Yaya ake gano sinadarin toka a cikin hydroxypropyl methylcellulose?

Yawan toka muhimmin alama ne nahydroxypropyl methylcelluloseMutane da yawa abokan ciniki kan yi tambaya idan sun fahimci hydroxypropyl methylcellulose: menene darajar tokar? Hydroxypropyl methylcellulose tare da ƙaramin abun ciki na tokar yana nufin tsarki mai yawa; cellulose tare da babban abun ciki na tokar yana nufin akwai ƙazanta da yawa a ciki, wanda zai shafi tasirin amfani ko ƙara yawan ƙari. Lokacin da abokan ciniki suka zaɓi hydroxypropyl methylcellulose, sau da yawa suna kunna wasu cellulose kai tsaye da wuta kuma suna ƙona shi don gwada abun ciki na tokar na cellulose. Amma wannan hanyar ganowa ba ta da kimiyya sosai, saboda masana'antun da yawa suna ƙara abubuwan haɓaka konewa zuwa cellulose. A saman, cellulose ba shi da toka sosai bayan ƙonewa, amma a aikace, riƙe ruwa na hydroxypropyl methylcellulose ba shi da kyau sosai.

To ta yaya ya kamata mu gano daidai adadin tokar da ke cikin hydroxypropyl methylcellulose? Hanyar ganowa da ta dace ita ce amfani da murhun murfi don ganowa.

Kayan aiki Daidaiton nazari, tanderun murfi mai zafi, tanderun lantarki.

Tsarin gwaji:

1) Da farko, a saka tukunyar porcelain mai nauyin 30ml a cikin tanda mai zafi sosai sannan a ƙone ta a (500-600) °C na tsawon mintuna 30, a rufe ƙofar tanda don rage zafin da ke cikin tanda zuwa ƙasa da 200°C, sannan a cire tukunyar a mayar da ita zuwa wurin da za a hura ta (minti 20-30), a auna.

2) Nauyin gram 1.0 nahydroxypropyl methylcelluloseA kan ma'aunin nazari, a saka samfurin da aka auna a cikin tukunyar, sannan a sanya tukunyar da ke ɗauke da samfurin a kan tanda mai amfani da wutar lantarki don yin carbonization, a sanyaya zuwa zafin ɗaki, a ƙara sinadarin sulfuric acid (0.5-1.0) ml, sannan a sanya shi a kan tanda mai amfani da wutar lantarki don cikakken carbonization. Sannan a matsa zuwa tanda mai amfani da wutar lantarki, a ƙone a (500~600) ℃ na tsawon awa 1, a kashe wutar tanderun wutar lantarki mai amfani da wutar lantarki, idan zafin wutar ya faɗi ƙasa da 200 ℃, a cire shi a saka shi a cikin na'urar bushewa don ya huce (minti 20~30), sannan a auna a kan ma'aunin nazari.

Lissafi An ƙididdige ragowar ƙonewa bisa ga dabarar (3):

m2-m1

Ragowar wuta (%) = ×100………………………(3)

m

A cikin dabarar: m1 - nauyin bututun da babu komai a ciki, a cikin g;

m2 - nauyin ragowar da aka yi da kuma abin da aka yi da ƙwaya, a cikin g;

m - nauyin samfurin, a cikin g.