Sifaynta Hydroxyethyl cellulose

Sifaynta eeHydroxyethyl cellulose(HEC) waxay ku lug leedahay habaynta alaabta ceeriin si loo hagaajiyo nadiifnimadeeda, joogtaynta, iyo sifooyinka codsiyada gaarka ah. Halkan waxaa ah dulmar guud oo ku saabsan habka sifaynta ee HEC:

1. Xulashada Qalabka Ceyriinka:

Habka sifaynta wuxuu ka bilaabmaa xulashada cellulose tayo sare leh sida alaabta ceeriin. Cellulose waxaa laga soo saari karaa ilo kala duwan, sida saxarka alwaax, suufka suufka, ama qalabyada kale ee dhirta ku salaysan.

2. Nadiifinta:

Maaddada cellulose-ka ceyriinka ah ayaa lagu sifeeyaa si looga saaro wasakhda sida lignin, hemicellulose, iyo qaybaha kale ee aan unugyadu ahayn. Habkan nadiifinta ayaa caadi ahaan ku lug leh dhaqidda, bleaching, iyo daaweynta kiimikaad si kor loogu qaado nadiifnimada cellulose.

3. Etherification:

Nadiifinta ka dib, cellulose kiimikaad ayaa loo beddelaa iyada oo loo marayo etherification si loogu soo bandhigo kooxaha hydroxyethyl ee laf dhabarta cellulose, taasoo keentay samaynta Hydroxyethyl Cellulose (HEC). Dareen-celinta etherification waxay caadi ahaan ku lug leedahay isticmaalka biraha alkali hydroxides iyo ethylene oxide ama chlorohydrin ethylene.

4. Dhexdhexaadinta iyo Dhaqidda:

Etherification ka dib, isku darka falcelinta waa dhexdhexaad si meesha looga saaro alkali xad-dhaaf ah oo la hagaajiyo pH. Alaabta dhexdhexaadka ah ayaa markaa si fiican loo dhaqaa si looga saaro kiimikooyinka haraaga ah iyo alaabta ka soo baxda falcelinta.

5. Sifeynta iyo qalajinta:

Xalka HEC ee la safeeyey waa la miiray si looga saaro wixii haray ee walxaha adag ama wasakhda. Sifeynta ka dib, xalka HEC ayaa laga yaabaa in la saaro, haddii loo baahdo, ka dibna la qalajiyo si loo helo budada ugu dambeysa ama qaabka granular ee HEC.

6. Xakamaynta tayada:

Inta lagu jiro habka sifaynta, tallaabooyinka xakamaynta tayada ayaa lafuliyaa si loo hubiyo joogtaynta, nadiifnimada, iyo waxqabadka alaabta HEC. Tijaabada xakamaynta tayada waxa ka mid noqon kara cabirka viscosity, falanqaynta miisaanka kelli, go'aaminta nuxurka qoyaanka, iyo falanqaynta kale ee jidhka iyo kiimikaad.

7. Baakadaha iyo Kaydinta:

Marka la sifeeyo, badeecada HEC waxa lagu xidhaa weelal ama bacaha ku haboon kaydinta iyo gaadiidka. Baakadaha saxda ah ayaa ka caawiya HEC ka ilaalinta wasakhda, qoyaanka, iyo arrimaha kale ee deegaanka ee saameeya tayada.

Codsiyada:

Refined Hydroxyethyl Cellulose (HEC) waxay ka heshaa codsiyo badan oo ku saabsan warshadaha kala duwan, oo ay ku jiraan:

• Dhisidda: Waxa loo isticmaalaa sidii dhumuc, beddele rheology, iyo wakiilka biyaha haynta ee alaabta sibidhka ku salaysan, rinjiyada, dahaarka, iyo xabagta.
• Daryeelka Shakhsi ahaaneed iyo Waxyaabaha la isku qurxiyo: Waxaa loo isticmaalaa sidii dhumuc, xasiliye, iyo filim hore loogu jiray kareemyada, kiriimyada, shaambooyinka, iyo alaabta kale ee daryeelka shakhsi ahaaneed.
• Dawaynta: Waxa loo isticmaalaa sidii xidhe, kala daadsan, iyo wakiilka siidaynta la xakameeyey ee kiniiniyada dawooyinka, kaabsalka, iyo hakinta afka.
• Cunto: Waxaa loo shaqeeyaa sidii dhumuc weyn, emulsifier, iyo xasiliye ee alaabta cuntada sida suugada, dhaymada, iyo waxyaabaha caanaha laga sameeyo.

Gabagabo:

Sifeynta Hydroxyethyl Cellulose (HEC) waxay ku lug leedahay dhowr tillaabo oo lagu nadiifinayo oo wax looga beddelayo walxaha celeloose-ka ceyriinka ah, taasoo keentay polymer wax-qabad badan oo kala duwan leh oo kala duwan oo codsiyo ah oo laga helo warshadaha sida dhismaha, daryeelka shakhsi ahaaneed, dawooyinka, iyo cuntada. Habka sifaynta ayaa hubinaya joogteynta, nadiifnimada, iyo tayada alaabta HEC, taas oo awood u siinaysa isticmaalkeeda qaabab iyo alaabooyin kala duwan.