High temperature resistant tape is loved by users because it can withstand higher temperatures than ordinary tapes. Do you know why high temperature tapes can withstand such high temperatures? Do you know what the viscosity and thickness of high temperature tape adhesives have on high temperature tapes Does it affect? Next, listen to the editor of the high-temperature tape manufacturer for everyone.
The thermosetting hard polymer of the high temperature resistant tape has poor flexibility due to the split chain, and the cross-linked three-dimensional network structure is not easy to deform after being tensioned, and it can withstand a higher load. Thermoplastic polymers have no cross-linking bonds, under the action of external force, the Oita chain deforms and the chain undergoes slow relative movement, resulting in creep. Its secondary length rate is higher than that of thermosetting polymers, but the load it can bear is not high.
The elastomer material of the high temperature Adhesive Tape contains many flexible segments in the polymer segment, and is prone to reversible deformation under the action of external force. The creep deformation of thermoplastics and the elastic deformation of elastomers reduce the stress concentration of the specimen under the action of shear force to a certain extent, and ease the degree of linear force on the bonding edge of the specimen. Low-weight thermoplastic resins and polyethylene polymer adhesives have a high rate of deformation without breaking under the action of external forces, but they can withstand a lower load.
The adhesive thickness of the high temperature tape in the lap joint directly affects the shear strength of the joint. Generally speaking, an increase in the thickness of the adhesive is accompanied by a decrease in the shear strength of the joint. However, it is not that the thickness of the adhesive is as thin as possible. A too thin adhesive layer is prone to lack of glue, and the lack of glue becomes a defect of the adhesive film. When stressed, the stress around the defect is easy to concentrate, which accelerates the rupture of the adhesive film. The appropriate thickness of the adhesive depends on the shape of the bonding head, the type of load and the nature of the adhesive.
