CN1970705A - Automobile brake fluid and its preparing process - Google Patents
Automobile brake fluid and its preparing process Download PDFInfo
- Publication number
- CN1970705A CN1970705A CN 200510104583 CN200510104583A CN1970705A CN 1970705 A CN1970705 A CN 1970705A CN 200510104583 CN200510104583 CN 200510104583 CN 200510104583 A CN200510104583 A CN 200510104583A CN 1970705 A CN1970705 A CN 1970705A
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- CN
- China
- Prior art keywords
- isopropanediol
- polyethers
- diethylene glycol
- ethyl ether
- glycol ethyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a new-typed automobile bracking liquid and making technique in the organic macromolecular polyether and polyester making technique and metal and rubber protective domain technique, which is characterized by the following: adopting boracic acid grease as host; reacting with lubricant, diluent and additive under certain temperature; possessing superior high-temperature gas resistance and low-temperature fluidity; improving absorbent-proof effect and vescosity without etching copper, ferric, lead and steel.
Description
(1) technical field under
New automobile braking liquid and manufacturing process thereof relate to the protection and the protection field of the manufacturing technology of organic high molecular polyether, polyester and metallic substance, elastomeric material, belong to inhibition, anti-oxidant, anti-aging technology.
(2) background technology
Following process has mainly been experienced in the development of motor vehicle brake fluid.First on behalf of alcohol brake fluid, main component is Viscotrol C and alcohol mixed solution or mineral oil, it is lower (as the existing ethanol of China 78C only because of boiling point, easily cause the high temperature vapour lock), zero pour height poor performance such as (Viscotrol C are a 10C, easily solidifies the viscosity number height), cause brake failure and can not guarantee traffic safety, the forties is eliminated it in the world.S-generation product is the alcohol ether type braking fluid, and the main body component is the Soxylat A 25-7 compounds, and the high and low temperature performance of this series products all is better than alcohol brake fluid, but it easily absorbs water and causes boiling point to descend significantly, so high-temperature behavior does not have reliable assurance, and this type of product cost is higher, be difficult for promoting.Behind the seventies, development have high do, the synthetic brake fluid of new generation of wet reflux boiling point and low low temperature viscosity just become various countries to finish the phase hot of research and development.Transportation division of the United States Federal (DOT) has proposed standard system hydrodynamic DOT-3, DOT-4 and DOT-5 after 1972 dry refluxing boiling point is respectively 205 ℃, 230 ℃, 260 ℃; Low temperature viscosity (40 ℃ time) is respectively less than 1500,1800 and 900mm/s.But China is so far still using alcohol brake fluid, than having fallen behind decades in the world.
(3) summary of the invention
In view of the shortcoming of pure type motor vehicle brake fluid, the object of the present invention is to provide that a kind of boiling point high and low temperature performance is good, viscosity index is high, aging, the swelling of corrosion of metal, rubber there are better inhibiting synthetic motor vehicle brake fluid and manufacturing process thereof.
The present invention is achieved through the following technical solutions:
The present invention is raw material with the Isopropanediol, with the propylene oxide polymerization, generates macromolecular polyethers as base oil in the presence of potassium hydroxide.The diethylene glycol methyl ether that makes with oxyethane and methyl alcohol effect is a solvent, adds inhibiter, oxidation inhibitor, stablizer and additive, gets this product, main raw material and various raw material usage ratio following (WT%) under the certain temperature reaction:
Isopropanediol polyethers 23-35%
Diethylene glycol ethyl ether 62-75%
Diethanolamine 1-3%
T 706 0.1-1％
Dodecenylsuccinic acid salt 1-4%
Production sequence of the present invention is: Isopropanediol polyethers, diethylene glycol ethyl ether are added reactor, be heated with stirring to certain temperature after, add diethanolamine, insulation reaction 60 minutes adds methylphenol etc., after stirring evenly, leaves standstill and gets product in 40 minutes.
The present invention and existing product are than can be described as the multi-purpose vehicle(MPV) braking fluid, no matter be to use in the south of sweltering heat can not produce vapour lock, the north in cold, guarantee to have certain fluidity again, be difficult for solidifying, the DOT-3 of transportation division of the United States Federal, the DOT-4 standard that generally acknowledge its HZ-3, HZ-4 series index and world market, the contrast test data are as follows:
| The specification project | DOT series | HZ series | |||
| DOT-3 | DOT-4 | HZ-3 | HZ-4 | ||
| Equilibrium reflux boiling point | ＞205℃ | ＞230℃ | 211℃ | 288℃ | |
| Kinematic viscosity | 100℃ | ＞1.5mm 2/s | ＞1.5mm 2/s | 1.74mm 2/s | 2.04mm 2/s |
| -40℃ | ＜1500mm 2/s | ＜1800mm 2/s | 1024mm 2/s | 1584mm 2/s | |
| PH value | 7.0-11.5 | With a left side | 8.6 | 8.2 | |
| Metallic corrosion (100 ℃ of 120h) | Tinplate | ±0.2mg/cm 2 | With a left side | Do not have | Do not have |
| Steel | ±0.2mg/cm 2 | With a left side | 0.2mg/cm 2 | Do not have | |
| Aluminium | ±0.1mg/cm 2 | With a left side | 0.2mg/cm 2 | 0.02mg/cm 2 | |
| Cast iron | ±0.2mg/cm 2 | With a left side | 0.02mg/cm 2 | Do not have | |
| Brass | ±0.4mg/cm 2 | With a left side | 0.13mg/cm 2 | 0.04mg/cm 2 | |
| Purple steel | ±0.2mg/cm 2 | With a left side | 0.08mg/cm 2 | 0.1mg/cm 2 | |
| Copper corrosion (100 ℃ 3 hours) | Evenly variable color does not have the hole point | With a left side | Light does not have the hole point as before | Light as tough nothing hole point | |
| Rubber S degree B tests R | Root directly rises in value | 0.15-1.4mm | With a left side | 0.20mm | 0.18mm |
| Outward appearance | No bubbling is not analysed carbon black | With a left side | No bubbling is not analysed carbon black | No bubbling is not analysed carbon black | |
Production technique of the present invention is simple, cost is low, non-pollution discharge, performance surpasses Japan, German fully, and reaches or part index number surpasses that transportation division of the United States Federal formulates, existing international DOT-3, DOT-4 standard.
(4) embodiment
Embodiment: take by weighing ethanol 270Kg, add reactor jointly with 180Kg boron trifluoride-methyl ether solution, the heating controlled temperature is at 75-85C, after adding epoxy methane 600Kg reaction then, product neutralizes with sodium butylate, and ethanol (115-125 ℃) and ethylene glycol monoethyl ether (165-175 ℃) are reclaimed in distillation, and gained leftover bits and pieces high boiling material is a crude product, the 230C cut is collected in air distillation, promptly gets diethylene glycol ethyl ether.
Take by weighing Isopropanediol polyethers 28Kg, diethylene glycol ethyl ether 67Kg, be heated with stirring to 75 ℃ of adding diethanolamine 1.5Kg, stir insulation (75C) reaction 60 minutes, add after methylphenol 0.skg, T706 0.skg, dodecenylsuccinic acid salt Zkg stir, leave standstill and got product in 40 minutes.
Claims (1)
- A kind of high boiling point, low-freezing, new automobile braking liquid and manufacturing process thereof that viscosity index is high is characterized in that with Isopropanediol polyethers, diethylene glycol ethyl ether be main raw material, add methylphenol etc. auxiliary agent is synthetic to form.Various materials amount ratios (WT%) are, Isopropanediol polyethers 23-35%, diethylene glycol ethyl ether 6 2-75%, diethanolamine 1-3%, methylphenol 0.1-1%, T7060.1-1%, dodecenylsuccinic acid salt 1-4%, its production sequence is that Isopropanediol polyethers, diethylene glycol ethyl ether are added reactor, add diethanolamine after heating, after 75 ℃ of insulation reaction, add additive auxiliary agents such as methylphenol, leave standstill after stirring evenly and got product in 40 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510104583 CN1970705A (en) | 2005-11-24 | 2005-11-24 | Automobile brake fluid and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510104583 CN1970705A (en) | 2005-11-24 | 2005-11-24 | Automobile brake fluid and its preparing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1970705A true CN1970705A (en) | 2007-05-30 |
Family
ID=38111731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510104583 Pending CN1970705A (en) | 2005-11-24 | 2005-11-24 | Automobile brake fluid and its preparing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1970705A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604719A (en) * | 2012-02-08 | 2012-07-25 | 无锡中石油润滑脂有限责任公司 | Braking fluid for motor vehicle and preparation method thereof |
| CN113002513A (en) * | 2021-05-07 | 2021-06-22 | 雷沃工程机械集团有限公司 | Gas brake system for loader and method for controlling gas temperature by using same |
-
2005
- 2005-11-24 CN CN 200510104583 patent/CN1970705A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604719A (en) * | 2012-02-08 | 2012-07-25 | 无锡中石油润滑脂有限责任公司 | Braking fluid for motor vehicle and preparation method thereof |
| CN113002513A (en) * | 2021-05-07 | 2021-06-22 | 雷沃工程机械集团有限公司 | Gas brake system for loader and method for controlling gas temperature by using same |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |