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What are the disadvantages of PVA glue?

January 20, 2024
1. Limited bonding strength: PVA glue is not as strong as other types of adhesives, such as epoxy or super glue. It may not be suitable for applications that require a very strong bond.

2. Vulnerable to moisture: PVA glue is water-based, which means it can be easily affected by moisture. It may lose its adhesive properties or even dissolve when exposed to water or high humidity.

3. Long drying time: PVA glue typically requires a longer drying time compared to other types of adhesives. This can be a disadvantage when you need a quick bond or when working on time-sensitive projects.

4. Not suitable for certain materials: PVA glue may not work well on certain materials, such as plastics or metals. It is primarily designed for porous materials like wood, paper, or fabric.

5. Limited temperature resistance: PVA glue is not highly heat-resistant. It may soften or lose its bond when exposed to high temperatures, making it unsuitable for applications that involve extreme heat or cold.

6. Difficult to remove: Once PVA glue has dried and formed a bond, it can be challenging to remove or undo the bond without damaging the material. This can be a disadvantage if you need to disassemble or repair something that was glued with PVA glue.

7. Limited shelf life: PVA glue has a limited shelf life compared to some other adhesives. It can deteriorate or become less effective over time, especially if not stored properly.

Overall, while PVA glue has its advantages, such as being non-toxic and easy to clean up, it may not be the best choice for certain applications that require stronger bonds, resistance to moisture or heat, or compatibility with specific materials.
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