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Preparation method of anti-fog transparent silicone rubber film for rearview mirror of automobile

A technology for automotive rearview mirrors and silicone rubber, which is applied in the direction of film/sheet adhesives and adhesives, which can solve problems such as difficulty, achieve good resilience, long-lasting anti-fog effects, and reduce interfacial tension

Active Publication Date: 2014-12-17
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it is not easy to bond polyether-based silane to the glass surface. It requires high-temperature baking and other conditions. It is impossible to remove the rearview mirror and treat it at high temperature before installing it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The composition and mass parts of silicone rubber are: vinyl silicone oil: 70 parts; hydroxyl-containing vinyl MQ silicone resin: 20 parts; hydrogen-containing silicone oil: 10 parts; addition reaction catalyst 1,3-divinyl tetramethyl di Silicone platinum complex: 0.02 parts.

[0024] Film preparation method: Mix the above components evenly, pour into a 10cm long, 4cm wide, 2mm molding mold, and bake at 150 degrees for 1 hour to obtain cured transparent silicone rubber. One side of the cured silicone rubber is coated with Q2-7735 adhesive, then baked at 180°C for 30 seconds to cure, and covered with a transparent PVC film. Spray polyether-based trimethoxysilane waterproofing agent on the other side of the silicone rubber, and then bake it at 150 degrees for 30 minutes, so that the polyether-based trimethoxysilane and the surface hydroxyl group of the silicone rubber undergo a condensation reaction to obtain the waterproofing agent of the present invention. Anti-fog tra...

Embodiment 2

[0026] The composition and mass parts of silicone rubber are: vinyl silicone oil: 75 parts; hydroxyl-containing vinyl MQ silicone resin: 14 parts; hydrogen-containing silicone oil: 11 parts; addition reaction catalyst 1,3-divinyl tetramethyl di Silicone platinum complex: 0.02 parts.

[0027] Film preparation method: Mix the above components evenly, pour into a 10cm long, 4cm wide, 2mm molding mold, and bake at 150 degrees for 1 hour to obtain cured transparent silicone rubber. One side of the cured silicone rubber is coated with Q2-7735 adhesive, then baked at 180°C for 30 seconds to cure, and covered with a transparent PVC film. Spray polyether-based trimethoxysilane waterproofing agent on the other side of the silicone rubber, and then bake it at 130 degrees for 40 minutes, so that the polyether-based trimethoxysilane and the surface hydroxyl group of the silicone rubber undergo condensation reaction to obtain the waterproofing agent of the present invention. Anti-fog trans...

Embodiment 3

[0029] The composition and mass parts of silicone rubber are: vinyl silicone oil: 60 parts; hydroxyl-containing vinyl MQ silicone resin: 32 parts; hydrogen-containing silicone oil: 8 parts; addition reaction catalyst 1,3-divinyl tetramethyl di Silicone platinum complex: 0.02 parts.

[0030] Film preparation method: Mix the above components evenly, pour into a 10cm long, 4cm wide, 2mm molding mold, and bake at 150 degrees for 1 hour to obtain cured transparent silicone rubber. One side of the cured silicone rubber is coated with Q2-7735 adhesive, then baked at 180°C for 30 seconds to cure, and covered with a transparent PVC film. Spray polyether-based trimethoxysilane waterproofing agent on the other side of the silicone rubber, and then bake it at 160 degrees for 35 minutes, so that the polyether-based trimethoxysilane and the surface hydroxyl group of the silicone rubber undergo a condensation reaction to obtain the waterproofing agent of the present invention. Anti-fog tran...

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Abstract

The invention discloses a preparation method of an anti-fog transparent silicone rubber film for a rearview mirror of an automobile. The preparation method is characterized by comprising the following steps: coating one face of silicon rubber with an organosilicone pressure sensitive adhesive Q2-7735, then baking the organosilicone pressure sensitive adhesive Q2-7735 at a temperature of 180 DEG C for 30s to ensure that the organosilicone pressure sensitive adhesive Q2-7735 is cured, covering with a transparent PVC film; and spraying a polyether silane waterproof agent on the other face of the silicon rubber, and then baking the polyether silane waterproof agent at a temperature of 150 DEG C for 30-60min to ensure that polyether silane and hydroxyl on the surface of the silicon rubber generate a condensation reaction to obtain the anti-fog transparent silicone rubber film for the rearview mirror of the automobile. The silicon rubber provided by the invention is high in transparency and is pasted on a mirror surface without influencing light rays or causing distortion due to the fact that the light transmittance is greater than 98 percent. The silicon rubber is good in rebound resilience and can resist against tearing, hot and cold impaction, heat, radiation and ageing.

Description

technical field [0001] The invention relates to a preparation method of a silicone rubber film, in particular to a preparation method of an anti-fog transparent silicon rubber film for an automobile rearview mirror. Background technique [0002] When the car is running, in case of rain and fog, the surface of the rearview mirror will form water droplets or water mist that interfere with people's sight. In serious cases, it cannot be used at all, causing serious safety hazards. [0003] In order to ensure a clear view of the car when driving in rainy days, the glass or mirror is coated with a waterproof agent to prevent water droplets from adhering to the glass surface. CN1234820A discloses alkoxy-containing polysiloxane, fluororesin, and paraffin as active ingredients to prepare a water repellent for automobile glass. CN1561315A discloses the preparation of water repellent for glass with fluoroalkylsilane as active ingredient. Under the action of wind pressure, the raindro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C08L83/07C08L83/06C08L83/05
Inventor 朱淮军戴子林涂伟萍
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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