(1) Extrudability: The extrudability of the glue can be initially felt by the difficulty level of the glue.
(2) Curing performance: After the rubber strip is printed, the dry time, the tack free time and the complete curing time can be determined to determine whether the curing performance is normal.
(3) Thixotropy: After the rubber strip is shot, the horizontal placement is not deformed, and the surface sealant is thixotropic. If there is a phenomenon of rogue deformation, it indicates that the thixotropic is not good.
(4) Hardness: After the rubber strip is completely cured (generally 1-2 days), it can be felt by pressing the strip with a finger. This method can compare the hardness relatively.
(5) Strength, elasticity and elongation: Pulling the fully cured strip can make a relative judgment on strength, elasticity and elongation. Attention must be paid to this experiment: we usually put the strip on the paper. After peeling off the strip from the paper, a layer of paper is often stuck on the strip. If the strip is pulled, the paper is not Elastic, one pull will tear, and the strip stuck on the paper will tear open a hole. Because the silicone sealant is generally low in tear strength, the stress generated by stretching will concentrate on tearing. Cracks, it is easy to pull the strip from here, affecting observation and judgment. The correct way is to put the strip on the plastic film, and pull the strip to judge the performance after the strip is completely cured.