The structure of silicone resin itself
Common silicone resins have methyl silicone resins, methyl phenyl silicone resins, propyl silicone resins, etc., among different silicone resins, organic groups on the bonding of the material has a certain degree of difference, different organic group content, silicone structure and so on will have an impact on the bonding of the material.
Composition and interface properties of the bonded material
Such as adhesive polyolefin material, containing fluorine materials, inorganic materials, metal materials, such as its chemical composition, interface structure differences, will lead to a larger bonding strength of differences, some material is easy to bond, some are more difficult to bond, some even need to introduce some special functional groups, so as to improve the interface bonding performance.
It is treated by the interface of the binder
In many cases, the surface of the material needs some special treatment, such as improving the active oxidation treatment of the surface, plasma treatment, silane coupling agent treatment, or even modifying the interface of the material.
Adjust the composition of the binder formula
For example, the ratio of cross-linking reaction groups and catalysts need to be investigated, so as to obtain a more reasonable ratio of binder.
Addition of viscosifier
Silicone resin itself, the bonding performance is very poor, it is necessary to add some adhesive additives, reinforcing materials, etc., in the binder group need to pay attention to. Generally speaking, the adhesion of modified organosilicon modified polyester is mainly provided by polyester.
Curing conditions of binder
Under different curing conditions, the adhesiveness of silicone resins is different. In the configuration, the need to carefully consider the curing temperature, time, pressure, etc., to find the best process conditions, otherwise it will lead to a serious decline in the bond strength of the material.
The bonding strength of silicone resin will directly affect the use of the finished product, such as the use of anti-corrosion material on the metal surface, the use of high-temperature resistant coating in kitchen utensils and so on.