Propylene GlycolRaws li cov coolants haum rau ib puag ncig uas lawv cov toxicity tsawg yuav tsis ua mob xws li nyob rau hauv marine thiab sab nraum zoov qhov chaw whereas Monoethylene Glycol yog ntau haum rau niaj hnub kub khiav lub cev muaj zog tsheb uas nws zoo dua tshav kub hloov zog yuav siv tau.
Qhov sib txawv ntawm cov khoom siv tshuaj lom neeg thiab kev ua haujlwm ib puag ncig
- Kev sib piv toxicity:Ethylene glycol(C₂H₆O₂) nthuav tawm cov tshuaj toxicity tseem ceeb, nrog rau kev noj 5mL/kg txaus los ua kom lom rau cov neeg laus (xws li WHO cov ntaub ntawv), yuav tsum muaj kev tiv thaiv nruj. Propylene glycol (C₃H₈O₂) yog ib yam tshuaj lom neeg tsawg - tshuaj lom neeg raug cais los ntawm FDA raws li Kev Pom Zoo Raws Li Kev Nyab Xeeb (GRAS), haum rau siv hauv cov khoom noj thiab tshuaj lag luam.
- Biodegradability: Propylene glycol nthuav tawm ntau dua 80% tus nqi degradation nyob rau hauv ib puag ncig ntuj (EPA kev tshawb fawb), hos ethylene glycol degrades qeeb thiab tej zaum yuav ua rau muaj kuab paug nyob rau hauv dej.
Lub cev muaj zog thiab kev ua tau zoo
- Thermal Conductivity: Ethylene glycol nthuav tawm cov thermal conductivity ntawm 0.25 W / (m·K), outperforming propylene glycol's 0.20 W / (m·K), ua kom nws haum rau siab - lub zog cav txias.
- Freezing Point thiab Boiling Point:
- 50% ethylene glycol aqueous tov: khov point -37 degree, boiling point 107 degree;
- 50% propylene glycol aqueous tov: khov point -34 degree, boiling point 106℃(Source: SAE Standard J814). Propylene glycol nthuav tawm cov viscosity thiab txo cov kua dej hauv qhov chaw txias heev (xws li, qis dua -40℃).
Vim li cas thiaj xaiv Gneebio?
Gneebio, nrog ntau xyoo dhau los ntawm kev tshawb fawb, kev tsim khoom, thiab kev lag luam ntawm cov tshuaj organic, yog ib qho ntawm cov khoom xa tawm ntawm cov khoom siv tshuaj hauv Henan, Suav. Tau ntau xyoo, peb tau cog lus rau kev lag luam tshuaj lom neeg ntawm cov khoom nruab nrab, cov khoom siv yas, cov tshuaj kho dej thiab cov tshuaj fungicides, thiab tshuaj txhua hnub.
Qhov zoo
1) Cov khoom xa tuaj me me thiab sub- ntim khoom muaj.
2). Muab COA, MSDS, Daim Ntawv Pov Thawj Kev Noj Qab Haus Huv, thiab Daim Ntawv Pov Thawj Keeb Kwm.
3) Zoo ua ntej, kev pabcuam zoo tshaj plaws.