Thickerer waa wax lagu daro biyaha ku salaysan oo caadi ah oo inta badan la isticmaalo. Ka dib marka lagu daro dhumucdiisuna, waxay kordhin kartaa viscosity ee nidaamka daahan, taas oo ka hortagaysa walxaha cufan ee daahan in ay degaan. Ma jiri doonto ifafaale hoos u dhacsan sababtoo ah viscosity ee rinji oo aad u dhuuban. Waxaa jira noocyo badan oo ka mid ah alaabooyinka dhumucyada, iyo noocyada kala duwan ee alaabooyinka waxay leeyihiin mabaadi' dhumuc kala duwan oo loogu talagalay hababka kala duwan ee dahaarka. Waxaa jira qiyaas ahaan afar nooc oo dhumucyada caadiga ah: dhumucyada poliurethane, dhumucyada akriliga, dhumucyada aan noolaha lahayn iyo dhumucyada dhumucda cellulose.
1. Habka dhumucda ee dhumucda poliurethane associative
Astaamaha qaabdhismeedka ee dhumucyada associative polyurethane waa lipophilic, hydrophilic iyo lipophilic polymers tri-block, oo leh kooxaha dhamaadka lipophilic ee labada daraf, badiyaa kooxaha hydrocarbon aliphatic, iyo qayb biyo-milmi polyetylen glycol dhexda. Ilaa iyo inta ay jirto qadar ku filan oo dhumucdiisuna tahay nidaamka, nidaamku wuxuu samayn doonaa qaabdhismeedka guud ee shabakada.
Nidaamka biyaha, marka xoojinta dhumucdiisu ay ka weyn tahay feejignaanta micele ee muhiimka ah, kooxaha dhamaadka lipophilic waxay isku xiraan si ay u sameeyaan miceles, dhumucduna waxay sameeyaan qaab dhismeedka shabakad iyada oo loo marayo ururka micelles si loo kordhiyo viscosity ee nidaamka.
Nidaamka cinjirka, dhumucdiisu kaliya ma samayn karto urur iyada oo loo marayo lipophilic terminal micelles, laakiin waxa ka sii muhiimsan, kooxda lipophilic terminal ee dhumucda ayaa lagu dhejiyaa dusha sare ee qaybta cinjirka. Marka laba kooxood oo dhamaadka lipophilic ah lagu dhejiyo qaybo kala duwan oo cinjirka ah, molecule dhumucdiisu waxay sameeyaan buundooyin u dhexeeya qaybaha.
2. Habka dhumucda ee polyacrylic acid alkali dhumucda bararka
Dhumucda bararka alkali ee polyacrylic acid waa emulsion copolymer ah oo iskutallaab ah, copolymer-ku wuxuu u jiraa qaab aashito ah iyo qaybo aad u yar, muuqaalku waa caano cad, viscosity waa mid aad u hooseeya, wuxuuna leeyahay xasillooni wanaagsan xagga galmada pH hoose, oo aan la milmi karin. biyaha dhexdiisa. Marka wakiilka alkaline lagu daro, waxay isu beddeshaa kala firidh cad oo aad u barari leh.
Saamaynta dhumucda polyacrylic acid alkali dhumucda bararka ayaa la soo saaraa iyada oo la baabi'inayo kooxda karboxilic acid hydroxide; marka wakiilka alkali lagu daro, kooxda karboksylic acid ee aan si fudud ionized ayaa isla markiiba loo beddelaa ammonium carboxylate ionized ama birta Foomka cusbada, saamaynta dib-u-celinta elektrostatic ayaa laga soo saaraa xarunta anion ee silsiladda copolymer macromolecular, si iskutallaabta Silsiladda makromolecular kopolymer-linked waxay fidaysaa oo si degdeg ah u fidaysaa. Natiijadu tahay kala dirida deegaanka iyo bararka, qaybta asalka ah ayaa badatay marar badan waxaana si weyn u kordhay viscosity. Mar haddii aan la kala diri karin isku-xidhka isku-xidhka, kopolymer-ka ku jira qaabka milixda waxa loo tixgalin karaa inuu yahay kala firdhiso kopolymer kaas oo qaybihiisa ay aad u weyn yihiin.
Dhumucyada aashitada polyacrylic waxay leeyihiin saameyn dhumuc wanaagsan, xawli dhumuc degdeg ah, iyo xasilooni bayooloji oo wanaagsan, laakiin waxay u nugul yihiin pH, caabbinta biyaha liidata, iyo dhalaal hooseeya.
3. Habka dhumucdiisuna waxay ka mid yihiin dhumucyada inorganic
Dhumucyada aan orgaaniga ahayn inta badan waxaa ka mid ah bentonite, attapulgite, iwm Si kastaba ha noqotee, maadaama bentonite uu yahay budo aan dabiici ahayn oo leh iftiin wanaagsan oo nuugaya, waxay si weyn u yareeyn kartaa dhalaalka dusha sare ee filimka dahaarka waxayna u dhaqmaan sida wakiilka matting. Sidaa darteed, marka la isticmaalayo bentonite rinjiga cinjirka dhalaalaya, dareenka waa in la bixiyaa si loo xakameeyo qiyaasta. Nanotechnology waxa ay xaqiiqsatay nanoscale ee walxaha aan orgaaniga ahayn, waxa kale oo ay siisay dhumucyo aan dabiici ahayn oo leh waxyaabo cusub.
Habka dhumucdiisuna waxay tahay mid aad u adag. Waxaa guud ahaan la rumeysan yahay in diidmada u dhaxaysa eedeymaha gudaha ay kordhiso viscosity ee rinjiga. Sababtoo ah heerkeeda liidata, waxay saameyneysaa dhalaalka iyo hufnaanta filimka rinjiga. Waxaa guud ahaan loo isticmaalaa Primer ama rinji dhisme sare.
4. Habka dhumucda ee dhumucda cellulose
Dhumucyada cellulose waxay leeyihiin taariikh dheer oo horumar ah waxayna sidoo kale yihiin dhumucyo aad loo isticmaalo. Marka loo eego qaab-dhismeedka molecular, waxay u qaybsan yihiin hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, carboxymethyl cellulose, iwm, taas oo inta badan loo isticmaalo hydroxyethyl cellulose (HEC).
Habka dhumucdiisuna ee dhumucda cellulose inta badan waa in la isticmaalo silsiladda weyn ee hydrophobic on ay qaabdhismeedka si ay u sameeyaan bond bonds hydrogen biyo, iyo isla mar ahaantaana la falgalaan kooxaha kale ee cirifka qaab dhismeedkeeda si loo dhiso qaab-dhismeedka shabakad saddex-cabbir ah iyo kordhinta mugga rheological. ee polymerka. , xaddido dhaqdhaqaaqa xorta ah ee polymer-ka, taas oo kordhinaysa viscosity ee daahan. Marka xoogga dhogorta la isticmaalo, qaab-dhismeedka shabakadda saddex-geesoodka ah waa la burburiyaa, isku-xidhka hydrogen ee u dhexeeya molecules ayaa baaba'a, iyo viscosity ayaa hoos u dhacaya. Marka xoogga dhogorta laga saaro, curaarta hydrogen ayaa dib loo sameeyaa, iyo qaab dhismeedka shabakada saddex-geesoodka ah ayaa dib loo aasaasay, taas oo hubinaysa in dahaarka uu yeelan karo sifooyin wanaagsan. sifooyinka rheological.
Dhumucyada Cellulosic waxay qani ku yihiin kooxaha hydroxyl iyo qaybaha hydrophobic ee qaab-dhismeedkooda. Waxay leeyihiin hufnaan dhumuc sare leh oo aan xasaasi u ahayn pH. Si kastaba ha ahaatee, sababtoo ah caabbinta biyaha liidata oo saameeya heerka filimka rinjiga, way sahlan yihiin Saamaynta xaalufka microbial iyo cilladaha kale, dhumucda cellulose ayaa inta badan loo isticmaalaa adkeynta rinjiga cinjirka.
Habka diyaarinta daahan, doorashada dhumucdiisuna waa in si buuxda u tixgeliyo arrimo badan, sida waafaqsan nidaamka, viscosity, xasiloonida kaydinta, waxqabadka dhismaha, kharashka iyo arrimo kale. Dhumucyo badan ayaa la isku dari karaa oo loo isticmaali karaa in lagu siiyo ciyaar buuxda faa'iidooyinka dhumuc kasta, oo si macquul ah loo xakameeyo kharashka iyada oo la raacayo shuruudaha waxqabadka lagu qanacsan yahay.
Waqtiga boostada: Mar-02-2023