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High-toughness automobile waterproof sealing strip

A technology of waterproof sealing and high toughness, which is applied in the field of high-toughness automotive waterproof sealing strips and its preparation, which can solve the problems of poor oil resistance and other problems, and achieve the effects of improving strength, improving oil and water resistance, and solving poor oil resistance

Active Publication Date: 2019-04-05
江苏润泰银科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-toughness automobile waterproof sealing strip and its preparation method. In the rubber preparation process, graphene oxide is used as a monomer, which can improve the strength and oil and water resistance of the rubber. At the same time, -CN group is introduced into the graphene oxide. , -CN group has good oil resistance, and the oil resistance of rubber is realized through the effect of -CN group. After soaking in gasoline for 80 hours, its tensile strength does not change much, and its performance is stable. It solves the problem of the existing silicone rubber oil resistance. The problem of poor ability

Method used

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  • High-toughness automobile waterproof sealing strip
  • High-toughness automobile waterproof sealing strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The specific preparation process of cyano-amidated unsaturated graphene oxide monomer is as follows:

[0030] Step 1. Weigh 1kg of graphene oxide and add it to 30L of water, raise the temperature to 70°C for ultrasonic dispersion for 30min, pour the obtained graphene oxide dispersion into the reaction flask, then add 110g of p-hydroxybenzonitrile to the reaction flask, keep 70 ℃ for 5 hours, and then the product was filtered and washed to obtain cyanographene oxide;

[0031] Step 2. Add 1 kg of cyano graphene oxide and N, N-dimethylformamide prepared in step 1 to the reaction vessel, ultrasonically disperse for 50 min, and then add 360 g of dichlorographene to the ultrasonically dispersed cyano graphene oxide Sulfoxide, warming up to 80°C, stirring for 6h, then concentrating the obtained product and distilling under reduced pressure to remove excess thionyl chloride and solvent N,N-dimethylformamide to obtain cyano-chlorinated oxidation Graphene: Since the end of the c...

Embodiment 2

[0034] The specific preparation process of amidated unsaturated graphene oxide monomer is as follows:

[0035] Step 1. Add 1kg of graphene oxide and N,N-dimethylformamide into the reaction vessel, ultrasonically disperse for 50min, then add 360g of thionyl chloride to the ultrasonically dispersed cyanographene oxide, and heat up to 80°C , stirred and reacted for 6h, then the product obtained was concentrated and then distilled under reduced pressure to remove excess thionyl chloride and solvent N,N-dimethylformamide to obtain graphene oxide chloride; due to the cyanographene oxide The end of the sheet contains a large number of carboxyl groups, which can undergo a substitution reaction with thionyl chloride under certain conditions to form acid chlorides;

[0036] Step 2. Add 1 kg of the chlorinated graphene oxide prepared in step 1 into ether, raise the temperature to 80°C for ultrasonic dispersion for 30 minutes, then add 170 g of diallylamine to it, stir and react at a cons...

Embodiment 3

[0038] Diallylamine in Example 1 was replaced with allylamine.

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Abstract

The invention provides a high-toughness automobile waterproof sealing strip which comprises, by weight, 26-28 parts of cyano-amidated unsaturated graphene oxide monomer, 43-47 parts of vinyl trimethoxysilane, 45-56 parts of azodiisobutyronitrile, 12-14 parts of sodium-based montmorillonite, 6-8 parts of nano silicon dioxide, 7-9 parts of borax, 2-3 parts of promoter, 2-3 parts of antiager, 5-6 parts of sulfur and 150-200 parts of acetone. Graphene oxide is used as monomer in the process of rubber preparation, so that strength and resistance to oil and water of rubber can be improved; -CN groupis intruded on graphene oxide and has good oil resistance, so that oil resistance of the rubber is realized through action of -CN; tensile strength does not change greatly after being soakced in gasoline in 80h, performance is stable, and the problem that existing silicone rubber is poor in oil resistance.

Description

technical field [0001] The invention belongs to the field of preparation of automobile sealing strips, and relates to a high-toughness automobile waterproof sealing strip and a preparation method thereof. Background technique [0002] Silicone rubber has outstanding high and low temperature resistance, ozone resistance and weather resistance, excellent hydrophobicity and proper air permeability, and has unparalleled insulation properties. It can meet the hygienic level required by food hygiene and can meet various colors. Requirements, but the mechanical strength of silicone rubber is poor, not oil-resistant, the temperature range -100-300 ℃, suitable for high temperature, cold, strong ultraviolet radiation areas and high-rise buildings. [0003] Many existing automotive waterproof seals use modified silicone rubber. In order to improve its mechanical strength, carbon black or carbon nanotubes are usually added directly to the silicone rubber, although the mechanical propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F230/08C08K3/22C08K3/34C08K3/38
CPCC08F292/00C08K3/22C08K3/346C08K3/38C08K2003/2241C08K2003/387C08K2201/011C08F230/08
Inventor 不公告发明人
Owner 江苏润泰银科技股份有限公司
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