Provided rubber itself is not clean, containing some impurities; The burning time of the compound may be too short; The temperature of the extrusion body, head or die is too high; The rubber flow in the head is not smooth, and there are residual rubber materials in the dead corner; The screw surface is not smooth, there are viscose and other reasons may lead to the appearance of clinker particles (that is, early vulcanized rubber particles) or impurities on the surface of the rubber sleeve cable.
You are not to solve copper oxidation, the reason: to have oxygen to oxidize, moisture will speed up oxidation. Solution: 1 Simple way is to apply oil,2 paint, 3 indicate electroplating treatment. Prevention: Keep the surrounding air circulating and dry.
Under the premise of ensuring stable pay-off, try to close the preheater to the head to avoid heat loss 2: When the surface moisture of the conductor is relatively serious, the preheater should be wiped before entering to avoid conductor oxidation and spots. 3: Pay attention to the temperature change of the preheater and turn off the preheater when necessary during production debugging, line breaking treatment and other abnormal treatment.
The exposed part of the conductor should be sealed when the insulated wire enters the steam room. Generally, heat shrink tubes are used to cover the two heads of the cable to prevent water. There's a gap in the conductor. Water vaporIt oxidizes easily at high temperatures.
The earphone cable will become rigid due to oxidation after a long time? How to solve this problem? You need to know why it's hardening before you can target it, right? The headphone wire is actually the wire we usually say, the outer insulating conductor inner core. The most likely cause of hardening is the aging of the outer insulator (mostly plastic products), which becomes brittle and hard... It's irreversible, dear.
From a chemical point of view, copper wire is made of copper, if it comes into contact with oxygen it will become copper oxide, the color of copper oxide is black. So the wires and cables areAfter a period of use, the copper wire will turn black, which indicates that it is in contact with oxygen, and it will definitely change.
1, with vinegar soaked cloth, cover the entire double-sided tape traces, until the back glue is all wet vinegar cloth after soaking, use a ruler to gently remove the back glue. You can use the usual nail polish to remove nail polish water, the nail water on the glue, wait a few minutes, the glue will fall off, you can now a small place to experiment.
2, HowRemove the adhesive from the back of the phone Wireless adhesive ? The following are several effective methods: wind oil essence method: The wind oil essence is applied to the area of adhesive residue, let it sit for a few minutes to take effect, and then gently wipe it clean with a damp cloth. Toothpaste method: Apply a small amount of toothpaste on the adhesive part, if the glue stain is dry, you can dilute it with water. Gently massage the spots to soften them.
3. Try using an eraser. At the beginning, it may feel more and more dirty, but after a period of time, the adhesive will gradually loosen, and this method is more laborious and requires patience. Soak the phoneIn water, add a small amount of dishwashing liquid, and then scrub with an old toothbrush, can effectively remove the adhesive. With a cloth dipped in alcohol or erguotou, directly wipe the adhesive part, can also achieve the effect of removal.
4, if the mobile phone case accidentally contaminated with wireless adhesive 502 glue, you can try to use a warm wet cloth applied in the adhesive. After waiting for about 10 minutes, the cured glue usually becomes soft and can be removed by a gentle wipe. If the glue is not fully cured, you can directly drop a drop of 502 glue on the glue, which can make the cured glue soft againThen wipe with a damp cloth to remove. Adhesive 502 glue can be treated with insulating oil.
5, to remove the adhesive on the phone case, you can try to use nail polish remover. First, set the hair dryer to hot air mode and blow hot air at the adhesive area until the adhesive softens. Next, apply nail polish remover to the adhesive and wait about 5 minutes. Finally, wipe gently with a rag until the adhesive is removed. If the adhesive is difficult to remove, you can try the following method: Drop some 502 glue on the adhesive, let it melt, and then quickly rinse with water.
6, secondly, there are some small partners directlyTwo-component polyurethane adhesive and waterborne polyurethane adhesive for assembly. Automotive interior parts are also an area where the amount of adhesives is growing.
2, solvent-based polyurethane adhesive: this is the most common class of solvent-based adhesives, with good bonding strength and durability. Its components mainly include polyurethane and some organic solvents. This kind of adhesive is widely used in furniture manufacturing, automotive interior, construction and other industries. Solvent-based acrylate adhesives: These adhesives have excellent water resistance, chemical resistance and UV resistance.
3, glue JL-6810 high temperature resistant single componentPolyurethane glue can be rolled, painted, brushed, sprayed and other forms of uniform coating on the surface of the bonded material, and then scraped.1KG adhesive can be coated on 4-5㎡ of the bonded material surface, the operation time is about 0.5H. Press the coated item on its surface under 0.1Mpa pressure to extrude excess glue, wipe.