Antifreeze kev taw qhia
Antifreeze yog ib hom coolant muaj tshwj xeeb additives. Nws yog tsuas yog siv nyob rau hauv kua-txias engine txias system. Antifreeze muaj kev tiv thaiv thaum lub caij ntuj no, npau npau rau hauv lub caij ntuj sov, los tiv thaiv scaling thoob plaws hauv lub xyoo, tiv thaiv corrosion thiab lwm yam khoom zoo heev.
1.chemical composition
Ntau tshaj 95% ntawm cov dej-raws li tshuaj antifreeze siv cov ethylene glycol nyob hauv tsev thiab txawv teb chaws, piv nrog cov dej hauv qhov dej, qhov tseem ceeb tshaj plaws ntawm ethylene glycol yog antifreeze, thiab dej tsis tuaj yeem khov. Qhov thib ob, ethylene glycol muaj taw tes siab kub, tsis muaj volatility, ntsis viscosity thiab me me hloov nrog kub, thiab thermal stability zoo. Yog li, glycol hom antifreeze yog ib qho chaw txias.
2. Hom tshuaj antifreeze
Muaj ntau hom tshuaj antifreeze rau lub tsheb, xws li cov tshuaj calcium chloride (CaCl2) hauv cov khoom tsis haum, methanol (CH3OH) hauv organic teeb meem, ethanol (C2H5OH, hom npe cawv), ethylene glycol (C2H4 (OH) 2, ), Glycerol (C3H5 (OH) 3, feem ntau hu ua glycerin), lubricating roj, thiab qab zib, zib ntab, thiab lwm yam, uas yog ib qho hauv peb lub neej txhua hnub, tuaj yeem siv los ua leej niam kua tshuaj antifreeze. Muab cov dej ntshiab ntxiv kom haum (nrog los sis tsis muaj me ntsis calcium thiab magnesium). Ionic dej, xws li dej ntws, dej ntws tsis daig, dej daus, thiab lwm yam, nrog kev sib zog ntawm 0-30 ppm hauv dej, tuaj yeem ua ib qho antifreeze.