A na-eji ọgwụ mgbochi eme ihe iji belata esemokwu elu nke mmiri, ngwọta na nkwusioru, gbochie ọkpụkpụ ụfụfụ, ma ọ bụ belata ụfụfụ nke a na-emepụta n'oge mmepụta mmepụta ihe. Ndị na-eme ihe mgbochi ndị a na-ahụkarị bụ ndị a:
I. Mmanụ eke (ya bụ mmanụ soybean, mmanụ ọka, wdg)
Uru: dị, ọnụ-irè na mfe ojiji.
Ihe ọghọm: ọ dị mfe ịka njọ na ịbawanye uru acid ma ọ bụrụ na echekwaghị ya nke ọma.
II. Mmanya Carbon dị elu
Ihe ọṅụṅụ na-aba n'anya nke carbon bụ mkpụrụ ndụ linear nke nwere hydrophobicity siri ike na hydrophilicity na-adịghị ike, nke bụ ihe mgbochi dị irè na usoro mmiri. Mmetụta antifoaming nke mmanya na-ejikọta ya na solubility na mgbasa ya na ngwọta ụfụfụ. Mmanya nke C7 ~ C9 bụ Antifoamers kachasị dị irè. Akwa carbon Alcohol nke C12 ~ C22 na-akwado ya na emulsifiers kwesịrị ekwesị na nha nha nke 4 ~ 9μm, na 20 ~ 50% emulsion mmiri, ya bụ, defoamer na usoro mmiri. Ụfọdụ esters nwekwara mmetụta antifoaming na penicillin gbaa ụka, dị ka phenylethanol oleate na lauryl phenylacetate.
III. Polyether Antifoamers
1. GP Antifoamers
Emere site na mgbakwunye polymerization nke propylene oxide, ma ọ bụ ngwakọta nke ethylene oxide na propylene oxide, yana glycerol dị ka onye na-amalite. Ọ nwere hydrophilicity na-adịghị mma na obere solubility na ọkara ụfụfụ, n'ihi ya, ọ dị mma iji mee ihe na mmiri mmiri ịgba ụka. Ebe ọ bụ na ikike mgbochi ya dị elu karịa nke nkwụsịtụ, ọ dị mma ka agbakwunye ya na basal media iji gbochie usoro ụfụfụ nke usoro ịgba ụka dum.
2. GPE Antifoamers
A na-agbakwunye ethylene oxide na njedebe nke njikọ njikọ polypropylene glycol nke GP Antifoamers iji mepụta polyoxyethylene oxypropylene glycerol na njedebe hydrophilic. GPE Antifoamer nwere ezigbo hydrophilicity, ike antifoaming ike, ma nwekwara nnukwu solubility nke na-eme ka obere oge na-arụ ọrụ antifoaming. Ya mere, ọ nwere mmetụta dị mma na viscous gbaa ụka efere.
3. GPEs Antifoamers
A na-emepụta ihe mgbochi copolymer nwere ụdọ hydrophobic na nsọtụ abụọ yana agbụ hydrophilic site na iji hydrophobic stearate mechie agbụ njedebe nke GPE Antifoamers. Ụmụ irighiri ihe ndị nwere ihe owuwu a na-agbakọta na oghere mmiri mmiri gas, yabụ na ha nwere ọrụ elu siri ike yana oke arụrụ arụ ọrụ.
IV. Polyether Modified Silicone
Polyether Modified Silicone Antifoamers bụ ụdị ọhụrụ nke defoamers na-arụ ọrụ nke ọma. Ọ na-efu ọnụ na uru nke mgbasa ozi ọma, ike mgbochi ụfụfụ siri ike, nkwụsi ike, adịghị egbu egbu na nke na-adịghị njọ, obere volatility na ike Antifoamers ike. Dabere na ụdị njikọ dị n'ime dị iche iche, enwere ike kewaa ya n'ụdị abụọ a:
1. Copolymer na -Si-OC- bond kwadebere na acid dị ka ihe mkpali. Nke a defoamer dị mfe hydrolysis ma nwee nkwụsi ike na-adịghị mma. Ọ bụrụ na ihe nchekwa amine dị, enwere ike idowe ya ogologo oge. Mana n'ihi ọnụ ala ya dị ala, ikike mmepe pụtara nke ọma.
2. Copolymer bonded by - si-c-bond nwere usoro kwụsiri ike ma nwee ike ịchekwa ya ihe karịrị afọ abụọ n'okpuru ọnọdụ mechiri emechi. Otú ọ dị, n'ihi iji platinum dị oké ọnụ ahịa dị ka ihe na-eme ka a na-emepụta ihe na-emepụta ihe, ọnụ ahịa mmepụta nke ụdị antifoamers dị elu, n'ihi ya, a naghị eji ya eme ihe.
V. Organic Silicon Antifoamer
... isi nke na-esote.
Oge nzipu: Nov-19-2021