Sidee looga sameeyaa chether chether?

Soosaarka kaynta qaacista kahortaga ayaa ku lug leh wax ka badalida unugyada kiimikada dabiiciga ah, sida caadiga ah laga soo qaatay saxanka alwaax ama suufka, iyada oo loo marayo jawaab celin kiimikaad oo taxane ah. Noocyada ugu caansan ee kantaroolka kantaroolka waxaa ka mid ah methyl bylulose (MC), hydroxyetyl ​​cellulose (HECROXPropyl (HYDROXYPROPLYLE (HIRMC), HIPMC), Gaariga sanduuqyada (HIPMC), iyo kuwa kale. Hawsha saxda ah waxay ku kala duwanaan kartaa iyadoo lagu saleynayo qolka unugyada gaarka ah ee loo yaqaan 'chert-ka gaarka ah la soo saaray, laakiin talaabooyinka guud waa isku mid. Waa tan guud ahaan dulmar guud:

Talaabooyinka guud ee samaynta maraakiibta unugyada:

1. Isha cellulose:

• Qalabka bilowga waa unug dabiici ah, oo badanaa laga helo alwaax alwaax ama cudbi ah. Cellulose caadiyan waa qaabka saxarada unugyada nadiifinta ee nadiifka ah.

2. Alallization:

• Cellulose waxaa lagu daaweeyaa xalka alkaline, sida sodium hydroxide (Nabiga), si ay ugu dhaqaaqaan kooxaha hydroxyl ee silsiladda unugyada. Tallaabadan aqalka leh ayaa muhiim u ah helitaanka dheeraad ah ee la sii wado.

3.

• Unugyada unugyada alkalized-ka ah waxaa lagu soo xiray, halkaas oo lagu soo bandhigo kooxo laf-dhabarta laf-dhabarka. Nooca gaarka ah ee kooxda Ether ee la soo bandhigay (methyl, hydroxytyl, hydroxypropyl, gaarigabymethyl, iwm.) Waxay kuxirantahay chether-ka la doonayo.
• Habka loo soo saleeyahay wuxuu ku lug leeyahay falcelinta cellulose ee regag-ka ku habboon, sida:
  • Loogu talagalay beyrka methyl bylulose (MC): Daaweynta 'Dithtyl Sulfate' ama methyl chloride.
  • Loogu talagalay hydroxytyl cellulose (HEC): Daaweynta ethylenenenenene-ka oxide.
  • Wixii loogu talagalay hydroxypropyl bylulose (HPMC): Daaweynta Propylone Ogeysiis iyo Methyl chloride chloride.
  • Loogu talagalay carbobsytytyl cellulose (cmc): Daaweynta sodium chloroacetate.

4. Kala-saaridda iyo maydhista:

• Ka dib markii la xidhnaa, ka dhalata ka dhalata ka dhasha unugyada cellulose ayaa sida caadiga ah looga takhalusaa si looga saaro wixii haraaga ah ee haraaga ah. Shayga ayaa markaa kadib la dhaqi karaa si loo baabi'iyo ciladaha iyo alaabada.

5. Qalajinta iyo dhajinta:

• Cilmiga unugyada ayaa la qalajiyey si looga saaro qoyaanka xad-dhaafka ah ka dibna ku milmay budo ganaax ah. Cabbirka walxaha waa la xakameyn karaa iyadoo lagu saleynayo dalabka loogu talagalay.

6. Xakamaynta Tayada:

• Wax soosaarka ugu dambeeya ee ka-hortagga 'Ether Ether' wuxuu ku socdaa tijaabooyinka xakameynta tayada tayada si loo hubiyo inuu buuxiyo faahfaahin gaar ah, oo ay kujirto viscosity, oo ay kujirto qoyaan, qeybinta tirada walxaha, iyo guryaha kale ee la xiriira.

Waxaa muhiim ah in la ogaado in soosaarka anshax-gacmeedyada unugyada ay fuliyaan soosaarayaasha takhasuska leh ee adeegsanaya hanaanka la xakameeyo. Xaaladaha gaarka ah, reagilas, iyo qalab loo isticmaalo waxay ku kala duwanaan karaan iyadoo lagu saleynayo astaamaha la doonayo ee chether chether iyo arjiga loogu talagalay. Intaa waxaa sii dheer, tillaabooyinka amniga waa lama huraan inta lagu jiro hanaannada wax-ka-beddelka kiimikada.