Rinjiga Dhagaxa Dhabta ah oo leh Ether Cellulose

Saamaynta qaddarka ether cellulose, cufnaanta molecular qaraabo iyo habka wax ka beddelka ee ku saabsan ifafaale biyo-nuugidda iyo caddaynta ee rinjiga dhagaxa dhabta ah ayaa laga wada hadlay, iyo ether ether cellulose leh caabbinta biyaha-cadaynta ugu fiican ee rinjiga dhagax dhabta ah ayaa la baaray, iyo waxqabadka dhamaystiran ee rinjiga dhagaxa dhabta ah ayaa la qiimeeyaa ogaanshaha.

Erayada muhiimka ah:rinji dhagax dhab ah;caabbinta nadiifinta biyaha;ether cellulose

0,Hordhac

Dhabarka dhagaxa dhabta ah waa dahaar dhismeed oo ka samaysan granite dabiiciga ah, dhagax la jajabiyey iyo budada dhagaxa ah, emulsion resin synthetic oo ah walxo saldhig ah oo lagu kabo waxyaabo kala duwan.Waxay leedahay qaabka iyo saameynta qurxinta ee dhagaxa dabiiciga ah.Mashruuca qurxinta dibadda ee dhismayaasha dhaadheer, waxaa doorbidaya inta badan milkiilayaasha iyo dhisayaasha.Si kastaba ha noqotee, maalmaha roobka, nuugista biyaha iyo caddeynta waxay noqdeen khasaare weyn oo rinjiga dhagaxa dhabta ah.Inkasta oo ay jirto sabab weyn oo loo yaqaan 'emulsion', marka lagu daro tiro badan oo ah walxaha hydrophilic sida ether cellulose waxay si weyn u kordhisaa nuugista biyaha ee filimka rinjiga dhabta ah.Daraasaddan, laga bilaabo gacmaha etherka cellulose, saameynta qadarka ether cellulose, miisaanka molecular qaraabo ah iyo nooca wax ka beddelka ee ku saabsan ifafaalaha biyaha-nuugista iyo caddeynta ee rinjiga dhagaxa dhabta ah ayaa la falanqeeyay.

1. Habka nuugista biyaha iyo nadiifinta rinjiga dhagaxa dhabta ah

Ka dib markii rinjiga dhabta ah ee dhagaxa ah la qalajiyo, waxay u nugul tahay in la caddeeyo marka ay la kulmaan biyaha, gaar ahaan marxaladda hore ee qalajinta (12h).Cimilada roobka leh, dahaarka ayaa noqon doona mid jilicsan oo caddaan ah ka dib markii uu roobku dhaqay muddo dheer.Sababta koowaad ayaa ah in emulsion-ku uu nuugo biyaha, tan labaadna waxaa keena walxaha hydrophilic sida ether cellulose.Eter-ka Cellulose wuxuu leeyahay shaqooyinka dhumucda iyo haynta biyaha.Sababtoo ah isku-dhafka macromolecules, qulqulka xalku wuu ka duwan yahay dheecaanka Newtonian, laakiin wuxuu muujinayaa dabeecad isbeddelaya isbeddelka xoogga xiiridda, taas oo ah, waxay leedahay thixotropy sare.Hagaajinta waxqabadka dhismaha ee rinjiga dhagaxa dhabta ah.Cellulose waxa uu ka kooban yahay D-glucopyranosyl (anhydroglucose), iyo qaaciido kelliyadeed oo fudud waa (C6H10O5) n.Eter cellulose waxaa soo saara kooxda hydroxyl aalkolada cellulose iyo alkyl halide ama wakiilka kale ee etherification hoos xaaladaha alkaline.Qaab dhismeedka ether-ka ee Hydroxyethyl cellulose, celceliska tirada kooxaha hydroxyl ee lagu beddelay reagents halkii cutub anhydroglucose ah oo ku taal silsiladda molecular cellulose waxaa loo yaqaan heerka beddelka, kooxaha 2, 3, iyo 6 hydroxyl dhammaantood waa la beddelay, heerka ugu sarreeya ee beddelka waa 3 Kooxaha hydroxyl ee bilaashka ah ee ku jira silsiladda molecular ee ether-ka cellulose waxay la falgali karaan si ay u sameeyaan bonds hydrogen, sidoo kale waxay la falgalaan biyaha si ay u sameeyaan bonds hydrogen.Nuugista biyaha iyo haynta biyaha ee ether cellulose waxay saameyn toos ah ku leedahay nuugista biyaha iyo nadiifinta rinjiga dhagaxa dhabta ah.Nuugista biyaha iyo waxqabadka haynta biyaha ee ether cellulose waxay kuxirantahay heerka beddelka cellulose, beddelka iyo heerka polymerization ee etherka cellulose laftiisa.

2. Qaybta tijaabada ah

2.1 Qalabka tijaabada iyo qalabka

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2.2 Qaaciddada tijaabada ah

2.3 Habka tijaabada

Ku dar biyo, foamer, bakteeriyad, barafka ka hortagta, gargaarka filim samaynta, cellulose, pH regulatorer iyo emulsion firdhiiyaha sida waafaqsan qaacidada si aad si siman u kala firdhiso, ka dibna ku dar ciid midab leh oo si fiican u walaaq, ka dibna isticmaal qadar ku habboon dhumucdiisuna waxay hagaajinaysaa viscosity. , si siman u kala firdhi, oo hel rinjiga dhagaxa dhabta ah.

Samee looxa leh rinji dhagax ah oo dhab ah, oo samee tijaabada nadiifinta biyaha ka dib markaad daaweyso 12 saacadood (ku dhex geli biyaha ilaa 4 saacadood).

2.4 Imtixaanka waxqabadka

Sida laga soo xigtay JG / T 24-2000 "Synthetic Resin Emulsion Sand Wall Rinjiga", tijaabada waxqabadka ayaa la sameeyaa, iyadoo diiradda la saarayo caabbinta biyaha caddeynta ee noocyada kala duwan ee hydroxyethyl cellulose ether rinji dhagax dhab ah, iyo tilmaamayaasha kale ee farsamada waa inay buuxiyaan shuruudaha.

3. Natiijooyinka iyo doodaha

Marka loo eego sifooyinka waxqabadka ee ether hydroxyethyl cellulose ether, saamaynta qadarka ether hydroxyethyl cellulose ether, miisaanka molecular qaraabo iyo habka wax ka beddelka on caabbinta biyaha-caddayn ee rinjiga dhagax dhabta ah ayaa si xoog leh loo bartay.

3.1 Saamaynta qiyaasta

Marka la kordhiyo qiyaasta ether hydroxyethyl cellulose ether, caabbinta biyaha ee rinjiga dhagaxa dhabta ah ayaa si tartiib tartiib ah u sii xumaanaya.Qadarka weyn ee ether cellulose, tirada badan ee kooxaha hydroxyl lacag la'aan ah, badan oo biyo ah ayaa samayn doona bond bonds hydrogen iyada, heerka nuugista biyaha ee filimka rinjiga dhabta ah ayaa kordhin doona, iyo caabbinta biyaha hoos u dhigi doonaa.Biyaha badan ee filimka rinjiga ah, way fududahay in la caddeeyo dusha sare, markaa caabbinta biyaha ayaa ka sii daran.

3.2 Saamaynta cufka molecular qaraabo

Marka qadarka ether-ka hydroxyethyl cellulose ee leh cufnaanta molecular ee kala duwan waa isku mid.Marka ay sii weynaato cufka molecular ee qaraabada ah, way ka sii xumaanaysaa caabbinta biyaha ee rinjiga dhagaxa dhabta ah, taas oo muujinaysa in miisaanka molecular ee qaraabada ah ee hydroxyethyl cellulose ether uu saameyn ku leeyahay caabbinta biyaha ee rinjiga dhagaxa dhabta ah.Tani waa sababta oo ah curaarta kiimikada> bonds hydrogen> van der Waals xooga, weynaanta cufka molecular ee ether cellulose, taas oo ah, weynaanta heerka polymerization, curaarta kiimikaad badan oo ay sameeyeen isku dhafka unugyada gulukooska, iyo weynaanta xoogga isdhexgalka ee nidaamka oo dhan ka dib markii la sameeyo bonds hydrogen biyo , xoog nuugista biyaha iyo awoodda haynta biyaha, ka sii daran caabbinta biyaha caddeeyo rinjiga dhagaxa dhabta ah.

3.3 Saamaynta habka wax ka beddelka

Natiijooyinka imtixaanku waxay muujinayaan in wax ka beddelka nonionic hydrophobic uu ka fiican yahay kan asalka ah, iyo beddelka anionic waa kan ugu xun.Non-ionic hydrophobically modified cellulose ether, by meerto kooxaha hydrophobic on silsilad molecular ee eter cellulose.Isla mar ahaantaana, dhumucda wajiga biyaha waxaa lagu gaaraa iyada oo loo marayo isku xidhka hydrogen ee biyaha iyo silsiladda unugyada unugyada.Waxqabadka hydrophobic ee nidaamka waa la dhimay, si waxqabadka hydrophobic ee rinjiga dhagaxa dhabta ah la wanaajiyo, iyo caabbinta biyaha ayaa la hagaajiyaa.Anionically modified cellulose ether waxaa wax ka beddelaya cellulose iyo polyhydroxysilicate, taas oo hagaajinaysa waxtarka dhumucda, waxqabadka anti-sag iyo waxqabadka anti-splash ee ether cellulose, laakiin ay ionicity waa xoog badan, iyo nuugista biyaha iyo awoodda haynta waa la wanaajiyey , The biyaha caabbinta caddeeyo. rinjiga dhagaxa dhabta ah ayaa ka sii dara.

4. Gabagabo

Nuugista biyaha iyo caddeynta rinjiga dhagaxa dhabta ah waxaa saameeya arrimo badan sida qadarka ether cellulose iyo habka wax ka beddelka ee cufka molecular qaraabo.Nuugista biyaha iyo caddaynta rinjiga dhagaxa dhabta ah.