Hnub Tim:17,Jan,2022

Siliconedefoobyog cov vosous pepestion. Nws tau siv nyob rau hauv ntau thaj chaw muaj tsheb txiag txij thaum xyoo 1960, tab sis loj-teev thiab muaj kev loj hlob sai tau pib thaum xyoo 1980s. Raws li ib tus organosilicondefoob, nws daim ntawv thov tau tseem dav heev, nyiam ntau dua thiab ntau xim los ntawm txhua qhov chaw ntawm lub neej. Hauv cov tshuaj, ntawv, txheej, khoom noj, textile, kws tshuaj thiab lwm yam muaj cov sectors, siliconedefoobyog ib qho kev tsis tseem ceeb ntxiv hauv cov txheej txheem ntau lawm. Nws tsis tuaj yeem tsuas yog tshem tawm ua npuas dej ntawm cov txheej txheem ua kua hauv cov txheej txheem nruab nrab hauv cov txheej txheem ntau lawm, thiab ua kom cov txheej txheem ua kom huv si, kom qhuav thiab lwm cov txheej txheem technological kom paub muaj peev xwm ntawm ntau yam khoom cia thiab ua Ntim Ntim.

Qhov zoo ntawmSilicone defoamers:
1. Kev siv ntau yam: Vim yog cov qauv tshuaj tshwj xeeb ntawm cov roj silicone, nws yog tsis sib xws nrog cov pab pawg polar, tsis muaj cov tshuaj orgrocarbons lossis cov organic. Vim yog insolubility ntawm Silicone Roj rau ntau cov tshuaj, nws muaj ntau cov kev siv. Nws tuaj yeem siv rau defoaming hauv cov dej hauv dej nrog rau hauv cov roj tshuab.
2. Tsawg Sab nro: Lub peev xwm saum npoo ntawm cov roj silicone feem ntau yog 20-21 Dyne / cm, uas yog me dua li ntawd ntawm cov dej (72 dyaming kua, thiab muaj qhov kev ua tau zoo defoaming.
3. Zoo thermal stability: noj ntau zaus siv simethicone: nws tuaj yeem tiv taus 150 ° C rau lub sijhawm ntev thiab 300 ° C rau lub sijhawm luv luv, thiab nws cov kev sib khi ntawm SI-O yuav tsis decompose. Qhov no kom ntseeg tau tias tusSilicone defoamertuaj yeem siv rau hauv qhov ntsuas kub ntau.
4. Cov tshuaj zoo ruaj khov: txij li kev sib khi ntawm SI-O yog qhov ruaj khov ntawm cov roj silicone muaj kev kub ntxhov heev, thiab nws yog qhov nyuaj rau lwm yam. Yog li ntawd, tsuav yog cov qauv tsim nyog,Silicone defoamersraug tso cai siv tshuab hauv cov kua qaub, alkalis, thiab ntsev.
5. Physiologically inert: Silicone roj tau ua pov thawj yuav tsis muaj tshuaj lom rau tib neeg thiab tsiaj, thiab nws ib nrab-licom ntau dua 34 g / kg. Yog li ntawd,Silicone defoamers(Nrog cov tsis muaj kuab lom, thiab lwm yam) tuaj yeem siv rau cov khoom noj, kev kho mob, kev lag luam thiab kev mob hlwb.
6. Lub zog defoaming muaj zog:Silicone defoamerTsis tuaj yeem ua kom zoo ua npuas ncauj uas tau tsim tawm, tab sis kuj tseem tuaj yeem tsim ua npuas dej caw thiab tiv thaiv kom muaj kev ua npuas ncauj. Nws cov kev siv yog qhov tsawg heev, ntev npaum li ntev ntxiv ib ntu ib lab (1ppm) ntawm qhov hnyav ntawm lub foaming nruab nrab, nws tuaj yeem tsim defoaming nyhuv. Nws feem ntau siv ntau yog 1 txog 100 ppm. Tsis yog tsuas yog tus nqi qis, tab sis kuj tsis yog qias neeg ntawm cov khoom lag luam defoamed.

Qhov tsis zoo ntawmSilicone defoamers:
a. Polysiloxane yog qhov nyuaj rau disperse: polysiloxane yog qhov nyuaj kom yaj hauv dej, uas cuam tshuam nws cov kev sib cais hauv dej system. Tus neeg sawv cev dispersing yuav tsum tau ntxiv. Yog tias tus neeg sawv cev dispersing ntxiv, cov emulsion yuav ruaj khov thiab cov nyhuv defoaming yuav hloov. Tsis zoo, nws yog ib qho tsim nyog los siv tsawg emulsifier ua kom cov defoaming nyhuv zoo thiab emulsion ruaj khov.
b. Silicone yog cov roj-soluble, uas txo nws cov nyhuv defoaming hauv cov roj system.
c. Lub sijhawm ntev kub ua hauj thiab tsis zoo alkali tsis kam.