Isla markiiba/Aayar u milmay Eter Cellulose (Daawaynta dusha sare)

Kala-saarista Eter-ka Cellulose

Ether Cellulose waa erey guud oo taxane ah oo badeecado ah oo ay soo saartay falcelinta cellulose alkali iyo wakiilka etherifying ee xaaladaha qaarkood. Marka alkali cellulose lagu beddelo wakiilada etherifying kala duwan, ethers cellulose kala duwan ayaa la heli doonaa.

Marka loo eego sifooyinka ionization ee beddelka, ethers cellulose waxaa loo qaybin karaa laba qaybood: ionic (sida carboxymethyl cellulose) iyo nonionic (sida methyl cellulose).

Marka loo eego nooca beddelka, etherka cellulose waxa loo qaybin karaa monoether (sida methyl cellulose) iyo ether isku dhafan (sida hydroxypropyl methyl cellulose).

Marka loo eego milanka kala duwan, waxa loo qaybin karaa milanka biyaha (sida hydroxyethyl cellulose) iyo dareeraha dareeraha organic (sida ethyl cellulose).

Ether-yada cellulose-ka ee biyaha-milmi kara ee loo isticmaalo hoobiyeyaal qallalan oo isku qasan ayaa loo qaybiyaa isla markiiba-kala-mila iyo ether-ka-daah-ku-daaweeye-ku-meel-gaar ah.

Aaway khilaafkoodii? Iyo sida si habsami leh loogu habeeyo 2% xal aqueous ah oo loogu talagalay baaritaanka viscosity?

Waa maxay daaweynta dusha sare?

Saamaynta etherka cellulose?

marka hore

Daawaynta dusha sare waa hab si macmal ah loogu samaynayo lakabka dusha sare ee shay salka leh sifooyin farsamo, jireed iyo kiimiko oo ka duwan kan saldhigga.

Ujeedada daawaynta dusha sare ee ether cellulose waa in dib loo dhigo wakhtiga isku darka ether cellulose biyo si ay u buuxiyaan shuruudaha dhumucdiisuna gaabis ah qaar ka mid ah hoobiye rinji, iyo sidoo kale in la kordhiyo iska caabbinta daxalka ether cellulose iyo hagaajinta xasiloonida kaydinta.

Farqiga marka biyaha qabow lagu habeeyo 2% xal aqueous:

Eter-ka cellulose-ka ee dusha lagu daweeyay wuxuu si dhakhso ah ugu firdhi karaa biyo qabow oo ma fududa in la kordhiyo sababtoo ah viscosities gaabiska ah;

Cellulose ether oo aan lahayn daaweyn dusha sare ah, sababtoo ah viscosities-ka degdega ah, waxay noqon doontaa viscos ka hor inta aan si buuxda loogu kala firdhin biyo qabow, oo waxay u nugul tahay qallafsanaan.

Sidee loo habeeyaa ether-ka cellulose-ka aan dusha laga daaweynin?

1. Marka hore ku rid xaddi cayiman oo ah eter cellulose-ka aan dusha laga daawaynin;

2. Ka dibna ku dar biyo kulul oo ku saabsan 80 darajo Celsius, miisaanku waa saddex-meelood meel mugga biyaha loo baahan yahay, si ay si buuxda u bararto oo u kala firdhiso;

3. Marka xigta, si tartiib ah ugu shub biyo qabow, miisaanku waa saddex-meelood laba meel oo ka mid ah biyaha haray ee loo baahan yahay, sii walaaq si aad si tartiib ah ugu dhejiso, mana jiri doonto wax dhib ah;

4. Ugu dambeyntii, hoos xaalad miisaan siman, ku rid qubeyska heerkulka joogtada ah ee biyaha ilaa heerkulku hoos u dhaco 20 darajo Celsius, ka dibna tijaabada viscosity waa la samayn karaa!