Sidee loo ogaadaa dambaska ku jira hydroxypropyl methylcellulose?

Waxyaabaha dambasku ku jiro waa tilmaame muhiim ah oohydroxypropyl methylcelluloseMacaamiil badan ayaa badanaa isweydiiya marka ay fahmaan hydroxypropyl methylcellulose: waa maxay qiimaha dambaska? Hydroxypropyl methylcellulose oo leh dambas yar macnaheedu waa daahirnimo sare; cellulose oo leh dambas weyn macnaheedu waa in ay jiraan wasakh badan oo ku jira, taas oo saameyn doonta saameynta isticmaalka ama kordhin doonta xaddiga lagu daray. Marka macaamiishu doortaan hydroxypropyl methylcellulose, badanaa waxay si toos ah u shidaan cellulose qaar dab oo ay gubaan si ay u tijaabiyaan dambaska ku jira cellulose. Laakiin habkan ogaanshaha waa mid aad u aan cilmiyeysanayn, sababtoo ah soo-saareyaal badan ayaa ku daraya dardar-gelinta gubashada cellulose. Dusha sare, cellulose waxay leedahay dambas aad u yar ka dib gubashada, laakiin ficil ahaan, haynta biyaha ee hydroxypropyl methylcellulose ma aha mid aad u wanaagsan.

Haddaba sidee ayaan si sax ah u ogaan karnaa dambaska ku jira hydroxypropyl methylcellulose? Habka saxda ah ee lagu ogaan karo waa in la isticmaalo foorno lagu shido si loo ogaado.

Qalabka dheelitirka falanqaynta, foornada heerkulka sare leh ee lagu shido, foornada korontada.

Habka tijaabada:

1) Marka hore, ku rid 30ml oo ah foorno balaastiig ah foorno heerkul sare leh oo ku gub (500 ~ 600) °C muddo 30 daqiiqo ah, xidh albaabka foornada si aad heerkulka foornada uga dhigto mid ka hooseeya 200°C, ka dibna ka saar foornada oo u wareeji qalab qalajiye si uu u qaboojiyo (20 ~ 30) daqiiqo, isagoo miisaankiisu yahay.

2) Miisaankiisu waa 1.0 g oo ka mid ahhydroxypropyl methylcelluloseIsku dheelitir falanqayn ah, muunadda miisaanka ku rid weel, ka dibna weelka ay ku jirto muunadda saar foorno koronto si loogu kaarbooneeyo, ku qabooji heerkulka qolka, ku dar aashitada sulfuric (0.5-1.0) ml, oo ku rid foornada korontada si aad u hesho kaarboon dhammaystiran. Ka dib u gudub foornada heerkulka sare leh, ku gub (500~600) ℃ muddo 1 saac ah, dami awoodda foornada heerkulka sare leh, marka heerkulka foornadu hoos uga dhaco 200 ℃, ka saar oo geli weelka qalajiyaha si uu u qaboojiyo (20~30) daqiiqo, ka dibna ku miisaamo dheelitir falanqayn ah.

Xisaabinta Hadhaaga dabka waxaa lagu xisaabiyaa iyadoo loo eegayo qaacidada (3):

m2-m1

Hadhaaga dabka (%) = ×100………………………(3)

m

Qaaciddada: m1 - cufka godka madhan, ee g;

m2 - cufka haraaga iyo jajabka, ee g;

m - cufka muunadda, ee g.