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Rubber for low-resistance flame-retardant fuel cell transmission pipeline

A fuel cell and transmission pipeline technology, applied in the field of rubber materials, can solve problems such as inability to discharge static electricity, high resistance, poor flame retardancy, etc., to improve dispersion and compatibility, reduce resistance, and enhance flame retardancy. Effect

Pending Publication Date: 2022-07-08
NINGBO FENGMAO FAR EAST RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the problems of poor flame retardancy, high resistance and inability to release static electricity of the existing silicone rubber, and provides a low resistance flame retardant rubber for fuel cell transmission pipelines.

Method used

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  • Rubber for low-resistance flame-retardant fuel cell transmission pipeline
  • Rubber for low-resistance flame-retardant fuel cell transmission pipeline
  • Rubber for low-resistance flame-retardant fuel cell transmission pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0025] The preparation method of the high-pressure and high-temperature resistant high-resistance cooling pipeline rubber of the present invention is as follows: 1) kneading: after weighing each material according to the mass ratio, add the materials except the vulcanizing agent into the kneader and knead evenly; 2) plasticizing : Add the mixed rubber in the internal mixer, add the vulcanizing agent to make the mixed rubber for use; 3) Vulcanization: vulcanize the mixed rubber on the vulcanizing machine, the vulcanization temperature is 170 ℃, the pressure is 10 MPa, and the time is After 10 minutes, the glue is discharged and cooled, and the rubber for the transmission pipeline of the low-resistance flame-retardant fuel cell is obtained after the glue is discharged.

[0026] The raw material ratios in Examples 1-4 are shown in Table 1. Wherein, the polypyrrole nanotube composite flame retardant is obtained according to the preparation method of Example 5, the conductive agent...

Embodiment 5

[0029] Example 5: Preparation of polypyrrole nanotube composite flame retardant

[0030] (1) Synthesis of polypyrrole nanotubes: Dissolve pyrrole and dopant in deionized water, then add an oxidant, the dopant is methyl orange, the mass ratio of pyrrole to dopant is 3.5:1, and the oxidant is chloride The material ratio of iron, pyrrole and oxidant is 5:1, mixed and reacted for 30h, filtered, washed and dried at 25°C for 48h to obtain polypyrrole nanotubes;

[0031] (2) Synthesis of polypyrrole nanotube composite flame retardant: disperse the polypyrrole nanotube obtained in step (1) in a 1 mol / L magnesium chloride solution, the mass ratio of magnesium chloride solution to polypyrrole is 250:1, and after stirring evenly Ammonia water is added until the pH is 9-10, the reaction is allowed to stand for 6 hours, and the polypyrrole nanotube composite flame retardant is obtained after filtering, washing and drying.

Embodiment 6

[0032] Example 6: Preparation of polypyrrole nanotube composite flame retardant

[0033](1) Synthesis of polypyrrole nanotubes: Dissolve pyrrole and dopant in deionized water, then add oxidant, the dopant is methyl orange, the mass ratio of pyrrole to dopant is 3:1, and the oxidant is ferric nitrate , the ratio of the amount of pyrrole to the oxidant is 6:1, the mixture is reacted for 24 hours, filtered, washed and dried at 20 °C for 48 hours to obtain polypyrrole nanotubes;

[0034] (2) Synthesis of polypyrrole nanotube composite flame retardant: The polypyrrole nanotubes obtained in step (1) are dispersed in 0.1 mol / L magnesium sulfate solution, and the mass ratio of magnesium sulfate solution to polypyrrole is 200:1, After stirring evenly, ammonia water is added until the pH is 9-10, the reaction is allowed to stand for 8 hours, and the polypyrrole nanotube composite flame retardant is obtained after filtering, washing and drying.

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Abstract

The invention relates to the field of rubber materials, and discloses a low-resistance flame-retardant rubber for a fuel cell transmission pipeline, which comprises the following components in parts by weight: 90-110 parts of vinyl silicone rubber, 40-60 parts of fumed silica, 20-40 parts of a composite flame retardant, 2-4 parts of a conductive agent, 1-3 parts of a coloring agent and 1-2 parts of a vulcanizing agent, the composite flame retardant is a polypyrrole nanotube composite flame retardant. In the preparation process of the polypyrrole nanotube composite flame retardant, magnesium hydroxide is combined to the surface of a polypyrrole nanotube, the flame retardant effect of the flame retardant is enhanced through the composite effect of the magnesium hydroxide and the polypyrrole nanotube, the dispersity and compatibility of the flame retardant are improved, the material is endowed with good flame retardance, meanwhile, the resistance of rubber is reduced under the condition that the mechanical strength requirement is met, and the service life of the material is prolonged. The rubber has good electrostatic discharge capability; the prepared rubber material has excellent flame retardant property and electrostatic discharge capability, and is suitable for being applied to fuel cell transmission pipelines.

Description

technical field [0001] The invention relates to the field of rubber materials, in particular to a low-resistance flame-retardant fuel cell transmission pipeline rubber. Background technique [0002] With the development of economy and technology, especially the energy crisis and pollution caused by fossil fuels, clean energy has gradually attracted people's attention. Hydrogen fuel cell (PEMFC) is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. product. [0003] In hydrogen fuel cells, sealing and transfer lines have a major impact on their stability, durability, safety, and lifetime cost. Especially for transmission pipelines, it is necessary to prevent and control hydrogen leakage monitoring, electrostatic protection, explosion-proof, flame retardant and other aspects to prevent unexpected situations and cause potential safety hazards. This puts forward high requirements for the material properties of t...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L79/04C08K7/26C08K3/22C08K3/04C08K7/06
CPCC08L83/04C08L2203/18C08L2203/20C08L2201/04C08L2201/02C08K2003/2224C08K2201/011C08K2201/001C08L79/04C08K7/26C08K3/22C08K3/04C08K7/06C08K3/041Y02E60/50
Inventor 蒋春雷安忠伟彭成强王军成曹有华
Owner NINGBO FENGMAO FAR EAST RUBBER
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