Ether Yosungunuka Pang'onopang'ono/Yosungunuka Pang'onopang'ono (Chithandizo Cha Pamwamba)

Kugawa kwa Cellulose Ether

Cellulose ether ndi mawu ofala a zinthu zingapo zopangidwa ndi alkali cellulose ndi etherifying agent pazifukwa zina. Pamene alkali cellulose yalowedwa m'malo ndi etherifying agents zosiyanasiyana, ma cellulose ethers osiyanasiyana adzapezeka.

Malinga ndi momwe zinthu zosinthira zimakhalira ndi ionization, ma cellulose ether amatha kugawidwa m'magulu awiri: ionic (monga carboxymethyl cellulose) ndi nonionic (monga methyl cellulose).

Malinga ndi mtundu wa cholowa m'malo, etha ya cellulose ikhoza kugawidwa m'magulu awiri: monoether (monga methyl cellulose) ndi mixed ether (monga hydroxypropyl methyl cellulose).

Malinga ndi kusungunuka kosiyanasiyana, kumatha kugawidwa m'magulu awiri: kusungunuka kwa madzi (monga hydroxyethyl cellulose) ndi kusungunuka kwa organic solvent (monga ethyl cellulose).

Ma ether a cellulose osungunuka m'madzi omwe amagwiritsidwa ntchito mu mortars osakanikirana ndi owuma amagawidwa m'magulu awiri: ma ether a cellulose osungunuka nthawi yomweyo ndi ma ether a cellulose osungunuka mochedwa omwe amakonzedwa pamwamba.

Kodi kusiyana kwawo kuli kuti? Ndipo mungakonze bwanji bwino kuti ikhale yankho lamadzi la 2% poyesa kukhuthala?

Kodi chithandizo cha pamwamba n'chiyani?

Zotsatira pa ether ya cellulose?

choyamba

Kukonza pamwamba ndi njira yopangira mwaluso gawo la pamwamba pa chinthu choyambira chokhala ndi mawonekedwe a makina, thupi ndi mankhwala osiyana ndi a maziko.

Cholinga cha kuchiza pamwamba pa cellulose ether ndikuchedwetsa nthawi yophatikiza cellulose ether ndi madzi kuti akwaniritse zofunikira za utoto wina, komanso kuwonjezera kukana dzimbiri kwa cellulose ether ndikuwonjezera kukhazikika kwa malo osungira.

Kusiyana kwa madzi ozizira pamene akonzedwa ndi yankho la madzi la 2%:

Cellulose ether yokonzedwa pamwamba imatha kufalikira mwachangu m'madzi ozizira ndipo sikophweka kusonkhana chifukwa cha kukhuthala kwake pang'onopang'ono;

Cellulose ether yopanda mankhwala pamwamba pake, chifukwa cha kukhuthala kwake mwachangu, imakhala yokhuthala isanamwazike kwathunthu m'madzi ozizira, ndipo imatha kusonkhana mosavuta.

Kodi mungakonze bwanji efa ya cellulose yomwe siili pamwamba?

1. Choyamba ikani kuchuluka kwa etha ya cellulose yosamalidwa pamwamba;

2. Kenako onjezerani madzi otentha pa madigiri pafupifupi 80 Celsius, kulemera kwake ndi gawo limodzi mwa magawo atatu a kuchuluka kwa madzi komwe kumafunika, kuti azitha kutupa ndi kufalikira mokwanira;

3. Kenako, pang'onopang'ono tsanulirani madzi ozizira, kulemera kwake ndi magawo awiri mwa atatu a madzi otsala omwe akufunika, pitirizani kusakaniza kuti zikhale zomatira pang'onopang'ono, ndipo sipadzakhala kusonkhana;

4. Pomaliza, ngati muli ndi kulemera kofanana, ikani mu bafa la madzi lotentha nthawi zonse mpaka kutentha kutsika kufika madigiri Celsius 20, kenako kuyesa kwa kukhuthala kumatha kuchitika!