Special structure film for mirror seat of rear-view mirror in automobile and preparation method thereof

Abstract

The invention relates to a special structure film for a mirror seat of a rear-view mirror in an automobile. The structure film is prepared from the following raw materials in parts by weight: 20-100 parts of acrylonitrile-butadiene rubber, 0-70 parts of polysulfide rubber which is not cured fully, 5-40 parts of bisphenol A type epoxy resin, 10-60 parts of modified epoxy resin, 0.1-2.5 parts of cross-linking agent, 0.2-2.5 parts of softening agent, 3-20 parts of curing agent, 1-10 parts of accelerant, 20-100 parts of inorganic filler and 0.1-3.0 parts of silane coupling agent. The structure film disclosed by the invention has the advantages of good film-forming performance, good aging resistance, simple curing process, high strength of structural adhesive after curing, good toughness, excellent heat resistance and cold resistance and the like.

Description

technical field

[0001] The invention relates to a special structural film for a mirror seat of an interior rearview mirror of an automobile and a preparation method thereof, belonging to the technical field of adhesives and the field of automobile glass production. Background technique

[0002] The car interior rearview mirror is a tool used to observe the interior of the car and is one of the necessary parts of the car. The interior rearview mirror of the automobile is generally connected with the front windshield glass of the automobile through the rearview mirror mirror holder. Generally, OEMs require the front windshield to be equipped with a rearview mirror base before leaving the factory. Therefore, it is of great significance to choose a method that conforms to the windshield glass processing process to fix the rearview mirror base on the front windshield of the car. At present, the most common method is to use structural adhesives to fix the mirror base on the front...

Examples

Embodiment 1

[0030] 40 parts of nitrile rubber, 35 parts of epoxy resin E-44, 20 parts of epoxy resin E-12, 0.5 parts of sulfur powder, 2.0 parts of stearic acid, 12 parts of dicyandiamide, 10 parts of silver powder, 40 parts of nano calcium carbonate , 10 parts of fumed silica, 1.5 parts of silane coupling agent, 4.0 parts of methylimidazole, and 3.0 parts of modified urea.

[0031] The specific preparation steps are as follows: Add nitrile rubber, epoxy resin, modified epoxy resin, vulcanizing agent and softener into the kneader according to the proportion, stir at a medium speed for 100 minutes, mix thoroughly, and control the temperature of the glue < 80 °C at the same time; Add the filler to the kneader, stir at low speed for 80 minutes, and control the glue temperature < 80°C; add the curing agent, accelerator and silane coupling agent into the kneader, stir at low speed for 80 minutes, and control the glue temperature < 50°C at the same time, after fully mixing Obtain the required s...

Embodiment 2

[0034] 40 parts of nitrile rubber, 30 parts of incompletely cured polysulfide rubber (A:B=20:1), 35 parts of epoxy resin E-44, 20 parts of epoxy resin E-12, 0.5 parts of sulfur powder, stearin 2.0 parts of acid, 10 parts of dicyandiamide, 10 parts of silver powder, 40 parts of nano-calcium carbonate, 10 parts of fumed silica, 1.5 parts of silane coupling agent, 3.0 parts of methylimidazole, and 2.0 parts of modified urea.

[0035] The specific preparation steps are as follows: Add nitrile rubber, epoxy resin, modified epoxy resin, vulcanizing agent and softener into the kneader according to the proportion, stir at a medium speed for 100 minutes, mix thoroughly, and control the temperature of the glue < 80 °C at the same time; Add the filler to the kneader, stir at low speed for 80 minutes, and control the glue temperature < 80°C; add the curing agent, accelerator and silane coupling agent into the kneader, stir at low speed for 80 minutes, and control the glue temperature < 50°...

Embodiment 3

[0038]50 parts of nitrile rubber, 20 parts of incompletely cured polysulfide rubber (A:B=20:1), 30 parts of epoxy resin E-44, 35 parts of nitrile modified epoxy resin, 1.0 part of sulfur powder, hard 2.0 parts of fatty acid, 6.0 parts of dicyandiamide, 8.0 parts of silver powder, 38 parts of nano-calcium carbonate, 9 parts of fumed silica, 1.5 parts of silane coupling agent, 1.0 part of zinc oxide, 4.0 parts of imidazole, and 1.0 part of modified urea.

[0039] The specific preparation steps are as follows: Add nitrile rubber, epoxy resin, modified epoxy resin, vulcanizing agent and softener into the kneader according to the proportion, stir at a medium speed for 80 minutes, and mix thoroughly, while controlling the temperature of the glue to <80°C; Add the filler into the kneader, stir at low speed for 50 minutes, and control the glue temperature < 80°C; add the curing agent, accelerator and silane coupling agent into the kneader, stir at low speed for 60 minutes, and control ...

technical field

[0001] The invention relates to a special structural film for a mirror seat of an interior rearview mirror of an automobile and a preparation method thereof, belonging to the technical field of adhesives and the field of automobile glass production. Background technique

[0002] The car interior rearview mirror is a tool used to observe the interior of the car and is one of the necessary parts of the car. The interior rearview mirror of the automobile is generally connected with the front windshield glass of the automobile through the rearview mirror mirror holder. Generally, OEMs require the front windshield to be equipped with a rearview mirror base before leaving the factory. Therefore, it is of great significance to choose a method that conforms to the windshield glass processing process to fix the rearview mirror base on the front windshield of the car. At present, the most common method is to use structural adhesives to fix the mirror base on the front...

Examples

Embodiment 1

[0030] 40 parts of nitrile rubber, 35 parts of epoxy resin E-44, 20 parts of epoxy resin E-12, 0.5 parts of sulfur powder, 2.0 parts of stearic acid, 12 parts of dicyandiamide, 10 parts of silver powder, 40 parts of nano calcium carbonate , 10 parts of fumed silica, 1.5 parts of silane coupling agent, 4.0 parts of methylimidazole, and 3.0 parts of modified urea.

[0031] The specific preparation steps are as follows: Add nitrile rubber, epoxy resin, modified epoxy resin, vulcanizing agent and softener into the kneader according to the proportion, stir at a medium speed for 100 minutes, mix thoroughly, and control the temperature of the glue < 80 °C at the same time; Add the filler to the kneader, stir at low speed for 80 minutes, and control the glue temperature < 80°C; add the curing agent, accelerator and silane coupling agent into the kneader, stir at low speed for 80 minutes, and control the glue temperature < 50°C at the same time, after fully mixing Obtain the required s...

Embodiment 2

[0034] 40 parts of nitrile rubber, 30 parts of incompletely cured polysulfide rubber (A:B=20:1), 35 parts of epoxy resin E-44, 20 parts of epoxy resin E-12, 0.5 parts of sulfur powder, stearin 2.0 parts of acid, 10 parts of dicyandiamide, 10 parts of silver powder, 40 parts of nano-calcium carbonate, 10 parts of fumed silica, 1.5 parts of silane coupling agent, 3.0 parts of methylimidazole, and 2.0 parts of modified urea.

[0035] The specific preparation steps are as follows: Add nitrile rubber, epoxy resin, modified epoxy resin, vulcanizing agent and softener into the kneader according to the proportion, stir at a medium speed for 100 minutes, mix thoroughly, and control the temperature of the glue < 80 °C at the same time; Add the filler to the kneader, stir at low speed for 80 minutes, and control the glue temperature < 80°C; add the curing agent, accelerator and silane coupling agent into the kneader, stir at low speed for 80 minutes, and control the glue temperature < 50°...

Embodiment 3

[0038]50 parts of nitrile rubber, 20 parts of incompletely cured polysulfide rubber (A:B=20:1), 30 parts of epoxy resin E-44, 35 parts of nitrile modified epoxy resin, 1.0 part of sulfur powder, hard 2.0 parts of fatty acid, 6.0 parts of dicyandiamide, 8.0 parts of silver powder, 38 parts of nano-calcium carbonate, 9 parts of fumed silica, 1.5 parts of silane coupling agent, 1.0 part of zinc oxide, 4.0 parts of imidazole, and 1.0 part of modified urea.

[0039] The specific preparation steps are as follows: Add nitrile rubber, epoxy resin, modified epoxy resin, vulcanizing agent and softener into the kneader according to the proportion, stir at a medium speed for 80 minutes, and mix thoroughly, while controlling the temperature of the glue to <80°C; Add the filler into the kneader, stir at low speed for 50 minutes, and control the glue temperature < 80°C; add the curing agent, accelerator and silane coupling agent into the kneader, stir at low speed for 60 minutes, and control ...