Erasers and plastic rulers seem to be two unrelated stationery, but they will always stick together in an inadvertent moment. This makes many people wonder what is the reason for the "indissoluble bond" between them?
The eraser and the plastic ruler will stick together, mainly because the eraser contains a plasticizer, and the material of the plastic ruler has good compatibility with the plasticizer. When the two come into contact, the plasticizer spreads to the plastic ruler, causing them to stick together like glue.
1.The role of plasticizers
A plasticizer is a chemical added to plastics that can increase their flexibility and ductility. However, plasticizers can also gradually leach out of the plastic over time, causing the plastic surface to become sticky. When the plasticizer in the eraser comes into contact with the plastic ruler, it will quickly diffuse to the surface of the plastic ruler, so that the two are tightly combined.
2.Material compatibility
Plastic rulers are usually made of materials such as polystyrene, which have good compatibility with the plasticizers in the eraser. This means that the plasticizer can easily penetrate the inside of the plastic ruler, making the bond between the two stronger. That's why, even after separating the eraser from the plastic ruler, there are often visible marks on the plastic ruler.
3.Physical deformation
In addition to chemical causes, physical deformation is also an important factor that causes the rubber and plastic ruler to stick together. Both rubber and plastic rulers are substances that are relatively easy to deform, and when the two are in contact with each other, a certain physical deformation will occur. This deformation results in an increase in the contact area between the two, which increases the adhesion between them.
Now that we know what causes the rubber and plastic ruler to stick together, we can take steps to prevent this from happening. Here are some practical suggestions:
1.Choose the best eraser and plastic ruler
When buying stationery, try to choose reliable erasers and plastic rulers of *** brands. These products typically use less plasticizer, so the likelihood of the two sticking together can be reduced.
2.Keep the rubber and plastic ruler clean
Clean the surface of the rubber and plastic ruler regularly to remove any stains and grease that may be present. This not only reduces the adhesion between the two, but also extends their lifespan.
3.Store the eraser and plastic ruler separately
Avoid keeping erasers and plastic rulers together for long periods of time, especially when they are still unused. This reduces the chance that they will come into contact with each other, which reduces the risk of sticking together.
Through the above analysis, we can see that the reason why the rubber and the plastic ruler stick together is mainly due to the combined effect of plasticizers, material compatibility and physical deformation. In order to avoid this from happening, we can choose the best stationery, keep it clean, and store it separately. Hopefully, these tips will help you better use erasers and plastic rulers, and bring convenience to your Xi and work. At the same time, everyone is also welcome to follow my account to get more practical stationery use and maintenance tips!