The failure of pressure sensitizer under extremely cold weather conditions is mainly due to interface damage. The main reason is the lack of adhesion relay between pressure sensitizer and substrate. Pressure-sensitive glue with sufficient adhesive relay requires the following conditions:

1, apply uniform pressure at the appropriate temperature so that the pressure sensitive adhesive and the sticky surface to achieve effective contact and then through the molecular motion to infiltrate the sticky surface and achieve adhesion. The low temperature pressure sensitive adhesive molecular motion delay is difficult to quickly infiltrate the adhesion surface, and at the same time low pressure sensitive adhesive modulus increases when the same pressure applied the smaller deformation effective contact area of the adhesive than the room temperature is small and eventually lead to low adhesion strength.

2, provide a certain maintenance time so that the molecular chain of the pressure sensitive adhesive is sufficiently close to the substrate surface to establish adhesion strength. Pressure sensitizer as a polymer product its molecular motion needs enough time to maintain the adhesion strength between the pressure sensitizer and the adhesive surface at the appropriate temperature for 72 hours to develop from the weaker initial strength to the final adhesion strength. The ideal adhesion effect. In this process, temperature is also an important factor that affects the time required to establish the strength of molecular motion at low temperatures. Through customer field visits, we found that many users of pressure sensitizers are not prepared for cold weather. The ambient temperature used for construction is much lower than our recommended temperature, which is the main reason for the failure of a large number of non-conventional pressure sensitizers in winter. In addition, the low ambient temperature during the storage or maintenance period of the pressure sensitive adhesive is also an important reason for the failure of the adhesive.