Kodi kuchulukitsa mamasukidwe a cellulose ether kudzawonjezera kuthamanga?

Kuchulukitsa kukhuthala kwa ma cellulose ethers nthawi zambiri kumachepetsa kuthamanga kwa yankho. Ma cellulose ethers ndi gulu la ma polima osungunuka m'madzi omwe amachokera ku cellulose omwe amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza mankhwala, chakudya, ndi zomangamanga. Kukhuthala kwa njira yothetsera vutoli ndi muyeso wa kukana kwake kuyenda ndipo kumakhudzidwa ndi zinthu monga ndende, kutentha, ndi kulemera kwa maselo a cellulose ether.

Nayi kufotokozera mwatsatanetsatane momwe kuwonjezeka kwa cellulose ether viscosity kumakhudzira kuthamanga kwakuyenda:

Ubale pakati pa mamasukidwe akayendedwe ndi liwiro loyenda:

Viscosity ndi kukangana kwamkati mkati mwamadzimadzi omwe amatsutsana ndi kutuluka kwake. Amayezedwa m’mayunitsi monga centipoise (cP) kapena pascal seconds (Pa·s).
Kuthamanga kwa njira yothetsera vutoli kumayenderana ndi kukhuthala kwake. Kukhuthala kwapamwamba kumatanthauza kukana kwambiri kuyenda, zomwe zimapangitsa kuti pakhale kutsika kochepa.

Makhalidwe a cellulose ether:

Ma cellulose ethers nthawi zambiri amawonjezeredwa ku yankho kuti asinthe mawonekedwe ake a rheological. Mitundu yodziwika bwino imaphatikizapo methylcellulose (MC), hydroxypropylcellulose (HPC), ndi carboxymethylcellulose (CMC).
The mamasukidwe akayendedwe a mapadi etere njira zimadalira zinthu monga ndende, kutentha ndi kukameta ubweya mlingo.

Zotsatira zokhazikika:

Kuchulukitsa kuchuluka kwa ma cellulose ethers nthawi zambiri kumawonjezera kukhuthala. Izi ndichifukwa choti ndende yayikulu imatanthawuza maunyolo ochulukirapo a polima mu yankho, zomwe zimapangitsa kuti pakhale kukana kwambiri.

Kutentha:

Kutentha kumakhudza kukhuthala kwa cellulose ethers. Nthawi zina, kutentha kumawonjezeka, kukhuthala kumachepa. Komabe, ubalewu ukhoza kusiyana kutengera mtundu wa cellulose ether komanso mawonekedwe ake.

Kudalira kwa shear rate:

Kukhuthala kwa ma cellulose ether solution nthawi zambiri kumadalira kumeta ubweya. Pakumeta ubweya wambiri (mwachitsanzo, pakupopa kapena kusakaniza), kukhuthala kumatha kuchepa chifukwa cha kumeta ubweya wa ubweya.

Zotsatira pamagalimoto:

Kuwonjezeka kwa kukhuthala kwa cellulose ether kungayambitse kuchepa kwa kayendedwe ka kayendedwe kamene kamafuna kunyamula, kupopera, kapena kugawa njira. Izi ndizofunikira pazogwiritsa ntchito monga zokutira, zomatira ndi zopangira mankhwala.

Ndemanga za ntchito:

Ngakhale ma viscosity apamwamba angafunike muzinthu zina kuti apititse patsogolo magwiridwe antchito kapena kukhazikika kwazinthu, izi ziyenera kukhala zogwirizana ndi momwe zimagwirira ntchito ndi kukonza.

Kukhathamiritsa kwa maphikidwe:

Opanga nthawi zambiri kukhathamiritsa mapadi etere ndende ndi zina chiphunzitso magawo kukwaniritsa mamasukidwe akayendedwe chofunika ntchito yeniyeni popanda kukhudza flowability ku digiri yosavomerezeka.

Kuchulukirachulukira kwa cellulose ether viscosity nthawi zambiri kumabweretsa kuchepa kwa kuthamanga kwa magazi chifukwa cha kuchuluka kwa kukana koyenda. Komabe, chiyanjano chenichenicho chimakhudzidwa ndi zinthu monga kukhazikika, kutentha ndi kumeta ubweya, ndipo kusintha kwapangidwe kungapangidwe kuti akwaniritse bwino pakati pa viscosity ndi flowability.