Preparation method and application of high-cohesiveness dealcoholized silicone rubber

A high-adhesive, silicone rubber technology, applied in the direction of adhesive types, chemical instruments and methods, non-polymer adhesive additives, etc., can solve the problems of poor bonding performance, reduced sealing performance, and easy Breathable and moisture-permeable and other issues, to achieve good market prospects, improve adhesion, and good shockproof performance

Active Publication Date: 2013-09-11
浙江耀阳新材料科技有限公司
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the common dealcoholized silicone rubber is used as the sealant of the current automobile headlights, which causes poor bonding performance with the frame of the automobile headlights, reduces the sealing performance, is easy to breathe and absorb moisture, and causes fogging in the lamp. A method for preparing high-adhesion dealcoholized silicone rubber is developed. The dealcoholized silicone rubber produced by this method has the advantages of fast vulcanization speed, excellent sealing performance, high temperature resistance, waterproof and shockproof performance, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix 60 parts of hydroxyl silicone oil with a viscosity of 20000mpa s, 20 parts of dimethyl silicone oil with a viscosity of 5000mpa s and 10 parts of silicone modified polyurethane (CH 3 ) 3 SiO[-NH-CO-] 8 OSi(CH 3 ) 3 After mixing evenly, add 20 parts of nano-calcium carbonate, stir evenly with a kneader and remove moisture in a vacuum for 1 hour to obtain a mixture;

[0034] (2) Grind the mixture obtained in (1) for 3-4 times with a three-roller machine and wake up for 4 hours, then add 4 parts of crosslinking agent methyltrimethoxysilane and 2 parts of curing accelerator tetramethyl titanate and curing catalyst stannous octoate 0.02 parts, then put it back into the kneader to continue stirring and vacuumize to remove moisture for 0.1h, then move to the press, press out and fill, and obtain a high-adhesive dealcoholized silicon rubber1.

[0035] The product is cured at room temperature for 24 hours, the hardness is 30 shore A, and the tensile strength is 2.8M...

Embodiment 2

[0037] (1) Mix 100 parts of hydroxy silicone oil with a viscosity of 2000mpa s, 50 parts of hydroxy silicone oil with a viscosity of 200000mpa s, 10 parts of dimethyl silicone oil with a viscosity of 500mpa s and 5 parts of silicone modified polyurethane (CH 3 CH 2 ) 3 SiO[-NH-CO-] 1000 OSi(CH 2 CH 3 ) 3 After mixing evenly, add 10 parts of nano-calcium carbonate, stir evenly with a kneader and remove moisture in a vacuum for 12 hours;

[0038] (2) Grind the mixture obtained in (1) for 3-4 times with a three-roller machine and wake it up for 48 hours, then add 8 parts of crosslinking agent methyltriethoxysilane, 8 parts of curing accelerator tetraethyl titanate part and 3.0 parts of stannous octoate as a curing catalyst, put it back into the kneader to continue stirring and vacuumize to remove moisture for 0.5 h, then move to the press, press out and fill, and obtain a high-adhesive dealcoholization type Silicone rubber2.

[0039] The product is cured at room temperatu...

Embodiment 3

[0041] (1) Mix 100 parts of hydroxy silicone oil with a viscosity of 20000mpa s, 50 parts of hydroxy silicone oil with a viscosity of 80000mpa s, 20 parts of dimethyl silicone oil with a viscosity of 500mpa s and 25 parts of silicone modified polyurethane (CH 3 CH 2 CH 2 ) 3 SiO[-NH-CO-] 100 OSi(CH2 CH 2 CH 3 ) 3 After mixing evenly, add 20 parts of precipitated white carbon black, stir evenly with a kneader and remove moisture in a vacuum for 7 hours;

[0042] (2) Grind the mixture obtained in (1) for 3-4 times with a three-roller machine and wake it up for 24 hours, then add 6 parts of crosslinking agent methyl tripropropoxysilane, curing accelerator tetrapropyl titanate 2 part and 1.0 part of curing catalyst dibutyltin dilaurate, put it back into the kneader to continue stirring and vacuumize to remove moisture for 2 hours, then move to the press, press out and fill, and obtain a highly cohesive release Alcohol type silicone rubber3.

[0043] The product is cured ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of silicone rubber and aims to overcome the problem of fogging in a car headlamp caused by degradation of sealability and easy air and water vapor permeability of a conventional sealant for the car headlamp because usage of ordinary dealcoholized silicone rubber as the sealant results in poor cohesiveness between the sealant and the frame of the car headlamp. The invention brings forward a preparation method for high-cohesiveness dealcoholized silicone rubber. The dealcoholized silicone rubber prepared by using the method has the advantages of a fast curing speed, excellent sealability, good high-temperature resistance, water resistance and shockproof performance and high cohesiveness with the frame of the car headlamp.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a preparation method of highly cohesive dealcoholized silicone rubber and its application in automobile headlights. Background technique [0002] Car headlights, also known as car headlights, are used to provide car owners with a good view in poor light or dark days. As the eyes of a car, it is not only related to the external image of a car owner, but also closely related to safe driving at night or in bad weather conditions. Because in the case of lack of light, such as bad weather or dark sky, the accident rate will increase by more than 80%. [0003] In the prior art, the sealant of automobile headlights adopts ordinary dealcoholized silicone rubber, which has poor bonding performance with the frame of automobile headlights, which leads to a decrease in sealing performance, and is easy to breathe and moisture, causing fogging inside the lamp, which will seriously...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/04C09J175/04C09J11/04C09J11/06C09K3/10
Inventor 华西林杨雄发来国桥吴连斌蒋剑雄
Owner 浙江耀阳新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap