Fluororubber adhesion promoter and method for preparing same

Abstract

The invention relates to a fluorine rubber adhesion promoter and a preparation method thereof, which is characterized in that the formula components are as follows: 1 molar ratio of hexamethylene tetramine, 1-2 molar ratio of resorcinol and proper amount of solvent; wherein, the solvent of the hexamethylene tetramine is distilled water, the solvent of the resorcinol is acetone, and the proper amount of solvent refers to the minimum application amount of the solvent for ensuring the two substances to be completely dissolved. The preparation method for the fluorine rubber adhesion promoter comprises: firstly, dissolving the resorcinol and the hexamethylene tetramine respectively in the acetone and the distilled water; then mixing and stirring the later two solutions, heating and raising the temperature to 50 DEG C to react for 1-2 hours, standing and naturally cooling to the room temperature, continuously reacting for 24 hours, filtering, washing a plurality of times by the acetone, drying and obtaining the fluorine rubber adhesion promoter. The invention has the beneficial effects that the fluorine rubber adhesion promoter can easily dissolve in solvents such as water, ethanol, and the like, decompose and generate the materials with active methylene groups under high temperature, and promote the fluorine rubber and silane adhesives to generate chemical bond, thus realizing favorable adhesion.

Description

technical field [0001] The invention relates to a fluororubber adhesion promoter and a preparation method thereof, which is an adhesion promoter capable of significantly improving the bonding performance of silane adhesives for fluororubber and metal bonding and a preparation method thereof. It belongs to the field of polymer material bonding. Background technique [0002] Silane adhesives have always been a research hotspot in the field of fluororubber and metal bonding, and they are also the most diverse and widely used ones. Successfully developed high-efficiency adhesives include Chemlok (Camlock), Metalok, Tylok, Thxion (Rohm and Haas), etc. Among them, Chemlok 607 of Lord Corporation of the United States is a silane-based special adhesive widely used in the bonding of silicone rubber, fluororubber and metal. However, silane adhesives do not have a good bonding effect on both fluororubber and metal. It has good adhesion to fluororubber but poor adhesion to metal. [...

AI Technical Summary

Problems solved by technology

However, even at low temperatures, these adhesion promoters will accelerate the hydrolysis of silane-based adhesives so that they will quickly become jelly-like substances and become invalid, which greatly shortens the application period of the adhesive (1 to 2 weeks). Ready-to-use, resulting in restricted use