Among the main technical indicators of silicone weather resistant adhesive, the construction performance is characterized by sag, extrudability, and surface drying time. The main performance indicators of cured silicone weather resistant adhesive are displacement ability and mass loss rate. The mass loss rate of silicone weather resistant adhesive is equivalent to the thermal weight loss of structural adhesive, mainly examining the performance changes of silicone weather resistant adhesive after long-term use. The higher the mass loss rate, the more severe the performance degradation after long-term use.

The main function of silicone weather resistant adhesive is to seal the joints between plates. Due to the frequent displacement of plates due to temperature changes, deformation of the main structure, etc., the width of the joints will also change accordingly. This requires silicone weather resistant adhesive to have good resistance to joint displacement and not crack under long-term changes in joint width. This performance is called the displacement capacity of silicone weather resistant adhesive, which is different from the "displacement resistance" of structural adhesive.