A high weather resistance magnetic ring

Abstract

The invention discloses a high weather-resistant magnetic ring, which comprises a modified rubber and plastic layer containing ferrite materials, and a metal ring skeleton, wherein the modified rubber and plastic layer containing ferrite materials is wrapped on the metal ring skeleton after high temperature vulcanization, after being activated, the modified rubber and plastic layer containing ferrite materials can continuously transmit interphase singles vertical to the N / S pole of the rubber and plastic layer, and the modified rubber and plastic layer containing ferrite materials comprises the following raw materials in percentage by weight: 5 to 8% of PVC (polyvinyl chloride) / NBR (nitrile-butadiene rubber) rubber and plastic materials, 82 to 90% of ferrite magnetic powder, 3 to 6% of PVC materials, 1 to 2% of dispersing agents, 0.5 to 1% of age resister, 0.2 to 0.5% of a promoter, and 0.2 to 0.5% of a vulcanizing agent. The high weather-resistant magnetic ring disclosed by the invention mainly solves the problems of the poor ozone resistance, the poor ageing resistance, the poor oil resistance and the poor chemical resistance of a NBR-based magnetic ring, and the tensile strength, the stress at definite elongation, the tear resistance, the weather resistance and the fire resistance are improved greatly.

Description

technical field [0001] The invention relates to a high weather resistance magnetic ring. Background technique [0002] The magnetic ring is mainly composed of a metal ring skeleton, a ring-shaped rubber-plastic layer containing ferrite material, the rubber-plastic layer is wrapped on the skeleton, most of them are exposed to the air, and most of the magnetic rings are installed on automobile bearings or hub units. After the rubber and plastic layer is activated, it will emit a continuous N / S pole-to-phase signal. Usually, the base material used for the rubber and plastic layer is NBR rubber. NBR rubber has poor weather resistance, and automobile bearings generate a lot of heat when they are loaded and rotate at high speed. , so that the magnetic ring needs to have good high temperature resistance performance. Since automobile bearings usually need to ensure that there are no problems in the 300,000-kilometer road test, the ozone resistance needs to be improved, which cannot ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor ozone resistance, aging resistance, oil resistance and chemical resistance of the magnetic ring with NBR as the base material, and greatly improve its tensile strength, modulus stress, tear resistance and weather resistance And flame retardancy, can obtain a larger area of ​​continuous signal, can reduce the outer diameter of the matching inner ring, reduce costs and save energy

Images