabbinta heerkulka sare ee dahaarka biyaha-celin la'aanta ee caagga ah ee si degdeg ah u buufinaya marka laga eego dhinaca qaabaynta.
Ether cellulose-ka biyaha ku milma ayaa la xushay si loo hagaajiyo iska caabbinta heerkulka sare ee agabka biyaha ka ilaaliya asfaltka caagga ah ee si degdeg ah u buufinaya. Isla mar ahaantaana, saameynta nooca iyo xaddiga ether-ka cellulose ee sifooyinka farsamada, waxqabadka buufinta, iska caabbinta kulaylka iyo kaydinta dahaarka biyaha ka ilaaliya asfaltka caagga ah ee si degdeg ah u buufinaya ayaa la bartay. Saamaynta waxqabadka.
Diyaarinta muunadda
Ku milmi hydroxyethyl cellulose 1/2 biyo la dhalaaliyay, walaaq ilaa ay gebi ahaanba milmaan, ka dibna ku dar emulsifier iyo sodium hydroxide biyaha soo haray ee la dhalaaliyay 1/2 oo si siman u walaaq si aad u diyaariso xal saabuun ah, ugu dambayntiina, isku qas kuwa kor ku xusan. Labada xal ayaa si siman loogu qasaa si loo helo xal biyood ah oo ah hydroxyethyl cellulose, qiimaha pH-na waxaa lagu xakameeyaa inta u dhaxaysa 11 iyo 13.
Isku qas asfalt emulsified, latex neoprene, xal biyood oo hydroxyethyl cellulose ah, defoamer, iwm. iyadoo loo eegayo saamiga gaarka ah si loo helo walax A.
Diyaari xoogaa gaar ah oo ah xalka biyaha ee Ca(NO3)2 sida walxaha B.
Adeegso qalab gaar ah oo koronto ku buufin ah si aad walxaha A iyo walxaha B ugu buufiso warqadda sii deynta isku mar, si labada walxood loo xidhiidhi karo oo si dhakhso ah loogu shubi karo filim inta lagu jiro habka isdhaafka.
Natiijooyinka iyo doodda
Hydroxyethyl cellulose oo leh dheellitirnaan dhan 10,000 mPa·s iyo 50,000 mPa·s ayaa la doortay, habka ku darista ka dib ayaa la qaatay si loo barto saameynta dheellitirka iyo xaddiga ku darista hydroxyethyl cellulose ee waxqabadka buufinta ee dahaarka biyaha ee caagga ah ee degdega ah, sifooyinka sameeya filimka, iska caabbinta kulaylka, sifooyinka farsamada iyo sifooyinka kaydinta. Si looga fogaado dhaawaca ku yimaada dheelitirka nidaamka oo ay keento ku darista xalka hydroxyethyl cellulose, taasoo keentay burburinta, emulsifier iyo nidaamiyaha pH ayaa lagu daray intii lagu jiray diyaarinta xalka hydroxyethyl cellulose.
Saamaynta Viscosity-ga Hydroxyethyl Cellulose (HEC) ee Buufinta iyo Sifooyinka Samaynta Filimada ee Dahaarka Biyo-mareenka
Inta uu le'eg yahay nuugista hydroxyethyl cellulose (HEC), ayaa saameynta weyn ku yeelanaysa sifooyinka buufinta iyo sameynta filimada ee dahaarka biyaha aan biyuhu gelin. Marka qaddarka lagu daro uu yahay 1‰, HEC oo leh nuugista 50 000 mPa·s waxay ka dhigaysaa nuugista nidaamka dahaarka biyaha aan biyuhu gelin Marka la kordhiyo 10 jeer, buufintu aad bay u adag tahay, nuugistana si daran ayay u yaraataa, halka HEC oo leh nuugista 10 000 mPa·s aysan saameyn yar ku lahayn buufinta, nuugistana asal ahaan way yaraataa.
Saamaynta Hydroxyethyl Cellulose (HEC) ee iska caabbinta kulaylka ee dahaarka biyaha celiya
Dahaarka biyaha ee caagga ah ee si degdeg ah u buufinaya ee biyaha ka ilaaliya ayaa lagu buufiyay xaashida aluminiumka si loo diyaariyo muunadda tijaabada iska caabbinta kulaylka, waxaana lagu daaweeyay iyadoo la raacayo xaaladaha bogsashada ee dahaarka biyaha ka ilaaliya biyaha ee ku salaysan biyaha ee ku xusan heerka qaranka ee GB/T 16777-2008. hydroxyethyl cellulose oo leh viscosity 50 000 mPa·s wuxuu leeyahay miisaan molecular oo aad u weyn. Marka laga soo tago dib u dhigista uumiga biyaha, waxay sidoo kale leedahay saameyn xoojin ah, taasoo ka dhigaysa mid adag in biyuhu ka soo baxaan gudaha dahaarka, sidaas darteed waxay soo saari doontaa barar weyn. Miisaanka molecular ee hydroxyethyl cellulose oo leh viscosity 10 000 mPa·s waa yar yahay, kaas oo saameyn yar ku leh xoogga walxaha mana saameynayo isbeddelka biyaha, sidaa darteed ma jiro wax soo saar xumbo ah.
Saamaynta xaddiga hydroxyethyl cellulose (HEC) ee lagu daray
Hydroxyethyl cellulose (HEC) oo leh viscosity 10,000 mPa·s ayaa loo xushay shayga cilmi-baarista, waxaana la baaray saamaynta ku darista kala duwan ee HEC ee waxqabadka buufinta iyo iska caabbinta kulaylka ee dahaarka biyaha aan biyuhu gelin. Marka la eego waxqabadka buufinta, iska caabbinta kulaylka iyo sifooyinka farsamada ee dahaarka biyaha aan biyuhu gelin, waxaa loo arkaa in xaddiga ugu habboon ee lagu daro hydroxyethyl cellulose uu yahay 1‰.
Latex-ka neoprene ee ku jira dahaarka biyaha ee caagga ah ee si degdeg ah u dejiya ee la buufiyay iyo laastikada emulsified waxay leeyihiin farqi weyn oo u dhexeeya polarity iyo cufnaanta, taasoo keenta in walxaha A ay kala daadanayaan muddo gaaban gudaheed inta lagu jiro kaydinta. Sidaa darteed, inta lagu jiro dhismaha goobta, waxay u baahan tahay in si siman loo walaaqo ka hor inta aan la buufin, haddii kale si fudud ayay u horseedi doontaa shilal tayo leh. Hydroxyethyl cellulose waxay si wax ku ool ah u xallin kartaa dhibaatada kala daadashada ee dahaarka biyaha ee laastikada caagga ah ee si degdeg ah u dejiya. Hal bil ka dib kaydinta, weli ma jirto kala daadasho. Dheefshiidka nidaamku wax badan isma beddelo, xasillooniduna waa wanaagsan tahay.
diiradda
1) Ka dib marka hydroxyethyl cellulose lagu daro dahaarka biyaha ee caagga ah ee si degdeg ah u buufinaya, iska caabbinta kulaylka ee dahaarka biyaha ayaa si weyn loo hagaajiyaa, dhibaatada xumbo cufan oo dusha sare ee dahaarka ah ayaa si weyn loo hagaajiyaa.
2) Iyada oo la tixgelinayo in aysan saameyn ku yeelan habka buufinta, waxqabadka sameynta filimada iyo sifooyinka farsamada ee walxaha, cellulose hydroxyethyl waxaa lagu go'aamiyay inay tahay cellulose hydroxyethyl oo leh dheellitir dhan 10 000 mPa·s, qaddarka lagu darayna wuxuu ahaa 1‰.
3) Ku darista hydroxyethyl cellulose waxay hagaajisaa xasilloonida kaydinta ee dahaarka biyaha ee caagga ah ee si degdeg ah u buufinaya ee biyaha celiya, mana jirto wax dildilaac ah oo dhaca ka dib kaydinta muddo hal bil ah.
Waqtiga boostada: Maajo-29-2023