What is the Cure Time T90 of the adhesive
Cure Time T90 refers to the time required for the adhesive to cure in the assembly under certain conditions such as temperature and pressure. Depending on the type of adhesive, the Cure Time T90 varies widely. Some can be cured at room temperature, and some require several days. The Cure Time T90 is closely related to the curing temperature. The Cure Time T90 can be shortened by increasing the temperature, and the Cure Time T90 can be appropriately extended by decreasing the temperature, that is, the Cure Time T90 and the curing temperature have a time-temperature equivalent. However, if it is below the curing temperature of the adhesive, no matter how long the Cure Time T90 is, it will not be completed, so the time temperature equivalent of curing is a certain prerequisite.
After heating and curing for a specified time, the bonded part cannot be taken out immediately and cooled quickly, which avoids the quotient internal stress caused by uneven collection and uneven weaving. It should be slowly cooled to a certain temperature before being removed from the heating equipment and cooled to room temperature in the oven, and should be cured at room temperature or heated for sufficient Cure Time T90 to complete the curing. Good bond strength is obtained. Curing is the process of obtaining good bonding properties and is very important in the bonding process and every effort should be made to make the degree of curing more complete.