BASF Coolants General Presentation
► History of Coolant Base Fluid Development│││：/冷凍液基礎液的發展歷史│││：
• Alcohols 醇 低沸點✘·，易燃
- Disadvantages: Low Boiling Point; Potential Fire Hazard
• Salts 鹽 易致鏽✘·，易結晶沉澱
- Disadvantages: Corrosiveness; Deposits by Cristallisation
• Glycerine 甘油 粘度高✘·，防凍差✘·，與橡膠不相容
- Disadvantages: High Viscosity; Less Freezing Protection; Incompatibility with Rubber Hoses
The Solution: Mono Ethylene Glycol / 解決方法│││：乙二醇
BASF Patent granted in 1929. Brand Name:Glysantin / 巴斯夫於1929年取得專利 商品名稱: GLYSANTIN
► Characteristics of Good Engine Coolants:/優秀髮動機冷凍液的特點:
• Prevention of Corrosion/防鏽
• Prevention of Cavitation/抗汽蝕
• Prevention of Over-heating/防過熱
• Excellent Heat Transfer/良好的導熱性
• Stability at high Temperature/高溫穩定性
• Compatibility with Hard Water/對硬水的高容忍性
• Little Swelling of Rubber and Elastomeres/不會引起橡膠及高彈體的明顯膨脹
• Low Foaming Tendency/低泡
• Prevention of Deposits/防沉澱
• Freeze Protection/防凍
► Basic Formulation of Coolants/冷凍液的基本組成│││：
1. Base Fluid/基礎液（Mono EthyleneGlycol/乙二醇）✘·，> 90% + Additives/新增劑（Surface activeInhibitors prevent/表面活性抑制劑(Corrosion/防鏽☁✘✘·•、Cavitation/防汽蝕☁✘✘·•、Deposits/防沉澱；Others/其他│││：pH Buffer/緩衝pH☁✘✘·•、Defoamer/消泡☁✘✘·•、Stabilizer/穩定)）✘·，5-7% + Water/水（as by-productsfrom components/反應副產品）✘·，3 - 5% = Coolant Concentrate/原液.
2. Coolant Concentrate原液(30 – 60%) + Water 水(40 – 70%) = Coolant/冷凍液(ready to use/即用型).
