Sida loo ogaado waxa ku jira dambaska hydroxypropyl methylcellulose?

Nuxurka dambaska waa tilmaame muhiim ahhydroxypropyl methylcellulose. Macaamiil badan ayaa badanaa weydiiya marka ay fahmaan hydroxypropyl methylcellulose: waa maxay qiimaha dambaska? Hydroxypropyl methylcellulose oo leh wax yar oo dambas ah ayaa macnaheedu yahay nadiif sare; cellulose oo leh maaddo dambas weyni waxay ka dhigan tahay in ay jiraan wasakh badan oo ku jira, taas oo saameyn doonta saameynta isticmaalka ama kordhin doonta qadarka isku-darka. Marka macaamiishu doortaan hydroxypropyl methylcellulose, waxay inta badan si toos ah u shidaan qaar ka mid ah cellulose dab oo ay gubaan si ay u tijaabiyaan waxa ka kooban dambaska cellulose. Laakiin habkan ogaanshaha waa mid aan cilmi-baaris ahayn, sababtoo ah wax-soo-saarayaal badan ayaa ku daraya dardargelinta gubashada cellulose. Dusha sare, cellulose waxay leedahay dambas aad u yar ka dib gubashada, laakiin ficil ahaan, haynta biyaha ee hydroxypropyl methylcellulose maaha mid aad u fiican.

Haddaba sidee baan si sax ah u ogaan karnaa waxa ku jira dambaska hydroxypropyl methylcellulose? Habka saxda ah ee lagu ogaanayo waa in la isticmaalo foornada maaf si loo ogaado.

Qalabka dheellitirka falanqaynta, foornada xamaasada heerkulka sare, foornada korontada.

Habka tijaabada:

1) Marka hore waxaad gelisaa weel 30ml ah oo foorno ah oo heerkulkiisu sarreeyo oo ku gub (500 ~ 600) ° C ilaa 30 daqiiqo, xir albaabka foornada si aad heerkulka foornada hoos ugu dhigto ilaa 200 ° C, ka dibna ka soo saar kareemka oo u wareeji digsi qaboojiye30 ~ 20 min.

2) Miisaanka 1.0 g oo ahhydroxypropyl methylcellulosedheellitiran falanqeyn, ku rid muunadda la miisaamay ku rid weel, ka dibna ku rid weelka uu ku jiro muunada foornada koronto ee carbonization, qabooji heerkulka qolka, ku dar sulfuric acid (0.5-1.0) ml, oo ku rid foornada korontada si ay u dhammaystirto carbonization. Kadibna u gudub foornada heerkulka sare ee foornada, ku gub (500 ~ 600) ℃ 1 saac, dami awoodda foornada heerkulka sare, marka heerkulka foornada uu hoos u dhaco 200 ℃, soo saar oo ku rid qalajiyaha si aad u qaboojiso (20 ~ 30) min, ka dibna miisaan falanqeyn.

Hadhaaga kicinta xisaabinta waxaa loo xisaabiyaa si waafaqsan qaacidada (3):

m2-m1

Hadhaaga dabka (%) = ×100………………………………(3)

m

Qaaciddada: m1 - cufnaanta cufan ee madhan, g;

m2 - cufnaanta haraaga iyo qashinka, ee g;

m - tirada muunada, g.