Join two broke pieces of the same material

  • Thread starter scientifico
  • Start date
  • Tags
    Material
In summary, the reason why broken pieces of wood cannot be easily rejoined is due to surface modification and deformation of the material during breakage. Additionally, energy must be added to the system to facilitate the joining process, even though some atoms do attract each other. This can be compared to starting a fire, where energy must be added first before heat can be generated.
  • #1
scientifico
181
0
Hello, if I broke for example a piece of wood in two pieces I give the atoms enough force to separate in the break point with the others, so why putting the two pieces together and pressing them the atoms don't join again ?

Thank you!
 
Physics news on Phys.org
  • #2
This is possible with metal, but it has to be extremely clean and in a vacuum.
If you break wood, you modify the surfaces, if you try to combine them again you get a lot of ripples which do not fit. And on a molecular level, you need energy to combine the parts as well, which would be released as heat afterwards.
 
  • #3
why would I need energy if atoms attract each others?
 
  • #4
scientifico said:
why would I need energy if atoms attract each others?
Deformation of the material during breakage would prevent you from joining them cleanly afterward.
 
  • #5
scientifico said:
why would I need energy if atoms attract each others?
Atoms do not generally attract each other. Some do, some do not. In many cases, you have to add some energy to the system first, even if you can extract more energy afterwards.

Think of a wood fire: It burns, and it can release a lot of heat. But if you just place wood somewhere, it does not begin to burn. You have to add energy first.
 

FAQ: Join two broke pieces of the same material

How can I join two broken pieces of the same material?

The best way to join two broken pieces of the same material is to use an adhesive that is specifically designed for that material. Make sure to clean and roughen the surfaces of the broken pieces before applying the adhesive for a strong bond.

Can I use any type of adhesive to join two broken pieces of the same material?

No, it is important to use an adhesive that is compatible with the material you are trying to join. Not all adhesives will work well with every material, so be sure to check the label or consult with a professional for the best adhesive for your specific material.

How long does it take for the adhesive to dry and create a strong bond?

The drying time and strength of the bond will depend on the type of adhesive used and the material being joined. Follow the instructions on the adhesive label for the recommended drying time and curing time before putting any stress on the bond.

Is it possible to repair a broken piece of a material without using an adhesive?

In some cases, it may be possible to repair a broken piece of material without using an adhesive. This could involve using specialized techniques such as welding or sewing, depending on the type of material. However, using an adhesive is often the easiest and most effective way to join two broken pieces of the same material.

Can I join two broken pieces of different materials using the same adhesive?

It is not recommended to use the same adhesive for joining two broken pieces of different materials. Each material may require a specific type of adhesive for a strong bond. Using the wrong adhesive may result in a weak bond or even damage to the materials.

Back
Top