Ethylene oxide (ETO)

Zosintha zaukadaulo

Ethylene oxide ndi imodzi mwama ethers osavuta a cyclic. Ndi gulu la heterocyclic. Njira yake yamakina ndi C2H4O. Ndi poizoni wa carcinogen komanso chinthu chofunikira kwambiri cha petrochemical. The mankhwala katundu wa ethylene okusayidi ndi yogwira. Imatha kukumana ndi mayamwidwe owonjezera owonjezera ndi mankhwala ambiri ndipo imatha kuchepetsa silver nitrate. N'zosavuta polymerize pambuyo pa kutentha ndipo akhoza kuwola pamaso pa zitsulo mchere kapena mpweya. Ethylene oxide ndi madzi opanda mtundu komanso owonekera potentha pang'ono, ndi mpweya wopanda mtundu wokhala ndi fungo loyipa la ether pakutentha koyenera. Kuthamanga kwa mpweya wa gasi ndi wokwera, kufika 141kPa pa 30 ° C. Kuthamanga kwa nthunzi kumeneku kumatsimikizira mphamvu ya epoxy Yamphamvu yolowera mkati mwa fumigation ya ethane ndi kupha tizilombo toyambitsa matenda. Ethylene oxide imakhala ndi bactericidal effect, siiwononga zitsulo, ilibe fungo lotsalira, ndipo imatha kupha mabakiteriya (ndi ma endospores ake), nkhungu ndi bowa, kotero ingagwiritsidwe ntchito kupha tizilombo ndi zinthu zina zomwe sizingathe kupirira kutentha kwa kutentha. . . Ethylene oxide ndi mankhwala ophera tizilombo m'badwo wachiwiri pambuyo pa formaldehyde. Akadali amodzi mwa mankhwala ozizira kwambiri opha tizilombo toyambitsa matenda. Ndiwonso matekinoloje anayi akuluakulu ochepetsa kutentha (kutsika kwa plasma, kutentha kwa formaldehyde nthunzi, ethylene oxide). , Glutaraldehyde) membala wofunikira kwambiri. Ethylene oxide imagwiritsidwanso ntchito kwambiri popanga zosungunulira zosiyanasiyana (monga cellosolve, etc.), diluents, non-ionic surfactants, synthetic detergents, antifreeze, disinfectants, tougheners ndi plasticizers, etc. Chifukwa ethylene oxide imatha kuyaka ndipo imakhala ndi zophulika zambiri mumlengalenga, nthawi zina imagwiritsidwa ntchito ngati gawo lamafuta amafuta ophulika bomba. Zinthu zoyaka zowopsa ndi carbon monoxide ndi carbon dioxide. Ambiri a ethylene oxide amagwiritsidwa ntchito popanga mankhwala ena, makamaka ethylene glycol. Ethylene oxide ndi yoyaka komanso kuphulika, ndipo sikophweka kunyamula mtunda wautali, kotero ili ndi makhalidwe amphamvu a m'madera.

Ntchito:

①Kutsekera:

Ethylene oxide imakhala ndi bactericidal effect, siiwononga zitsulo, ilibe fungo lotsalira, ndipo imatha kupha mabakiteriya (ndi ma endospores ake), nkhungu ndi bowa, kotero ingagwiritsidwe ntchito kupha tizilombo ndi zinthu zina zomwe sizingathe kupirira kutentha kwa kutentha. .

② zofunika mankhwala zopangira:

Ethylene oxide imagwiritsidwa ntchito makamaka popanga ethylene glycol (zopangira pulasitiki za polyester), zotsukira zopangira, zopanda ma ionic surfactants, antifreeze, emulsifiers, ndi ethylene glycol mankhwala. Amagwiritsidwanso ntchito kupanga plasticizers, Lubricant, mphira ndi mapulasitiki, etc.

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