Kukula kwa Rheological Thickener

Kukula kwa ma rheological thickeners kwakhala gawo lofunikira kwambiri m'mbiri ya sayansi ndi uinjiniya. Ma Rheological thickeners ndi zida zomwe zimatha kukulitsa kukhuthala komanso / kapena kuwongolera kutuluka kwa zakumwa, kuyimitsidwa, ndi ma emulsions.

Mphukira yoyamba ya rheological thickener inapezedwa mwangozi m'zaka za zana la 19, pamene chisakanizo cha madzi ndi ufa chinasiyidwa kuti chiyime kwa kanthawi, zomwe zinapangitsa kuti pakhale chinthu chakuda, chofanana ndi gel. Kusakaniza kumeneku kunapezeka kuti kunali kuyimitsidwa kosavuta kwa tinthu tating'ono ta ufa m'madzi, chomwe chingagwiritsidwe ntchito ngati chowonjezera pazinthu zosiyanasiyana.

Kumayambiriro kwa zaka za m’ma 1900, anapeza kuti zinthu zina zinali ndi mphamvu zokhuthala, monga zokhuthala, nkhama, ndi dongo. Zidazi zidagwiritsidwa ntchito ngati zokometsera zama rheological m'njira zosiyanasiyana, kuyambira pazakudya ndi zodzoladzola kupita ku utoto ndi madzi akubowola.

Komabe, zokhuthala zachilengedwezi zinali ndi malire, monga magwiridwe antchito, kukhudzika ndi momwe zinthu zimagwirira ntchito, komanso kuipitsidwa ndi tizilombo tating'onoting'ono. Izi zinapangitsa kuti pakhale zida zopangira ma rheological thickeners, monga ma cellulose ethers, acrylic polima, ndi polyurethanes.

Ma cellulose ethers, monga sodium carboxymethyl cellulose (CMC), methyl cellulose (MC), ndi hydroxypropyl cellulose (HPC), akhala amodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri popanga ma rheological mu ntchito zosiyanasiyana, chifukwa cha mawonekedwe awo apadera, monga kusungunuka kwamadzi, pH kukhazikika, mphamvu ya ionic mphamvu, komanso luso lopanga mafilimu.

Kupanga zopangira ma rheological thickeners kwapangitsa kuti zinthu zizipangidwa mosasinthasintha, kukhazikika bwino, komanso kugwira ntchito bwino. Pakuchulukirachulukira kwa zida zogwira ntchito kwambiri, kutukuka kwa zida zatsopano za rheological zikuyembekezeka kupitilira, motsogozedwa ndi kupita patsogolo kwa sayansi, chemistry, ndi uinjiniya.