Waa maxay hydroxyethyl cellulose?

Waa maxay hydroxyethyl cellulose?

Cellulose-ka Hydroxyethyl (HEC), huruud cad ama cirro leh, aan ur lahayn, aan sun ahayn oo adag oo ah fibrous ama budo, oo lagu diyaariyey etherification of alkaline cellulose iyo ethylene oxide (ama chlorohydrin), oo ka tirsan hidde-sideyaasha cellulose ethers ee milma ee Nonionic. Sababtoo ah HEC waxay leedahay sifooyin wanaagsan sida dhumuc, suul, kala firdhi, emulsifying, isku xidhka, sameynta filimada, ilaalinta qoyaanka iyo bixinta colloids ilaalin ah, waxaa si weyn loogu isticmaalay sahaminta saliidda, dahaarka, dhismaha, daawada iyo cuntada, dharka, sameynta waraaqaha iyo polymers. Polymerization iyo beeraha kale.

Hydroxyethyl cellulose si weyn ayaa loogu isticmaalaa warshadaha dahaarka. Aan eegno sida ay uga shaqeyso dahaarka:

Maxaa dhacaya marka hydroxyethyl cellulose ay la kulanto dahaarka biyaha ku salaysan?

Maadaama ay tahay surfactant aan ionic ahayn, cellulose hydroxyethyl waxay leedahay sifooyinka soo socda marka lagu daro dhumucda, suuxinta, xidhitaanka, sabeynta, sameynta filimada, kala firdhinta, haynta biyaha iyo bixinta kolloid ilaalin ah:

HEC waxay ku milmaysaa biyaha kulul ama qabow, mana soo daadato heerkul sare ama karkaraya, taasoo ka dhigaysa inay leedahay astaamo badan oo milmi kara iyo dheellitirnaan, iyo sidoo kale jelling aan kuleyl ahayn;

Awoodda haysashada biyaha waa labanlaab ka badan tan methyl cellulose, waxayna leedahay nidaamin socod oo wanaagsan;

Non-ionic lafteedu waxay la noolaan kartaa noocyo badan oo polymers kale oo biyaha ku milma, surfactants, iyo cusbo, waana dhumuc colloidal aad u fiican oo ka kooban xalal elektrolyt oo xoog badan;

Marka la barbar dhigo methyl cellulose iyo hydroxypropyl methyl cellulose, awoodda kala firdhinta eeHECwaa tan ugu xun, laakiin awoodda ilaalinta colloid-ka ayaa ah tan ugu xooggan.

Maadaama hydroxyethyl cellulose-ka dusha sare lagu daweeyay uu yahay budo ama fibre adag, Shandong Heda waxay ku xasuusineysaa inaad fiiro gaar ah u yeelato qodobbada soo socda marka aad diyaarineyso khamriga hydroxyethyl cellulose hooyada:

(1) Kahor iyo ka dib marka lagu daro hydroxyethyl cellulose, waa in la walaaqo ilaa xalka uu noqdo mid gebi ahaanba hufan oo cad.

(2) Waa in si tartiib tartiib ah loogu shaandheeyaa foostada isku darka, oo aan si toos ah ugu xidhin hydroxyethyl cellulose iyo hydroxyethyl cellulose foostada isku darka tiro badan ama qaab buro iyo kubbado ah.

(3) Heerkulka biyaha iyo qiimaha pH ee biyuhu waxay xiriir cad la leeyihiin kala dirista hydroxyethyl cellulose, sidaa darteed waa in fiiro gaar ah loo yeesho.

(4) Weligaa ha ku darin walxo alkaline ah isku darka ka hor inta aan budada hydroxyethyl cellulose lagu qooyin biyo. Kor u qaadista pH-ga kaliya ka dib qoynta ayaa ka caawin doonta milmida.

(5) Inta ugu macquulsan, ku dar wakiilka antifungal-ka kahor.

(6) Marka la isticmaalayo hydroxyethyl cellulose oo leh viscosity sare, heerka khamriga hooyada waa inaanu ka badnayn 2.5-3% (miisaan ahaan), haddii kale khamriga hooyada way adag tahay in la maareeyo.