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Rubber for sealing metal and preparation method thereof

A rubber and metal technology, applied in the field of rubber for sealing metals and its preparation, can solve problems such as loosening and falling off, inconvenient replacement and use, unfavorable sealing, etc., to achieve the effect of avoiding loosening and falling off, convenient taking and replacement, and prolonging the service life

Inactive Publication Date: 2019-02-22
KACO WUXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the existing rubber is used as a seal to combine with metal, it is necessary to use an adhesive for tight connection, or the rubber is stuck in the metal device for sealing without any adhesiveness. Although the former is tightly connected, once bonded It cannot be removed, and it is inconvenient to replace and use. The latter is easy to take, but it often loosens and falls off, which is not conducive to sealing

Method used

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  • Rubber for sealing metal and preparation method thereof
  • Rubber for sealing metal and preparation method thereof
  • Rubber for sealing metal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of rubber for sealing metal, described rubber is made up of following raw materials in parts by weight:

[0024]

[0025] A preparation method of rubber for sealing metal, comprising the following steps:

[0026] (1) Pre-mixing treatment: Mix hydrogenated nitrile rubber, fumed silica, zinc oxide and softener evenly, then add them to the internal mixer for 20 minutes of plastic training, and the plastic training temperature is 60°C to obtain hydrogenated nitrile butadiene masterbatch Rubber mixing: adding epoxy resin, liquid polysulfide rubber with an average molecular weight of 1000, and coupling agent into the internal mixer for plasticizing for 6 minutes at a temperature of 80°C to obtain modified rubber mixing;

[0027] (2) Mixing: mix the above-mentioned hydrogenated nitrile masterbatch, modified rubber mixing, curing agent and KH-560 organosilane coupling agent in the internal mixer for 20min, the temperature in the internal mixer is 60 ℃, extrude Go out...

Embodiment 2

[0030] A kind of rubber for sealing metal, described rubber is made up of following raw materials in parts by weight:

[0031]

[0032]

[0033] A preparation method of rubber for sealing metal, comprising the following steps:

[0034] (1) Premixing treatment: Mix hydrogenated nitrile rubber, fumed silica, zinc oxide and softener evenly, then add them to the internal mixer for 5 minutes of plasticizing, and the plasticizing temperature is 90°C to obtain hydrogenated nitrile butadiene master Rubber mixing: Add epoxy resin, liquid polysulfide rubber with an average molecular weight of 800, and a coupling agent to the internal mixer for 2 minutes of plasticizing, and the plasticizing temperature is 100°C to obtain modified rubber mixing;

[0035] (2) Mixing: mix the above-mentioned hydrogenated nitrile masterbatch, modified rubber mixing, curing agent and KH-570 organosilane coupling agent in the internal mixer for 10min, the temperature in the internal mixer is 70°C, and e...

Embodiment 3

[0038] A kind of rubber for sealing metal, described rubber is made up of following raw materials in parts by weight:

[0039]

[0040]

[0041] A preparation method of rubber for sealing metal, comprising the following steps:

[0042] (1) Pre-mixing treatment: Mix hydrogenated nitrile rubber, fumed silica, zinc oxide and softener evenly, then add them to the internal mixer for 10 minutes of plasticizing, and the plasticizing temperature is 78°C to obtain hydrogenated nitrile butadiene masterbatch Rubber mixing: adding epoxy resin, liquid polysulfide rubber with an average molecular weight of 900, and a coupling agent into the internal mixer for plasticizing for 4 minutes at a temperature of 90°C to obtain modified rubber mixing;

[0043] (2) Mixing: Mix the above-mentioned hydrogenated nitrile masterbatch, modified rubber, curing agent and KH-570 organosilane coupling agent in an internal mixer for 15min, the temperature in the internal mixer is 65°C, and extrude Go ou...

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Abstract

The invention discloses rubber for sealing metal and a preparation method thereof. The rubber is prepared from the following raw materials in parts by weight: 100 parts of hydrogenated butadiene-acrylonitrile rubber, 10-30 parts of epoxy resin, 5-10 parts of liquid polysulfide rubber, 15-30 parts of white carbon black, 4-8 parts of zinc oxide, 5-10 parts of a vulcanizing agent, 30-45 parts of a curing agent, 1-10 parts of softener and 10-15 parts of a coupling agent. The method comprises the following steps: (1) premixing; (2) mixing; and (3) vulcanizing.The rubber prepared by the method can be used for effectively adsorbing metal when being applied to a metal device, preventing the metal device from loosening or falling and ensuring the sealing property, is convenient to take and replace,and forms a magnet-like effect with metal.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a rubber for sealing metal and a preparation method thereof. Background technique [0002] The rubber material is a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformation under a small external force, and can return to its original shape after the external force is removed. Rubber is used as a sealing material in the sealing of metal devices, which can effectively reduce the noise of metal devices, absorb shock and vibration, etc. Rubber and metal are two different materials. Their chemical structure and mechanical properties are very different. The effective combination of the two can meet people's needs in various aspects such as automobiles, aerospace, and machinery. [0003] Hydrogenated nitrile rubber (HNBR) is a highly saturated elastomer obtained by special hydrogenation of nitrile rubber. Hydrogenated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L63/00C08L81/02C08K3/36C08K3/22C08K5/5435C08K5/5425C08J3/24
CPCC08J3/246C08J2315/00C08J2463/00C08J2481/02C08K3/36C08K5/5425C08K5/5435C08K2003/2296
Inventor 马小鹏高睿胡华南陈熙亚
Owner KACO WUXI
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