[Zhongbo.com] In the construction process of glass products, it is often necessary to use adhesives to bond various building parts. Commonly used adhesives mainly include building sealant (weathering adhesive) and structural sealant (structural adhesive). Although there are many similarities in the performance of the two, we still have to choose according to different purposes.
What is the difference between weather resistant rubber and structural adhesive?
1, structural adhesive and weather resistant adhesive
The structural adhesive is used for bonding between components (glass, profile, stone, etc.), has a structural property, and can transmit the external force and internal force of the bonded material. However, its disadvantage is that it is poor in water repellency.
Weather resistant glue is used to seal between components for waterproofing purposes. It is not structural and cannot be considered for transferring loads.
2, the main difference is that the structural adhesive load bearing, need to transmit external force, and the weather resistant rubber does not bear the weight, mainly to play a sealing role.
3. The structural adhesive is high modulus, the modulus is the ratio of force and deformation, and the structural adhesive is small when the force is equally large.
4, but the weathering adhesive adhesion is also good, can withstand a certain load.
5, because the structural glue's UV resistance is not resistant to weathering, it is easy to age due to long-term exposure to ultraviolet light. 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 properly irradiated by ultraviolet rays.
6, there is a difference in price.
7. The structural adhesive is divided into two components and one component, while the weather resistant adhesive has only one component.
8. The structural rubber elastic modulus is larger than the weather resistant rubber, but the weathering resistance is stronger than the structural rubber.
9, as the name suggests: weather-resistant glue is able to withstand the wind and rain, the sun is used as a seal, waterproofing and UV protection; structural glue is the glue that can be combined and connected structure, the adhesion is relatively large, used as a bond member.
10, stressed and unstressed.
11. The structural adhesive can withstand the external force of alternating. Under the action of external force, displacement and displacement can occur. It can not be in the harsh environment of wind, sun and rain for a long time. The weather-resistant glue can not withstand the external force for a long time, but it can be in the harsh environment of wind, sun and rain for a long time, instead of the performance change of the glue.
12, "structural rubber load-bearing, transmission of external forces; and weather-resistant rubber does not bear weight, mainly to play a sealing role" This is an accurate statement
13. "The UV resistance of structural adhesives is not resistant to weathering." This is unreasonable.
The border you see should also provide a support to prevent the structural glue from bearing shear, rather than blocking the UV light.
to sum up:
The weather resistance of structural adhesives is as good as or better than that of weathering adhesives, because the weather resistance of structural adhesives is related to safety. If the aging is fast, the consequences of falling glass are very serious, so the structural adhesives are basically silicone (silicone rubber). Naturally, it will not age. Weather-resistant rubber does not involve safety. The result of failure is generally leakage and leakage. Therefore, there are many types of weather-resistant rubber, including polyurethane, polysulfide, acrylic, etc., but weather resistance is better than silicone. In the type, mainly ç¡è‚ŸThe type is better than the alcohol type, of course, the key depends on the performance and point of action required.
zipper top stop,zipper bottom stop,zip stopper, zipper end stop,zipper pin box
RR Zipper , https://www.arrzipper.com