The super glue, Or cyanoacrylate, is very effective for stick many materials, but it may encounter difficulties with certain types of plastic.
Here are some main reasons for which the super glue may not adhere plastic:
1. Plastic type
Some plastics are more difficult to stick than others.
For example, plastics based on polyethylene or polypropylene are non -polar and have very smooth and chemical -resistant surfaces, which makes them less reactive to the super glue.
These materials require glues specific such as or a surface treatment to improve adhesion.
2. Smooth surface
The super glue Works better on slightly rough surfaces where it can infiltrate and form mechanical links.
Plastics with very smooth surfaces can prevent glue to cling effectively.
3. Surface preparation
Contamination by oils, dust or other agents can prevent the super glue of stick correctly.
Cleaning plastic with alcohol or other appropriate solvent can improve adhesion.
4. Absorption
Some plastics can absorb moisture from the glue Before she had time to harden, which weakens the affair.
5. Chemical composition of glue
The formulation of super glue may not be compatible with certain plastics.
Manufacturers often develop special formulas to work with recalcitrant materials.
Solutions
For stick difficult plastics, you can:
- Use a glue Specially formulated for plastic.
- Lightly sand the surface to create a more rough texture.
- Treat the surface with a primary or activator designed to improve the grip of glue Like the brand of the brand Super glue glue 21.
Identify the type of plastic and choose the glue appropriate is essential to obtain the best results of collage.