Foam Stabilizers

foam stabilizers ndi mankhwala omwe amalepheretsa kuyanjana kwa thovu la gasi mu thovu kupangitsa kuti ikhale yokhazikika komanso yofanana.. Ma stabilizers amagwiritsidwa ntchito muzakudya ndi zakumwa.

Kutulutsa thovu kumachitika pamene mpweya wasakanikirana ndi madzi ndipo mpweya umagwidwa ndi mamolekyu a mapuloteni omwe ali pakati pa madzi ndi mpweya.. Mapeto a hydrophobic a mapuloteni amalendewera m'madzi pomwe malekezero a hydrophilic amaloza mumlengalenga kupanga kuwira komwe kumawoneka ngati thovu..

Nanoparticles ngati Foam Stabilizer

Nanoparticles amadziwika kwambiri chifukwa cha kuthekera kwawo kugwiritsidwa ntchito pakukhazikika kwa thovu. Komabe, pali zovuta zingapo pakugwiritsa ntchito nanoparticles pachifukwa ichi. Mavutowa akuphatikizapo njira zopangira, katundu wa nanoparticles ndi nkhawa zachilengedwe (Rafati et al., 2016).

Kuwongolera magawo a Foam Kukhazikika

Waukulu ulamuliro magawo mu thovu bata monga kukula kwa nanoparticles, mtundu wa nanoparticles, nkhokwe kutentha, mchere ndende ndi modifiers. Kukula kochepa kwa nanoparticles kumatha kukhala pa lamellae mokhazikika ndikuletsa ngalande, pamene kukula kwakukulu kungakhale kovuta kusunga ndi kuonjezera m'mimba mwake wa nanoparticles (Pugh, 1996; Singh ndi Mohanty, 2015).

Pakati pa mitundu yosiyanasiyana ya nanoparticles, wapakati hydrophobic (kukhudzana angle 90 deg) ma nanoparticles anali abwino kwambiri foam stabilizers. Iwo umatheka pazipita capillary kuthamanga, adawonjezera mphamvu yamakina a lamellae ndikupanga maukonde kuti achepetse ngalande zamafilimu, kuchepetsa coalescence wa thovu ndi kuwonjezera nthawi kukhalapo kwa dongosolo thovu.