How to clean the film stick correctly?
The cleaning of the coating rod directly affects the operation of the subsequent coating conductivity meter. In the process of using the coating rod, the bar coater is usually in contact with various raw materials, such as adhesive, ink, color paste and the like. Therefore, after the coating rod is used, the washing step is very important. Generally, it is necessary to select a corresponding soluble solvent as a clear tinplate washing liquid.
Coating rod cleaning step
The first step is to â€œsmearâ€ and wipe off the excess paint on the coated stick with a soft linen or cotton velvet cloth.
The second step is "bubble", and the coating rod is immersed in a suitable cleaning solution (such as a solvent, etc.) and soaked for about 15 minutes or longer.
The third step is to "dip" the agitator, wipe the coating rod with a soft linen or cotton velvet cloth, and if necessary, soak it again.
The fourth step of "wiping" the rotary wiping method is more effective than wiping the strip along the strip.
The fifth step is â€œwashingâ€. If the polyester/ink is dry, try using a copper brush â€“ the one that cleans the suede shoes for cleaning.
It should be cleaned immediately after application with a coated stick. It is more difficult to clean for a long time.
Do not use abrasive cloth such as agitator steel brush or scouring pad, which is easy to cause damage to the wire, especially those with thin diameter.
If necessary, the ultrasonic bath can be used for cleaning. Generally speaking, the effect is better.
For more information on the coated stick, you may wish to take a look: http://
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Ether and Aldehyde
Ether is the product that hydrogen from hydroxyl group in alcohol or phenol is replaced by a hydrocarbyl group. The general formula is R-O-R', R and R' can be the same, also can be. If same, it is called simple ether or symmetric ether. if different, it is called mixed ether. Most ethers are colorless liquids at room temperature, have a scent, have a low boiling point, lighter than water, and have stable properties. Ethers generally have anesthetic effects. For example, ether is commonly used in clinical inhalation anesthetic.
The same ether of the two hydrocarbon groups becomes a symmetric ether, also called a simple ether. The two ethers with different hydrocarbyl groups are called asymmetric ethers, also called mixed ethers.
According to the classification of two hydrocarbon groups, ethers can also be divided into fatty ethers and aromatic ethers.
Most ethers are volatile, flammable liquids, most ethers are insoluble in water.
Functional group is -CHO (aldehyde group), the general formula is RCHO. R- can not be hydrocarbyl group, for example R- of hydroxyacetaldehyde is HOCH2-. R- can also be hydrocarbyl group, such as alkyl, alkenyl, aryl or cycloalkyl group. According to the number of aldehyde groups, it can be divided into monoaldehyde and polyaldehyde. The lower aldehyde is liquid, the higher aldehyde is solid, and only formaldehyde is gas. Aldehydes are very active in chemistry and can react with sodium bisulfite, hydrogen, ammonia, etc., and are easily oxidized to the corresponding carboxylic acids by weak oxidants. The use of aldehydes is extensive. Formaldehyde vapors can sterilize air. Formaldehyde solutions can be used for preservation of biological specimens. Fatty aldehydes generally have anesthetic and hypnotic effects. For example, chloral hydrate is an early synthetic hypnotic agent.
Ether And Aldehyde,Aldehyde Dimethyl Ether,Glycol Dimethyl Ether,Diethyl Ether
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