Polyetheramine Technical Characteristics and Polyetheramine Expiration Processing
Polyetheramine technology is specifically for the production of polyetheramine products. As technology continues to improve, the features of polyetheramines are slowly emerging. Many customers value these features very much.
The outstanding feature of polyetheramines is that as the molecular weight of the polyether increases, its viscosity and index increase accordingly. So what are the five characteristics of polyetheramine technology?
1. Sticky pressure characteristics
The viscosity-pressure characteristics of products produced by polyetheramine technology are determined by the chemical structure and length of the molecular chain. The coefficient of viscosity is usually lower than the coefficient of viscosity of mineral oil of the same viscosity.
2. Low-temperature Fluidity
Polyether amines generally have a lower freezing point and better low-temperature fluidity.
The polarity of the product based on the application of polyetheramine technology. If there is a lower viscosity coefficient. A very stable lubricant film with high adsorption and load carrying capacity can be formed in almost all lubrication states. This lubricant film has a low coefficient of friction and strong shear resistance. It is more lubricious than mineral oils, polyalphaolefins, and diesters, but not as well as polyol esters and phosphates.
4. Thermal oxidation stability
The thermal oxidation stability of polyetheramine technology is not superior to mineral oils and other synthetic oils. It is easily broken by the action of oxidation. A low molecular carbonyl group and a carbonyl compound are formed. It evaporates quickly at high temperatures.
Therefore, polyetheramine technology does not produce deposits and gelatinous substances at high temperatures. The viscosity gradually decreases without increasing. Polyetheramine has good susceptibility to oxygen. The decomposition temperature of the polyetheramine is 240 to 250 ° C, after the addition of the inhibitory phenols and aromatic amine antioxidants.
5. Water solubility and oil solubility
Adjusting the ratio of alkylene oxide in the molecule gives products with different solubility. The higher the proportion of ethylene oxide, the greater the solubility in water. Water solubility increases as the molecular weight decreases and the proportion of terminal hydroxyl groups increases.
The water solubility of ethylene oxide and propylene oxide copolyether decreases with increasing temperature. When the temperature rises to a certain extent, the product is precipitated, and this property is called reverse solubility. Using this property, its aqueous solution can be used as a good quenching liquid and metal cutting fluid.
Expired treatment of polyetheramine
Any product will have its shelf life. Of course, polyetheramines are no exception. As a relatively common chemical raw material, the shelf life of polyetheramines must be understood.
If the shelf life is exceeded, what should we do in this case? Polyetheramines are not the same as other chemicals. It is relatively simple to handle when it is processed. But we can’t just let it out like sewage. The expired polyetheramines can be treated as follows.
- The unopened polyetheramines can be notified to the manufacturer or supplier for re-inspection. After the re-inspection is passed, it can continue to be used normally.
- The product quality has been damaged (re-inspection failed). You can find some regular polyetheramines recycling manufacturers. That can reduce a little loss.
- You can also handle it yourself (requires considerable knowledge of polyetheramines).