A kind of magnetic rubber seal composite material with high pressure change resistance and preparation method thereof

A composite material and magnetic rubber technology, which is applied in the field of functional magnetic sealing composite materials, can solve the problems of difficult to meet high pressure change, magnetic seals can not meet the use, and does not involve pressure change performance.

Active Publication Date: 2021-02-05
QINGDAO UNIV OF SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN201610569817 discloses an iron-nickel magnetically reinforced EPDM rubber sealing strip. The magnetic seals of the above two patents cannot be used in dynamic sealing conditions and oily media
The above patents are difficult to meet the requirements of magnetic rubber seals for dynamic sealing, medium resistance and high pressure change resistance under harsh working conditions, and none of the above patents involves research on pressure change resistance

Method used

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  • A kind of magnetic rubber seal composite material with high pressure change resistance and preparation method thereof
  • A kind of magnetic rubber seal composite material with high pressure change resistance and preparation method thereof
  • A kind of magnetic rubber seal composite material with high pressure change resistance and preparation method thereof

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Experimental program
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Embodiment 1

[0027] A high pressure change resistant magnetic rubber seal composite material, the main components of the composite material are as follows:

[0028]

[0029]

[0030] Processing method I is:

[0031] Prepare each raw material according to the formula, set the starting temperature of banburying to 50-60°C, and the speed to 40-60r / min. First, add stearic acid, anti-aging agent, reinforcing agent, processing aid and 1 / 3 of the formula amount of magnetic powder into the internal mixer. After mixing evenly, add nitrile rubber and mix for 2-4 minutes, then add neoprene rubber for internal mixing 2 -4min, then add tackifier, plasticizer and 2 / 3 of the formula amount of magnetic powder and coupling agent, knead for 5-8min to remove glue, the temperature of glue removal should be less than 140℃; After rolling, add highly active metal oxides, vulcanizing agents and accelerators to prepare the rubber mixture; after the rubber mixture is placed for 12-24 hours, it will be vulcan...

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Abstract

The invention relates to the field of functional magnetic sealing composite materials, and in particular provides a high pressure-resistant magnetic rubber sealing composite material and a preparation method thereof, which is mainly characterized by nitrile rubber, neoprene and magnetic powder and reinforcement, Composition of vulcanization and protection system, mixed by internal mixer and vulcanized by vulcanizer, the magnetic rubber sealing composite material has excellent dynamic sealing and static sealing, good solvent resistance, high resistance to pressure change, relatively Good thermal stability, magnetic stability and other characteristics.

Description

technical field [0001] The invention relates to the field of functional magnetic sealing composite materials, and in particular provides a magnetic rubber sealing composite material with high pressure resistance and a preparation method thereof. Background technique [0002] Magnetic seals are developing in the direction of high pressure resistance, high magnetism, wide temperature range, and diversified types of resistant media, especially magnetic seals for motors and automobiles. Magnetic seals usually operate under special working conditions of high pressure, high temperature, various media, and reciprocating motion, so higher requirements are placed on the materials of magnetic seals. For example, the working temperature range is expanded from -10°C to 100°C to -60°C to 160°C, and the compression deformation rate under high vibration is required to be low to ensure long-term sealing effect. Vulcanized rubber is a soft material with high elastic memory. To achieve high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L11/00C08L91/00C08L57/02C08L61/08C08K13/02C08K3/22C08K5/09C08K3/08
CPCC08K2003/0856C08K2003/222C08K2201/01C08L9/02C08L2201/08C08L2205/025C08L2205/035C08L11/00C08L91/00C08L57/02C08K13/02C08K3/22C08K5/09C08K3/08C08L61/06
Inventor 刘莉郭新张保岗孙立水游海军
Owner QINGDAO UNIV OF SCI & TECH
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