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What is the difference between weather resistant adhesive and structural adhesive?

What is the difference between weather resistant adhesive and structural adhesive?

(Summary description)

What is the difference between weather resistant adhesive and structural adhesive?

(Summary description)

Information

  What is the difference between weather resistant adhesive and structural adhesive?

  Under what circumstances should structural adhesives be used? Under what circumstances should weather-resistant glue be used?

  Everyone's opinion:

  1. Structural adhesive and weather resistant adhesive

  Structural adhesive is used for bonding between components (glass, profile, stone, etc.). It is structural and can transmit the external and internal forces of the bonded material. But its biggest disadvantage is poor water resistance.

  Weather-resistant glue is used to seal between components to achieve the purpose of waterproofing. It is not structural and cannot be considered for load transfer.

  2. The main difference is that the structural rubber is load-bearing and needs to transmit external forces, while the weather-resistant rubber does not load-bearing and mainly plays a role of sealing.

  3. Structural glue is a high modulus. The modulus is the ratio of force to deformation. When structural glue is subjected to the same force, the deformation is small.

  4. However, the adhesion of the weather resistant adhesive is also good, and it can bear a certain load.

  5. I understand that it seems that the UV resistance of the structural adhesive is not as strong as that of the weather resistant adhesive, and it is prone to aging due to long-term UV exposure. Therefore, it can be seen that many foreign unit-type hidden frame curtain walls have aluminum side brackets on the top, bottom, left, and right sides, which are used to prevent the structural glue from being exposed to ultraviolet rays.

  6. There is also a different price. Haha.

  7. But it seems that structural glue is divided into two-component and one-component, while weather-resistant glue has only one component.

  8. The elastic modulus of structural rubber is larger than that of weather-resistant rubber, but the ability of weather-resistant rubber to resist aging is stronger than that of structural rubber.

  9. I feel that, as the name suggests, weather-resistant glue is glue that can withstand wind, rain, and sun, and is used for sealing, waterproofing and UV protection; structural glue is glue that can be combined and connected with a relatively large adhesive force. For bonding two components.

  10. Forced and unstressed.

  11. The structural adhesive can withstand alternating external forces, and can be displaced under the action of external forces, and cannot be exposed to harsh environments such as wind, sun, and rain for a long time. The weather-resistant glue cannot withstand the alternating external force for a long time, but it can be exposed to the harsh environment of wind, sun, and rain for a long time, instead of changing the properties of the glue.

  12. "Structural rubber bears load and transmits external force; while weather resistant rubber does not bear load, it mainly plays a role of sealing." This should be an accurate statement.

  13. "The UV resistance of structural adhesives is not as strong as that of weather resistant adhesives." This is unreasonable.

  The frame you see should also provide a support to avoid the shear force of the structural glue, rather than blocking the ultraviolet light

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