The influence of temperature in different regions on the operation time of screen printing silicone

The influence of temperature in different regions on the operation time of screen printing silicone
Screen printing silicone is a silicone material used for screen printing. The temperature in different regions will have a significant impact on its operation time, as shown below:
High temperature areas: In areas with higher temperatures (such as tropical areas, where the temperature often exceeds 30℃ or even higher), the activity of the curing agent or cross-linking agent in the silicone will be significantly enhanced. This speeds up the reaction between silicone molecules, and the silicone will change from liquid to solid more quickly, resulting in a significant reduction in the operation time. For example, at normal room temperature (about 25℃), screen printing silicone may have an operation time of about 30 minutes to complete printing and adjustment, but in a high temperature environment of 35℃, the operation time may be shortened to 15 minutes or even shorter. This requires operators to quickly perform screen printing operations, including a series of actions such as mixing silicone, gluing, and printing. Otherwise, the silicone may solidify prematurely during the printing process, affecting the printing quality, and causing problems such as unclear patterns and uneven thickness of the silicone layer.
Low temperature areas: In areas with lower temperatures (such as cold regions, where the temperature in winter may be below 10℃ or even below zero), the viscosity of the silicone will increase significantly and the fluidity will deteriorate. This is because low temperature will reduce the activity of silicone molecules, slow down the molecular movement, and make the silicone thicker. In this case, the operation time of silicone will be extended accordingly. For example, in an environment of 5℃, the original 30-minute operation time may be extended to 60 minutes or even longer. Although the extended operation time gives the operator more time to perform printing operations, overly thick silicone may make it difficult for the silicone to pass through the screen evenly during printing, resulting in problems such as incomplete printed patterns and uneven edges. In addition, low temperatures may also affect the final curing effect of the silicone, making it unable to achieve the expected hardness, elasticity and adhesion.
Mild temperature areas: In areas with relatively mild temperatures (usually room temperature between 20℃-25℃), the performance of screen printing silicone is relatively stable and the operation time is relatively moderate. The viscosity and fluidity of silicone are in a relatively ideal state, and the operator can complete the printing operation within the regular operation time (such as 20-30 minutes), and can better guarantee the printing quality and the curing effect of silicone. The silicone can pass through the screen evenly to form a clear and complete pattern, and it can also have good physical properties after curing.