Ụbọchị nbipute:17,JAN,2022

Silikonidefoamerbụ ọcha viscous emulsion. A na-eji ya na mpaghara mmepụta ihe dị iche iche kemgbe 1960s, mana nnukwu mmepe ngwa ngwa na nke zuru oke malitere na 1980s. Dị ka organosilicondefoamer, mpaghara ngwa ya dịkwa obosara nke ukwuu, na-adọtakwu anya site na ụdị ndụ niile. Na kemịkalụ, akwụkwọ, mkpuchi, nri, textiles, ọgwụ na ụlọ ọrụ mmepụta ihe ndị ọzọ, siliconedefoamerbụ ihe mgbakwunye dị mkpa na usoro mmepụta. Ọ nwere ike ọ bụghị nanị na-ewepụ ụfụfụ na mmiri mmiri n'elu nke usoro usoro na mmepụta usoro, si otú mma filtration, The nkewa, gasification, na mmiri mmiri drainage mmetụta nke ịsacha, mmịpụta, distillation, evaporation, akpịrị ịkpọ nkụ, ihicha na ndị ọzọ na nkà na ụzụ Filiks hụ na ikike nke nchekwa ihe dị iche iche na nhazi nhazi.

Uru nkesilicone defoamers:
1. Ngwa dịgasị iche iche: n'ihi nhazi kemịkalụ pụrụ iche nke mmanụ silicone, ọ naghị adaba na mmiri ma ọ bụ ihe ndị nwere polar dị iche iche, ma ọ bụ na hydrocarbons ma ọ bụ ihe ndị na-emepụta ihe nwere hydrocarbon. N'ihi enweghị ike nke mmanụ silicone na ihe dị iche iche, ọ nwere ọtụtụ ngwa ngwa. Enwere ike iji ya mee ihe maka imebi ụfụfụ na usoro mmiri yana na usoro mmanụ.
2. ala ala esemokwu: The elu ikike nke silicone mmanụ bụ n'ozuzu 20-21 dyne / cm, nke dị ntakịrị karịa nke mmiri (72 dyne / cm) na n'ozuzu ụfụfụ mmiri mmiri, na nwere ezi defoaming arụmọrụ.
3. Ezi nkwụsi ike nke okpomọkụ: Were simethicone a na-ejikarị eme ihe dị ka ihe atụ, ọ nwere ike idi 150 ° C ogologo oge na 300 Celsius maka obere oge, na njikọ Si-O agaghị emebi. Nke a na-eme ka o doo anya nasilicone defoamerenwere ike iji ya na oke okpomọkụ.
4. Ezi nkwụsi ike nke kemịkal: Ebe ọ bụ na njikọ Si-O dị ntakịrị, nkwụsi ike kemịkalụ nke mmanụ silicone dị oke elu, ọ na-esikwa ike ịmeghachi ihe ndị ọzọ na-eme ihe. Ya mere, ọ bụrụhaala na nhazi ahụ nwere ezi uche.silicone defoamersA na-ahapụ ka eji ya na sistemu nwere acid, alkalis, na salts.
5. Inert physiologically: E gosiputara na mmanụ silikone adịghị egbu egbu nye mmadụ na anụmanụ, na ọkara nke na-egbu egbu karịrị 34 g / kg. Ya mere,silicone defoamers(ya na emulsifiers na-adịghị egbu egbu, wdg) nwere ike iji ya mee ihe n'enweghị nsogbu na nri, ọgwụ, ọgwụ na ụlọ ọrụ ịchọ mma.
6. Ike imebi ụfụfụ siri ike:Silicone defoamerọ bụghị naanị na ọ ga-agbaji ụfụfụ ahụ nke ọma, kamakwa ọ nwere ike igbochi ụfụfụ ma gbochie ịmepụta ụfụfụ. Ojiji ya dị ntakịrị, ma ọ bụrụhaala na ịtinye otu akụkụ kwa nde (1ppm) nke ịdị arọ nke ihe na-afụ ụfụfụ, ọ nwere ike ịmepụta mmetụta nbibi. Ogologo ya na-ejikarị bụ 1 ruo 100 ppm. Ọ bụghị naanị na ọnụ ahịa ya dị ala, kamakwa ọ dịghị emetọ ihe ahụ mebiri emebi.

Ọdịmma nkesilicone defoamers:
a. Polysiloxane siri ike ịgbasa: Polysiloxane siri ike igbari na mmiri, nke na-egbochi mgbasa ya na usoro mmiri. A ga-atụkwasịrịrị onye na-achụsa ihe. Ọ bụrụ na agbakwunyere onye na-achụsa ihe, emulsion ahụ ga-adịgide adịgide na mmetụta defoaming ga-agbanwe. Ogbenye, ọ dị mkpa iji obere emulsifier mee ka mmetụta defoaming dị mma na emulsion kwụsiri ike.
b. Silicone bụ mmanụ soluble, nke na-ebelata mmetụta defoaming ya na usoro mmanụ.
c. Ogologo oge dị elu na-eguzogide okpomọkụ na adịghị ike alkali.