Njira yopanga hydroxypypyl methylcelulose

Nthawi zambiri, kuphatikiza kaphatikizidwe wa hydroxypropyl methylcellulose, celloto yoyenerera imagwiritsidwa ntchito ndi theka la ola, kotero kuti ma cell alkali center ali mkati mwa mitundu yofunikira. Ikani fiberi ya alkali mu ketulo yoyeserera, onjezani Propeyne oxide ndi methyl chloride nthawi ya 50-80 ℃ kwa maola 5 kuti akhalepo pafupifupi 1.8 MPA. Kenako onjezani kuchuluka kwa hydrochloric acid ndi oxalic acid ndi madzi otentha pa 90 ° C kuti atsuke nkhaniyo kuti achuluke voliyumu. Madzi opanda madzi. Sambani mpaka kusalowerera, pomwe madzi ali ndi 60%, amawuma ndi mpweya wotentha pa 130 ° C mpaka 5%.
Alkirization: Wokongoletsedwa wokongoletsedwa utatsegulidwa amawonjezeredwa amawonjezeredwa, ndipo adayamba ndi madzi a alkali ndi madzi ofewa kuti aletse ma molekyulu owoneka bwino. Alkali omwe amagwiritsidwa ntchito mu alkirization ndi wachitsulo wa photoxide kapena organic. Kuchuluka kwa alkali kuwonjezeredwa (mwa misa, komwe komwe komwe komwe komwe komwe komweko) ndi ma 0.1-0.6 nthawi yomwe yatsekera, ndi kuchuluka kwa thonje lofewa; Zosungunulira ndikusungunulira ndi chisakanizo cha mowa ndi hydrocarborbor, ndi kuchuluka kwa chosakhazikika kuwunika thonje. Nthawi 7: Zosungunulira zimathanso kumwa ma atomu a kamota 3-5 (monga mowa, prosenol), acetone. Ikhozanso kukhala ma hydrocarbons ndi ma hydrocarbons onunkhira; Kutentha kuyenera kulamulidwa mkati mwa 0-5 ° C nthawi yokwanira; Nthawi ya ma alkishilization ndi pafupifupi 1hr. Kusintha kwa kutentha ndi nthawi zitha kutsimikiza malinga ndi zofunikira za zinthuzo ndi chinthu.
Kuyesa: Pambuyo pa mankhwala othandizira, pansi pa vacuum mikhalidwe, yodziwikiratu imachitika powonjezera othandizira, ndipo wothandizila ndi Propylene oxide. Pofuna kuchepetsa kumwa wothandizirana, wothandizika adawonjezeredwa kawiri panthawi yowunikira.