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A kind of magnetic epdm sponge rubber and preparation method thereof

A sponge rubber and magnetic technology, which is applied in the field of auto parts processing, can solve the problems of poor processing performance and low magnetic properties of magnetic sponge rubber, and achieve the effects of improving processing performance, large remanence and good processing performance.

Active Publication Date: 2017-01-18
FANYA AUTOMOBILE TECH CENT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problem that the magnetic sponge rubber in the prior art cannot meet the needs of production and life due to its small magnetism and poor processing performance, and further provides a high magnetic EPDM sponge rubber with high residual magnetic strength and good processing performance and its preparation method

Method used

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  • A kind of magnetic epdm sponge rubber and preparation method thereof
  • A kind of magnetic epdm sponge rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Magnetic EPDM sponge rubber described in the present embodiment, its raw material consists of:

[0053] Ethylene content is 55wt% EPDM raw rubber (purchased from Exxon Mobil, product model is 3666, 120 parts by weight;

[0054] Carbon black N550 and carbon black N774, 20 parts by weight;

[0055]Paraffin oil, 110 parts by weight;

[0056] Barium ferrite magnetic powder, 400 parts by weight;

[0057] Silicon 69,4 parts by weight;

[0058] Ammonium carbonate, 0.5 parts by weight;

[0059] Tetramethylthiuram disulfide, 8 parts by weight.

[0060] The preparation method of magnetic EPDM sponge rubber described in the present embodiment comprises the steps:

[0061] (1) Masticating raw rubber: put 120 parts by weight of the EPDM raw rubber into an internal mixer for masticating, the masticating time is 80 seconds, and the temperature during the masticating process is controlled below 80°C;

[0062] (2) mixing, carry out following steps successively:

[0063] a. drop i...

Embodiment 2

[0071] Magnetic EPDM sponge rubber described in the present embodiment, its raw material consists of:

[0072] Ethylene content is 80wt% EPDM raw rubber (purchased from Exxon Mobil, product model is 8600), 80 parts by weight;

[0073] Carbon black N550 and carbon black N774, 66 parts by weight;

[0074] Paraffin oil, 60 parts by weight;

[0075] Strontium ferrite magnetic powder, 500 parts by weight, the particle size of the strontium ferrite magnetic powder is 800 mesh;

[0076] Stearic acid soap, 1 part by weight;

[0077] Urea, 3 parts by weight;

[0078] Sodium thiophosphate, 2 parts by weight.

[0079] The preparation method of magnetic EPDM sponge rubber described in the present embodiment comprises the steps:

[0080] (1) Masticating raw rubber: put the EPDM raw rubber into an internal mixer for plasticating, the plasticating time is 100 seconds, and the temperature during the plasticating process is controlled below 80°C;

[0081] (2) mixing, carry out following ...

Embodiment 3

[0090] Magnetic EPDM sponge rubber described in the present embodiment, its raw material consists of:

[0091] Ethylene content is 64wt% EPDM raw rubber (available from ExxonMobil, product model V3666), 100 parts by weight;

[0092] The mass ratio is the mixture of carbon black N550 and N774 of 1: 1, 50 parts by weight;

[0093] Paraffin oil, 90 parts by weight;

[0094] Cobalt-nickel ferrite magnetic powder, 430 parts by weight;

[0095] Oleic acid amide, 3 parts by weight;

[0096] 2-mercaptobenzothiazole, 5 parts by weight;

[0097] Azobisisobutyronitrile, 1 part by weight.

[0098] The preparation method of magnetic EPDM sponge rubber described in the present embodiment comprises the steps:

[0099] (1) Masticating raw rubber: put the EPDM raw rubber into an internal mixer for masticating, the masticating time is 90 seconds, and the temperature during the masticating process is controlled below 80°C;

[0100] (2) mixing, carry out following steps successively:

[01...

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Abstract

The invention discloses magnetic EPDM foamed rubber, and belongs to the technical field of auto parts processing. The magnetic EPDM foamed rubber comprises the following raw materials in pars by weight: 80-120 parts of EPDM raw rubber, 20-66 parts of carbon black, 60-110 parts of paroline, 400-500 parts of magnetic powder, 1-4 parts of a surfactant, 0.5-3 parts of a foaming agent and 2-8 parts of an accelerant, wherein the ethylene content in the EPDM raw rubber is 55-80wt%. The magnetic EPDM foamed rubber disclosed by the invention has the advantages of high loading capacity, large magnetic remanence intensity and good processability, and can be used for fabricating automobile sealing strips and the like.

Description

technical field [0001] The invention relates to a magnetic EPDM sponge rubber used for automobile sealing strips and a preparation method thereof, belonging to the technical field of automobile parts processing. [0002] technical background [0003] Magnetic sponge rubber is a general term for porous elastomer materials with magnetism, which is prepared from raw rubber, magnetic powder (magnetic filler), foaming agent and other additives. Magnetic sponge rubber exhibits different magnetic levels under the action of an external magnetic field, especially high-magnetic sponge rubber has practical value, and the magnetism of magnetic sponge rubber comes from a large amount of magnetic powder (2 to 8 times the mass of raw rubber) filled in it, so Magnetic powder is indispensable for making magnetic sponge rubber. Magnetic powder can be divided into metal magnetic powder and oxide magnetic powder according to its composition. Metal magnetic powder is rarely used because of its h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L91/00C08K13/02C08K3/04C08K3/22C08K5/20C08K5/21C08K5/098C08K5/5398C08J9/08C08J9/10C08J9/06
CPCC08J9/08C08J9/103C08J9/104C08J2203/04C08J2323/08C08J2491/00C08L23/16C08L91/00C08K13/02C08K3/04C08K2003/2265C08K5/40C08K5/098C08K5/5398C08K5/20C08K5/47
Inventor 潘坡闫伟涛郭恒如邓峰
Owner FANYA AUTOMOBILE TECH CENT
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