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High-toughness automobile waterproof sealing strip and preparation method thereof

A technology of waterproof sealing and high toughness, which is applied in the field of high toughness automobile waterproof sealing strip and its preparation, which can solve the problems of poor oil resistance and other problems, and achieve the effect of improving strength, stable performance, and improving oil and water resistance

Active Publication Date: 2021-08-20
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 and preparation method thereof
  • High-toughness automobile waterproof sealing strip and preparation method thereof
  • High-toughness automobile waterproof sealing strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Cyano - preparation of amides specific unsaturated monomer in the graphene oxide:

[0030] Step 1 Weigh the graphene oxide 1kg 30L water was added, ultrasonic dispersion was warmed to 70 deg.] C 30min, graphene oxide dispersion liquid was poured into the reaction flask, followed by addition of 110g paraben-carbonitrile To the reaction flask was maintained at 70 ℃ for 5h, and then the product was filtered off with suction and washed, to obtain graphene oxide cyano;

[0031] In step 2, the cyano 1kg graphene oxide prepared in Step 1 and N, N- dimethylformamide was added to the reaction vessel, an ultrasonic dispersion 50min, 360g was then added to the cyano-dichloro ultrasonic graphene oxide dispersion sulfoxide, heated to 80 ℃, the reaction was stirred for 6h, then concentrated in vacuo. the product was obtained after distillation under reduced pressure to remove excess thionyl chloride and the solvent N, N- dimethylformamide, to give cyano - oxychlorination graphene; a cyan...

Embodiment 2

[0034] Specific preparation of unsaturated amide monomers graphene oxide as follows:

[0035] Step 1, the graphene oxide 1kg and N, N- dimethylformamide was added to the reaction vessel, an ultrasonic dispersion 50min, followed by addition of thionyl chloride to 360g cyano ultrasonic graphene oxide dispersion, the temperature was raised to 80 deg.] C the reaction was stirred 6h, then concentrated in vacuo. the product was obtained after distillation under reduced pressure to remove excess thionyl chloride and the solvent N, N- dimethylformamide, to obtain graphene oxide chloride; cyano since graphene oxide sheet containing a large amount of carboxyl end, under certain conditions can replace the reaction to produce the acid chloride with thionyl chloride occurred;

[0036] Step 2, the oxidation of chloride prepared in Step 1 1kg graphene diethyl ether was added, ultrasonic dispersion was heated to 80 deg.] C 30min, then added diallylamine 170g, the reaction temperature was stirred ...

Embodiment 3

[0038] The diallylamine in Example 1, but with allylamine.

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Abstract

The invention provides a high-toughness automobile waterproof sealing strip, comprising the following components in parts by weight: 26-28 parts of cyano-amidated unsaturated graphene oxide monomer, 43-47 parts of vinyltrimethoxysilane, 45-56 parts of nitrogen diisobutyronitrile, 12-14 parts of sodium montmorillonite, 6-8 parts of nano-titanium dioxide, 7-9 parts of borax, 2-3 parts of accelerator, 2-3 parts of anti-aging agent, 5-5 parts of sulfur 6 parts, 150-200 parts of acetone disclose that the present invention uses graphene oxide as a monomer in the rubber preparation process, which can improve the strength and oil and water resistance of rubber, and simultaneously introduce -CN groups on the graphene oxide, and the -CN groups have relatively Good oil resistance, the oil resistance of rubber is realized through the action of ‑CN group, the tensile strength does not change much after soaking in gasoline for 80 hours, and the performance is stable, which solves the problem of poor oil resistance of existing silicone rubber.

Description

Technical field [0001] The invention belongs to the field of automotive sealing strips, and it is related to a high toughness vehicle waterproof seal and its preparation method thereof. Background technique [0002] Silicone rubber has highlighted high, low temperature characteristics, odor oxygen and weather resistance, with excellent hydrophobicity and appropriate gas permeability, with unparalleled insulation performance, can meet the health level of food hygiene, can meet various colors The requirements, but the mechanical strength of silicone rubber is poor, non-oil-resistant, used in temperature range - 100-300 ° C, can be applied to high temperatures, cold, ultraviolet irradiation, and high-rise buildings. [0003] The existing car waterproof seals use modified silicone rubber, in order to improve their mechanical strength, it is generally added to silicone rubber to silicone rubber, although supported by carbon black and carbon nanotubes can improve the mechanical mechani...

Claims

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Application Information

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Patent Type & Authority Patents(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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